城市建成区密贴既有线深大基坑施工周边环境变形控制被引量：2

Control of the Surrounding Environmental Deformation of the Deep Large Foundation Pit Construction Close to the Exiting Line in Urban Built-up Area

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摘要随着城市地铁建设的发展,在城市建成区采用十字换乘的密贴既有线建设方案逐渐增多。面对乘客及运营管理单位对运营质量的高标准要求,如何在新建车站顺利建设的同时高标准实现周边环境的变形控制,也成为城市轨道交通发展必须要面对的问题。依托北京地铁13号线扩能提升工程中密贴既有地铁车站新建某十字换乘明挖车站工程,从基坑围护结构和支护结构的设计与施工角度,指出该工程依照既有类似工程案例提出的初始方案存在的问题,而后结合该工程的特点总结凝练优化后实际采用的方案,通过方案优化前后的对比,结合数值模拟、建设过程中现场实际监测数据等证明优化后的方案切实可行,并在既有车站等周边环境变形控制方面取得了良好效果,对类似城市建成区密贴既有线深大基坑施工具有一定的实际参考价值。 With the development of urban subway construction,the utilization of construction schemes of cross-transfer close to existing subway station is progressively increasing in urban built areas.Because of the high stan-dards of operational quality of the passengers and operational management units,how to well control deformation of the surrounding environment during the smooth construction of new stations has become an issue that urban rail transit development must confront.Based on new cross-transfer open-cut station close to an existing subway station of the capacity expansion and upgrading project of Beijing metro line 13,the problems of the initial proposed scheme was presents according to the existing similar projects from the aspects of the foundation pit surrounding structure and supporting structure.Based on the project characteristics,the optimized schemes were summarized.Through comparison of schemes before and after optimization,combined with numerical simulation and the actual monitoring data during construction,it is proved that the optimized scheme was feasible and achieved favorable results in con-trolling deformations of surrounding environments at the existing station.It provides practical reference value for constructing deep large foundation pits close to existing lines in similar urban built-up areas.

作者王俊高琨冀大亨刘佳杰 Wang Jun;Gao Kun;Ji Daheng;Liu Jiajie(Beijing Urban Construction Group Co.,Ltd.,Beijing 100067,China;Beijing Municipal Road and Bridge Group Co.,Ltd.,Beijing 100045,China)

机构地区北京城乡建设集团有限责任公司北京市政路桥股份有限公司

出处《市政技术》 2024年第5期104-114,共11页 Journal of Municipal Technology

关键词十字换乘密贴既有车站明挖基坑变形控制 cross-transfer close to the existing stations open-cut foundation pit deformation control

分类号 TU473.2 [建筑科学—结构工程] U231.4 [交通运输工程—道路与铁道工程]

作者简介王俊,男,工程师,学士,主要从事项目管理及施工技术等工作。;通讯作者:刘佳杰,男,高级工程师、知识产权师,硕士,主要从事施工技术、项目管理及科技创新等工作。;高琨,男,高级工程师,学士,主要从事施工技术及项目管理等工作。;冀大亨,男,工程师,学士,主要从事施工技术、项目管理及科技创新等工作。