Dynamic finite element strength reduction method of earthquake stability analysis of surrounding rock of tunnel

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	Dynamic finite element strength reduction method of earthquake stability analysis of surrounding rock of tunnel
	Cheng Xuan-sheng1,2 ; Zheng Ying-ren 1; Tian Rui-rui 2
	2011-04-01
发表期刊	Yantu Lixue/Rock and Soil Mechanics
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
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.