盾构隧道管片接缝内外双道密封垫防水性能试验研究

张稳军; 周鑫南; 张高乐; 贺维国; 于勇

doi:10.3973/j.issn.2096-4498.2024.09.003

隧道建设 >

2024 , Vol. 44 >Issue 9: 1744 - 1751

DOI: https://doi.org/10.3973/j.issn.2096-4498.2024.09.003

极端环境（寒区等）隧道专题

盾构隧道管片接缝内外双道密封垫防水性能试验研究

张稳军 ,
周鑫南 ,
张高乐 ,
贺维国 ,
于勇

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(1. 天津大学建筑工程学院，天津 300354； 2. 广西大学土木建筑工程学院，广西南宁 530004；3. 中铁第六勘察设计院集团有限公司，天津 300133)

张稳军（1975—），男，甘肃平凉人，2008年毕业于日本早稻田大学，建设工学专业，博士，教授，现从事隧道与地下工程设计和施工的新方法、新技术、新结构、新材料研发及应用研究工作。 E-mail: wjzhang@gxu.edu.cn。

网络出版日期: 2024-10-12

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Experimental Study on Waterproof Performance of Double-Sealing Gaskets at Segmental Joints of Shield Tunnels

ZHANG Wenjun ,
ZHOU Xinnan ,
ZHANG Gaole ,
HE Weiguo ,
YU Yong

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(1. School of Civil Engineering, Tianjin University, Tianjin 300354, China; 2. School of Civil and Architectural Engineering, Guangxi University, Nanning 530004, Guangxi, China; 3. China Railway Liuyuan Group Co., Ltd., Tianjin 300133, China)

Online published: 2024-10-12

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摘要

为探究螺栓孔防水对内外双侧布置双道密封垫防水体系的影响，依托某超大直径盾构隧道工程，自主设计新型双道密封垫防水性能测试装置，开展考虑螺栓孔构造的内外双道密封垫防水体系耐水压测试。研究结果表明： 1）螺栓孔对内外双侧布置双道密封垫的整体防水性能具有一定的控制作用，当螺栓孔防水能力不足时，其存在将成为内外双道密封垫防水体系的薄弱环节，可能早于内道密封垫发生渗漏，由此降低内外双道密封垫防水性能较单道密封垫的提升水平； 2）当螺栓孔防水性能达到要求后，与单道密封垫相比，内外双侧布置双道密封垫防水体系的防水能力大幅提升； 3）对于超大直径盾构隧道，当管片接缝采用内外双侧布置双道密封垫时，应确保螺栓孔防水性能满足双道密封垫间的协同防水要求。

关键词： 盾构隧道; 管片接缝防水; 双道密封垫; 螺栓孔防水; 高水压; 防水试验

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张稳军 , 周鑫南 , 张高乐 , 贺维国 , 于勇 . 盾构隧道管片接缝内外双道密封垫防水性能试验研究[J]. 隧道建设, 2024 , 44(9) : 1744 -1751 . DOI: 10.3973/j.issn.2096-4498.2024.09.003

Abstract

A self-designed device for testing the waterproof performance of double-sealing gaskets is applied in a super-large diameter shield tunnel to conduct water pressure resistance experiments on the inner and outer double-sealing gaskets considering bolt holes. Through these experiments, the waterproof performance of bolt-hole on double-sealing gasket systems is investigated. The results demonstrate the following: (1) The bolt holes control the overall waterproof performance of the double-sealing gaskets fixed on the inner and outer sides of the segmental joint. When they leak under insufficient waterproof capacity, the improvement in waterproof performance of double-sealing gaskets is less, compared to that when a single-sealing gasket is used. (2) The waterproof performance of double-sealing gaskets is considerably enhanced with sufficient waterproof performance of the bolt holes. (3) The waterproof performance of bolt holes should meet the collaborative waterproof requirements of double-sealing gaskets when applying them in super-large diameter shield tunnels.

Key words： shield tunnel; segmental joint waterproof; double-sealing gaskets; bolt-hole waterproof; high water pressure; waterproof test

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