地铁盾构施工对上部建筑物影响的参数敏感性分析  

Parameter Sensitivity Analysis of Impact of the Shield Construction on Superstructure

作　　者：李隆海 Li Longhai(China railway 19th bureau group Co.,Ltd.,Ningbo 315499,China)

机构地区：[1]中铁十九局集团华东工程有限公司,浙江宁波315499

出　　处：《市政技术》2022年第9期132-136,共5页Journal of Municipal Technology

摘　　要：为研究地铁盾构施工对上部建筑物的影响,以某地铁盾构施工项目为工程背景,基于Midas GTS建立盾构地铁-土层-上部建筑物的三维仿真整体分析模型,并在该基础上,选取盾构施工的管片厚度、强度和掘进压力为基本因素,设计正交试验分析了地铁盾构施工影响上部建筑物的参数敏感性。结果表明,上部建筑物变形对盾构施工的掘进压力最为敏感。然后结合计算分析结果,总结了地铁盾构施工过程中引起建筑物变形、沉降的主要原因,并基于此给出了盾构施工中上部建筑物变形控制的合理措施。In order to study the impact of subway shield construction on superstructure,taken a subway project as the engineering background,a overall 3D simulation analysis model of shield subway soil superstructure is established based on Midas GTS.The segment thickness,strength and tunneling pressure of shield construction are selected as the basic factors,and the orthogonal test is designed to analyze the parameter sensitivity of subway shield construction affecting the superstructure.The results show that the superstructure deformation is the most sensitive to the tunneling pressure.Further,combined with the calculation and analysis results,several major causes of building deformation and settlement are summarized and reasonable measures for controlling deformation of superstructure are given in shield construction.

关 键 词：盾构施工 三维仿真模型 正交试验 参数敏感性 变形控制 

分 类 号：U231.3[交通运输工程—道路与铁道工程]