窄长基坑隆起破坏模式及其稳定性分析  

The Failure Patterns and Stability Analysis of Basal Heave of Long Narrow Foundation Pits

作　　者：王成华[1] 张天宝[1] 

机构地区：[1]天津大学建筑工程学院,天津300072

出　　处：《科学技术与工程》2017年第8期276-281,共6页Science Technology and Engineering

基　　金：国家自然科学基金项目(51478313;50978182)资助

摘　　要：通过运用基于极限分析的Limit State:Geo软件及应力应变ABAQUS软件模拟基坑的破坏性状。对比分析两者的结果,假定窄长基坑的破坏模式,根据假定的基坑破坏模式计算匀质无支撑窄基坑的安全系数;并对新破坏模式的参数进行了分析。对某工程实例进行抗隆起安全系数计算;并与汪炳鉴-夏明耀曲线滑动法进行对比。通过初步工程应用对比分析,证明了所建议的破坏模式方法有可行性和工程实用意义。The failure behavior of long narrow foundation pit was studied by using Limit State： Geo based on limit analysis and ABAQUS. A new failure pattern was assumed by comparing their results for calculating the safety factor of homogeneous foundations without support against basal heave stability. The safety factor of the engineering project was calculating by Wang-Xia method and the failure pattern. And parametric analyses were conducted to the new failure pattern. The validity and significance of the new failure pattern of basal heave stability were then demonstrated analyses of practical cases.

关 键 词：窄长基坑 抗隆起稳定性 安全系数 破坏模式 

分 类 号：U416.1[交通运输工程—道路与铁道工程]