摘要
为研究北京地区砂卵石地层大断面暗挖区间下穿施工对京沪高铁北京特大桥的影响,以北京市新机场线草桥站站后折返线大断面暗挖区间隧道工程为背景,对下穿京沪高铁北京特大桥段区间暗挖隧道进行设计,并用Midas/GTS软件进行有限元分析,研究大断面暗挖区间下穿京沪高铁北京特大桥施工过程中桥面、桥墩、承台及桥桩位移变化规律特征,得出大断面暗挖区间侧穿桥桩施工过程中桥桩附加应力变化规律,以及大断面暗挖区间下穿京沪高铁特大桥施工过程中承台差异沉降及地层应力变化规律。
In order to study the influence of tunneling under crossing the large cross-section underground excavation section in sandy cobble stratum in Beijing on super-large bridge of Beijing-Shanghai High-speed Railway, the large underground excavation section of the tunnel at the Caoqiao Station in Beijing New Airport Line is taken as the engineering background, the underground excavation tunnel passing through super-large bridge of Beijing-Shanghai High-speed Railway is designed. Midas/ GTS software is applied to make finite element analysis of displacement variation laws of bridge deck, pier, cap and pile during the construction. The variation laws of the additional stress of bridge pile, the differential settlement and the variation laws of formation stress of bridge cap during the construction at the large underground excavation section are obtained.
作者
易领兵
刘鹏
杜明芳
吕高乐
王喜梅
刘胜欢
郑威锋
李帅兵
吕兆龙
YI Lingbing;LIU Peng;DU Mingfang;LYU Gaole;WANG Ximei;LIU Shenghuan;ZHENG Weifeng;LI Shuaibing;LYU Zhaolong(CCCC Railway Consultants Group Co.,Ltd.,Beijing 100000,China;Shanghai City Railway Construction Technology Co.,Ltd.,Shanghai 200000,China;College of Civil Engineering and Architecture,Henan University of Technology,Zhengzhou 450000,Henan,China;Zhengzhou Metro Co.,Ltd.,Zhengzhou 450000,Henan,China)
出处
《隧道建设（中英文）》
北大核心
2018年第A02期126-135,共10页
Tunnel Construction
关键词
大断面暗挖区间
京沪高铁北京特大桥
下穿施工
Midas/
GTS
位移
应力
large cross-section underground excavation section
super-large bridge of Beijing-Shanghai High-speed Railway
underpass construction
Midas/ GTS
displacement
stress
