隔离桩对基坑外侧盾构隧道防护研究综述  

REVIEWS ON PROTECTION OF SHIELD TUNNEL OUTSIDE FOUNDATION PIT BY ISOLATION PILE

作　　者：李奕彤 魏纲 木志远 LI Yitong;WEI Gang;MU Zhiyuan(Department of Civil Engineering,Hangzhou City University,Hangzhou 310015,China;School of Civil Engineering and Architecture,Anhui University of Science&Technology,Anhui Huainan 232001,China)

机构地区：[1]浙大城市学院土木工程系,杭州310015 [2]安徽理工大学土木建筑学院,安徽淮南232001

出　　处：《低温建筑技术》2023年第12期110-115,共6页Low Temperature Architecture Technology

基　　金：浙江省基础公益研究计划项目(LGF22E080012)

摘　　要：基坑开挖会对邻近隧道产生变形、破坏等不利影响,这已成为工程中急需解决的重要研究课题。在实际工程中,通常以在基坑与邻近隧道之间设置隔离桩为主的方式来减小基坑开挖产生的影响。文中将国内外现有研究成果归类为现场实测、数值模拟、模型试验、理论分析4种研究方法,总结归纳了隔离桩对基坑外既有盾构隧道变形保护效果。对实际工程案例、数值模型建立、模型试验、理论问题求解进行了分析总结,得出了隔离桩设计参数、基坑开挖方式等对保护盾构隧道变形起着关键性作用的结论,以及现有实际工程案例较少、模型分析误差大、理论解研究较少等不足之处,并提出未来的研究思路及展望。The excavation of foundation pit has an impact on the adjacent tunnel,such as deformation and damage,which needs to be addressed urgently.In practical engineering,isolation piles are usually set between the foundation pit and the adjacent tunnel to reduce the impact of foundation pit excavation.The article categorizes the existing re⁃search results at home and abroad into on-site measurement,numerical simulation,model testing,and theoretical analysis.The effectiveness of isolation piles in protecting the deformation of existing shield tunnels outside the foun⁃dation pit is summarized.It is concluded that the design parameters of isolating pile and the excavation method of foundation pit play a key role in protecting the deformation of shield tunnel.The shortcomings of the existing practi⁃cal engineering cases are few,the model analysis error is large,and the theoretical solution research is few.The fu⁃ture research ideas and prospects are also put forward.

关 键 词：基坑开挖 盾构隧道 隔离桩 变形控制 

分 类 号：TU473.2[建筑科学—结构工程]