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Contents of issue № 9 (september) 2016 |
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- JUBILEE OF ORGANIZATION
- Main University of Civil Engineering of Country
- Building structures, buildings and facilities
- Numerical Analysis of Stress-Strain State of Multi-Faceted Metal Posts
- UDC 624.014
Andrey P. PUSTOVGAR1, e-mail: PustovgarAP@mgsu.ru
Igor M. GARANZHA2, e-mail: garigo@mail.ru
Lybov A. SHILOVA1, e-mail: ShilovaLA@mgsu.ru
Aleksey O. ADAMTSEVICH1, e-mail: AdamtsevichAO@mgsu.ru
1 National Research Moscow State University of Civil Engineering, Yaroslavskoye shosse, 26, Moscow 129337, Russian Federation
2 Donbas National Academy of Civil Engineering and Architecture, ul. Derzhavina, 2, Makiyivka 86123, Donetsk Region, Ukraine
Abstract. In the article the authors consider the problems of numerical analysis of the stress-strain state of elements (post and base) of multi-faceted structures. The principle of selecting the type of finite element, when creating a calculation model of structures on the basis of metal multi-faceted posts with the use of the software complex "SCAD", is presented. As a result, a quadrangular shell (the 44th type of the final element) is accepted as a rational variant. The sufficient level of discretization of the calculation level is numerically determined and its dependence on main structural parameters of the post is established. It is revealed that existing analytical methods of the calculation of posts don't take into account the discretization of the calculation model thereby reducing the accuracy of results obtained. When the height of posts is over 10 meter, it is identified that their calculation is to be made according to the deformed scheme (with due regard for geometrically non-linear character of their operation), this makes it possible to receive more accurate values of parameters of the stress-strain state. On the basis of the results of numerical studies using the software complex "SCAD", the most economic variant of the flanged base of multi-faceted metal structures concerning material has been selected.
Key words: metal multi-faceted posts, stress-strain state, normal and shear stresses, finite-element type, calculation model, model discretization level, geometric nonlinearity, flanged base. - REFERENCES
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- UDC 624.012.45:378.669(47-25).001.891
Ashot G. TAMRAZYAN, e-mail: tamrazian@mail.ru
National Research Moscow State University of Civil Engineering, Yaroslavskoe shosse, 26, Moscow 129337, Russian Federation
Abstract. The history of the development of methods for calculating reinforced concrete structures in the MGSU, as well as milestones and periods of the formation of the Department of reinforced concrete and masonry structures are represented. It is one of the leading departments of construction higher educational establishments of Russia which has sufficient experience both in research and educational processes. At all stages of mass construction in our country, the Department contributes to theoretical and experimental research, solution of practical problems of designing. The Department participates in organization and holding of international scientific conferences on problems of concrete and reinforced concrete. Results of the scientific activities of the Department, starting with the method of calculation for the breaking force and ending with contemporary issues of safety of buildings and structures, are presented. The role of developments of the Department in the theory of calculation of reinforced concrete structures and their use in the regulations is shown. Various aspects of activities of the leading professors of the Department concerning the development of the theory of calculation of reinforced concrete are considered. Many years of experience in research and teaching of the reinforced concrete structures course has contributed to the creation of a large number of monographs, tutorials, and training manuals widely known in the country by members of the Department.
Key words: reinforced concrete structures, reinforced concrete theory, calculation methods, scientific research, design standards. - REFERENCES
1. Tamrazyan A. G. On the 85th anniversary of the scientific and educational activities of the Department of reinforced concrete and masonry structures MGSU. Sovremennye problemy rascheta zhelezobetonnykh konstruktsiy, zdaniy i sooruzheniy na avariynye vozdeystviya. Sbornik dokladov Mezhdunarodnoy nauchnoy konferentsii, posvyashchennoy 85-letiyu kafedry zhelezobetonnykh i kamennykh konstruktsiy i 100-letiyu so dnya rozhdeniya N. N. Popova (19-20 Apr. 2016, Moscow). Moscow, NIU MGSU Publ., 2016. Pp. 5-9. (In Russian).
2. Golovin N. G., Tamrazyan A. G. Scientific activities of the Department of reinforced concrete and masonry structures. Zhelezobetonnye konstruktsii, issledovaniya, proektirovanie, metodika prepodavaniya. Sbornik dokladov Mezhdunarodnoy nauchno-metodicheskoy konferentsii, posvyashchennoy 100-letiyu so dnya rozhdeniya V. N. Baykova (4-5 Apr. 2012, Moscow). Moscow, MGSU Publ., 2012. Pp. 6-12. (In Russian).
3. Lolejt A. F. Kurs zhelezobetona dlya stroitel'nyh tekhnikumov. Osnovy teorii i proektirovaniya [A course of reinforced concrete for the construction of technical schools. Basic theory and design]. Moscow; Leningrad, Gosudarstvennoe izdatelstvo Publ., 1925. 27 p.
4. Pasternak P. L. Osnovy novogo metoda rascheta fundamentov na uprugom osnovanii pri pomoshchi dvuh koehfficientov posteli [The foundations of a new calculation method of foundations on elastic foundation by means of two ratios of bed]. Moscow, Gosstrojizdat Publ., 1954. 56 p. (In Russian).
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6. Murashev V. I. Raschet zhelezobetonnyh ehlementov po stadii razrusheniya [Calculation of reinforced concrete elements at the stage of destruction]. Moscow; Leningrad, Gosstroyizdat Publ., 1938. 184 p. (In Russian).
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8. Senin N. I. Scientific-pedagogical activity professor P. F. Drozdov. Sovremennye problemy rascheta i proektirovaniya zhelezobetonnykh konstruktsiy mnogoetazhnykh zdaniy. Sbornik dokladov Mezhdunarodnoy nauchnoy konferentsii, posvyashchennoy 100-letiyu so dnya rozhdeniya P. F. Drozdova (15 Okt. 2013, Moscow). Moscow, MGSU Publ., 2013. Pp. 3-8. (In Russian).
9. Drozdov P. F. Konstruirovanie i raschet nesushchih sistem mnogoehtazhnyh zdanij i ih ehlementov [Design and calculation of bearing systems of multi-storey buildings and their elements]. Moscow, Strojizdat Publ., 1977. 223 p. (In Russian).
10. Tamrazyan A. G. The 100th anniversary from the day of birth. D. S. Professor N. N. Popov. Sbornik dokladov Mezhdunarodnoy nauchnoy konferentsii, posvyashchennoy 85-letiyu kafedry zhelezobetonnykh i kamennykh konstruktsiy i 100-letiyu so dnya rozhdeniya N. N. Popova (19-20 Apr. 2016, Moscow). Moscow, NIU MGSU, 2016. Pp. 3-4. (In Russian).
11. Popov N. N., Rastorguev B. S. Dinamicheskij raschet zhelezobetonnyh konstrukcij [Dynamic analysis of reinforced concrete structures]. Moscow, Strojizdat Publ., 1974. 207 p.
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13. Kolchunov V. I., Tamrazyan A. G. Main directions of the development of structural safety theory and synthesis of reinforced concrete structural for buildings and structures. "Beton i zhelezobeton - vzglyad v budushchee". Nauch. tr. III Vserossiyskoy (II Mezhdunarodnoy) konferentsii po betonu i zhelezobetonu. ["Concrete and reinforced concrete - glance at future". In 7 vol.]. Moscow, MGSU Publ., 2014. Vol. 7. Pp. 176-206. (In Russian).
14. Tamrazyan A. G. Concrete and reinforced concrete: problems and prospects. Promyshlennoe i grazhdanskoe stroitel'stvo, 2014, no. 7, pp. 51-54. (In Russian). - Comparative Analysis of Seismic Protection Systems in the Form of Metal-Rubber and Friction Pendulum Bearings
- UDC 699.841
Oleg V. MKRTYCHEV, e-mail: mkrtychev@yandex.ru
Lilit M. ARUTYUNYAN, e-mail: lady-lilit@mail.ru
National Research Moscow State University of Civil Engineering, Yaroslavskoe shosse, 26, Moscow 129337, Russian Federation
Abstract. In this article a reaction of the systems of active seismic protection in the form of metal-rubber and friction pendulum bearings on the earthquake is researched. It should be noted that in Russia the most widespread seismic isolation systems are metal-rubber bearings, but these bearings have a number of disadvantages as limited operation time, low fire resistance, etc. Friction pendulum bearings as systems of active seismic protection are deprived of these disadvantages and can be effectively used for the protection of buildings and structures in seismic regions, but comprehensive studies of operation of these bearings are presently absent. The comparative analysis of work of metal-rubber and friction pendulum bearings is made. Numerical studies of the operation of linear and nonlinear oscillators with different lumped masses under the action of seismic load given in the form of accelerogram are outlined. Values of relative displacements and accelerations of the oscillators are determined. Quantitative indicators of the effectiveness of application of these types of systems of active seismic protection are presented.
Key words: seismic protection systems, seismic isolation methods, metal-rubber bearing, friction pendulum bearing, lumped mass. - REFERENCES
1. Mkrtychev O. V., Arutyunyan L. M. Analysis of actual methods of seismic protection of buildings and structures. Sb. tr. "Stroitel'stvo - formirovanie sredy zhiznedeyatel'nosti" [Construction - the formation of living environment]. Moscow, MGSU Publ., 2014. Pp. 492-495. (In Russian).
2. Mkrtychev O. V., Dzhinchvelashvili G. A., Busalova M. S. Simulation of structure interaction with the base in case of earthquaqe. Vestnik MGSU, 2013, no. 12, pp. 34-40. (In Russian).
