地面堆载对临近既有盾构隧道影响的研究综述

摘要

随着我国城市建成和运营的地铁盾构隧道越来越多,地铁沿线突发堆土(地面堆载)现象也越来越频繁.地面堆载会导致下方土体产生附加沉降,使临近既有地铁隧道产生相应的附加变形和受力,严重威胁到隧道结构及地铁运营安全.根据现有研究成果,将地面堆载对临近隧道影响的研究方法归纳为:现场实测法、理论分析法、数值模拟法和模型试验法.对发展概况及研究进展进行综述,提出需进一步研究的课题和研究思路.%As the quantity of urban subway shield tunnels which is in construction and operation is becoming bigger in china,the phenomenon that there's piles of soil (ground load) along the subway is more and more frequent.The ground load will lead to additional subsidence of the soils under bit,so that the adjacent subway shield tunnels produce corresponding additional deformation and stress,which is a serious threat to the tunnel structure and subway operation.Based on the existing research,the research methods of the impact of ground load on adjacent tunnels are summarized as follows:field measurement method,theoretical analysis,numerical simulation and model test methods.The paper summarizes the development overview and research progress,and put forward the need for further study of the subject and research ideas.