| 某小净距隧道施工开挖数值模拟分析 |
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| 引用本文： | 李宏科,杨转运,刘会,张金梅,张兴梅.某小净距隧道施工开挖数值模拟分析[J].交通科技与经济,2009,11(6):87-90. |
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| 作者姓名： | 李宏科 杨转运 刘会 张金梅 张兴梅 |
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| 作者单位： | [1]重庆交通大学桥梁结构工程交通行业重点实验室,重庆400074 [2]中国葛洲坝集团股份有限公司,湖北宜昌443002 [3]四川建筑职业技术学院,四川德阳618000 [4]重庆广播电视大学,重庆400052 |
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| 摘 要： | 某隧道为独立双洞单向行车各3车道隧道，该隧道与另外一公路连接段工程A、B线匝道隧道构成立体交叉，两隧道二次衬砌的最小净距仅190cm。根据施工顺序讨论后建连接道隧道对既有隧道的影响。通过扰动周围的土体，使周围土体的应力-应变发生新变化规律，从而掌握小净距隧道围岩和支护结构的稳定和安全程度。研究结果对立体交叉小净距结构的应力-应变规律具有作用。
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| 关 键 词： | 小净距隧 数值模拟 施工步骤 |
Analysis of Structural Stress and Strain of Small Distance Tunnels Excavation by Using Numerical Simulation Method |
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| LI Hong-ke,YANG Zhuan-yun,LIU Hui,ZHANG Jin-mei,ZHANG Xing-mei.Analysis of Structural Stress and Strain of Small Distance Tunnels Excavation by Using Numerical Simulation Method[J].Technology & Economy in Areas of Communications,2009,11(6):87-90. |
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| Authors: | LI Hong-ke YANG Zhuan-yun LIU Hui ZHANG Jin-mei ZHANG Xing-mei |
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| Institution: | 1. Key Laboratory of Bridge-structure Engineering of Ministry of Communications, Chongqing Jiaotong University, Chongqing 400074, China; 2 . China Gezhouba Group Co. , Ltd. , Yichang 443002, Hubei, China; 3. Sichuan College of Architectural Technology, Deyang 618000, Sichuan, China; 4. Chongqing Radio ＆ TV University, Chongqing 400052, China) |
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| Abstract: | A tunnel as an independent two-hole one-way three-lane carriageway of the tunnel, the tunnel road connecting with another section A, B lines constitute the tunnel interchange ramp, the two tunnel secondary lining the minimum distance is only 190cm. This paper discussed the order in accordance with the construction after the tunnel link to build on the existing major impact of a tunnel through the surrounding soil disturbance to surrounding soil stress and strain changes in new laws so as to equip the tube tunnels with small spacing rock retaining structure and the stability and safety. The results of the grade separation structure with small spacing of the stress-strain laws of guiding significance to grasp. |
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| Keywords: | small distance tunnels numerical simulation method excavation sequence |
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