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


  • BASES AND FOUNDATIONS, UNDERGROUND STRUCTURES
  • Estimation Of The Compressible Thickness Of The Foundations In Numerical Modeling
    (In The Order Of Discussion)
  • UDC: 624.159.2
    doi: 10.33622/0869-7019.2024.08.65-70
    Igor K. FOMENKO1, ifolga@gmail.com
    Oleg V. ZERKAL2, igzov@mail.ru
    Andrey A. GORLOV1, andrey.gor10@yandex.ru
    Igor V. AVERIN3, i.averin@mail.ru
    Daria D. SHUBINA1, ddshubina@gmail.com
    1 Sergo Ordzhonikidze Russian State University for Geological Prospecting, ul. Miklukho-Maklaya, 23, Moscow 117997, Russian Federation
    2 Lomonosov Moscow State University, Leninskie gory, 1, Moscow 119991, Russian Federation
    3 Enginernaya Geologiya, ul. Yartsevskaya, 16, Moscow 121552, Russian Federation
    Abstract. The calculation of the bases for the second group of limit states is mandatory when designing objects. In practice, the calculation of foundation sediments is performed based on the model of a linearly deformable half-space according to the scheme of a linearly deformable layer. One of the problematic areas of this technique is the increase in the precipitation of the base with an increase in the considered depth of the soil mass. To obtain the values of the precipitation of buildings, an empirical parameter is used here - the depth of the compressible thickness of the base (calculated area). According to the norms, deformations of the soil column below this zone can be neglected. The effectiveness of numerical modeling depends on the correctness of the assignment of boundary conditions, in particular, the size of the computational domain. It is shown that determining the size of this area based on calculating the depth of the compressible thickness using an empirical method is not correct enough. The values of the zone of characteristic inflection of the graph of the influence of the depth of the calculated area on the amount of precipitation are revealed. When assigning a design area less than the specified range, the value of the foundation precipitation will be underestimated. In the future, clarifications are required in the regulatory documents regulating the calculation of building sediments and imposing requirements for engineering surveys representing the initial data for such calculations.
    Keywords: depth of compressible thickness of the base, sedimentation of building foundations, calculation of bases by deformations, estimated area, numerical modeling, vertical stresses
  • REFERENCES
    1. Kurguzov K. V., Dejneko A. V., Fomenko I. K. The choice of the considered depth of non-rock foundations for engineering and geological testing and calculations of deformations. New ideas and theoretical aspects of engineering geology. Collection International Scientific Conference (Moscow, February 4, 2021). Moscow, Sam Poligrafist Publ., 2021, pp. 146-151. (In Russ.).
    2. Fedorovskij V. G., Bezvolev S. G. Forecast of precipitation of shallow foundations and selection of the base model for the calculation of slabs. Osnovaniya, fundamenty i mekhanika gruntov, 2000, no. 4, pp. 10-18. (In Russ.).
    3. Shvec V. B., Kul'chitskij G. B. Experimental studies of the depth of the compressible thickness of the base under the sole of stamps. Osnovaniya, fundamenty i mekhanika gruntov, 1970, no. 1, pp. 4. (In Russ.).
    4. Dimov L. A., Dimov I. L., Bogushevskaya E. M. Draft and roll of a large oil tank during hydraulic testing. Osnovaniya, fundamenty i mekhanika gruntov, 2017, no. 3, pp. 31-35. (In Russ.). doi: 10.1007/s11204-017-9457-1
    5. Pantelidis L. Strain influence factor charts for settlement evaluation of spread foundations based on the stressstrain method [Диаграммы коэффициента влияния деформаций для оценки осадки фундаментов на основе метода напряженно-деформированного состояния]. Applied Sciences, 2020, no. 10(11), pp. 3822. doi: 10.3390/app10113822
    6. Schmertmann J. H. Static cone to compute static settlement over sand [Статический конус для расчета статической осадки песка]. Journal of the Geotechnical Engineering Division, ASCE, 1970, no. 96(3), pp. 1011-1043.
    7. Schmertmann J. H., Hartman J. P., Brown P. R. Improved strain influence factor diagrams [Улучшенные диаграммы коэффициентов влияния деформации]. Journal of the Geotechnical Engineering Division, ASCE, 1978, no. 104(8), pp. 1131-1135.
    8. Terzaghi К., Peck R. B., Mesri G. Soil mechanics in engineering practice [Механика грунтов в инженерной практике]. John Wiley& Sons,1996. 592 p.
    9. Braja D., Nagaratnam S. Settlements of shallow foundations on granular soil - an overview [Устройство фундаментов мелкого заложения на сыпучем грунте - обзор]. International Journal of Geotechnical Engineering, 2007, no. 1, pp. 19-29. doi: 10.3328/IJGE.2007.01.01.19-29
  • For citation: Fomenko I. K., Zerkal O. V., Gorlov A. A., Averin I. V., Shubina D. D. Estimation of the Compressible Thickness of the Foundations in Numerical Modeling (In the Order of Discussion). Promyshlennoe i grazhdanskoe stroitel'stvo [Industrial and Civil Engineering], 2024, no. 8, pp. 65-70. (In Russ.). doi: 10.33622/0869-7019.2024.08.65-70

BACK