天津建设科技2023，Vol.33Issue(6)：5-8,30,5.DOI:10.3969/j.issn.1008-3197.2023.06.002
软土地区互通立交跨越运营地铁隧道设计分析
Design Analysis of Interchange Crossing Operation Subway in Soft Soil Area
李木松 1商敏1
作者信息
- 1. 天津市政工程设计研究总院有限公司,天津 300392
- 折叠
摘要
Abstract
In view of the construction difficulty in urban interchange bridges crossing existing operational subway,taking actual project as an example,this paper uses a three-dimensional numerical simulation method to analyze dif-ferent bridge crossing designs,the impact of bridge construction on subway shield tunnel.Through analysis of the dynamic monitoring data of shield deformation,the construction stage of the upper structure has the great-est impact on the existing subway shield,and the shield tunnel deformation is inversely proportional to the net distance between the piles and directly proportional to the load size.At the same time,the paper puts forward optimization suggestions such as using small-span bridges structure and reducing the structural self-weight,using small-diameter piles,strengthening monitoring,and using pile-end grouting to control pile settlement.关键词
软土地区/桥梁/桩基/地铁/盾构隧道/互通立交Key words
soft soil area/bridge/pile foundation/subway/shield tunnel/interchange分类
交通工程引用本文复制引用
李木松,商敏..软土地区互通立交跨越运营地铁隧道设计分析[J].天津建设科技,2023,33(6):5-8,30,5.
