| 地铁盾构隧道衬砌管片密封槽尺寸优化分析 |
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| 引用本文： | 杨贵生,李宏亮,丁,超,张稳军.地铁盾构隧道衬砌管片密封槽尺寸优化分析[J].土木工程学报,2019,52(Z1):93. |
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| 作者姓名： | 杨贵生 李宏亮 丁 超 张稳军 |
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| 作者单位： | 1．中国铁路设计集团有限公司，天津 300142；2．天津大学建筑工程学院，天津 300354；3．天津大学滨海土木工程结构与
安全教育部重点实验室，天津 300354；4．北京交通大学城市地下工程教育部重点实验室，北京 100044 |
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| 摘 要： | 文中以天津市地铁Z2号线衬砌管片密封槽截面尺寸为基础，根据经验公式提出了一种密封垫断面形式，从弹性橡胶密封垫防水机理及防水失效影响因素出发，提出不同密封槽尺寸对应的密封垫修改方法，并根据此方法建立不同工况下的二维数值模型。通过数值计算，得到张开量为零时密封垫表面平均接触应力、闭合压力，分析密封槽尺寸对密封垫防水性能影响规律，并提出密封槽尺寸设计及优化建议。
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| 关 键 词： | 数值模拟 橡胶密封垫 衬砌管片密封槽 接缝防水 |
Optimization analysis of sealing groove of lining segment of #br#
subway shield tunnel |
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| Yang Guisheng,Li Hongliang,Ding Chao,Zhang Wenjun.Optimization analysis of sealing groove of lining segment of #br#
subway shield tunnel[J].China Civil Engineering Journal,2019,52(Z1):93. |
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| Authors: | Yang Guisheng Li Hongliang Ding Chao Zhang Wenjun |
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| Affiliation: | 1. China Railway Design Group Corporation, Tianjin 300142, China;
2. School of Civil Engineering, Tianjin University, Tianjin 300354, China;
3. Key Laboratory of Coast Civil Structure Safety of the Education Ministry, Tianjin University, Tianjin 300354, China;
4. Key Laboratory of Urban Underground Engineering of Ministry of Education, Beijing Jiaotong University, Beijing 100044, China |
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| Abstract: | Based on the cross-section dimensions of the sealing groove of the lining segment of Tianjin Metro Z2 line, this paper designs a gasket section form according to the empirical formula. Based on the waterproof mechanism of the elastic rubber gasket and the influencing factors of the waterproof failure, the modification method of the gasket when the sealing groove size is different is proposed, and the two-dimensional model under different working conditions is established according to this method. Through numerical simulation, the average contact stress and closing pressure of the gasket surface when the opening amount is 0 are obtained. Then analyze the influence of the size of the sealing groove on the waterproof performance of the gasket, and propose the seal groove size design and optimization suggestions. |
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| Keywords: | numerical simulation rubber gasket lining segment sealing groove joint waterproof |
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