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10. Kurzanov A. M., Semenov S. Yu., Shabalin G. A. On the question of the application of lead-rubber bearings Chinese production in Russian earthquake engineering. Promyshlennoe i grazhdanskoe stroitel'stvo, 2009, no. 7, pp. 54-55. (In Russian).
11. Mkrtychev O. V., Arutyunyan L. M. Comparative analysis of seismic isolation methods of buildings and structures in the form of lead-rubber and friction pendulum bearings. Stroitel'naya mekhanika i raschet sooruzheniy, 2014, no. 6, pp. 45-47. (In Russian).
12. Scheaua Fanel Seismic Isolators - Double Sliding Bearings [Сейсмоизоляторы - двойные маятниковые скользящие опоры]. RJAV, vol. IX, issue 2, 2012, pp. 91-94.
13. LS-DYNA. Keyword user's manual [Инструкция пользователя]. Vol. I, II. Livermore Software Technology Corporation (LSTC). 2206 p. - About Application of Damping Vibro-Extinguishing Elements in Design of a Building at Seismic Impact
- UDC 624.042.8:699.841
Sergey N. BUTYRSKIY, e-mail: serbut@mail.ru
Oleg A. KOVALCHUK, e-mail: oko44@mail.ru
National Research Moscow State University of Civil Engineering, Yaroslavskoe shosse, 26, Moscow 129337, Russian Federation
Abstract. The article gives a brief overview of seismic isolating elements of a building and a description of mathematical models describing the character of supports operation and methods of calculation for seismic impact. For calculation of the building, rubber-metal bearings are selected as seismic isolators. The impact of earthquake on the residential multistory building without and with the availability of damping vibro-extinguishing elements, rubber-metal seismic isolation bearings (RMSB), was simulated in the software package "Lira". Calculations and evaluation of the efficiency of the use of RMSBs were made. On the basis of selection of the rheological properties of the rubber used, the optimum parameters of bearings, at which the loads on the building structure are below critical ones, have been determined. An assessment of the reliability of elements of the building with the seismic isolation system in the form RMSB is presented. Disadvantages of the bearings used are the appearance of significant movements during the long-time seismic impact; to eliminate them it is possible to use the rubber-metal bearings system in combination with other means of the seismic protection.
Key words: seismic protection system, rubber-metal seismic isolation bearing, seismic isolator, damping, linear-spectral method, assessment of reliability. - REFERENCES
1. Skiner R. I., Robinson W. H., McVerry G. H. An introduction to seismic isolation. New Zealand, John Wiley & Sons, 1993. 353 p.
2. Chopra A. K. Dynamics of structures: theory and applications to earthquake engineering. New Jersey, 2012. 794 p.
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4. Smirnov V. I. The seismic isolation - modern seismic protection of buildings in Russia. Seysmostoykoe stroitel'stvo. Bezopasnost' sooruzheniy, 2013, no. 4, pp. 41-54. (In Russian).
5. Apsemetov M. Ch., Andashev A. Zh. Development of reliable and technologically advanced structures seismic isolation supports of elastic, plastic and anti-friction materials. Vestnik KGUSTA, 2012, no. 3, pp. 82-89. (In Russian).
6. Bunov A. A. Evaluation of the reliability of buildings with seismic isolation system of rubber steel supports. Dis. kand. tekhn. nauk. Moscow, MGSU Publ., 2014. 136 p. Available at: http://search.rsl.ru/en/record/01007887412 (accessed 05.09.2016).
7. Derov A. V., Maksimov G. A., Pozdnyakov S. G. Calculation of the vibrations of the building under the action of seismic load in the presence of a thin layer of elastomeric bearings. Nauchnaya sessiya MIFI, 2005, vol. 5, pp. 140-141. (In Russian).
8. Mavronicola E., Komodromos P. Assessing the suitability of equivalent linear elastic analysis ofseismically isolated multi-storey buildings. Journal of Computers and Structures, 2011, vol. 89, pp. 1920-1931.
9. Smirnov V. I., Vakhrina G. N. The development of models of calculated accelerograms of seismic effects. Seysmostoykoe stroitel'stvo. Bezopasnost' sooruzheniy, 2013, no. 1, pp. 29-39. (In Russian).
10. Ashkinadze G. N., Sokolov M. E., Martynova L. D., et al. Zhelezobetonnye steny seysmostoykikh zdaniy. Issledovaniya i osnovy proektirovaniya [Reinforced concrete walls of earthquake-resistant buildings. Research and design principles]. Moscow, Stroyizdat Publ., 1988. 504 p. (In Russian).
11. Drumya A. V., Stepanenko N. Ya., Simonova N. A. The strongest earthquakes of the Carpathian region in the XVIII-XX century. Buletinul institutului de geologie si seismologie al academiei de stiinte a Moldovei, 2006, no. 1, pp. 37-64. (In Russian).
12. Smirnov S. B., Ordobaev B. S., Aydaraliev B. R. Seysmicheskie razrusheniya - al'ternativnyy vzglyad [Seismic fracture - alternative view]. Bishkek, Ayat Publ., 2013. Vol. 2. 144 p. (In Russian).
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14. Catalogue on Elastomeric Isolators Series SI. FIP Industriale S.P.A., 2012. 16 p.
15. Kolchunov V. I., Osovskikh E. V., Fomisev S. I. The strength of the platform joints of reinforced concrete residential buildings with cross-wall system of prefabricated elements. Zhilishchnoe stroitel'stvo, 2009, no. 12, pp. 12-16. (In Russian).
16. Shapiro G. I., Shapiro A. G. Calculation of the strength of the platform joints of panel buildings. Promyshlennoe i grazhdanskoe stroitel'stvo, 2008, no. 1, pp. 55-57. (In Russian).
17. Alekhin V. N., Ivanov G. P., Pletnev M. V., Kokovikhin I. Yu., Ushakov O. Yu., Calculation of buildings on seismic effects. Akademicheskiy Vestnik Uralniiproekt RAASN, 2011, no. 2, pp. 64-66. (In Russian).
18. Bezdelev V. V. Numerical simulation of dynamic stress-strain state of buildings under seismic actions using optimization of parameters of damping devices. International Journal for Computational Civil and Structural Engineering, 2008, vol. 4, no. 2, pp. 24-25. (In Russian). - Temperature Conditions of an External Wall with Frame of Thermo-profile LSK
- UDC 69.022.3:699.86
Aleksandr A. PLOTNIKOV, e-mail: plaa@zmail.ru
National Research Moscow State University of Civil Engineering, Yaroslavskoe shosse, 26, Moscow 129337, Russian Federation
Abstract. The article considers the influence of "cold bridges" on the temperature condition of a design of an external wall with a framework of lightweight steel-framed constructions (LSK) in the form of a thermo-profile of 200 mm high, with longitudinal holes and insulation from mineral wool laid between profiles. The problem is solved by numerical methods in three stages. 1. The assessment of influence of perforation on the general thermal resistance of the thermo-profile with longitudinal holes reducing the conductivity is made and the numerical value of equivalent thermal resistance of a part of the thermo-profile with perforation is obtained. 2. Taking into account the received Rpr, the temperature condition of a fragment of horizontal section of the wall with the thermo-profiles arranged with the step of 600 mm and mineral wool insulation laid between profiles is calculated. Calculations show that on the internal surface of the wall, in the thermo-profile zone, there is a fall of temperature in comparison with the insulation zone by 2.50 °C, and the difference between temperatures of the air and the surface at this point is up to 6.05 °C that does not correspond to comfortable conditions. 3. An opportunity to increase the temperature on the internal surface of the wall due to an additional layer of the insulation laid outside, and several layers of gypsum cardboard on the internal surface is shown.
Key words: lightweight steel-framed constructions, thermo-profile, thermal resistance, mineral wool, numerical calculations, "cold bridges". - REFERENCES
1. European lightweight steel-framed construction. Printеd by Victor Buck, Luxembourg, 2005. 89 p.
2. Vatin N. I., Popova E. N. Termoprofil v legkix ctal"nix ctroitel'nix konstrukthiyx [The thermal profile in light steel building structures]. Saint Petersburg, SpbGPU Publ., 2006, 63 p. (In Russian).
3. Kuz'menko D. V., Vatin N. I. Enclosing structure "zero thickness" - Thermopanel. Inzhenerno-stroitelnyy zhurnal, 2008, no. 1, pp. 13-21. (In Russian).
4. Tusnina V. M. Prospects of construction of affordable and comfortable housing on the basis of steel frameworks. Promyshlennoe i grazhdanskoe stroitel'stvo, 2015, no. 6, pp. 43-46. (In Russian).
5. Kornilov Т. A., Gerasimov G. N. Some errors in design and construction of low-rise houses made of light steel thin-walled structures under conditions of the far north. Promyshlennoe i grazhdanskoe stroitel'stvo, 2015, no. 3, pp. 41-45. (In Russian)
6. Santos P., Martins C., Da Silva L. S., Braganca L. Thermal performance of lightweight steel framed wall: The importance of flanking thermal losses. Journal of Building Physics, 2014, vol. 38, iss. 1, pp. 81-98.
7. Ferrari S., Zanotto V.The thermal performance of walls under actualservice conditions : Evaluating the results of chamber testsclimatic. Construction and Building Materials, 2013, vol. 43, pp. 309-316.
