|本期目录/Table of Contents|

[1]章定文,杨大勇,张小飞,等.橡胶止水带变形适应性与优化设计研究[J].建筑科学与工程学报,2023,40(06):127-136.[doi:10.19815/j.jace.2022.10073]
　ZHANG Dingwen,YANG Dayong,ZHANG Xiaofei,et al.Study on deformation adaptability and optimization design of rubber water stop[J].Journal of Architecture and Civil Engineering,2023,40(06):127-136.[doi:10.19815/j.jace.2022.10073]
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橡胶止水带变形适应性与优化设计研究(PDF)
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《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:
40卷
期数:
2023年06期
页码:
127-136
栏目:
桥梁工程
出版日期:
2023-11-30

文章信息/Info

Title:
Study on deformation adaptability and optimization design of rubber water stop
文章编号:
1673-2049(2023)06-0127-10
作者:
章定文1,杨大勇1,张小飞2,陆佳敏2,高 雷2,李望舒2
(1. 东南大学 交通学院,江苏 南京 211189; 2. 昆山交通发展控股集团有限公司,江苏 昆山 215300)
Author(s):
ZHANG Dingwen1, YANG Dayong1, ZHANG Xiaofei2, LU Jiamin2, GAO Lei2, LI Wangshu2
(1. School of Transportation, Southeast University, Nanjing 211189, Jiangsu, China; 2. Kunshan Transportation Development Holding Group Co., Ltd., Kunshan 215300, Jiangsu, China)
关键词:
隧道工程;  橡胶止水带;  差异沉降;  有限元;  优化设计
Keywords:
tunnel engineering;  rubber water stop;  differential settlement;  finite element;  optimal design
分类号:
TU57
DOI:
10.19815/j.jace.2022.10073
文献标志码:
A
摘要:
橡胶止水带是隧道接缝处最常用的防水措施,但工程实践中橡胶止水带常因隧道接缝处差异沉降过大而发生破坏,进而引发渗漏水病害。采用ABAQUS软件数值模拟方法,分析橡胶止水带的变形适应性,并对其截面形式进行优化设计,提出了适用于更大差异沉降的椭圆形中孔橡胶止水带。结果表明:接缝处的差异沉降是决定橡胶止水带能否起到预定防水效果的关键因素; 工程中常用的圆形中孔橡胶止水带最大能承受约30 mm的差异沉降; 椭圆形中孔橡胶止水带长半轴可减少止水带在差异沉降下的拉伸和剪切应力,并可将止水带的拉伸转换为紧贴混凝土表面的滑动,有效提升了止水带的变形适应性; 橡胶止水带中孔面积占比和长半轴与短半轴长度比值的乘积可有效表征橡胶止水带变形适应性能,其值与椭圆形中孔橡胶止水带可承受的最大差异沉降具有线性关系; 椭圆形中孔面积占比合理取值为0.3～0.4,长半轴和短半轴长度比值的合理取值为1～2.5。
Abstract:
Rubber water stops are the most commonly used waterproofing measure at tunnel joints. However, in engineering practice, rubber water stops are often damaged by excessive differential settlement at tunnel joints, which in turn causes water leakage diseases. The ABAQUS software numerical simulation method was used to analyze the deformation adaptability of the rubber water stop, and the cross-section form was optimized. An elliptical middle-hole rubber water stop suitable for larger differential settlement was proposed. The results show that the differential settlement at the joint is the key factor determining whether the rubber water stop can achieve the predetermined waterproof effect. The circular hole rubber water stops commonly used in the project can withstand the maximum differential settlement of about 30 mm. The long half-axis of the elliptical medium-hole rubber water stop can reduce the tensile and shear stress of the water stop under differential settlement, and can convert the tension of the water stop into the sliding close to the concrete surface, which effectively improves the deformation adaptability of the water stop. The product of the ratio of the area of the hole in the rubber water stop and the ratio of the length of the long half axis to the length of the short half axis can effectively characterize the deformation adaptability of the rubber water stop, and its value has a linear relationship with the maximum differential settlement that the elliptical hole rubber water stop can withstand. The reasonable value of the area ratio of the elliptical hole is 0.3-0.4, and the reasonable value of the length ratio of the long half axis and the short half axis is 1-2.5.

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备注/Memo

备注/Memo:
收稿日期:2023-02-19
基金项目:国家自然科学基金项目(52078129); 昆山交通发展控股集团科技项目(KTDC-FG-JS-20210039)
作者简介:章定文(1978-),男,工学博士,教授,博士生导师,E-mail:zhang@seu.edu.cn。
更新日期/Last Update: 2023-12-01