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收稿日期: 2018-11-20
修回日期: 2018-12-10
网络出版日期: 2019-01-30
Influences of Underground Excavation Section on Highspeed Railway Bridge: a Case Study of Beijing New Airport Line under Crossing Beijing Superlarge Bridge of BeijingShanghai Highspeed Railway
Received date: 2018-11-20
Revised date: 2018-12-10
Online published: 2019-01-30
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 . 暗挖区间下穿施工对高铁桥的影响分析——以北京新机场线区间下穿京沪高铁北京特大桥工程为例[J]. 隧道建设, 2018 , 38(S2) : 126 -135 . DOI: 10.3973/j.issn.2096-4498.2018.S2.018
In order to study the influence of tunneling under crossing the large crosssection underground excavation section in sandy cobble stratum in Beijing on superlarge bridge of BeijingShanghai Highspeed 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 superlarge bridge of BeijingShanghai Highspeed 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.
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