8. Gorgolewski M. Developing a simplified method of calculating U-values in light steel framing. Building and Environment, 2007, no. 42(1), pp. 230-236. - Bearing Capacity and Deformability of Connections on Inclined Rods with Combo Washers
- UDC 624.011
Vladimir I. LINKOV, e-mail: Linkov_kdip@mail.ru
National Research Moscow State University of Civil Engineering, Yaroslavskoe shosse, 26, Moscow 129337, Russian Federation
Abstract. Results of the experimental study of connections of wooden elements on inclined metal rods with combo washers, a kind of the so-called NMS-connections or connections of wooden elements on inclined metal rod with no glue usage, are presented. The comparison of the bearing capacity and deformability of NMS-connections on the combo washers and on the inclined screwed rods is made. Methods for conducting tests are considered. The bearing capacity of NMS-connections with combo washers according to the methodology of the TSNIISK named after V.A. Kucherenko is analyzed. The comparison of bearing capacity and deformability of NMS-connections is made with due regard for such criteria as a breaking load, the upper boundary of elastic operation area, force for achieving the ultimate strain as well as the deformability criterion of NMS-connections, absolute value of total deformations, proportion of elastic and residual deformations for each type of NMS-connections. The direction of further development and improvement of connections on inclined metal rods without the use of glue is indicated.
Key words: connections of wooden elements on inclined rods, breaking load, upper boundary of the elastic operation area, estimated bearing capacity, connection strain. - REFERENCES
1. Lin'kov V. I. Constructions on the basis of wood elements of composite section with joints on inclined metal rods without the use of glue. Promyshlennoe i grazhdanskoe stroitel'stvo, 2012, no. 11, pp. 29-31. (In Russian).
2. Lin'kov V. I. Modeling of work of wooden beams of composite sections in malleable relationships using the theory of composite rods of A. R. Rzhanitsina. Stroitel'naja mehanika i raschet sooruzhenij, 2011, no. 5, pp. 30-35. (In Russian).
3. Koval'chuk L. M., Turkovskij S. B., Piskunov Yu. V. Derevjannye konstrukcii v stroitel'stve [Wooden structures in construction]. Moscow, Strojizdat Publ., 1995. 248 p. (In Russian).
4. Turkovskij S. B., Pogorel'tsev A. A., Preobrazhenskaya I. P. Kleenye derevjannye konstrukcii s uzlami na vkleennyh sterzhnjah v sovremennom stroitel'stve (sistema CNIISK) [Glued wooden structures with nodes on glued the rods in modern construction system CNIISK]. Moscow, Strojmaterialy Publ., 2013. 308 p. (In Russian).
5. Lin'kov N. V. Bearing capacity of wooden beams of composite sections at the joint "KM-Liner". Vestnik MGSU, 2011, no. 1, vol. 2, pp.161-167. (In Russian).
6. Lin'kov N. V. Stress-strain state of cross section wooden beams on composite connections at long-term load. Promyshlennoe i grazhdanskoe stroitel'stvo, 2015, no. 7, pp. 44-48. (In Russian).
7. Lin'kov V. I. The deformability of joints of wooden elements on inclined screw-in terminals. Nauchno-tehnicheskij vestnik Povolzh'ja, 2013, no. 5, pp. 247-250. (In Russian).
8. Lin'kov V. I. Comparative evaluation of bearing capacity and deformability of NMS connections on the inclined screw in rods and bolts. Nauchnoe obozrenie, 2015, no. 14, pp. 117-122. (In Russian). - Architecture of buildings and structures. Town planning
- Sustainable Development of Transport Transit Hubs in Urban Planning
- UDC 711.553
Denis N. VLASOV, e-mail: vlasych@mail.ru
Nina V. DANILINA, e-mail: nina_danilina@mail.ru
National Research Moscow State University of Civil Engineering, Yaroslavskoe shosse, 26, Moscow 129337, Russian Federation
Abstract. The article presents the results of research in the field of forming of high-quality environment in urban transit transport hubs in accordance with actual present trends of sustainable development of urban territories. Foundations of the original methodological approach to the assessment of sustainability of the transport hub development based on the adaptation of principles of the classical concept of sustainable development for functioning conditions of transport hubs located on urban territories are outlined. There is a set of criteria that determine the transport, social, environmental and economic aspects of sustainable development of the transport hub that meet the world standards of quality of transport and social services and the requirements for coordination of the hub operation with adjacent urban systems. Description of the method of graphical display of results evaluation according to the total indicator of each of the aspect is presented. The methodology proposed makes it possible to assess the level of compliance of the transport hub with the requirements of the sustainable development concept and it can be used in the practice of urban and transport planning and designing, as well as in scientific work when studying the issues of sustainable development of urban transport. Examples of the approbation of this methodology for assessing the sustainable development of transport hubs which reflect the urban development approach to the sustainable design in various capitals of the world are presented.
Key words: transport hub, sustainable development, evaluation criteria of sustainable development, urban planning. - REFERENCES
1. Shcherbina E. V., Slepnev M. A. The system of town-planning regulations for sustainable development of territories. Nauchnoe obozrenie, 2016, no. 6, pp. 240-244. (In Russian).
2. Suzuki H., Cervero R., Luchi K. Transforming cities with transit. Transit and land-use integration for sustainable urban development. The World Bank, Washington DC. 2013, 432 p.
3. Vlasov D. N. Nauchno-metodologicheskie osnovy razvitiya aglomeratsionnykh sistem transportno-peresadochnykh uzlov (na primere Moskovskoy aglomeratsii) [Scientific-methodological bases of development of the agglomeration system of transport hubs (for example, the Moscow agglomeration)]. Diss. d-ra tekhn. nauk. Moscow, MGSU Publ., 2013. Available at: http://www.dslib.net/grado-stroj/nauchno-metodologicheskie-osnovy-razvitija-aglomeracionnyh-sistem-transportno.html (accessed 04.08.2016). (In Russian).
4. Vlasov D. N. Principles of development focused on mass transport, in planning foreign hubs. Arkhitektura i stroitel'stvo Rossii, 2015, no. 8(212), pp. 20-29. (In Russian).
5. Vlasov D. N., Shirokaya N. V. Patterns in the development hubs. Gradostroitel'stvo, 2016, no. 2(42), pp. 6-11. (In Russian).
6. Slepnev M. A., Marshalkovich A. S. Pollution of urban air environment by automobile transport on the livelihoods of the population. Vestnik MGSU, 2010, no. 4-5, pp. 141-146.
7. Vlasov D. N. The structure and composition of regulatory requirements for urban hubs. Gradostroitel'stvo, 2015, no. 3(37), pp. 11-19. (In Russian).
8. Danilina N. V. Aspekty ustoychivogo razvitiya sistemy transportnogo obsluzhivaniya urbanizirovannykh territoriy [Aspects of sustainable development of the transport service system of urban territories]. Sotsial'no-ekonomicheskie problemy i perspektivy razvitiya territoriy [Socio-economic problems and prospects of development of territories]. Sbornik nauchnykh statey po materialam I Mezhdunarodnoy nauchno-prakticheskoy konferentsii. 2016. Pp. 39-43. (In Russian).
9. Sherbina E. V., Danilina N. V., Vlasov D. N. City planning issues for sustainable development. International Journal of Applied Engineering Research, 2015, vol. 10, no. 22, pp. 43131-43138.
10. Litman T. Well Measured. Developing indicators for sustainable and livable transport planning. Victoria Transport Policy Institute, USA, Victoria, 2012. 105 p.
11. Vlasov D., Danilina N. Scientific and methodological basis of development of the park-and-ride facilities in the intermodal transport hubs of Moscow agglomeration. Advanced Materials Research, 2014, vols. 869- 870, pp. 201-204. Doi:10.4028/www.scientific.net/ AMR.869-870.201.
12. Sarmiento C., Zamorano L., King R., et al. Transit-oriented development (TOD) guide for urban communities. EMBARQ Mexico, Mexico, 2014. 250 p. - Economics, management, marketing
- Main Challenges and Directions of Strategic Development of Housing-and-Communal Complex
- UDC 69.003:69.059.1
Ariadna N. KIRILLOVA, e-mail: kirillova_an@mail.ru
National Research Moscow State University of Civil Engineering, Yaroslavskoe shosse, 26, Moscow 129337, Russian Federation
Abstract. The present article is devoted to the actual issues regarding prospective directions of the Housing-and-Communal Complex (hereinafter - HCC) development in connection with the elaboration of sectoral strategies and target programs of socio-economic development of territories. The strategy of HCC development covers the construction and operational maintenance of the housing objects, communal infrastructure facilities, methods and approaches to the process of investments formation, implementation mechanisms on the basis of municipal unitary enterprises corporatization, concessions, leasing of municipally-owned utilities systems, attraction of public-private partnerships for the implementation of large investment projects and programs of complex reconstruction of the existing housing objects. The article proposes the model of HCC strategic development that includes targets, the concept, selecting process and road map. The article also presents the multi-factor function of determination of the strategic potential of municipal HCC development on the basis of assessment of the invest potential of the municipality's HCC, urban budget means and financial resources allocated for modernization and replacement of the fixed assets, as well as private investors potential, remaining (residual) value of the fixed assets and the full cycle of expanded reproduction of the housing-and-communal real estate objects with due regard for the economic potential of the region, volumes of housing-and-communal services actually rendered, amounts of investments into the HCC, etc. On the basis of analysis of a number of regional and municipal strategies, summarizing of their targets, tasks and road maps, the complex of main program directions of the HCC strategic development as the most important subsystem of the strategy of socio-economic development of regions is formulated.
Key words: Housing-and-Communal Complex (HCC), multi-factor function of determination of strategic potential of municipal HCC development, main program directions of the HCC strategic development. - REFERENCES
1. Kuleshov V. V. Contemporary challenges for socio-economic development of Russia. EKO, 2014, no. 12, pp. 5-14. (In Russian).
