既有地铁影响区前大直径盾构试验段监测研究  

Study on Monitoring of Large Diameter Shield Test Site in Front of theInfluenced Zone of Existing Subway

作　　者：朱建才[1,4] 徐敏 孙樵[1,4] 沈华骏 李东泰[3] Zhu Jiancai;Xu Min;Sun Qiao;Shen Huajun;Li Dongtai(Center for Balance Architecture,Zhejiang University,Hangzhou 310012,China;Hangzhou Survey Design&Research Institute Co.,Ltd,Hangzhou 310027,China;China Railway Tunnel Stock Co.Ltd,Zhengzhou 450001,China;Architectural Design and Research Institute of Zhejiang University,Hangzhou 310012,China)

机构地区：[1]浙江大学平衡建筑研究中心,杭州310012 [2]杭州市勘测设计研究院有限公司,杭州310027 [3]中铁隧道股份有限公司,郑州450001 [4]浙江大学建筑设计研究院有限公司,杭州310012

出　　处：《科技通报》2022年第9期91-95,共5页Bulletin of Science and Technology

基　　金：浙江大学平衡建筑研究中心配套资金资助-K横(20203389C);中铁隧道股份有限公司科研课题。

摘　　要：通过杭州某工程大直径盾构下穿既有地铁影响区前试验段现场实测研究,得出大直径盾构隧道穿越复合地层时周围土体超静孔隙水压力产生和消散的规律,以及相应的分层沉降及地表沉降数值;从而判断在城市繁华地段及复合地层条件下盾构近距离下穿既有地铁的风险及可行性,对类似下穿既有地铁工程具有实际指导意义。Based on the field test of a large-diameter shield tunnel in front of the influenced zone of existing subway in Hangzhou,the laws of the formation and dissipation of excess pore water pressure in the surrounding soil and the value of settlement are obtained,when the large-diameter shield tunnel passes through the composite strata,in order to judge the risk and feasibility of the next shield tunneling under the existing subway at a short distance under the conditions of busy urban areas and composite strata,it has guiding significance for similar subway projects.

关 键 词：大直径盾构 试验段 分层沉降 超静孔隙水压力 下穿既有地铁 

分 类 号：U455.45[建筑科学—桥梁与隧道工程]