Dynamic finite element strength reduction method of earthquake stability analysis of surrounding rock of tunnel | |
Cheng Xuan-sheng1,2![]() | |
2011-04-01 | |
发表期刊 | Yantu Lixue/Rock and Soil Mechanics
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ISSN | 10007598 |
卷号 | 32期号:4页码:1241-1248 |
摘要 | In order to obtain earthquake safety factor of surrounding rock of tunnel, using FEM software ANSYS, firstly, modal analysis is done by adopting the model under the horizontal earthquake action; and then mass damping coefficient and stiffness damping coefficient are obtained. Secondly, the horizontal support reaction force along the vertical borders is obtained by the static analysis. Thirdly, for considering the gravity influence in dynamic analysis, structure gravity is become into temperature boundary condition; and the temperature of each node in model is obtained by thermal analysis. Finally, adopting the dynamic analysis model of cantilever beam, and inputting into the node temperature which is obtained by using thermal analysis, and applying the level support reaction force along the vertical borders, cohesion c and friction angle φ in plastic zone are continuously discounted until the calculation is not convergent; and then the earthquake safety factor of surrounding rock of tunnel is obtained. Numerical example result shows that this approach is feasible, the measure that the structure gravity is become into the node temperature solves the difficulty that the structure gravity can not be considered in previous dynamic analysis; and so a theoretical basis is provided for dynamic safety factor calculation and engineering application of surrounding rock of tunnel under earthquake. |
关键词 | Convergence of numerical methods Damping Earthquakes Factor analysis Finite element method Modal analysis Numerical methods Rocks Safety factor Static analysis Temperature distribution Thermoanalysis Tunnels Damping coefficients Dynamic analysis models Dynamic finite element Earthquake stability Engineering applications Surrounding rock of tunnel Surrounding rock structures Temperature boundary |
收录类别 | EI ; ESCI |
语种 | 中文 |
WOS研究方向 | Engineering |
WOS类目 | Engineering, Geological |
WOS记录号 | WOS:000410709000048 |
出版者 | Academia Sinica |
EI入藏号 | 20112114001744 |
EI主题词 | Earthquake engineering |
EI分类号 | 401.2 Tunnels and Tunneling - 484 Seismology - 641.1 Thermodynamics - 723.5 Computer Applications - 801 Chemistry - 914.1 Accidents and Accident Prevention - 921 Mathematics - 921.6 Numerical Methods - 922.2 Mathematical Statistics - 931.1 Mechanics |
来源库 | Compendex |
分类代码 | 401.2 Tunnels and Tunneling - 484 Seismology - 641.1 Thermodynamics - 723.5 Computer Applications - 801 Chemistry - 914.1 Accidents and Accident Prevention - 921 Mathematics - 921.6 Numerical Methods - 922.2 Mathematical Statistics - 931.1 Mechanics |
引用统计 | 无
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文献类型 | 期刊论文 |
条目标识符 | https://ir.lut.edu.cn/handle/2XXMBERH/111324 |
专题 | 土木工程学院 |
通讯作者 | Cheng Xuan-sheng |
作者单位 | 1.Logist Engn Univ, Dept Civil Engn, Chongqing 400041, Peoples R China; 2.Lanzhou Univ Technol, Sch Civil Engn, Lanzhou 730050, Gansu, Peoples R China |
第一作者单位 | 兰州理工大学 |
通讯作者单位 | 兰州理工大学 |
推荐引用方式 GB/T 7714 | Cheng Xuan-sheng,Zheng Ying-ren,Tian Rui-rui. Dynamic finite element strength reduction method of earthquake stability analysis of surrounding rock of tunnel[J]. Yantu Lixue/Rock and Soil Mechanics,2011,32(4):1241-1248. |
APA | Cheng Xuan-sheng,Zheng Ying-ren,&Tian Rui-rui.(2011).Dynamic finite element strength reduction method of earthquake stability analysis of surrounding rock of tunnel.Yantu Lixue/Rock and Soil Mechanics,32(4),1241-1248. |
MLA | Cheng Xuan-sheng,et al."Dynamic finite element strength reduction method of earthquake stability analysis of surrounding rock of tunnel".Yantu Lixue/Rock and Soil Mechanics 32.4(2011):1241-1248. |
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