2. Kirillova A. N., Trukhina N. I. Strategy of development and functioning of housing and communal complex. Finansy, ekonomika, strategiya, 2015, no. 7, pp. 31-36. (In Russian).
3. Porfir'ev B. N., Shirov A. A. The imperatives of economic growth and risk management for economic development in Russia. Problemy prognozirovaniya, 2016, no. 6. Available at: http://www.ecfor.ru/fp/ (accessed 12.07.2016). (In Russian).
4. Lutsenko D. V., Privezentsev M. V., Temnikov M. V. Upravlenie investitsionnymi protsessami v zhilishchno-kommunal'nom komplekse goroda: organizatsionno-ekonomicheskoe regulirovanie [Management of investment processes in the housing sector: organizational and economic regulation]. Moscow, YuNITI-DANA Publ., 2015, pp. 299-306. (In Russian).
5. Abdukhanova N. G. Public-private partnership - the path to innovative development of housing and communal complex. Rossiyskoe predprinimatel'stvo, 2015, vol. 16, no. 19, pp. 3217-3224. (In Russian).
6. Strategicheskoe planirovanie, problemy i perspektivy realizatsii v sisteme gosudarstvennogo upravleniya rossiyskoy ekonomikoy [Strategic planning, problems and prospects of realization in the system of state management of the Russian economy]. Sb. nauch. statey. Moscow, GUP "Ekonomika" Publ., 2012. 290 p. (In Russian).
7. Strategiya razvitiya zhilishchno-kommunal'nogo khozyaystva v Rossiyskoy Federatsii do 2020 g. [Strategy of development of housing and communal services in the Russian Federation until 2020]. URL: http://government.ru/media/files/odOGmhKTIRIRwsALMIXUYmU6gIjeg2pS.pdf (accessed 10.07.2016). (In Russian).
8. Posazhenikov A. A. Model of strategic development of housing and communal complex focused on achieving a synergistic effect. Ekonomika i sotsium, 2014, no. 2-3 (11), pp. 1110-1113. (In Russian).
9. Kharchenko K. V. The development of housing and communal services as object of strategic planning. Upravlenie gorodom: teoriya i praktika, 2015, no. 2, pp. 55-62. (In Russian).
10. Yumatov A. S., Komarov N. A. The model estimates the main directions of development of housing and communal services of the municipality at the present stage. Intellekt. Innovatsii. Investitsii, 2014, no. 1, pp. 115-121. (In Russian).
11. Minaev N. N., Kolykhaeva Yu. A., Filyushina K. E., Seliverstov A. A., Merkul'eva Yu. A. Targeted management of the development of housing and communal complex. Nauchnoe obozrenie, 2015, no. 24, pp. 338-342. (In Russian). - Information systems in construction
- Information Approach to Solving Organizational Problems is the Basis of Progress in Construction
- UDC 69:003:65.014.011.56
Andrey A. MOROZENKO, e-mail: morozenkoaa@mgsu.ru
National Research Moscow State University of Civil Engineering, Yaroslavskoe shosse, 26, Moscow 129337, Russian Federation
Abstract. The article is dedicated to solving one of the most urgent tasks - improving the efficiency of construction production on the basis of rational forming of the organizational structure of investment-construction projects. Considering the qualities of the organizational structure of the investment-construction projects, the author highlights the qualities of flexibility and stability as major competitive advantages. The author reveals the main trend in the development of organizational structures of companies, which consists in the most complete compliance of the organizational structure to the environment requirements, and focuses the research of the properties of the organizational structure from the standpoint of the information approach. Such approach makes it possible, for the first time ever, to propose a methodology of assessing the flexibility of investment-construction projects on the basis of the value of pragmatic information. The author suggests a methodology for creating the reflex- adaptive organizational structure of investment-construction projects. Issues of the function of the reflex-adaptive organizational structure of investment-construction projects depending on their life cycles are considered.
Key words: reflex-adaptive organizational structure, matrix of investment- construction project, information index of flexibility, sustainability of organizational structure. - REFERENCES
1. Volkov A. A., Anikin D. V. Functional model of the life cycle of corporate information space in construction organizations. Vestnik MGSU, 2013, no. 11, pp. 226-233. (In Russian).
2. Ginzburg A. V., Nesterova E. I. Technology of continuous information support of life cycle of construction object. Vestnik MGSU, 2011, no. 5, pp. 317-320. (In Russian).
3. Lapidus A. A. Efficiency potential of management and technical solutions for a construction object. Vestnik MGSU, 2014, no. 1, pp. 175-180. (In Russian).
4. Telichenko V. I. What is information? Avtomatizatsiya zdaniy, 2012, no. 4 (55), Available at: www.vrsystems.ru/stati/valerii_ telichenko_chto_takoe_informaciya.htm (accessed 17.08.2016). (In Russian).
5. Kharkevich A. A. Izbrannye trudy v trekh tomakh. Teoriya informatsii. Opoznanie obrazov [Selected works in three volumes. Vol. 3. The theory of information. The identification of the images]. Moscow, Nauka Publ., 1973. 524 p. (In Russian).
6. Morozenko A. A., Telichenko V. I. Appraisal of flexibility of investment-building project on the basis of Information approach. Promyshlennoe i grazhdanskoe stroitel'stvo, 2012, no. 4, pp. 62-65. (In Russian).
7. Telichenko V. I., Morozenko A. A. Methodological principles for assessment of investment construction projects with the use of information approach. 14th International conference on computing in civil and building engineering. Moscow, ASV Publ., 2012, pp. 510-511. (In England).
8. Morozenko A. A. A synergistic approach to increased flexibility of an investment construction project on the basis of the criterion of stability of Nyquist-Mikhailov. Vestnik MGSU, 2012, no. 8, pp. 203-206. (In Russian).
9. Morozenko A. A. Reflex-adaptive organizational structure model of construction investment projects. Vestnik Povolzh'ya, 2013, no. 3, pp. 209-213. (In Russian).
10. Morozenko A. A. Reflex-adaptive type of organic structures of construction enterprises. Promyshlennoe i grazhdanskoe stroitel'stvo, 2013, no. 8, pp. 72-74. (In Russian).
11. Ershov M. N., Ishin A. V., Oleynik P. P., et al. Organizational and technological activities in the implementation of model projects. Tekhnologiya i organizatsiya stroitel'nogo proizvodstva, 2014, no. 4, pp. 6-11. (In Russian). - Building Life Cycle Information Modelling
- UDC 658.512:69
Alexander V. GINZBURG, e-mail: ginav@mgsu.ru
National Research Moscow State University of Civil Engineering, Yaroslavskoe shosse, 26, Moscow 129337, Russian Federation
Abstract. The article deals with issues of building information models in construction. There are review of models of different levels: classical 2D drawings, 3-dimentional - 3D models, models that include time indicators - 4D, models, complemented by financial indicators - 5D, models containing information on a wide range of resource and other indicators - N-D. It was highlighted the importance of an integrated approach to the formation of the building information model - BIM. Today BIM-technology is used only at the design stage and partially under construction. However, the greatest impact can be obtained at the operational stage. Usage of BIM-models is only effective when dealing with them at all stages of the life cycle of building object. In this connection, it is proposed to introduce the concept of Building Life Cycle Information Modelling - BLC IM. There is review of the reasons, predetermining the problem of mass introduction BLC IM in construction practice. The contradictory interests of participants in the construction process, lack of common goals are not allow to create and use a common information model. BLC IM system can be considered as an element of a higher level system. It is proposed to introduce the concept of Living Environment Information Modelling - LE IM. LE IM is considered as urban planning and zoning tools, tools for creating up schemes of regional and industry development, the formation of regional and federal target programs.
Key words: Information Modelling (IM), CAD-systems, N-D design, Building Information Modelling (BIM), life cycle of building, Building Life Cycle Information Modelling (BLC IM), Living Environment Information Modelling (LE IM). - REFERENCES
1. Talapov V. V. Tekhnologiya BIM. Sut' i osobennosti vnedreniya informatsionnogo modelirovaniya zdaniy [BIM Technology. Essence and features of building information modeling introduction]. Moscow, DMK Press Publ., 2015. 410 p. (In Russian).
2. Ginzburg A. V., Nesterova E. I. Technology of continuous information support of building life cycle. Vestnik MGSU, 2011, no. 5, pp. 317-320. (In Russian).
3. Volkov A. A., Petrova S. N., et al. Informatsionnye sistemy i tekhnologii v stroitel'stve [Information management systems and data processing technologies in civil engineering]. Moscow, MGSU Publ., 2015. 424 p. (In Russian).
4. Volkov A. A. Intelligence of buildings: formula. Promyshlennoe i grazhdanskoe stroitelstvo, 2012, no. 3, pp. 54-57. (In Russian).
5. Ginzburg A., Ryzhkova A. Accounting "pure" risks in early stage of investment in construction projects with energy efficient technologies in use [Учет "чистых" рисков на ранней стадии инвестирования в строительные проекты с применением энергоэффективных технологий]. Applied Mechanics and Materials, 2014, vol. 672-674, pp. 2221-2224.
6. Ginzburg A., Kachanov S. Methodology for building automated systems for monitoring engineering (load-bearing) structures, and natural hazards to ensure comprehensive safety of buildings and constructions [Методика создания автоматизированных систем мониторинга инженерных (несущих) конструкций, опасных природных процессов и явлений для комплексного обеспечения безопасности зданий и сооружений]. International Journal of Applied Engineering Research, 2016, vol. 11, no. 3, pp. 1660-1665.
