摘要
北京地铁8号线二期南段工程位于中心城区,周边环境复杂,设计和施工难度大。结合地铁南段工程整体概况,分析工程特点和难点,分别介绍一些有代表性的关键工程(盾构近距下穿既有站、盾构长距离下穿民房区、叠落盾构始发接收及施工、暗挖横通道内盾构调头吊出等)以及工程所采取的设计方案、技术创新及相关技术措施。通过对南段工程特点、技术创新、建设经验等进行总结,为类似工程提供一定的参考和借鉴。
The Southern part section of Phase II Project of Line 8 of Beijing Metro,is located in central downtown area,has complicated surrounding environment and large design and construction difficulties. In this paper, the characteristics and difficulties of the project are analyzed.Key technologies,including shieldboring closely underneath existing Metro station, longistance shield boring underneath residual buildings,launching and receiving of shield machines of stacked tunnels, and Uturn and lifting of shield machine in mined cross gallery, as well as the designed program, technical innovations and technical countermeasures,are presented in detail. The paper can provide references for similar projects in the future.
出处
《隧道建设》
2013年第12期983-988,共6页
Tunnel Construction
关键词
北京地铁
明挖法
暗挖法
叠落盾构
洞内调头
超深基坑
Beijing Metro
cut and cover
mining method
risk source
stacked shield-bored tunnel
U-turn in tunnel
supper-deep foundation pit
