深基坑开挖及渗流对邻近隧道的影响分析  

Analysis of the influence of deep foundation pit excavation and seepage on adjacent tunnel

作　　者：刘飞飞 汪亦显[1] 李凯 李娴[1] 张伟[1] LIU Feifei;WANG Yixian;LI Kai;LI Xian;ZHANG Wei(School of Civil Engineering,Hefei University of Technology,Anhui Hefei,230009,China;Hefei Rail Transit Group Co.Ltd.,Anhui Hefei,230009,China)

机构地区：[1]合肥工业大学土木与水利工程学院,安徽合肥230009 [2]合肥城市轨道交通有限公司,安徽合肥230009

出　　处：《河北工程大学学报（自然科学版）》2018年第4期55-59,69,共6页Journal of Hebei University of Engineering:Natural Science Edition

基　　金：国家自然科学基金资助项目(51774107);合肥市重点工程建设局科技支撑项目(2013CGAZ0771);安徽省住房城乡建设厅科学技术计划项目(2013YF-27)

摘　　要：为明确基坑开挖过程中邻近隧道的力学响应特征,利用有限元数值模拟软件,对隧道管片的变形和内力进行分析,通过控制开挖过程中水头和水压力的变化,分析基坑开挖过程中地下水渗流对邻近隧道的影响。结果表明:基坑开挖会导致邻近隧道的变形和内力变化,考虑地下水渗流作用时隧道的变形和内力会显著增加,并且随着基坑开挖深度的增加,隧道管片的变形和内力也随之增大。In order to clarify the mechanical response characteristics of adjacent tunnels during excavation,the deformation and internal force of tunnel segments were analyzed by finite element numerical simulation software.The influence of groundwater seepage on adjacent tunnels during excavation was analyzed by controlling the change of water head and pressure during excavation.The results show that the excavation of foundation pit will lead to the deformation and internal force changes of adjacent tunnels.The deformation and internal force of the tunnel will increase significantly when the seepage of groundwater is considered.This study can provide a reference for evaluating the safety of adjacent tunnels and the design and construction of related projects.

关 键 词：基坑开挖 邻近隧道 渗流 数值分析 

分 类 号：TU47[建筑科学—结构工程]