7. Volkov A. General information models of intelligent building control systems: basic concepts, determination and the reasoning [Базовые информационные модели систем управления интеллектуальным зданием: основные понятия, определения и рассуждения]. Applied Mechanics and Materials, 2014, vol. 838-841, pp. 2973-2976.
8. Volkov A., Chulkov V., Kazaryan R., Gazaryan R. Cycle reorganization as model of dynamics change and development norm in every living and artificial beings [Цикл реорганизации как модель динамического изменения и нормы развития в живом и неживом мире]. Applied Mechanics and Materials, 2014, vol. 584-586, pp. 2685-2688.
9. Volkov A., Sedov A., Chelyshkov P. Usage of building information modelling for evaluation of energy efficiency [Использование информационного моделирования зданий для оценки энергоэффективности]. Applied Mechanics and Materials, 2013, vol. 409-410, pp. 630-633.
10. Garyaeva V. V., Garyaev N. A. Integrated assessment of the technical condition of the housing projects on the basis of computer technology [Комплексная оценка технического состояния жилищного строительства на основе компьютерных технологий]. Computing in Civil and Building Engineering, 2014, pp. 1336-1343. Doi:10.1061/9780784413616.166. - ABC-XYZ Analysis of Individual Construction Objects
- UDC 69.003.13
Alexander I. KONIKOV, e-mail:
a.konikov@gmail.com
National Research Moscow State University of Civil Engineering, Yaroslavskoe shosse, 26, Moscow 129337, Russian Federation
Grigorii A. KONIKOV, e-mail: gkonikov@hotmail.com
KROK Inkorporeyted, ul. Volochaevskaya, 5, korp., 1, Moscow 111033, Russian Federation
Abstract. The work explores marketing methods based o the analysis of ABC, XYZ type. Consideration is made for a specific subject area related to the individual construction. The proposed methodology can be used to analyzing other construction objects, as well as for other industries. In the latter case, amendments must be made with due regard for the specificity of a concrete industry. For a better understanding and clearness, the authors use elements of the theory of sets. Implementation of these methods is relayed on the use of a spreadsheet (the presentation of the material is made in relation to MS Excel, however the software product OpenOffice Calc also can be used). The realization on the com of most methods considered in the article puter does not require knowledge of relatively complex material, VBA programming for example. All this expands the range of possible users.
Key words: ABC-analysis, XYZ-analysis, individual construction, theory of sets, object record. - REFERENCES
1. Konikov A. I., Konikov G. A. Improving the effectiveness of ABC analysis by use rationing data. Aspirant i soiskatel', 2016, no. 2 (92), pp. 18-20. (In Russian).
2. Evteev B. V. Approach to the comparison of the methods of grouping of material resources in marketing and logistics. SWorld, 2015, no. 4(41), vol. 14, pp. 63-68. (In Russian).
3. Evteev B. V. Use data analysis methods for process automation of logistic management. SWorld, 2014, no. 1, vol. 20, pp. 68-72. (In Russian).
4. Evteev B. V. On automating decisions some tasks, marketing and logistics by using MS Excel. Sovremennye aspekty ekonomiki, 2013, no. 10 (194), pp. 153-156. (In Russian).
5. Konikov A. I. New Lines in Teaching Information Sience in Higher Education Institutijns of Economic. Vestnik REU im. G. V. Plekhanova, 2014, no. 4 (58), pp. 42-46. (In Russian).
6. Konikov A., Konikov G. Multivariate analysis of construction projects. Applied Mechanics and Materials, 2014, vol. 584-586, pp. 2171-2174.
7. Ivanov N. A., Ivanova M. A. Semantic network as a way to view records of discrepancies in quality management systems. Ekonomika i predprinimatel'stvo, 2014, no. 9 (50), pp. 821-823. (In Russian).
8. Kodenko E. A., Ivanov N. A. The problem of selecting the model of corporate information system for a construction company. Promyshlennoe i grazhdanskoe stroitel'stvo, 2014, no. 5, pp. 69-72. (In Russian).
9. Klashanov F. K. Methods and methodology of formalization of decision-making in construction. Vestnik MGSU, 2011, no. 1, vol. 1, pp. 329-336. (In Russian).
10. Klashanov F. K. The theoretical bases of construction models of management in construction. Vestnik grazhdanskikh inzhenerov, 2013, no. 5 (40), pp. 208-212. (In Russian). - Structural mechanics
- Analytical Solutions for Structural Elements of a Frame Building
- UDC 624.04:699.842:69.057.122
Oleg A. KOVALCHUK, e-mail: oko44@mail.ru
National Research Moscow State University of Civil Engineering, Yaroslavskoe shosse, 26, Moscow 129337, Russian Federation
Abstract. This article is devoted to formation of a rod model on the basis of analytical expressions describing the elements of building frame and taking into account their physical condition. The analytical expressions relating the internal characteristics of the straight bars with boundary conditions at the nodes (the equation of state of the rod) have been made. These formulas are used for subsequent modeling of the design of a frame building by the method of super-elements (MSE). To represent the state of the super-element (SE) through the movements of the rod ends, it is proposed to use the analytical equations of state of straight homogeneous elastic rod. Taking into account that the basic elements of modern frame buildings are rods (skeleton), the use of an analytical model "rod-superelement" is quite rational. The use of analytical models makes it possible to more fully account the state of bearing structures of the frame when executing, for example, the analysis of survivability of buildings at partial destruction of elements.
Key words: rod elements, frame building, analytical model, super elements method, equations of rod state, boundary conditions. - REFERENCES
1. Bondarenko V. M., Kolchunov V. I., Vorob'ev E. D. Structural safety frames residential buildings. Byulleten' stroitel'noy tekhniki, 2004, no. 1, pp. 8-11. (In Russian).
2. Rayzer V. D. To the problem of survivability of buildings and structures. Stroitel'naya mekhanika i raschet sooruzheniy, 2012, no. 5, pp. 77-78. (In Russian).
3. Strugatskiy Yu. M., Shapiro G. I. The safety of the Moscow residential buildings of mass series in case of emergencies. Promyshlennoe i grazhdanskoe stroitel'stvo, 1998, no. 8, pp. 37-41. (In Russian).
4. Tamrazyan A. G., Stepanov A. Yu., Parfenov S. G. Structural safety of reinforced concrete structures of buildings and structures under beyond-design impacts. Sb. tr. 2-oy Vserossiyskoy (Mezhdunarodnoy) konferentsii po betonu i zhelezobetonu. "Beton i zhelezobeton: puti razvitiya" [Proc. of 2-nd all-Russian (International) conference on concrete and reinforced concrete "Concrete and reinforced concrete: ways of development"]. Moscow, Dipak Publ., 2005, vol. 6, pp. 92-100. (In Russian).
5. Belostotskiy A. M., Kalichava D. K. Mathematical modeling as a basis for the monitoring of buildings and structures. International Journal for Computational Civil and Structural Engineering, 2010, vol. 6, no. 1-2, pp. 78-79. (In Russian).
6. Koval'chuk O. A. Modeling spatial truss systems by finite element method. Stroitel'stvo: nauka i obrazovanie, 2012, no. 1, pp. 1-6. (In Russian).
7. Ogurtsov Yu. N. Implementation of a multilevel super-element approach to structural analysis. Stroitel'naya mekhanika i raschet sooruzheniy, 1989, no. 5, pp. 50-54. (In Russian).
8. Pletnev V. I., Sergeev M. V. Super-element analysis of buildings and structures in the form of the method of forces. Izvestiya vuzov. Stroitel'stvo i arkhitektura, 1998, no. 10, pp. 116-119. (In Russian).
9. Sainov M. P. The ability of the method of substructures to the solution of nonlinear problems of stress-strain state of dams. Vestnik MGSU, 2010, no. 4-2, pp. 339-345. (In Russian).
10. Gorodetskiy A. S. The possibility of using superelements in the solution of various problems of structural mechanics. Stroitel'naya mekhanika i raschet sooruzheniy, 2015, no. 6 (263), pp. 51-56. (In Russian).
11. Ivanov Yu. I. The method combines the calculation of substructures. Uchenye zapiski TsAGI, 1976, vol. VII, no. 1, pp. 75-79. (In Russian).
12. Tamrazyan A. G., Koval'chuk O. A. The matrix effect of the model of element is a straight rod with transverse cracks on the dynamic state of the elastic and linearly viscoelastic bodies. Vestnik NITS "Stroitel'stvo", 2011, no. 3-4, pp. 120-130. (In Russian).
13. Safronov V. S., Katembo A. L. The calculation of the bearing capacity of eccentrically compressed rod of reinforced concrete with the use of a deformation model. Stroitel'naya mekhanika i konstruktsii, 2016, vol. 1, no. 12, pp. 64-74. (In Russian).
14. Gordon V. A., Tamrazyan A. G., Savostikova T. V. The dynamic stresses in the reinforcement bar at a sudden cracking. Vestnik NITS "Stroitel'stvo", 2010, no. 2, pp. 167-176. (In Russian).
