大直径水下盾构隧道接缝弹性密封垫防水性能研究&mdash;&mdash;设计方法与工程指导

龚琛杰; 丁文其

doi:10.3973/j.issn.2096-4498.2018.10.016

隧道建设 >

2018 , Vol. 38 >Issue 10: 1712 - 1722

DOI: https://doi.org/10.3973/j.issn.2096-4498.2018.10.016

规划与设计

大直径水下盾构隧道接缝弹性密封垫防水性能研究——设计方法与工程指导

龚琛杰 ,
丁文其

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(1. 同济大学土木工程学院地下建筑与工程系，上海 200092； 2. 同济大学岩土及地下工程教育部重点实验室，上海 200092)

龚琛杰（1990—），男，重庆璧山人，2018年毕业于同济大学，土木工程专业，博士，主要从事盾构隧道结构性态评估方面的研究工作。 Email: 08gongcj@tongji.edu.cn。

收稿日期: 2018-08-29

修回日期: 2018-10-12

网络出版日期: 2018-10-26

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Waterproof Properties of Elastic Sealing Gaskets Used in Segmental Joints of Largediameter Underwater Shield Tunnels: Design Methodology and Engineering Guidance

GONG Chenjie ,
DING Wenqi

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(1. Department of Geotechnical Engineering, College of Civil Engineering, Tongji University, Shanghai 200092, China; 2. Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education, Tongji University, Shanghai 200092, China)

Received date: 2018-08-29

Revised date: 2018-10-12

Online published: 2018-10-26

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摘要

大直径水下盾构隧道具有大直径、高水压、地质条件复杂等工程特点，对隧道接缝弹性密封垫的防水密封提出了极高的要求。为解决目前国内外该方面研究大多基于某一特定工程进行专项试验，缺少设计方法提炼的问题，在调研国内典型大直径水下盾构隧道的接缝防水构造的基础上，建立接缝弹性密封垫的设计方法，该设计方法由工程参数提取、试验前有限元预分析、试验研究和试验后有限元分析4部分内容构成。最后，应用该设计方法成功指导南京纬三路长江隧道的接缝弹性密封垫设计，证明其科学性和可行性，可为我国类似盾构隧道防水设计实践提供参考。

关键词： 大直径水下盾构隧道; 高水压; 弹性密封垫; 接缝防水设计; 有限元分析; 工程应用

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龚琛杰 , 丁文其 . 大直径水下盾构隧道接缝弹性密封垫防水性能研究——设计方法与工程指导[J]. 隧道建设, 2018 , 38(10) : 1712 -1722 . DOI: 10.3973/j.issn.2096-4498.2018.10.016

Abstract

The largediameter underwater shield tunnel is characterized by large diameter, high water pressure and complex geological conditions. Hence, the requirement for waterproof property of the elastic sealing gasket used in segmental joints is extremely high. At present, most of the special test researches are based on a specific project in China and abroad, and there is no refining of design methods. The representative waterproof structures of segmental joints of the typical largediameter underwater shield tunnels in China are studied; and the design method for the joint elastic gasket is obtained, which consists of four parts, i.e. the extraction of engineering parameters, the preanalysis of finite element before experiment, the experimental research and the finite element analysis after experiment. The method was successfully applied to the design of elastic gasket of tunnel joint of Yangtze Rivercrossing Tunnel on Weisan Road in Nanjing; and the applicable results verify its scientificity and feasibility. The results can provide reference for waterproof design of similar shield tunnel in China in the future.

Key words： largediameter underwater shield tunnel; high water pressure; elastic sealing gasket; waterproof design of joint; finite element analysis; engineering application

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