Published since 1923
DOI: 10.33622/0869-7019
Russian Science Citation Index (RSCI) на платформе Web of Science


  • BUILDING STRUCTURES, BUILDINGS AND FACILITIES
  • Crack Resistance of Heads of Reinforced Concrete Columns under Vertical Loading
  • UDC 624.044:539.383
    Georgy P. NIKITIN1,2, e-mail: g.nikitin@gap-rt.ru
    Vasilii D. SIMAKOV2,1, e-mail: VasiliiSimakov86@mail.ru
    1 Kazan Giproniiaviaprom, ul. Dementieva, 1, Kazan 420127, Russian Federation
    2 Kazan State University of Architecture and Engineering, ul. Zelenaya, 1, Kazan 420043, Russian Federation
    Abstract. A method of resting of roof and sub-truss structures on the reinforced concrete column through the aligning steel gasket, sizes of which are less than sizes of the cross-section of the head of the column itself, is widely used in construction. When examining the technical condition of frameworks with contact joints, vertical cracks in the heads of reinforced concrete columns are often observed. The column, while, for a long time can be under static load without destruction. It can't be possible to evaluate the operation suitability of the column as there are no standard methods for calculation of joints with cracks. In the norms it is indicated that the building structures must be calculated according to two groups of limiting states that causes contradictions. In addition, some scientists and authors of this article found that the formation of cracks in the head of the column is possible with loads less than its normative bearing capacity calculated according to the norm by calculation for local compression. Therefore, the development of the methodology for calculating the crack resistance of heads of reinforced concrete columns in the contact junctions is an actual task. The article provides a brief overview of the work done to develop a methodology for calculating the heads of reinforced concrete columns by the occurrence and opening of cracks under the vertical load action. The presented data can be used both when designing and when conducting the technical survey of building structures to assess the technical condition of the heads of reinforced concrete columns with the existing vertical cracks.
    Key words: crack resistance, technique, head of reinforced concrete column, contact junction, vertical load, appearance and opening of cracks.
  • REFERENCES
    1. Gabrusenko V. V. Avarii, defekty i usilenie zhelezobetonnykh i kamennykh konstruktsiy [Accidents, defects and enhancement of concrete and brick constructions]. Novosibirsk, Obshchestvo zhelezobetonshchikov Sibiri i Urala Publ., 2007. 62 p. (In Russian).
    2. Yahya N. A. Strategies for mitigation of the failure of concrete pedestals supporting bridge girder bearings. Queensland, Queensland University of technology Publ., 2017. Pp. 48-52.
    3. Report 820-D01700/13-NTiIR on the results of a survey of the technical condition of the bearing and enclosing structures of the building part no. 1 on the territory of the Federal State Unitary Enterprise "SPC Gazoturbostroenia "Salut ", Moscow], inv. № 4073-27. Kazan, Kazanskiy Giproniiaviprom Publ., 2013. Pp. 60-63. (In Russian).
    4. Gladyshev B. M. Calculation of concrete and reinforced concrete elements on the local compression. Stroitel'nye konstruktsii, 1968, no. 10, pp. 61-70. (In Russian).
    5. Zalesov A. S. Proektirovanie i raschet zhelezobetonnykh monolitnykh zdaniy [Design and calculation of reinforced concrete monolithic buildings]. Moscow, Tipografiya Voennogo Izdatel'stva Publ., 2010. Pp. 44-47, 85-103. (In Russian).
    6. Sokolov B. S. Teoriya silovogo soprotivleniya anizotropnykh materialov szhatiyu i ee prakticheskoe primenenie [The theory of the power of resistance the anisotropic material to compression and its practical application]. Moscow, ASV Publ., 2011. Pp. 16-26, 125-127. (In Russian).
    7. Simakov V. D., Nikitin G. P. Theoretical basis of resistance to cracking of concrete columns in the contact joints. Izvestiya KGASU, 2017, no. 2(40), pp.131-138. (In Russian).
    8. Sokolov B. S., Nikitin G. P. Prochnost' gorizontal'nykh stykov zhelezobetonnykh konstruktsiy [The strength of the horizontal joints of reinforced concrete structures]. Moscow, ASV Publ., 2010. 102 p. (In Russian).
    9. Karpenko N. I. Obshchie modeli mekhaniki zhelezobetona [General models of mechanics of reinforced concrete]. Moscow, Stroyizdat Publ., 1996. Pp. 16-20, 218. (In Russian).
    10. Nikitin G. P., Simakov V. D. Raschet kontaktnykh stykov kolonn po obrazovaniyu i raskrytiyu treshchin [Calculation of the columns in the horizontal contact joints under compression by the appearance and disclosure of cracks]. Sb. st. Mezhdunar. nauch. konf., posvyashchennoy 85-letiyu kafedry i 100-letiyu so dnya rozhdeniya N. N. Popova "Sovremennye problemy rascheta zhelezobetonnykh konstruktsiy zdaniy i sooruzheniy na avariynye vozdeystviya". Moscow, MGSU Publ., 2016. Pp. 290-296. (In Russian).
    11. Simakov V. D., Nikitin G. P. Komp'yuternoe modelirovanie ogolovka zhelezobetonnoy kolonny v PK "ANSYS" dlya rascheta po pervoy i vtoroy gruppam predel'nykh sostoyaniy [Computer modeling of the head of the reinforced concrete column in the PC "ANSYS" for calculation by the first and second groups of limiting states]. Metodicheskie ukazaniya po napravleniyu 08.04.01 Stroitel'stvo. Kazan, KGASU Publ., 2016. 27 p. (In Russian).
    12. Simakov V. D. Crack resistance in the contact joints of columns. Izvestiya KGASU, 2016, no. 4(38), pp. 248-254. (In Russian).
  • For citation: Nikitin G. P., Simakov V. D. Crack Resistance of Heads of Reinforced Concrete Columns under Vertical Loading. Promyshlennoe i grazhdanskoe stroitel'stvo [Industrial and Civil Engineering], 2017, no. 9, pp. 42-47. (In Russian).

BACK