地铁隧道暗挖下穿玻璃幕墙建筑物稳定性分析  

Stability Analysis on Subway Tunnel Concealed Excavation Through Glass Curtain Wall Buildings

作　　者：王立新[1,2] 王强 施王帅胤 窦磊明 江腾飞 汪珂 邱军领[4] 杨桃 WANG Lixin;WANG Qiang;SHI-WANG Shuaiyin;DOU Leiming;JIANG Tengfei;WANG Ke;QIU Junling;YANG Tao(China Railway First Survey and Design Institute Group Co.,Ltd.,Xi’an 710043,Shaanxi,China;School of Civil Engineering and Architecture,Xi’an University of Technology,Xi’an 710048,Shaanxi,China;Earthquake Agency of Inner Mongolia Autonomous Region,Hohhot 010010,Inner Mongolia,China;School of Highway,Chang’an University,Xi’an 710064,Shaanxi,China;Sichuan Dujin Mountain Rail Transit Co.,Ltd.,Chengdu 611830,Sichuan,China;Sichuan Shudao New System Rail Group Co.,Ltd.,Chengdu 610023,Sichuan,China)

机构地区：[1]中铁第一勘察设计院集团有限公司,陕西西安710043 [2]西安理工大学土木建筑工程学院,陕西西安710048 [3]内蒙古自治区地震局,内蒙古呼和浩特010010 [4]长安大学公路学院,陕西西安710064 [5]四川都金山地轨道交通有限责任公司,四川成都611830 [6]四川蜀道新制式轨道集团有限责任公司,四川成都610023

出　　处：《济南大学学报（自然科学版）》2023年第6期711-719,共9页Journal of University of Jinan(Science and Technology)

基　　金：国家自然科学基金项目(52078421);陕西省高层次人才特殊支持计划青年拔尖人才项目(陕组通字[2018]33号);中铁第一勘察设计院集团有限公司科研项目(院科19-75-01)。

摘　　要：为了考察饱和黄土地层暗挖地铁隧道下穿玻璃幕墙建筑物时建筑物及玻璃幕墙的稳定性特征,利用有限元软件MIDAS GTS NX对西安某地铁隧道暗挖下穿玻璃幕墙建筑物进行数值模拟分析,并对比采取注浆加固与未采取注浆加固工况时有限元分析结果与现场实测数据。结果表明:周围土体的沉降主要集中在隧道附近,在地表形成沉降槽;玻璃幕墙的沉降主要在开挖过程中形成,约占总体沉降的95%;未采取注浆加固时地表及建筑物的最大沉降达到79.74 mm,而采取注浆加固后最大整体沉降为13.75 mm,通过全断面注浆和合理的施工工序可以使沉降有效减少82.76%;选取的测点实测平均沉降为13.57 mm,有限元分析中对应测点的平均沉降为10.94 mm,二者误差为2.63 mm,数值模拟与实际工况基本吻合。To investigate stability characteristics of buildings and glass curtain walls when a subway tunnel in saturated loess strata concealed excavation through glass curtain wall buildings,numerical simulation analyses were carried out on a subway tunnel concealed excavation through glass curtain wall buildings in Xi’an city by using finite element software MIDAS GTS NX.Finite element analysis results and field measured data at grouting reinforcement and non-grouting reinforcement working conditions were compared.The results show that the settlement of surrounding soil mass is mainly concentrated near the tunnel,forming a settlement trough on the surface.The settlement of glass curtain walls is mainly formed during the excavation process,accounting for about 95%of the overall settlement.The maximum settlement of surface and buildings reaches 79.74 mm without taking grouting reinforcement,while the maximum overall settlement after taking grouting reinforcement is 13.75 mm,and 82.76%of the settlement can be effectively reduced through full section grouting and reasonable construction procedures.The measured average settlement at selected measurement points is 13.57 mm and the average settlement at corresponding measurement points in finite element analysis is 10.94 mm,with an error of 2.63 mm.The numerical simulation is basically consistent with the actual working conditions.

关 键 词：隧道工程 有限元分析 数值模拟 玻璃幕墙 注浆加固 

分 类 号：U121[交通运输工程] U45[建筑科学—桥梁与隧道工程]