摘要
北京地铁五号线崇文门站下穿既有地铁一号线区间隧道,车站顶板与区间隧道底板间距2.858 m,施工中为了严格控制既有环线区间隧道的沉降,确保环线地铁运营安全,首次采用了管幕预支护技术。文章采用3D-S igm a三维有限元软件对施工效应进行模拟分析,预测车站施工引起的既有隧道的沉降量,以确定合理的管幕预支护参数及其作用效果。
Chongwenmen Station on line No. 5 of Beijing subway traverses beneath the existing transit tunnel of line No. 1 of Beijing subway. The distance between the roof of the station and the bottom plate of the transit tunnel is 2. 858 m. In order to control the subsidence of the transit tunnel and guarantee the safety of operation strictly, pipe curtain is used as fore - poling for the first time. In order to confirm the rational parameters and the effect of pipe curtain fore -poling, three -dimensional finite element software, 3D -Sigma, is used to simulate and analyze the construction effect. In addition, the subsidence of the transit tunnel due to the construction of the station is predicted.
出处
《现代隧道技术》
EI
北大核心
2006年第4期12-15,共4页
Modern Tunnelling Technology
关键词
地铁车站
立体交叉
管幕预支护
施工效应
三维有限元
Subway station
Cross -over
Pipe curtain fore -poling
Construction effect
Three -dimensional finite element
