Analysis of bearing capacity of subsoil under flexible and rigid shallow foundations

MA Shao-kun; HUANG Mao-song; LIU Yi-lin

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Analysis of bearing capacity of subsoil under flexible and rigid shallow foundations

更新时间：2026-06-25

- Analysis of bearing capacity of subsoil under flexible and rigid shallow foundations
- Vol. 29, Issue 12, (2008)
- 作者机构：
  
  1. 同济大学岩土及地下工程教育部重点试验室,上海,200092
  2. 广西大学资源与环境学院,南宁,530004
  3. 交通部公路科学研究所,北京,100088
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU470
- Online First：11 August 2013，
  
  Published：2008
- 稿件说明：
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MA Shao-kun, HUANG Mao-song, LIU Yi-lin. Analysis of bearing capacity of subsoil under flexible and rigid shallow foundations[J]. 2008, 29(12).
DOI：

MA Shao-kun, HUANG Mao-song, LIU Yi-lin. Analysis of bearing capacity of subsoil under flexible and rigid shallow foundations[J]. 2008, 29(12). DOI：

摘要

为了研究刚性和柔性加载面下地基的破坏机制和极限承载力，着重对比分析了不考虑土体自重条件下柔性基础、基底完全光滑或完全粗糙的刚性基础的地基，采用关联流动的Mohr-Coulomb内切圆屈服准则，通过增量加载的有限元方法，全程模拟了地基由初始的线弹性状态逐渐过渡到塑性流动的极限破坏状态的过程。通过对这3种基础类型下地基的计算结果的对比分析，并结合国内外模型试验成果，得到如下结论：柔性和刚性浅基础地基在不考虑土体自重的条件下有相近的地基极限承载力，但基底水平面上竖向应力和位移的发展规律、临塑荷载及滑动面有着明显的区别。

Abstract

In order to study the failure mechanism and ultimate bearing capacity of weightless subsoil under rigid and flexible foundations

comparative studies are conducted for flexible foundation

rigid rough foundation and rigid smooth foundation in the case that the effect of soil dead-weight was negligible. Mohr-Coulomb inside-tangent circle yield criterion under associated flow rule was adopted. The ultimate failure state of subsoil from linear elasticity to plasticity gradually was modeled by incremental elastoplastic FEM. Some conclusions are drawn from computational results of three kinds of foundations mentioned above and model test results in the literature. It is shown that the weightless subsoil under rigid and flexible foundations have similar ultimate bearing capacity; while development trends of vertical stress and displacement

critical edge pressures and slip surfaces are obviously different.

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