地铁车站基坑围护体与内部结构共同作用分析

The Mutual Fuction Between the Bracing System and the Internal Stucture of the Metro Station Pit

以上海地铁２号线龙东路车站为例，采用弹性杆系有限元法对支撑拆除后基坑围护体与车站内部结构的共同作用进行分析。对围护体与内部结构之间有间隙时和无间隙时的两种工况进行了比较。从内部结构的安全、可靠的角度考虑，无间隙施工要好于有间隙施工。

Based on the engineering practice of stations in Shanghai Metro Line 2, this paper analyses mutual function between the bracing system and internal structure after the removing of the bracing, and compares gap control with non - gap control about the mutual function between the bracing system and internal system and internal structure. From the angles of security and reliability of internal structure, the paper comes to the conclusion that gap control is superior to no-gap control.