摘要
明挖车站常采用地连墙作为基坑支护形式。地连墙可以是与车站侧墙(衬墙)之间有连接的叠合墙,也可以是无连接的复合墙。使用阶段,叠合墙与衬墙共同受力,主体结构计算分析时要考虑其影响。复合墙与衬墙之间通常设置防水层,主体结构计算是否需要考虑其作用?有无复合墙对主体结构哪些方面分别有多大影响?为研究此问题,本文以某地下二层单柱双跨矩形框架车站为例,对比分析车站主体结构在多荷载工况下,有无围护墙参与时的内力变化情况;采用反应位移法,对比分析车站在地震作用下,有无围护墙参与时的不同响应特征。根据分析结果并结合工程经验,提出车站结构在设计时的注意事项,为后续同类工程设计提供参考。
Retaining wall is frequently used as foundation pit retaining system in subway station projects. It works as compound wall or as composite wall. The calculation of the main structure should take compound wall into account as they are integrated by connectors in using stage. The composite wall and the chemise are close to each other but not connected. Whether need to take into account or not when calculating the main structure？ What is the influence of the composite wall on the main structure？ In order to study this problem, a two story underground station with single column- double span rectangular frame is taken as an example. The analysis and comparison of the internal forces changes of the station structure under multiple loading cases are carried out. The different response characteristics of the station under seismic loading are analyzed using response displacement method. Design considerations are presented according to the result and the engineering experience, the reference is provided for similar structure design
作者
王姝
Wang Shu(China Railway Shanghai Design Institute Group Co. Ltd, Shanghai 200092, Chin)
出处
《工程抗震与加固改造》
北大核心
2017年第4期107-111,共5页
Earthquake Resistant Engineering and Retrofitting
关键词
地铁车站
围护墙
结构计算
抗震分析
反应位移法
metro station
retaining wall
structural calculation
seismic analysis
response displacement method
