大埋深地铁车站洞桩法施工关键技术  

Key Construction Technology of Large Embedded Depth Subway Station with PBA Method

作　　者：徐凌[1] 汪玉华[2] 

机构地区：[1]北京市轨道交通建设管理有限公司,北京100037 [2]中铁隧道集团有限公司洛阳科学技术研究所,洛阳471009

出　　处：《施工技术》2015年第19期94-96,100,共4页Construction Technology

基　　金：北京市科技新星计划资助项目(Z121106002512086);科技北京百名领军人才培养工程资助项目(Z121106002612017);北京市国有资本经营预算项目"深层空间地铁工程建设科技创新团队"资助

摘　　要：洞桩法(PBA工法)是北京地铁应用较多的一种工法,具有对周边环境影响小、安全性高、适应性广等优点。但当埋深较大时,车站施工中受到承压水等不利条件影响。结合实际工程,对北京地铁6号线东四站施工过程中的成功经验进行了总结,详细介绍了工程施工中的重点、难点和施工关键技术,并对施工效果进行了分析。The PBA method is widely used in Beijing subway,which has the advantages of higher flexibility,wider adaptability,higher security and smaller impact on surrounding environment. However,the construction of subway station is difficult when the engineer was under the conditions of large embedded depth and affected by confined water. The construction technology of Beijing Metro line 6Dongsi Station was summarized in this paper. Difficulties and points in construction were introduced as well as key technologies,and the construction effect was analyzed.

关 键 词：地下工程 地铁 PBA工法 承压水 施工技术 

分 类 号：U231.4[交通运输工程—道路与铁道工程]