水下大直径盾构隧道结构变形及养护措施  

Deformation and Maintenance Measures of Underwater Large Diameter Shield Tunnel

作　　者：王燕平 张忠宇 张小兵 陈喜坤 WANG Yanping;ZHANG Zhongyu;ZHANG Xiaobing;CHEN Xikun(Jiangsu Province Yangzhou Tunnel Management Office,Yangzhou 225002,China;JSTI Group Co.,Ltd.,Nanjing 210019,China)

机构地区：[1]江苏省扬州市隧道管理处,扬州225002 [2]苏交科集团股份有限公司,南京210019

出　　处：《现代交通技术》2020年第4期53-58,69,共7页Modern Transportation Technology

摘　　要：近年来,进入运营阶段的大直径水下盾构隧道越来越多,这些隧道在运营过程中逐渐出现渗漏水、错台、接缝张开等病害,分析结构变形趋势及养护措施至关重要。研究以扬州瘦西湖盾构隧道为例,通过为期一年的全线拱顶沉降、道面沉降、周边收敛的测量及病害的检查,给出了隧道内结构变形较大的位置和变形量,统计了隧道内病害的检查及养护情况,并以此为基础,编制出《瘦西湖隧道养护指导手册》,为保障隧道安全运营提供规范性的养护措施及合理建议。In recent years,large-diameter underwater shield tunnels have increasingly entered the operation phase.During operation stage,diseases began to emerge in these tunnels,such as leakage,staggered platform,joint opening,etc.How to analyze the trend of structural deformation and carry out maintenance measures has become an inevitable problem.Taking the Slender West Lake Tunnel at Yangzhou as example,paper presents the large structural deformation in the tunnel by analysis on one-year measurement of vault settlement,pavement settlement,peripheral convergence and disease inspection.On this basis,the Maintenance Guide for the Slender West Lake Tunnel is compiled.The normative maintenance measures are provided for the tunnel security operation.

关 键 词：运营期 水下盾构隧道 隧道病害 结构变形 养护措施 

分 类 号：U457.2[建筑科学—桥梁与隧道工程]