地铁车站近距离下穿既有车站变形控制研究  

Research on Deformation Control of Subway Station Crossing Underneath Adjacent Existing Station

作　　者：王松 杨建辉 黄明利[2] Wang Song;Yang Jianhui;Huang Mingli(First Department of Engineering,Beijing Municipal Construction Group Co.,Ltd.,Beijing 100176,China;School of Civil Engineering&Architecture,Beijing Jiaotong University,Beijing 100044,China)

机构地区：[1]北京市政建设集团有限责任公司第一工程处,北京100176 [2]北京交通大学土木建筑工程学院,北京100044

出　　处：《市政技术》2022年第5期73-76,195,共5页Journal of Municipal Technology

基　　金：国家自然科学基金项目(51878037)。

摘　　要：结合北京地铁17号线新建次渠站工程,基于数值模拟进行了变形缝预设与否对既有车站结构安全冗余度影响的研究。研究结果表明,变形缝的存在提高了车站抗损伤能力,有效地减小了车站底板、顶板永久性结构的应力水平,既有车站上浮允许变形量可达到9.98 mm,较规范规定的竖向位移值3 mm提高了3倍以上;当地质条件复杂、既有车站竖向变形无法控制在3 mm内时,在采取控制措施、调整地铁轨道结构、满足正常行车需求且不损伤混凝土永久结构条件下,可适当放宽既有车站变形控制标准。Combining with the new Ciqu station engineering,based on numerical simulation,the influence of that whether the deformation joints are preset or not on safety redundancy of the existing station structure is studied.The research shows that the existence of deformation joints improves the anti-damage ability of the station and effectively reduces the stress of the permanent structure of the floor and roof of the station.The allowable deformation can reach9.98 mm,which is more than three times higher than the standard control value of 3 mm;When the geological conditions are complex and the vertical deformation of existing stations can’t be controlled within 3 mm,the subway track structure is adjusted by the control measures to meet the normal driving requirements and the permanent concrete structure is ensured no damage,the deformation control standards can be appropriately relaxed.

关 键 词：地铁车站近距离下穿 既有车站 变形 安全冗余度 数值模拟 控制 

分 类 号：TU94[建筑科学—建筑技术科学] U231.4[交通运输工程—道路与铁道工程]