| 带裂缝隧道衬砌的安全评价及有限元分析 |
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| 引用本文： | 贺志勇,钟宏武,陈振华. 带裂缝隧道衬砌的安全评价及有限元分析[J]. 隧道建设, 2019, 39(Z2): 69-77. DOI: 10.3973/j.issn.2096-4498.2019.S2.009 |
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| 作者姓名： | 贺志勇 钟宏武 陈振华 |
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| 作者单位： | (1. 华南理工大学土木与交通学院, 广东广州 510640; 2. 台湾高雄大学土木与环境工程系, 台湾高雄 081148) |
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| 基金项目： | 国家自然科学基金青年科学基金资助项目(51508204) |
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| 摘 要： | 为研究衬砌裂缝对隧道结构安全的影响,以某公路隧道的裂缝监测为工程背景,从80 处裂缝监测点中选取10 条典型裂缝, 采用综合判定法进行安全性评估,得出危险的裂缝断面,随后应用Midas/ GTS 软件建立典型裂缝断面的有限元模型,并对隧道衬砌结构的承载能力进行安全性分析。计算结果表明: 隧道衬砌出现裂缝使得衬砌结构的承载能力发生变化,其整个受力分布规律也会发生改变,重新分布力会导致现有裂缝发展,并使其他位置发生新的开裂,应根据计算结果对薄弱部位进行加固。研究结果表明: 通过采用定性的安全性评价与定量的理论计算相结合的方法,可以对带裂缝隧道衬砌结构的安全性作出科学的评估。
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| 关 键 词： | 公路隧道 衬砌裂缝 隧道结构 安全性评价 有限元分析 |
| 收稿时间： | 2019-09-20 |
Safety Evaluation and Finite Element Analysis of Tunnel Lining with Cracks |
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| HE Zhiyong,ZHONG Hongwu,CHEN Zhenhua. Safety Evaluation and Finite Element Analysis of Tunnel Lining with Cracks[J]. Tunnel Construction, 2019, 39(Z2): 69-77. DOI: 10.3973/j.issn.2096-4498.2019.S2.009 |
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| Authors: | HE Zhiyong ZHONG Hongwu CHEN Zhenhua |
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| Affiliation: | (1. School of Civil Engineering and Transportation, South China University of Technology, Guangzhou, 510640, Guangdong, China; 2. Department of Civil and Environmental Engineering, National University of Kaohsiung, Kaohsiung 081148, Taiwan, China) |
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| Abstract: | Ten typical cracks are selected from 80 crack monitoring points of a highway tunnel, and the comprehensive evaluation method is used to evaluate the safety of the cracks. The dangerous crack cross-sections are obtained, the finite element model of typical fracture cross-section is established by Midas/ GTS, and the bearing capacity and safety factor of tunnel lining structure are calculated. The calculation results show that when the tunnel lining cracks, the bearing capacity of the lining structure varies, and the stress distribution law varies as well, which will lead to crack development and new cracks, resulting in reinforcement of weak points. The research results show that through the combination of qualitative safety evaluation and quantitative theoretical calculation, the safety of the lining structure with cracks can be scientifically evaluated. |
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| Keywords: | highway tunnel lining crack tunnel structure safety evaluation finite element analysis |
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