盾构穿越既有地铁运营线控制措施与效果分析  

Control Measures and Effect Analysis of Shield Passing Through Existing Metro Operation Line

作　　者：程国良 刘宝林[2] 董勇[2] 陈健[2] CHENG Guoliang;LIU Baolin;DONG Yong;CHEN Jian(Wuhan Metro Group Co.,Ltd.,Wuhan,Hubei 430070,China;School of Ciwil Engineering and Mechanics,Huazhong University of Science and Technology,Wuhan,Hubei 430074,China)

机构地区：[1]武汉地铁集团有限公司,湖北武汉430070 [2]华中科技大学土木学院工程管理研究所,湖北武汉430074

出　　处：《施工技术》2021年第1期87-90,95,共5页Construction Technology

基　　金：国家自然科学基金(51608218);武汉地铁集团科研项目(GS-JZ-751,GS-JZ-508)。

摘　　要：根据某城市地铁施工实际情况,主要针对地铁盾构穿越既有地铁运营线时采取的控制措施以及采取控制措施后各项变形情况进行分析。隧道穿越既有线施工必然造成对既有结构的影响,严重时可能造成结构的破坏和部分使用功能丧失,甚至影响运营安全。减小对既有地铁运营线的影响主要在于施工中采取的各项控制措施,通过本区间穿越期间对沉降进行分析,虽然在盾构穿越期间造成地表、轨枕、道床沉降量较大,但通过各种控制措施合理施工,确保了穿越期间地铁既有线运营安全。According to the actual situation of subway construction in a certain city,this paper mainly focuses on the control measures taken when the subway shield crosses the existing subway operation line,and analyzes the deformation after taking control measures.Tunnels crossing existing lines will inevitably have an impact on existing structures.In severe cases,structural damage and loss of some functions may be caused,and even operational safety may be affected.In order to reduce the impact on the existing subway operation line mainly depends on various control measures taken during the construction,this paper analyzes the settlement during the crossing period of this section,although the settlement of the surface,sleeper and track bed is large during the tunnel crossing period.However, reasonable construction through various control measures ensures the safety of the existing subway operation during the crossing.

关 键 词：隧道 盾构 既有地铁线 控制措施 监测 

分 类 号：U455.43[建筑科学—桥梁与隧道工程]