局部渗漏水对盾构隧道既有裂缝受力影响分析  

Analysis of Effect on Existing Crack in Subway Tunnel Bring by Local Leakage

作　　者：孙衍 黄宏伟[2] 薛亚东[2] SUN Yan;HUANG Hongwei;XUE Yadong(Shanghai Huangpu Jiangyuejiang Investment Construction Development Co.,Ltd.,Shanghai 200092,China;School of Civil Engineering,Tongji University,Shanghai 200092,China)

机构地区：[1]上海黄浦江越江设施投资建设发展有限公司,上海200092 [2]同济大学土木工程学院,上海200092

出　　处：《交通科技》2024年第5期149-153,共5页Transportation Science & Technology

摘　　要：随着我国城市盾构隧道运营里程与服役年限的增加,许多隧道结构内部出现了以裂缝和渗漏水为代表的各种病害。为确保隧道运营安全,综合考虑多病害耦合作用,文中以裂缝与渗漏水病害为研究对象,采用数值分析手段研究局部渗漏水对带裂缝盾构隧道的影响。研究局部渗漏水引起既有裂缝隧道受力状态变化机理,以及不同渗漏量、渗漏位置及渗漏时间等因素下渗漏水对既有裂缝演化影响,得到不同因素对裂尖应力增长影响规律。研究总结了隧道局部渗漏引起既有裂缝演化规律,为既有盾构隧道运营养护管理提供有效依据。With the increase of operating mileage and service life of urban shield tunnels in China,various defects represented by crack and leakage have appeared in many tunnel structures.In order to ensure the safety of tunnel operation and comprehensively consider the coupling effect of multi-defects,taking cracks and leakage water diseases as the research object,the numerical analysis was used to study the influence of local leakage on shield tunnel with cracks.Firstly,the mechanism of stress state change of cracked tunnel caused by local leakage was discussed,and the influence of water leakage on the evolution of existing crack under different factors such as different amount of leakage,leakage location and leakage time was further analyzed.Finally,the law of the influence on the stress growth of crack tip by different leakage factors was obtained.The research results summarize the evolution law of existing crack caused by local leakage of the tunnel,which provides an effective basis for the operation,maintenance and management of the shield tunnel.

关 键 词：盾构隧道 局部渗漏水 裂缝 

分 类 号：U457[建筑科学—桥梁与隧道工程]