基于超固结比与变形的基坑被动区土压力计算  

Calculation of Passive Earth Pressure in Retaining Structure on the Ratio and Displacement of Overconsolidation

作　　者：汪中卫[1] 刘国彬[1] 

机构地区：[1]同济大学地下建筑与工程系,上海200092

出　　处：《建筑结构》2005年第9期88-91,共4页Building Structure

基　　金：国家自然科学基金资助项目(10102015);上海市重点学科建设项目资助。

摘　　要：通过对挡土结构被动区土压力计算方法与模式的分析,指出现行计算方法存在的局限性与不合理性。根据基坑开挖工程的特点,考虑了基坑被动区土体在超固结状态下K0值的计算方法,并在此基础上提出了考虑土体卸荷的变形模量的土压力与变形的计算关系式,并通过工程实例对本方法进行了对比分析。The existing localization and illogicality of the present calculation method and model of passive earth pressure used in retaining structure are pointed out. On the basis of the calculation method of static earth pressure considering overconsolidation,a new method considering the relation of the earth pressure and displacement by the unloading deformation modulus is put forward. The corresponding calculation result is constrasted with the data of field monitoring,and they are identical.

关 键 词：被动土压力 卸荷模量 超固结 位移 深基坑 土压力计算 变形模量 被动区 基坑 超固结比 

分 类 号：TU433[建筑科学—岩土工程] TV223[建筑科学—土工工程]