| 大断面黄土隧道初期支护适应性研究 |
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| 引用本文： | 扈世民,张顶立,李鹏飞,陈峰宾,张翾.大断面黄土隧道初期支护适应性研究[J].岩土力学,2011,32(Z2):660-665. |
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| 作者姓名： | 扈世民 张顶立 李鹏飞 陈峰宾 张翾 |
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| 作者单位： | 北京交通大学隧道及地下工程实验研究中心; |
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| 基金项目： | 铁道部科技研究开发计划重大项目资助(No.2009G005) |
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| 摘 要： | 以兰渝铁路大断面黄土隧道为工程背景,采用三维数值模拟结合现场监测实验对现有初期支护设计参数的适应性进行研究,对大断面黄土隧道初期支护的受力与变形特性进行综合分析。通过三维数值模拟得到黄土隧道开挖扰动后初期支护的受力与变形状态,将数值计算结果与现场监控量测对比获得典型断面围岩的应力和位移发展规律并对初期支护安全性进行评价;通过FLAC3D的FISH语言开发程序分析混凝土硬化特性对初期支护受力与变形的影响;现场跟踪量测与数值模拟的计算结果基本吻合,结论可为黄土地区隧道初期支护的设计和施工提供一定的借鉴和参考,积累有益的经验。
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| 关 键 词： | 大断面 黄土隧道 适应性 混凝土硬化 三维数值模拟 现场监测 |
| 收稿时间： | 2011-03-31 |
Analysis of initial support adaptability of the large-section loess tunnel |
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| HU Shi-min,ZHANG Ding-li,LI Peng-fei,CHEN Feng-bin,ZHANG Xuan.Analysis of initial support adaptability of the large-section loess tunnel[J].Rock and Soil Mechanics,2011,32(Z2):660-665. |
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| Authors: | HU Shi-min ZHANG Ding-li LI Peng-fei CHEN Feng-bin ZHANG Xuan |
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| Institution: | Research Center of Tunneling and Underground Engineering, Beijing Jiaotong University, Beijing 100044, China |
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| Abstract: | Taking the large-section loess tunnel in Lanzhou-Chongqing railway as the project background,the initial support adaptability is comprehensively researched based on in-situ monitoring and 3D numerical analysis.The mechanical and deformational properties of the initial support are comprehensively analyzed;and then the results of numerical simulation are compared with in-situ monitoring data in order to get the state of stress and displacement which brought to the optimal parameters of the initial support aft... |
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| Keywords: | large-section loess tunnel adaptability the concrete hardening behavior 3d numerical analysis in-situ monitoring |
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