15. Kolchunov V. I., Yakovenko I. A. On the use of the hypothesis of flat sections in reinforced concrete. Stroitel'stvo i rekonstruktsiya, 2011, no. 6, pp. 16-23. (In Russian). - Modern Concept of Integrated Model of Seismic Ground Motion for Earthquake Engineering
- UDC 624.042.7
Yury P. NAZAROV, e-mail: nazarov@eurosoft.ru
TSNIISK named after V. A. Kucherenko, OJSC SRC "Stroitelstvo", 2-ya Institutskaya ul., 6, Moscow 109428, Russian Federation
Elena V. POZNYAK, e-mail: PozniakYV@mpei.ru
National Research University "Moscow Power Engineering Institute", Krasnokazarmennaya 14, Moscow 111250, Russian Federation
Abstract. The engineering analysis of ground seismic motion and the account of possible rotations in the calculation is a necessary component of the seismic calculation in the construction industry especially concerning high-rise buildings and construction of new architectural forms. The aim of this paper is highlighting some important aspects of the wave integrated approach to seismic resistance theory: determination of dominant lengths of seismic waves, establishment of the type of seismic ground motion (integrated dilatation, integrated rotary and differential), definition of a generalized wave model, the averaging of wave ground motion under the building foundation, the computing of seismic rotations. Methods of the analysis of wave properties of the seismic motion, including the substantiation of the necessity to take into account rotations and reducing the intensity of seismic motion with the help of reducing coefficients, as well as calculation formulas for obtaining three rotation accelerograms are presented. These procedures are worked out and used in seismic analyses in TSNIISK named after V. A. Kucherenko (Moscow, Russia). The Odyssey Software, created by engineers of Laboratory of Automation and Design and Eurosoft Company is used for the analysis of records and determination of integral parameters of seismic excitation.
Key words: seismic resistance, seismic waves, integrated model, differential model, seismic rotations. - REFERENCES
1. Rasskazovskiy V. T. A local model of the seismic field and the angular displacement of the structures. Byul. inzh. seysmologii, 1989, no. 13, pp. 5-13. (In Russian).
2. Khachiyan E. E. Prikladnaya seysmologiya [Applied seismology]. Erevan, Gitutyun NAN RA Publ., 2008. 491 p. (In Russian).
3. Nikolaenko N. A., Nazarov Yu. P. Dinamika i seysmostoykost' sooruzheniy [Dynamics and seismic stability of structures]. Moscow, Stroyizdat Publ., 1988. 308 p. (In Russian).
4. Nazarov Yu. P. Analiticheskie osnovy rascheta sooruzheniy na seysmicheskie vozdeystviya [Analytical framework the analysis of structures for seismic effects]. Moscow, Nauka Publ., 2010. 468 p. (In Russian).
5. Nazarov Yu. P. Raschetnye modeli seysmicheskikh vozdeystviy [The analysis model of seismic effects]. Moscow, Nauka Publ., 2012. 414 p. (In Russian).
6. Nazarov Yu. P., Poznyak E. V. The definition of the dynamic factor in the calculations for seismic. Stroitel'stvo: nauka i obrazovanie, 2015, no. 1, pp. 2. Available at: http: www.nso-journal.ru (accessed 18.05.2016). (In Russian).
7. Lee V. W., Trifunac M. D. Torsional accelerograms. Soil Dynamics and Earthquake Engineering, 1985, vol. 4, pp. 132-138.
8. Lee V. W., Trifunac M. D. Rocking strong earthquake accelerations. Soil Dynamics and Earthquake Engineering, 1987, vol. 6, pp. 75-89.
9. Newmark N. M. Torsion in symmetrical building. Proc. 4th World Conf. Earthquake Engineering, Santiago. 1969. Pp. 19-32.
10. N'yumark N., Rozenblyuet E. Osnovy seysmostoykogo stroitel'stva [Fundamentals of earthquake engineering]. Moscow, Stroyizdat Publ., 1980. 344 p. (In Russian).
11. Nazarov Yu. P., Poznyak E. V., Filimonov A. V. Wave model analysis and calculation of seismic impact parameters for a high-rise building. Promyshlennoe i grazhdanskoe stroitel'stvo, 2014, no. 5, pp. 40-45. (In Russian).
12. Nazarov Yu. P., Poznyak E. V., Filimonov A. V. A brief theory and computing of seismic ground rotations for structural analyses. Soil Dynamics and Earthquake Engineering, 2015, no. 71, pp. 31-41. - Water supply, sewerage, building systems of water resources protection
- Modeling Of Suspension Filtration in a Porous Medium with Changing Flow Direction
- UDC 519:532.546.2
Yuri P. GALAGUS, e-mail: coneil@mail.ru
Galina L. SAFINA, e-mail: minkinag@mail.ru
National Research Moscow State University of Civil Engineering, Yaroslavskoe shosse, 26, Moscow, 129337, Russian Federation
Abstract. The actual problem of underground hydromechanics, filtration of suspension in a porous medium, is considered. Solid particles of the same size move together with the fluid flow through the filter with pores of different sizes. They pass freely through the large pores and get stuck to the inlet of pores the diameter of which is less than the particle size. At the moment, when the front of particle concentration reaches the filter outlet, the filter cleaning begins: in the opposite direction to the input side of the filter, the flow of liquid without particles begins to flow. When the liquid reaches the filter input, the suspension starts flowing again at the filter input, etc. The lifting of retained particles in the moments of change in the fluid flow direction is modeled. Dependences of concentrations of suspended and retained particles on the time and passed way are preset by the system of quasi-linear differential equations of the first order in quotient derivatives. Calculation of the task is performed by the method of finite differences according to the explicit scheme. The numerical calculation shows that the oscillations of concentrations of suspended and retained particles rapidly reach a periodic mode.
Key words: suspension, porous medium, filtration task, suspended and retained particles, numerical calculation. - REFERENCES
1. Mays D. C., Hunt J. R. Hydrodynamic aspects of particle clogging in porous media [Гидродинамические аспекты задержания частиц в пористой среде]. Environmental Science and Technology, 2005, vol. 39, pp. 577-584.
2. Tien C., Ramarao B. V. Granular filtration of aerosols and hydrosols [Гранулированная фильтрация аэрозолей и гидрозолей]. Amsterdam, Elsevier Publ., 2007.
3. Vidali M. Bioremediation [Биоремедиация]. An overview, Pure and Applied Chemistry, 2001, vol. 73, pp. 1163-1172.
4. Yao K. M., Habibian M. T., O'Melia C. R. Water and waste water filtration: Concepts and applications [Фильтрация воды и сточных вод: концепции и приложения]. Environmental Science and Technology, 1971, vol. 5, pp. 1105-1112.
5. Bradford S. A., Torkzaban S., Shapiro A. A theoretical analysis of colloid attachment and straining in chemically heterogeneous porous media [Теоретический анализ коллоидных связей и напряжений в химически гетерогенных пористых средах]. Langmuir, 2013, vol. 29, pp. 6944-6952.
6. Shin J. Y., Spinette R. F., O'Melia C. R. Stoichiometry of coagulation revisited [Стехиометрия повторной коагуляции]. Environmental Science and Technology, 2008, vol. 42, pp. 2582-2589.
7. Torkzaban S., Wan J., Tokunaga T. K., Bradford S. A. Impacts of bridging complexation on the transport of surface-modified nanoparticles in saturated sand [Воздействие комплексов связей на перенос наночастиц с модифицированной поверхностью в насыщенном песке]. Journal of Contaminant Hydrology, 2012, vol. 136-137, pp. 86-95.
8. Noubactep C., Carй S. Dimensioning metallic iron beds for efficient contaminant removal [Определение размеров металлических фильтров для эффективного удаления загрязнений]. Chemical Engineering Journal, 2010, vol. 163, pp. 454-460.
9. Bedrikovetsky P. Upscaling of stochastic micro model for suspension transport in porous media [Макроусреднение стохастической микромодели движения суспензии в пористой среде]. Transport in Porous Media, 2008, vol. 75, pp. 335-369.
10. Badalyan A., You Z., Aji K., Bedrikovetsky P., Carageorgos T., Zeinijahromi A. Size exclusion deep bed filtration: Experimental and modelling uncertainties [Глубинная фильтрация с размерным захватом частиц: неопределенности экспериментов и моделирования]. Review of Scientific Instruments, 2014, vol. 85, iss. 1.
11. Vyazmina E. A., Bedrikovetskii P. G., Polyanin A. D. New classes of exact solutions to nonlinear sets of equations in the theory of filtration and convective mass transfer [Новые классы точных решений нелинейных систем уравнений в теории фильтрации и конвективного переноса масс]. Theoretical Foundations of Chemical Engineering, 2007, vol. 41, iss. 5, pp. 556-564.
12. You Z., Bedrikovetsky P., Kuzmina L. Exact Solution for Long-Term Size Exclusion Suspension-Colloidal Transport in Porous Media [Точное решение задачи долговременной фильтрации суспензий и коллоидов в пористой среде с размерным захватом частиц]. Abstract and Applied Analysis, 2013, iss. "Mathematical and Computational Analyses of Flow and Transport Phenomena", 9 p. DOI: dx.doi.org/10. 1155/2013/680693.
13. You Z., Osipov Y., Bedrikovetsky P., Kuzmina L. Asymptotic model for deep bed filtration [Асимптотическая модель для фильтрации]. Chemical Engineering Journal, 2014, vol. 258, pp. 374-385.
14. Kuzmina L. I., Osipov Yu. V. Particle transportation at the filter inlet [Перемещение частиц на входе фильтра]. International Journal for Computational Civil and Structural Engineering, 2014, vol. 10, iss. 3, pp. 17-22.
15. Kuzmina L., Osipov Yu. Asymptotic solution for deep bed filtration with small deposit [Асимптотическое решение задачи фильтрации с маленьким осадком]. Procedia Engineering, 2015, vol. 111, pp. 491-494.
