水泥土挡墙稳定安全系数与变形的经验关系分析  

Statistical Analysis on Relationship between the Stable Safety Coefficient and Displacement for Cement-soil Retaining Wall

作　　者：黄广龙[1] 李勇[1] 徐敏[1] 夏佳[1] 

机构地区：[1]南京工业大学土木工程学院,南京210009

出　　处：《工程勘察》2008年第3期23-26,48,共5页Geotechnical Investigation & Surveying

摘　　要：水泥土重力式挡土结构是软土地区基坑支护常用方法之一,其设计主要以稳定性控制为主,挡墙变形预测和控制较为困难。实践经验表明,水泥土挡墙的稳定性安全系数与挡墙变形之间存在一定的关联性。本文采用统计方法通过工程实例分析了水泥土重力式挡墙变形与基坑整体稳定性、抗隆起稳定性、抗滑移稳定性、抗倾覆稳定性之间的关系,从变形控制的角度提出了水泥土挡墙各项稳定性安全系数取值标准并与现行规范的要求进行了比较,可供类似工程设计参考。Cement-soil retaing wall is a kind of retaining structure which is often used in soft soil area. The main factor in the design of this kind structure is to control the stability of the structure, but it is difficult to predict and control the displacement of the retaining wall accurately. The practical experience shows that there is the relationship between the displacement and the stability factors of the cement-soil gravity retaining wall. The relations between the displacement and the stability factors such as the integral stability, resisting upheaval stability, resisting slippage stability and resisting overturn stability are analyzed by the statistics through the project examples. The standard values of each stability factor under the displacement control of the cement-soil retaining wall are proposed, which could provide the design reference for the similar projects.

关 键 词：水泥土重力式挡墙 稳定性 变形控制 稳定性安全系数 

分 类 号：TU432[建筑科学—岩土工程]