深基坑施工失稳破坏数值模拟分析  

NUMERICAL SI MULATION ANALYSIS IN INSTABILITY AND FAILURE OF DEEP FOUNDATION PIT CONSTRUCTION

作　　者：陈炳志[1] 王天天[2] 

机构地区：[1]山东科技大学审计处,山东泰安271019 [2]山东科技大学土木工程与建筑学院,山东青岛266510

出　　处：《建筑技术开发》2015年第5期57-61,共5页Building Technology Development

摘　　要：通过采用数值模拟的方法对影响深基坑失稳的因素进行分析,得出以下结论:粘聚力与失稳范围呈反比,当粘聚力降低时,深基坑失稳面积由小变大,伴随滑动面越来越陡,失稳范围也变大;深基坑失稳受抗拉强度的影响相比较小;外载与失稳程度呈正比关系,外载越大,其安全系数越小,深基坑失稳发生率相应增加。By adopting the method of numerical simulation of the effect factors of deep foundation pit instability analysis, the following conclusions： cohesive force is inversely proportional with instability of range, when reduce the cohesive force, deep foundation pit instability area changed from small to big, with sliding surface is more and more steep, instability of scope is bigger; deep foundation pit instability under the influence of tensile strength compared to smaller;outer loads and buckling degree was positively than relationship, the greater the load, the safety coefficient is smaller, the incidence of deep foundation pit instability increases accordingly.

关 键 词：深基坑 失稳破坏 数值模拟 影响因素 

分 类 号：TU311[建筑科学—结构工程]