局部剪切破坏模式下的无重地基承载力

发布时间：2018-06-22 11:09

本文选题：地基承载力 + 局部剪切破坏　；参考：《岩土力学》2014年01期

【摘要】：局部剪切破坏是一种常见的地基破坏模式,该破坏模式下的地基承载力理论计算方法尚不完善,对无重地基局部剪切破坏的极限承载力理论进行了研究。首先从破坏时破裂面延伸位置的角度完善了浅基础3种破坏模式的划分标准。对于局部剪切破坏,土体强度并未完全发挥出来,潜在破坏区处于非极限状态,所以将土体强度逐渐发挥的概念引入地基承载力中,通过适当的假设,建立了局部剪切破坏模式下无重介质地基承载力的理论计算方法,并与已有的经典成果进行比较分析,印证了该方法的合理性。研究成果为解决局部剪切破坏模式下地基承载力的计算提供了理论参考。
[Abstract]:Local shear failure is a common failure mode of foundation. The theoretical calculation method of foundation bearing capacity under this failure mode is not perfect. The ultimate bearing capacity theory of local shear failure of non-heavy foundation is studied in this paper. At first, the classification criteria of three kinds of failure modes of shallow foundation are improved from the point of view of the extension position of fracture surface during failure. For local shear failure, the strength of soil is not fully played out, and the potential failure zone is in a non-limit state, so the concept of gradually exerting the strength of soil is introduced into the bearing capacity of the foundation. The theoretical calculation method of the bearing capacity of the foundation without heavy medium under the local shear failure mode is established, and compared with the classical results, the rationality of the method is verified. The research results provide a theoretical reference for the calculation of the bearing capacity of the foundation under the local shear failure mode.
【作者单位】：合肥工业大学土木与水利工程学院;
【基金】：国家自然基金资助项目(No.51078123,No.51179043) 教育部博士点基金资助项目(No.200901111110014)
【分类号】：TU470

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