| 三车道连拱隧道施工围岩受力特性数值模拟研究 |
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| 引用本文： | 陆先明,吴梦军,胡学兵. 三车道连拱隧道施工围岩受力特性数值模拟研究[J]. 公路交通技术, 2007, 0(4): 87-90 |
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| 作者姓名： | 陆先明 吴梦军 胡学兵 |
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| 作者单位： | 1. 肇庆市广贺高速公路有限公司,广东,肇庆,526200
2. 重庆交通科研设计院,重庆,400067 |
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| 摘 要： | 双洞6车道连拱隧道由于跨度大,断面扁平率小,施工工序复杂,隧道围岩在施工期间经历多次扰动,故使其受力条件极为复杂,施工过程中围岩与结构的受力特征与双洞4车道连拱隧道或分离式隧道存在较大差异。通过对双洞6车道连拱隧道洞口软弱围岩段施工过程进行数值模拟分析,得到其施工过程中围岩与结构的应力、位移、屈服接近度等发展规律,为类似工程提供参考。
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| 关 键 词： | 3车道 连拱隧道 软弱围岩 数值模拟 |
| 文章编号： | 1009-6477（2007）04-0087-04 |
| 修稿时间： | 2007-04-25 |
Study on Numeric Simulation of Surrounding Rock Mechanical Behaviour in 3-Lanes Continuous Arch Tunnels Construction |
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| Lu Xianming,Wu Mengjun,Hu Xuebin. Study on Numeric Simulation of Surrounding Rock Mechanical Behaviour in 3-Lanes Continuous Arch Tunnels Construction[J]. Technology of Highway and Transport, 2007, 0(4): 87-90 |
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| Authors: | Lu Xianming Wu Mengjun Hu Xuebin |
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| Abstract: | As for two ports 6 lanes continuous arch tunnels,because of large span,small flatness of section,complicated construction procedures,multiple interference of surrounding rock during construction,its stress conditions are extremely complicated,the stress features of surrounding rock and structure during construction is quite different with that of the 2-ports 4 lanes continuous arch tunnels or separated tunnels.This paper,through numeric simulation and analysis of weak surrounding rock construction at the mouth of 2-ports 6 lanes continuous arch tunnel,obtaines development rules of stresses,displacements,yield approaching degress of surrounding rocks and structures during construction,which provides reference for similar projects. |
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| Keywords: | 3-lanes continuous arch tunnel weak surrounding rock numeric simulation |
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