16. Kuzmina L. I., Osipov Yu.V. Asymptotics of the filtration equation. Vestnik MGSU, 2016, no. 2, pp. 49-61. (In Russian). - Building materials and products
- Increasing Efficiency of the Use of Rolled Metal Materials in Construction Industry
- UDC 621.777.01
Vitaly V. DEVYATOV, e-mail: witalijdewiatow3@gmail.com
National Research Moscow State University of Civil Engineering, Yaroslavskoe shosse, 26, Moscow 129337, Russian Federation
Abstract. Some ways to improve the efficiency of the use of rolled metal and quality of steel structures using the secondary methods of metal forming by the example of manufacturing elements of metal structures and without the use of welding are considered. It is proposed to produce long axis hollow cylinders with a bottom during one transition from a solid billet. The process of splicing fittings of periodic profile with crimping in the sleeve, in which the couplings are made of pieces of solid round bars with the help of the method of multi-directional combined extrusion of metal has been improved. The use of new methods will increase productivity, strength characteristics and quality of products due to elimination of welding operations, replace the expensive rolled tubular products used for jointing of reinforcement bars of periodic profile for a continuous rolling, the cost of which is two times lower. Besides, it is possible to produce lengthy couplings with cross-sections and holes of different diameters for connecting fittings during one operation. The use of couplings with optimized sizes makes it possible to reduce the metal consumption and crimping forces at maintaining the required strength characteristics of joints, significantly reduce the complexity of rod reinforcement assembling due to reducing the mass of cramping presses.
Key words: rolled metal, long-axis hollow cylinders, hydraulic cylinders, fittings of periodic profile, rolled tubular products, continuous rolling, couplings, secondary treatment of elements of metal structures under pressure, multidirectional extrusion, optimization. - REFERENCES
1. Madatyan S. A. Status and prospects of application of modern types of reinforcing bars. Chernaya metallurgiya, 2007, no. 6, pp. 13-18. (In Russian).
2. Rekomendatsii po mekhanicheskim soedineniyam armaturnoy stali dlya zhelezobetonnykh konstruktsiy [Recommendations for mechanical connection of reinforcing steel for concrete structures]. RA-10-1-04. Moscow, Assotsiatsiya "Zhelezobeton" Publ., 2004. 22 p. (In Russian).
3. Madatyan S. A., Dyachkov V. V. Study of threaded connections of the fittings in compressed concrete elements. Beton i zhelezobeton, 2007, no. 4, pp. 16-20. (In Russian).
4. Patent PL 345424. Method of extruding cylinders. Devyatov V. V., Rajthic J.
5. Patents PL 206468; 206467; 206466; 196924. Methods of extruding hollow cylinders. Devyatov V. V., Michalthic Y.
6. Vil'man Yu. A., Kagan P. B. SImproving the level of mechanization and automation technology installation. Estestvennye i tekhnicheskie nauki, 2014, no. 11-12, pp. 397-398. (In Russian).
7. Devyatov V. V. Improving the efficiency of the use of metal in the connection of rebar. Nauchnoe obozrenie, 2015, no. 19, pp. 131-135. (In Russian).
8. Devyatov V. V., D'yachkov V. V. Tendencies of development of ways of connection of rebar reinforced concrete structures. Nauchnoe obozrenie, 2016, no. 8, pp. 74-77. (In Russian).
9. Devjatov V. V., Michalczyk J. Teoreticzne podstawy i technologia procesow wyciskania. PL, Czenstochowa, 2011. 260 p. - Computer Modeling When Determining Elastic-Deformation Characteristics of High-Hollow Ceramic Wall Panels
- UDC 691.421-478
Anatoliy I. BEDOV, e-mail: gbk@mgsu.ru
National Research Moscow State University of Civil Engineering, Yaroslavskoe shosse, 26, Moscow 129337, Russian Federation
Askar M. GAISIN, e-mail: askargaisin@yandex.ru
Azat I. GABITOV, e-mail: azat7@ufanet.ru
Dmitriy V. KUZNETSOV, e-mail: alex.03@mail.ru
Aleksandr S. SALOV, e-mail: salov@list.ru
Elena M. ABDULATIPOVA
Ufa State Petroleum Technological University, ul. Mendeleeva, 195, Ufa 450000, Russian Federation
Abstract. In connection with the increase and expansion of the range of high-hollow ceramic wall and partition products manufactured at enterprises of the building industry of the Republic of Bashkortostan, the comparative evaluation of their construction and technological characteristics has been made. It is established that in the passports and certificates of conformity of these products there are no the values of main elastic-deformation characteristics, modulus of elasticity and Poisson's ratio, necessary for calculating and designing bearing walls of buildings with average number of storeys and high-rise buildings. The range of high-hollow ceramic products is considered. Simulation of power loading of high-hollow ceramic stones is performed in the program complex "SCAD", geometric parameters of the model of their destruction are obtained, results of the mechanical test of these ceramic products are also shown. Experimental studies show that the stress distribution in the computer model practically coincides with the real operation under the load and destruction of a high-hollow ceramic stone.
Key words: high-hollow ceramic products, thermal calculation, thermal resistance, stone buildings, energy efficiency, model, stress, strain, tests. - REFERENCES
1. Gorbunov G. I., Pronina T. N. Improving the efficiency of ceramic materials. Vestnik MGSU, 2009, no. 3, pp. 29-39. (In Russian).
2. Babkov V. V., Samofeev N., Kuznetsov D. V. State houses in silicate brick, and the program of rehabilitation of this category in the Republic of Bashkortostan. Stroitel'nye materialy, 2011, no. 11, pp. 7-11. (In Russian).
3. Gaisin A. M., Samochodova S. Y., Nedoseko I. V., Paimet'kina A. Y. Comparative evaluation of specific heat loss through the elements of exterior walls of residential buildings, defined by different methods. Zhilishchnoe stroitel'stvo, 2016, no. 5, pp. 36-40. (In Russian).
4. Gaisin A. M., Sharafutdinova M. V., Gabitov, A. I., Udalova, E. A. the history of energy efficiency of buildings as one of the directions of scientific-technical progress in construction. Istoriya nauki i tekhniki, 2014, no. 10, pp. 21-28. (In Russian).
5. Bedov A. I., Babkov V. V., Gabitov A. I., Sakhibgareev R. R., Salov A. S. Monolithic construction in the Republic of Bashkortostan: from theory to practice. Vestnik MGSU, 2013, no. 10, pp. 110-121. (In Russian).
6. Nedoseko I. V. Babkov V. V., Aliev R. R., Kuzmin V. V. Application of structural insulating concrete in low-rise construction. Zhilishchnoe stroitel'stvo, 2008, no. 3, pp. 26-27. (In Russian).
7. Sokolov B. S. Physical failure model of masonry under compression. Izvestiya vuzov. Stroitel'stvo, 2002, no. 9, pp. 4-9. (In Russian).
8. Rombach G. A. Finite element design of concrete structures: Practical problems and their solutions. London, Thomas Telford Publishing, 2004. 300 p.
9. Pangaev V. V., Albaut G. N., Fedorov A. V., Tabanukhova M. V. Model study of stress - strain state of masonry under compression. Izvestiya vuzov. Stroitel'stvo, 2003, no. 2, pp. 24-29. (In Russian).
10. Gorshkov A., Vatin N., Nemova D., Tarasova D. Definition of the overturning and holding moments for floor-by-floor leaning walls made from aerated concrete blocks. Applied Mechanics and Materials, 2014, vol. 633-634, pp. 897-903.
11. Reddy J. N. An Introduction to nonlinear finite element analysis. Oxford,Oxford University Press, 2004. 488 p.
12. Andreeva J. V., Zakharova, A. I. Porous ceramics with a regular structure. Uspekhi v khimii i khimicheskoy tekhnologii, 2012, vol. XXVI, no. 6(135), pp.11-13. (In Russian).
13. Bedov A. I., Babkov V. V.,Gabitov A. I., Sakhibgareev R. R., Salov A. S. Study of properties of modified concrete with chemical additives. Beton i zhelezobeton - vzglyad v budushchee [Concrete and reinforced concrete - glance at future]. Nauchnye trudy III Vserossiyskoy konferentsii po betonu i zhelezobetonu, 2014. Pp. 14-25. (In Russian).
14. Babkov V. V., Aminov Sh. Kh., Strugovets I. B., Nedoseko I. V., Mokhov, V. N., Distanov R. Sh. Steel fiber reinforced concrete construction in the road construction of the Republic of Bashkortostan. Stroitel'nye materialy, 2005, no. 3, pp. 50-53. (In Russian).
15. Mirsaev R. N., Akhmadullina I. I. Babkov V. V., Nedoseko I. V., Gaitova A. R., Kuzmin V. V. Slag composition of industrial wastes in construction techniques. Stroitel'nye materialy, 2010, no. 7, pp. 4-6. (In Russian). - About Possible Quantum Nature of Deformation and Fracture of Composites
- UDC 691.32
Vladimir I. TRAVUSH, e-mail: travush@mail.ru
Russian Academy of Architecture and Construction Sciences, ul. Bol'shaya Dmitrovka, 24, Moscow 107031, Russian Federation
Vladimir P. SELYAEV, e-mail: ntorm80@mail.ru
Pavel V. SELYAEV, e-mail: selyaevpv@gmail.com
Eugene L. KECHUTKINA, e-mail: ntorm80@mail.ru
National Reasearch Mordovia State Univesity, ul. Bolshevistskaya, 68, Saransk 430005, Russian Federation
Abstract. The purpose of the study is a substantiation of the possibility of the quantum nature of the deformation and fracture of composites under the effect of static load. The results of current research indicate that the composite materials are complex hierarchically organized scale-invariant systems that at each scale level can be represented by two generic components - a matrix and filler. The fractal models of destruction of cement composites under the effect compressive and tensile forces with due regard for heterogeneity and scale invariance of the structure of the material structure are considered. The dependence of the concrete compressive strength on defect sizes (cracks) in the matrix; the value of friction coefficient; fractal dimension and decrease in the scale level of the structure is established. It is theoretically shown that as a result of increasing the fractal dimension and decreasing the scale level, the strength increases, the mechanism of destruction of cement composites under the effect of compressive loads is determined by the action of not only normal tensile stresses, but and shearing stresses. The relationship between the strength of concrete under compression and tension is analytically established.
