Investigation on the Deformation Behavior of Multi-layered Soils Under a Large Foundation

doi:10.12068/j.issn.1005-3026.2019.12.020

Abstract

Abstract: The deformation calculation model called SSBS (simulating subsidence of building subsoil) for multi-layered soils under a large foundation was established based on the soil deformation theory. The deformation of the multi-layered soils of a real project was calculated and compared with the monitored values. It is found that the effective stress increment can be formed in soils above the foundation base due to dewatering， which cannot be neglected. Because of the non-uniform distribution of the subsidiary stress in subsoil under large foundation， the locations of the maximum loading point and the maximum deformation point are not coincident， which means that the maximum deformation does not occur at the center of the foundation. The results show that the deformation calculated by the established model is closer to the field minoring results， thus can be a reference for the deformation analysis for multi-layered subsoil under large foundation.

Key words: unsaturated soils, multi-layered soils, deformation, effective stress increment, effective subsidiary stress

CLC Number:

TU740

XIU Zhan-guo， LI Chun， WANG Fei-li， QI Jia. Investigation on the Deformation Behavior of Multi-layered Soils Under a Large Foundation[J]. Journal of Northeastern University Natural Science, 2019, 40(12): 1779-1783.

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