| 双侧壁导坑施工数值模拟 |
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| 引用本文： | 王金宝,张冰. 双侧壁导坑施工数值模拟[J]. 交通科技, 2008, 0(5) |
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| 作者姓名： | 王金宝 张冰 |
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| 作者单位： | 1. 云南祥临公路建设指挥部,弥渡,675600
2. 武汉理工大学土木工程与建筑学院,武汉,430070 |
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| 摘 要： | 针对隧道洞口浅埋段双侧壁导坑施工工艺的特点,对某高速公路隧道进行了数值模拟,定性地分析了双侧壁导坑开挖法施工力学行为.研究表明,在开挖初期,临时钢架与核心土共同作用形成一个承载整体,能有效地减少地表沉降变形;上部核心土开挖后,临时钢架与初衬连接处出现应力集中现象,在开挖过程中应引起重视.
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| 关 键 词： | 隧道工程 双侧壁导坑施工法 数值模拟 |
Numerical Simulations of Two-side Wall Pilot Construction |
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| Wang Jinbao,Zhang Bing. Numerical Simulations of Two-side Wall Pilot Construction[J]. Transportation Science & Technology, 2008, 0(5) |
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| Authors: | Wang Jinbao Zhang Bing |
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| Affiliation: | Wang Jinbao1,Zhang Bing2(1.XiangLin Highway Construction Headquarters,Midu 675600,China,2.Civil Engineering , Architecture College of Wuhan University of Technology,Wuhan 430070,China) |
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| Abstract: | Aiming at the characteristic of two-side wall pilot construction,this paper simulated the excavation of a tunnel in Erguang highway by Ansys,through which the construction mechanics is studied.The study shows that,in the beginning of excavation,the displacement of surrounding rock above the tunnel is reduced effectively due to the cooperation of temporary steel arc and core soil,and stress concentration occurs at the junction of preliminary bracing and temporary steel arc when the core soil is excavated,whi... |
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| Keywords: | tunnel engineering two-side wall pilot construction numerical simulation |
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