| 山岭隧道突水对衬砌结构受力影响数值分析 |
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| 引用本文： | 高新强,仇文革,高扬.山岭隧道突水对衬砌结构受力影响数值分析[J].中国铁道科学,2004,25(6):54-58. |
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| 作者姓名： | 高新强 仇文革 高扬 |
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| 作者单位： | 1. 西南交通大学,土木工程学院,四川,成都,610031
2. 铁道第二勘测设计院,桥隧处,四川,成都,610031 |
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| 基金项目： | 铁道部科技研究开发计划项目(2001G009 2) |
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| 摘 要： | 用有限元数值模型,分析隧道断面上8个不同位置10种不同水压突水条件下衬砌结构的受力特征。结果表明:突水位置发生在仰拱或墙脚位置时,对衬砌结构的受力影响显著;突水对衬砌结构上的最大正弯矩和最大剪力影响最显著,而对最大负弯矩和最大轴力影响要相对小一些。运用结构力学的弯矩影响线理论,把突水压力作为衬砌结构上的移动荷载,给出不同突水压力下衬砌结构的弯矩包络图。
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| 关 键 词： | 山岭隧道 衬砌结构 突水 弯矩包络图 数值分析 |
| 文章编号： | 1001-4632(2004)06-0054-05 |
| 修稿时间： | 2004年4月7日 |
Numerical Analysis of the Suddenly Effluent Water Influence on the Mechanical Behavior of the Lining Structure in Mountain Tunnel |
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| GAO Xin-qiang,QIU Wen-ge,GAO Yang.Numerical Analysis of the Suddenly Effluent Water Influence on the Mechanical Behavior of the Lining Structure in Mountain Tunnel[J].China Railway Science,2004,25(6):54-58. |
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| Authors: | GAO Xin-qiang QIU Wen-ge GAO Yang |
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| Institution: | GAO Xin-qiang~1,QIU Wen-ge~1,GAO Yang~2 |
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| Abstract: | Mechanical behavior of lining structure is analyzed under 10 different conditions that high water pressure suddenly effluent water upon 8 different parts of tunnel section with FEM numerical model. The results show that mechanical behavior of lining structure change evidently when suddenly effluent water happen at inverted arch or foot of wall. Suddenly effluent water influences most evidently on maximum of positive bending moment and shear force of lining structure but influences smaller on maximum of negative bending moment and axial force. Figures all-embracing moment of lining structure on different water pressure are given, taking pressure of suddenly effluent water as move load act on lining by applying the theory of structure mechanics moment influence line. |
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| Keywords: | Mountain tunnel Lining structure Suddenly effluent water Figure of all-embracing moment Numerical analysis |
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