南京地铁车站深基坑变形规律分析  

Analysis of Deformation Law of Deep FoundationPit of Nanjing Subway Station

作　　者：夏百惠 葛以衡[2,3] 周游 蒋刚 荣雪宁 Xia Baihui;Ge Yiheng;Zhou You;Jiang Gang;Rong Xuening(College of Transportation Science and Engineering,Nanjing Tech University,Nanjing 210009,China;Shanghai Tunnel Engineering Co.,Ltd.,Shanghai 200032,China;Shanghai Engineering Research Center of Urban Infrastructure Renewal,Shanghai 200032,China)

机构地区：[1]南京工业大学交通运输工程学院,南京210009 [2]上海隧道工程股份有限公司,上海200032 [3]上海城市基础设施更新工程技术研究中心,上海200032 [4]上海隧道工程有限公司,上海200032

出　　处：《黑龙江科学》2025年第8期6-9,共4页Heilongjiang Science

摘　　要：以南京某地铁车站基坑开挖为背景,根据施工条件和场地周边环境的工程特点,采用现场监测与有限元数值模拟相结合方法,分析围护结构、地表沉降和基坑隆起这三个方面基坑土体的变形特征,并与实测数据进行比较。研究结果表明,围护结构水平位移最大值约为18.9 mm,位于2/3 H处,其模拟值与实测数据大小较为符合,满足规范标准。地表沉降最大值约为13 mm,位于0.6 H处,模拟值比实测值小,可能与有限元数值模拟未考虑现场大型车辆与机械所带来的临时荷载。在考察的三种位移形式中,围护结构水平位移、地表沉降的三维效应比较显著,基坑底部隆起的三维效应则不明显。Taking the excavation of the foundation pit at Nanjing Shanxi Road Metro Station as the background,according to the construction conditions and the engineering characteristics of the surrounding environment of the site,the deformation characteristics of foundation pit soil in three aspects:enclosure structure,surface settlement and foundation pit uplift,are analyzed and compared with the measured data.The results show that the maximum horizontal displacement of the enclosure structure is about 18.9 mm,located at 2/3 H and its simulated value is more consistent with the measured data size and meets the specification standards.The maximum surface settlement is about 13 mm,and it is located at 0.6 H.The simulated value is smaller than the measured value,which may be related to the finite element numerical simulation without considering the temporary load caused by large vehicles and machinery on the site.Among the 3 displacement forms under investigation,the three-dimensional effect of horizontal displacement and ground settlement of the envelope structure is more significant,while the three-dimensional effect of uplift at the foundation pit bottom is not.

关 键 词：地铁车站 基坑开挖 数值模拟 变形特征 

分 类 号：U231.3[交通运输工程—道路与铁道工程]