隧道衬砌病害对结构安全性影响机理研究  

Influence Mechanism on Structural Safety by Tunnel Liner Diseases

作　　者：杨朝帅 崔臻[4] 牛富生 王百泉 YANG Chaoshuai;CUI Zhen;NIU Fusheng;WANG Baiquan(China Railway Tunnel Group Co.,Ltd.,Guangzhou,Guangdong 511458,China;Guangdong Provincial Key Laboratory of Intelligent Monitoring and Maintenance of Tunnel Structure,Guangzhou,Guangdong 511458,China;China Railway Tunnel Consultants Co.,Ltd.,Guangzhou,Guangdong 511458,China;State Key Laboratory o Geomechanics and Geotechnical Engineering,Institute oo Rock and Soil Mechanics,Chinese Academy o Sciences,Wuhan,Hubei 430071,China)

机构地区：[1]中铁隧道局集团有限公司,广东广州511458 [2]广东省隧道结构智能监控与维护企业重点实验室,广东广州511458 [3]中铁隧道勘察设计研究院有限公司,广东广州511458 [4]中国科学院武汉岩土力学研究所岩土力学与工程国家重点实验室,湖北武汉430071

出　　处：《水利与建筑工程学报》2023年第4期180-186,共7页Journal of Water Resources and Architectural Engineering

基　　金：中国中铁股份有限公司科技研究开发计划“隧道结构病害智能识别与快速修复材料研究”(2021-专项-06);中铁隧道局集团科技创新计划“铁路隧道衬砌智能检测与应用研究”(隧研合2019-13)。

摘　　要：隧道在建设和运营过程中常遭受衬砌开裂、渗漏水以及背后空洞等多种衬砌病害,这些病害会对隧道的安全性造成不良影响。为评估隧道衬砌常见病害对隧道安全性的影响,研究建立了一种基于安全系数法的隧道安全量化方法,定量评价病害对隧道安全的影响,并通过数值模拟分析了不同病害类型、不同病害程度、不同病害分布下隧道的安全性。研究结果表明:衬砌开裂、衬砌渗漏水、衬砌背后空洞对隧道安全性有不利影响,主要表现为衬砌轴力、弯矩、剪力增加,安全系数下降;病害程度越高,安全系数下降越明显;衬砌病害出现在拱顶或仰拱时对隧道安全最不利。Tunnels are often subject to various lining defects,such as cracking,water leakage and voids behind the lining,during their construction and operation,which may have adverse effects on the safety of tunnels.To assess the impact of common lining defects on the safety of tunnels,a quantitative method for evaluating the safety of tunnels based on the safety factor method was established in this study.The impact of lining defects on tunnel safety was quantitatively evaluated,and the safety of tunnels under different types,degrees and distributions of lining defects was analyzed through numerical simulations.The research results showed that lining defects,such as cracking,water leakage and voids behind the lining,have adverse effects on the safety of tunnels,mainly manifested as an increase in axial force,bending moment,and shear force of the lining,which leads to a decrease in the safety factor.The higher the degree of the defect,the more significant its impact on the safety factor of the tunnel.Lining defects occurring at the top or invert of the tunnel arch have the most unfavorable impact on tunnel safety.

关 键 词：隧道 衬砌开裂 衬砌渗漏水 衬砌背后空洞 

分 类 号：U457.2[建筑科学—桥梁与隧道工程]