| 隧道三维地震反应分析若干问题的研究 |
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| 引用本文： | 高峰,李德武.隧道三维地震反应分析若干问题的研究[J].岩土工程学报,1998,20(4):51-56. |
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| 作者姓名： | 高峰 李德武 |
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| 作者单位： | 兰州铁道学院工程结构研究所； |
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| 摘 要： | 采用惯性力法数学模型和有限元方法，列出体系的运动方程组，对一隧道洞口段进行了三维地震反应分析，研究了边界约束条件、地震激振方向、隧道周围介质的阻尼常数、横向边界计算范围、抗震缝等因素对隧道地震反应的影响。
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| 关 键 词： | 地震 隧道 结构动力分析 有限元 |
A study on some problems concerning 3 D analysis of seismic responses of tunnels |
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| Gao Feng,Li Dewu.A study on some problems concerning 3 D analysis of seismic responses of tunnels[J].Chinese Journal of Geotechnical Engineering,1998,20(4):51-56. |
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| Authors: | Gao Feng Li Dewu |
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| Affiliation: | Institute of Engineering Structures Lanzhou Raiway College Lanzhou 730070 |
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| Abstract: | Using FEM and a mathematical model based on the concept of inertial force, a program for the 3 D analysis of the seismic responses of tunnel is compiled. Then, 3 D seismic responses for the portal section of a tunnel is analysed by means of FEM. In the analysis, four types of boundary conditions, excitation in three different directions, two groups of damping coefficients of the surrounding rock mass, three different widths of the finite element mesh and the effect of anti sesmic joints of tunnel structure are discussed. |
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| Keywords: | earthquake tunnel dynamic analysis of structure finite element |
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