Key words: deformation, fracture, fractal model, fractal dimension, matrix, coefficient of friction, composite materials. - REFERENCES
1. Barenblatt G. I., Cherepanov G. P. The effect of body borders on the development of brittle cracks. Izvestiya AN SSSR. Otdelenie tekhnicheskikh nauk. Mekhanika i mashinostroenie, 1960, no. 3. Pp. 12-42. (In Russian).
2. Panasyuk V. V., Andreykov A. E., Kovchik S. E. Metody otsenki treshchinostoykosti konstruktsionnykh materialov [Methods of assessing the fracture toughness of structural materials]. Kiev, Naukova dumka Publ., 1977. 277 p. (In Russian).
3. Parton V. Z., Morozov E. M. Mekhanika uprugo-plasticheskogo razrusheniya [The mechanics of elastic-plastic fracture]. Moscow, Nauka Publ., 1974. 416 p. (In Russian).
4. Feder E. Fraktaly [Fractals]. Moscow, Mir Publ., 1991. 254 p. (In Russian).
5. Ivanova V. S., Shanyavskiy A. A. Kolichestvennaya fraktografiya. Ustalostnoe razrushenie [Quantitative fractography. Fatigue failure]. Chelyabinsk, Metallurgiya Publ., 1988. 400 p. (In Russian).
6. Selyaev V. P., Selyaev P. V., Kechutkina E. L. Basics fractal mechanics of concrete deterioration. Fracture mechanics of materials and structures. Proceedings of VIII Academic readings RAACS. International scientific and technical conference. Kazan', KGASU Publ., 2014. Pp. 289-298. (In Russian).
7. Novozhilov V. V. About necessary and sufficient criteria for brittle strength. Prikladnaya matematika i mekhanika, 1969, vol. 33, iss. 2, pp. 212-222. (In Russian).
8. Novozhilov V. V. For the basics of the theory of equilibrium cracks. Prikladnaya matematika i mekhanika, 1969, vol. 33, iss. 5, pp. 797-812. (In Russian).
9. Mandelbrot B. B. The fractal geometry of nature. New York, Freeman Publ., 1983. 480 p.
10. Solomatov V. I., Vyrovoy V. N., Selyaev V. P. Polistrukturnaya teoriya kompozitsionnykh stroitel'nykh materialov [Polystructural theory of composite building materials]. Tashkent, FAN Publ., 1991. 345 p. (In Russian).
11. Selyaev V. P., Selyaev P. V. Evolution and challenges of technology, reliability and creating products based on cement composites. Materialy Rossiysko-kitayskogo foruma inzhenernykh tekhnologiy (8-16 okt. 2015, PRC, Hangzhou). Proc. of the Russian-Chinese forum of engineering technologies. 8-16 Oct. 2015]. Pp. 185- 195. (In Russian).
12. Skorobogatov S. M. Katastrofy i zhivuchest' zhelezobetonnykh sooruzheniy (klassifikatsiya i elementy teorii) [Accidents and vitality of reinforced concrete structures (classification and elements of the theory)]. Ekaterinburg, Ur GUPS Publ., 2009. 512 p. (In Russian).
13. Zaytsev Yu. M. Modelirovanie deformatsii i prochnosti betona metodami mekhaniki razrusheniya [Modelling of deformation and strength of concrete methods of fracture mechanics]. Moscow, Stroyizdat Publ., 1982. 196 p. (In Russian).
14. Chernyshev E. M., D'yachenko E. I., Makeev A. I. Neodnorodnost' struktury i soprotivlenie razrusheniyu konglomeratnykh stroitel'nykh kompozitov [The heterogeneity of the structure and fracture resistance of composites construction conglomerate]. Voronezh, Voronezhskiy GASU Publ., 2012. 98 p. (In Russian).
15. Selyaev V. P., Solomatov V. I., Oshkina L. M. Khimicheskoe soprotivlenie napolnennykh tsementnykh kompozitov [The chemical resistance of cement-filled composites]. Saransk, MRSU Publ., 2001. 152 p. (In Russian).
16. Kupriyashkina L. I. Napolnennye tsementnye kompozity [Stuffed cement composites]. Saransk, MRSU Publ., 2007. 180 p. (In Russian).
17. Selyaev V. P., Selyaev P. V., Sorokin E. V., Kolotushkin A. V., Kechutkina E. L. Influence of friction forces on the strength of concrete. Regional'naya arkhitektura i stroitel'stvo, 2012, no. 3, pp. 12-17. (In Russian).
18. Selyaev V. P., Selyaev P. V., Sorokin E. V., Kechutkina E. L. Predicting the durability of reinforced concrete bent elements by degradation functions. Zhilishchnoe stroitel'stvo, 2014, no. 12, pp. 8-19. (In Russian). - Modern Bearing Structures of Buildings Made of Fast Hardening Composite (Taumalit) on the Basis of Gypsum-Cement Binder
- UDC 666.914.4
Arkady V. GRANOVSKY, e-mail: arcgran@list.ru, Bulat K. DZHAMUEV, e-mail: dbk-07@mail.ru
TSNIISK named after V. A. Kucherenko, OJSC SRC "Stroitelstvo", 2-ya Institutskaya ul., 6, Moscow 109428, Russian Federation
Artem V. LYSKOV, e-mail: lyskovart@yandex.ru, Mikhail V. POPOV, e-mail: taumalit@yandex.ru
SATURN-R, ul. Kuybysheva, 37, Perm' 614000, Russian Federation
Abstract. The efficiency of the use of gypsum concrete on the basis of taumalit for manufacturing bearing and enclosing wall structures is analyzed. High ecological, thermal, and physical-mechanical indicators of the wall material on the basis of taumalit as well as its advantages over cement materials and cellular concrete are pointed out. Experimental studies of the strength and deformability of bearing taumalit wall sandwich panels manufactured at the concrete prefabrication factory of OOO "Saturn-R" (Perm), on compression of the bearing layer and shear of the facing layer relatively to the inner layer of the panel, .have been conducted. Data on the rigidity of connections of the shear of panel layers in the form of vertical and horizontal ribs of 40-60 mm thickness have been obtained. The comparative analysis of the results of tests of panel with flexible metal connections made it possible to reveal the high level of reliability of connections of panel layers at shearing developed by specialists of OOO "Saturn-R". On the basis of test results, it is established that the wall panels made of taumalit meet the requirements of normative document to the heavy concrete structures used, when erecting residential and public buildings.
Key words: bearing structures, gypsum-cement binder, three-layer panels, rigidity of connections, taumalit. - REFERENCES
1. Vincent L. C. Wasser die gehaimisvoll Energie. IRISIANA Verlag, 1956. 63 p.
2. Pustovgar A. P. Experience of application of gypsum binders in the construction of buildings. Stroitelnye materialy, 2008, no. 3, pp. 81-84. (In Russian).
3. Volzhenskiy A. V., Stambulko V. I., Ferronskaya A. V. Gipsotsementnoputstsolanovye vyazhushchie, betony i izdeliya [Gipsotsementnyj binders, concretes and products]. Moscow, Stroyizdat Publ., 1971. 318 p. (In Russian).
4. Ferronskaya A. V., Korovyakov V. F. Lightweight concrete on composite gypsum-containing binders. Materialy 1-y Vserossiyskoy konferentsii po problemam betona i zhelezobetona [Materials of the 1st all-Russian conference on concrete and reinforced concrete]. Moscow, 2001. Pp. 21-24. (In Russian).
5. Korovyakov V. F., Sergeev V. K. New technologies in the production of wall products from water-resistant gypsum concrete. II Vserossiyskiy seminar s mezhdunarodnym uchastiem "Povyshenie effektivnosti proizvodstva i primeneniya gipsovykh materialov i izdeliy" ["Improving the efficiency of production and use of gypsum materials and products"]. Moscow, LM-PRINT Publ., 2004. 106 p. (In Russian).
6. Alksnis F. F. Tverdenie i destruktsiya gipsotsementnykh i kompozitsionnykh materialov [The hardening and destruction of gypsum cement gypsum and composite materials]. Leningrad, Stroyizdat Publ., 1988. 103 p. (In Russian).
7. Batalin B. S. New material for construction. Zhilishchnoe stroitel'stvo, 2014, no. 10, pp. 1-3. (In Russian).
8. Murashev V. I., Sigalov E. N., Baykov V. N. Zhelezobetonnye konstruktsii [Reinforced concrete structures]. Moscow, Gosstroyizdat Publ., 1962. 659 p. (In Russian).
9. Posobie po raschetu krupnopanel'nykh zdaniy [Manual calculation of large-panel buildings]. Iss. 1. Kharakteristiki zhestkosti sten, elementov i soedineniy krupnopanel'nykh zdaniy [Characteristics of rigidity of the walls, elements and joints of large-panel buildings]. Moscow, Stroyizdat Publ., 1976. 40 p. (In Russian).
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