双螺旋盾构连续穿越古建筑群沉降控制探索与应用

EXPLORATION AND APPLICATION OF SETTLEMENT CONTROL OF DOUBLE HELICAL SHIELD TUNNEL CONTINUOUSLY CROSSING ANCIENT BUILDINGS

以哈尔滨地铁2号线一期工程人民广场站~博物馆站5个盾构区间连续穿越古建筑群工程为背景,依托双螺旋盾构机防喷涌特性,通过自动化监测、三维有限元整体分析法等手段,有效抑制周边建筑物和地表沉降,在保证施工质量的基础上解决了地铁盾构区间在繁华城市应用中施工安全风险高、建筑物沉降控制难等问题,达到了快速安全通过的目的,有利于城市地下空间施工技术的开发和应用推广。

Based on the background of five shield tunneling sections from Renmin Square Station to Museum Station in the first phase of Harbin Metro Line 2,relying on the anti-gushing characteristics of double helix shield machine,the surrounding buildings and ground subsidence are effectively restrained by means of automatic monitoring and three-dimensional finite element integral analysis,and the construction quality is guaranteed.On this basis,the problems of high construction safety risk and difficult settlement control of buildings in the application of metro shield tunneling in busy cities are solved.The purpose of rapid and safe passage is achieved,which is conducive to the development and application of urban underground space construction technology.