地下工程逆筑法施工深基坑支护结构总量法与增量法的计算比较分析

Comparison of Total Volume and Incremental Calculation Methods of Retaining Structure of Top-down Deep Excavation

地下工程分阶段计算支护结构内力时,需要考虑各施工阶段间受力的继承性。结合上海轨道交通12号线漕宝路站工程,采用有限元分析,对车站标准段深基坑支护结构分别采用总量法及增量法进行计算、比较和分析,旨在为同类型工程的基坑支护结构设计分析提供借鉴和参考。

Loading succession shall be considered in staged-calculation of the stress of retaining structure of underground engineering. The Caobao Road Station of Shanghai Rail Transit Line 12 project was taken as an example. FEM analysis was made to the retaining structure of standard section of the deep station excavation by total volume and incremental methods. The calculation results were compared so as to provide reference for design and analysis of similar retaining structure of excavation pit.