大曲率盾构隧道施工对邻近建筑物的影响研究  

Study on the Influence of Shield Tunnel Construction with Large Curvature on Adjacent Buildings

作　　者：安彬 贾宝宏 袁博 王冰涵 李立军[2] AN Bin;JIA Baohong;YUAN Bo;WANG Binghan;LI Lijun(Taiyuan Rail Transit Group Co.,Ltd.,Taiyuan 030032,China;Taiyuan University of Technology,Taiyuan 030024,China)

机构地区：[1]太原轨道交通集团有限公司,太原030032 [2]太原理工大学,太原030024

出　　处：《现代交通技术》2023年第1期44-49,64,共7页Modern Transportation Technology

摘　　要：太原地铁1号线与2号线联络段盾构区间内为小半径曲线隧道,隧道附近有重要建筑物,须对土层扰动进行严格控制。为保障建筑物的安全,在关键地区布置监测点对地表和建筑物进行监测,得出盾构掘进对周边地层变形的影响。采用FLAC3D软件对隧道盾构区间风险点进行数值模拟分析,将现场收集到的数据与模拟计算所得数据进行对比分析,分析土层在盾构掘进过程中的起伏变化规律,并确定风险易发阶段,为类似工程提供参考,以保证盾构过程中周边地区的安全与稳定。The shield section of the connecting section of Taiyuan Metro Line 1 and Line 2 is a small radius curve tunnel,and there are important buildings nearby,so the soil disturbance needs to be strictly controlled.In order to ensure the safety of buildings,monitoring points are arranged in key areas to monitor the surface and buildings,and the influence of shield tunneling on the surrounding stratum deformation is obtained.FLAC3D is used to conduct numerical simulation analysis on the risk points in the tunnel shield interval,compare and analyze the data collected on site with the data obtained from simulation calculation,analyze the fluctuation and change law of soil layer in the process of shield tunneling,and determine the risk prone stage.It provides a case reference for similar projects and ensure the safety and stability of the surrounding areas during the shield process.

关 键 词：盾构隧道 地表沉降 邻近建筑物 数值模拟 

分 类 号：U455.43[建筑科学—桥梁与隧道工程]