盾构近距离穿越既有地铁隧道变形控制措施研究  

STUDY ON DEFORMATION CONTROL MEASURES FOR EXISTING METRO TUNNELS THAT ARE CROSSED BY CLOSE SHIELD TUNNELS

作　　者：吴华君[1] 齐永洁 魏纲 WU Hua-jun;QI Yong-jie;WEI Gang(Yiwu Industrial&Commercial College,322000,Yiwu,Zhejiang,China;School of Civil Engineering and Architecture,Anhui University of Science and Technology,232001,Huainan,Anhui,China;Department of Civil Engineering,Zhejiang University City College,310015,Hangzhou,China)

机构地区：[1]义乌工商职业技术学院,浙江义乌322000 [2]安徽理工大学土木建筑学院,安徽淮南232001 [3]浙大城市学院土木工程系,杭州310015

出　　处：《建筑技术》2020年第8期916-920,共5页Architecture Technology

基　　金：浙江省公益技术应用研究计划项目(LGF19E080002)。

摘　　要：盾构近距离穿越既有地铁隧道施工风险较大,需采取专门的变形控制措施来保护既有隧道的结构安全,对变形控制措施展开研究十分必要。从下穿、上穿和夹穿3种工况出发,整理分析目前国内关于变形控制措施的研究现状,介绍不同工况下常见控制措施并进行分类,研究注浆加固、隧道内压重、MJS桩、加强型管片及隧道内支撑等几类常见控制措施的原理,分析其主要研究内容及研究成果,提出现有研究的不足并给出建议。The construction risk of shield tunnels to pass through existing metro tunnels in a short distance is relatively high.Special deformation control measures are needed to protect the structural safety of existing tunnels.As a result,it is necessary to study deformation control measures.Considering three working conditions including undercrossing,upper crossing,and intermediate crossing condition,this paper researches the current research status of deformation control measures in China,summarizing the common control measures that are adopted under different working conditions.Moreover,this paper introduces the principles of common control measures such as grouting reinforcement,the internal pressure of tunnels,MJS pile,reinforced segment,and in-tunnel support.Additionally,their main research contents and results are analyzed.Based on the results of the overall analysis,this paper presents some shortcomings of the existing studies and puts forward some corresponding suggestions.

关 键 词：盾构穿越 既有隧道 保护措施 

分 类 号：TU452[建筑科学—岩土工程]