| 公路隧道软弱围岩施工开挖受力特性研究 |
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| 引用本文： | 王渭,房顺涛. 公路隧道软弱围岩施工开挖受力特性研究[J]. 交通节能与环保, 2019, 15(2): 120-123 |
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| 作者姓名： | 王渭 房顺涛 |
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| 作者单位： | 中国公路工程咨询集团有限公司,北京 100089;中咨华科交通建设技术有限公司,北京 100195;中国公路工程咨询集团有限公司,北京 100089;中咨华科交通建设技术有限公司,北京 100195 |
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| 摘 要： | 软弱围岩公路隧道开挖工程中经常遇到事故,因此研究隧道施工开挖围岩受力及变形特性对工程建设具有积极的指导意义。本文通过MIDAS有限元分析软件,构建了软弱围岩-隧道-岩土体相互耦合作用下的力学模型,研究分析了隧道开挖过程中围岩应力场分布、锚杆轴力、二次衬砌内力、拱顶下沉及隧道净空收敛规律。对进一步研究隧道开挖施工围岩受力特性研究提供了借鉴意义。
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| 关 键 词： | 隧道 围岩 受力 特性 |
Study on the Stress Characteristics of Excavation of Soft Surrounding Rock in Highway Tunnel |
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| WANGWei,FANG Shuntao. Study on the Stress Characteristics of Excavation of Soft Surrounding Rock in Highway Tunnel[J]. Marine Energy Saving, 2019, 15(2): 120-123 |
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| Authors: | WANGWei FANG Shuntao |
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| Affiliation: | (China Highway Engineering Consulting Group Co.,Ltd.,Beijing 100089,China;Zhongzhe Huake Transportation Construction Technology Co.,Ltd.,Beijing 100195,China) |
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| Abstract: | Accidents are often encountered during the excavation of soft surrounding rock road tunnels.Therefore,it is of great significance to study the stress and deformation characteristics of surrounding rock in tunnel construction.In this paper,the mechanical model of soft surrounding rock-tunnel-rock and soil interaction is constructed by MIDAS finite element analysis software.The distribution of surrounding rock stress field,anchor axial force and secondary lining internal force during tunnel excavation are analyzed.,the collapse of the vault and the convergence of the tunnel clearance.It will provide some reference for further study on the stress characteristics of surrounding rock in tunnel excavation construction. |
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| Keywords: | tunnel surrounding rock force characteristics |
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