基于Terzaghi假定的基坑抗隆起稳定性计算方法研究  

A new method for analyzing stability of foundation pits against basal heave failure according to Terzaghi's supposition

作　　者：孙淑贤[1] 任凯风 王远林 

机构地区：[1]烟台大学土木工程学院,烟台264005 [2]内蒙古自治区赤峰地质矿产勘查开发院,赤峰024000 [3]山东省烟台市水利建筑勘察设计院,烟台264001

出　　处：《水文地质工程地质》2007年第6期63-66,共4页Hydrogeology & Engineering Geology

摘　　要：本文根据Terzaghi地基承载力理论,针对基坑隆起破坏时土体向基坑一侧滑移失稳的实际情况和地下水渗流对基坑稳定性影响,对Terzaghi法确定基坑抗隆起安全系数做了相应的改进,推导出新的计算抗隆起稳定安全系数方法。对影响基坑抗隆起稳定问题的因素进行了参数分析,并通过工程实例计算分析,证明新的计算方法提高了基坑抗隆起稳定设计的可靠性。According to Terzaghi＇ s theory of bearing capacity of foundation Terzaghi method for calculating, the safety factor against basal heave failure was improved and a new method considering that only a single-sided sliding surface existed in real cases of failure and that seepage of groundwater affected to the stability of foundation pit was suggested ~ Parametric analyses were conducted to comprehensively understand the problem of basal heave failure of foundation pits. The validity of the new method to improve stability of foundation pits against the basal heave failure was then demonstrated through comparative analyses of practical cases.

关 键 词：抗隆起稳定 单侧滑动 安全系数 参数分析 

分 类 号：TU433[建筑科学—岩土工程]