AbstractAbout AuthorsReferences
The article presents the formulation and solution of a problem devoted to the quantitative assessment of the precipitation of a weak base under a sand cushion containing a foundation of finite width. The stress-strain state (SSS) of a weak base layer under the influence of a distributed load p=const over the band b=2a (flat problem) is considered. Nonlinear models, including the elastic-plastic model, are considered as a computational model for describing volume and shear deformations. To describe the relationship between stresses and deformations, a system of Hencky equations is used, which makes it possible to take into account the influence of the average stress σ=(σ1+σ2+σ3)/3 on the deformation properties of soils. It is shown that the sediment and lateral movements of the base can have a non-linear character and can pass to a non-damping stage at τ→τ*. The problem is solved analytically and numerically using the Mathcad PC. The graphic part contains ε-σ and τi-γi dependencies in accordance with the selected models, as well as a graphical representation of the development of the relative deformation of a weak base under the foundation of finite width, the development of precipitation is a weak base layer under the foundation of finite width and calculation of the settlement of the foundation of finite width by the method of layer-by-layer summation.
V.I. DEMIANENKO, Master (This email address is being protected from spambots. You need JavaScript enabled to view it.);
Z.G. TER-MARTIROSYAN, Doctor of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.);
A.Z. TER-MARTIROSYAN, Doctor of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.)
Z.G. TER-MARTIROSYAN, Doctor of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.);
A.Z. TER-MARTIROSYAN, Doctor of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.)
Moscow State University of Civil Engineering (National Research University) (26, Yaroslavskoye Highway , Moscow, 129337, Russian Federation)
1. Ter-Martirosyan Z.G., Sidorov V.V., Ter-Martirosyan A.Z., Manukyan A.V. Extrude a weak layer from the base of the final width foundation. Zhilishchnoe Stroitel’stvo [Housing Construction]. 2016. No. 9, pp. 5–10. (In Russian).
2. Ter-Martirosyan A.Z., Ter-Martirosyan Z.G., Sidorov V.V. Interaction of final stiffness soil piles with surrounding soil as part of foundation taking into account expansion of pile diameter. Osnovaniya, fundamenty i mekhanika gruntov. 2016. No. 3, pp. 10–15. (In Russian).
3. Pudova V.G., Kamenskaya M.V. Study of the stress condition in the soil cushion under the foundation of the multi-storey building and determination of its economic efficiency. Matrica nauchnogo poznaniya. 2018. No. 1, pp. 5–11. (In Russian).
4. Vyskrebencev V.S. On application of soil cushions on weak soils of the bases of engineering structures. Vestnik Belgorodskogo gosudarstvennogo tekhnologicheskogo universiteta im. V.G. Shuhova. 2015. No. 5, pp. 16–20. (In Russian).
5. Mangushev R.A., Usmanov R.A. Ways to improve the effectiveness of compacted soil cushions on weak soils. Vestnik grazhdanskih inzhenerov. 2019. No. 2 (73), pp. 62–70. (In Russian).
DOI: 10.23968/1999-5571-2019-16-2-62-70
6. Alekhin A.N., Alekhin A.A. Effective method of determining parameters of a nonlinear soil model from field tests. Vestnik PNIPU. Stroitel’stvo i arhitektura. 2017. Vol. 8. No. 4, pp. 54–63. (In Russian). DOI: 10.15593/2224-9826/2017.4.06
7. Buslov A.S., Bakholdin B.V., Stavnitzer L.R. Soil creep equations based on probabilistic rheological model. Osnovaniya, fundamenty i mekhanika gruntov. 2017. No. 1, pp. 2–8. (In Russian).
8. Kiselev N.YU. Experimental study of the work of a slab foundation with a damping layer on a soil base. Geotekhnika. 2016. No. 1, pp. 51–60. (In Russian).
9 Ter-Martirosyan Z.G., Ter-Martirosyan A.Z. Experimentally – theoretical foundations of transformation of weak water-saturated clay soils at surface and deep compaction. Inzhenernaya geologiya. 2015. No. 4, pp. 16–25. (In Russian).
10. Ter-Martirosjan Z.G., Ter-Martirosjan A.Z., Sidorov V.V. Initial critical pressure under the heel of the round foundation and bored piles under the heel of round section. Estestvennye i tehnicheskie nauki. 2014. No. 11–12 (78), pp. 372–376. (In Russian).
2. Ter-Martirosyan A.Z., Ter-Martirosyan Z.G., Sidorov V.V. Interaction of final stiffness soil piles with surrounding soil as part of foundation taking into account expansion of pile diameter. Osnovaniya, fundamenty i mekhanika gruntov. 2016. No. 3, pp. 10–15. (In Russian).
3. Pudova V.G., Kamenskaya M.V. Study of the stress condition in the soil cushion under the foundation of the multi-storey building and determination of its economic efficiency. Matrica nauchnogo poznaniya. 2018. No. 1, pp. 5–11. (In Russian).
4. Vyskrebencev V.S. On application of soil cushions on weak soils of the bases of engineering structures. Vestnik Belgorodskogo gosudarstvennogo tekhnologicheskogo universiteta im. V.G. Shuhova. 2015. No. 5, pp. 16–20. (In Russian).
5. Mangushev R.A., Usmanov R.A. Ways to improve the effectiveness of compacted soil cushions on weak soils. Vestnik grazhdanskih inzhenerov. 2019. No. 2 (73), pp. 62–70. (In Russian).
DOI: 10.23968/1999-5571-2019-16-2-62-70
6. Alekhin A.N., Alekhin A.A. Effective method of determining parameters of a nonlinear soil model from field tests. Vestnik PNIPU. Stroitel’stvo i arhitektura. 2017. Vol. 8. No. 4, pp. 54–63. (In Russian). DOI: 10.15593/2224-9826/2017.4.06
7. Buslov A.S., Bakholdin B.V., Stavnitzer L.R. Soil creep equations based on probabilistic rheological model. Osnovaniya, fundamenty i mekhanika gruntov. 2017. No. 1, pp. 2–8. (In Russian).
8. Kiselev N.YU. Experimental study of the work of a slab foundation with a damping layer on a soil base. Geotekhnika. 2016. No. 1, pp. 51–60. (In Russian).
9 Ter-Martirosyan Z.G., Ter-Martirosyan A.Z. Experimentally – theoretical foundations of transformation of weak water-saturated clay soils at surface and deep compaction. Inzhenernaya geologiya. 2015. No. 4, pp. 16–25. (In Russian).
10. Ter-Martirosjan Z.G., Ter-Martirosjan A.Z., Sidorov V.V. Initial critical pressure under the heel of the round foundation and bored piles under the heel of round section. Estestvennye i tehnicheskie nauki. 2014. No. 11–12 (78), pp. 372–376. (In Russian).
For citation: Demianenko V.I., Ter-Martirosyan Z.G., Ter-Martirosyan A.Z. Sediment of a weak base under a sand cushion containing a foundation of finite width. Zhilishchnoe Stroitel’stvo [Housing Construction]. 2020. No. 9, pp. 20–26. (In Russian). DOI: https://doi.org/10.31659/0044-4472-2020-9-20-26