基于多尺度几何有限元模型分析的地铁盾构隧道地震反应研究
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摘要
本文以武汉地铁为工程背景,以大型商业非线性有限元软件ABAQUS为计算平台,采用黏弹性人工边界避免地震波在土体截断边界上产生的虚假反射。采用混凝土塑性损伤模型模拟隧道管片在地震荷载下的非线性动力响应。采用局部精细化几何隧道管片模型代替原粗糙几何模型,从而建立同时描述结构宏观行为和局部细观行为的多尺度几何有限元模型。本文分析方法可为此类抗震数值分析提供参考。
In the engineering background of Wuhan metro,based on commercial FEM software ABAQUS for computing platform,using viscoelastic boundary to avoid false reflection of seismic wave on the artificial truncated boundary in soil,using local refined geometry model instead of rough geometry one,this paper has built a multi-scale geometry model which describes both macroscopic and microscopic mechanics. This method can provide reference for seismic resistance analysis.
In the engineering background of Wuhan metro,based on commercial FEM software ABAQUS for computing platform,using viscoelastic boundary to avoid false reflection of seismic wave on the artificial truncated boundary in soil,using local refined geometry model instead of rough geometry one,this paper has built a multi-scale geometry model which describes both macroscopic and microscopic mechanics. This method can provide reference for seismic resistance analysis.
引文
[1]禹海涛.软土盾构隧道多尺度仿真方法及大规模地震响应分析[D].上海:同济大学,2011.YU Haitao.Multi-scale method and large-scale seismic response analysis of shield tunnel in soft soils[D].Shanghai:Tongji University,2011.(in Chinese)
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[4]Michopoulos J G,Fathat C,Fish J.Modeling and simulation of multi-physics systems[J].Journal of Computing and Information Science in Engineering.2005,5(2);198-213.
[5]LIU J,DU Y,DU X,et al.3D viscous-spring artificial boundary in time domain[J].Earthquake Engineering and Engineering Vibration,2006,5(1):93-102.
[6]陈磊,陈国兴,龙慧.地铁交叉隧道近场地震反应特性的三维精细化非线性有限元分析[J].岩土力学,2010,31(12):3971-3983.CHEN Lei,CHEN Guoxing,LONG Hui.3D refined nonlinear finite element analysis of interescting metro tunnels under near-field ground motion[J].Rock and Soil Mechanics,2010,31(12):3971-3983.(in Chinese)
[7]庄海洋,陈国兴,胡晓明.两层双柱岛式地铁车站结构水平向非线性地震反应分析[J].岩石力学与工程学报,2006,25(增刊):3074-3079.ZHUANG Haiyang,CHEN Guoxing,HU Xiaoming.Analysis of nonlinear earthquake response of two-layer double-column subway station structure[J].Chinese Journal of Rock Mechanics and Engineering,2006,25(S0):3074-3079.(in Chinese)
[2]Xiao SP,Belytschko T.A bridging domain method for coupling continua with molecular dynamics[J].Computer Methods in Applied Mechanics and Engineering,2004,193:1645-1669.
[3]Adnan I,Damijan M.Strong coupling methods in multiphase and multi-scale modeling of inelastic behavior of heterogeneous structures[J].Computer Methods in Applied Mechanics and Engineering,2003,192:3089-3107.
[4]Michopoulos J G,Fathat C,Fish J.Modeling and simulation of multi-physics systems[J].Journal of Computing and Information Science in Engineering.2005,5(2);198-213.
[5]LIU J,DU Y,DU X,et al.3D viscous-spring artificial boundary in time domain[J].Earthquake Engineering and Engineering Vibration,2006,5(1):93-102.
[6]陈磊,陈国兴,龙慧.地铁交叉隧道近场地震反应特性的三维精细化非线性有限元分析[J].岩土力学,2010,31(12):3971-3983.CHEN Lei,CHEN Guoxing,LONG Hui.3D refined nonlinear finite element analysis of interescting metro tunnels under near-field ground motion[J].Rock and Soil Mechanics,2010,31(12):3971-3983.(in Chinese)
[7]庄海洋,陈国兴,胡晓明.两层双柱岛式地铁车站结构水平向非线性地震反应分析[J].岩石力学与工程学报,2006,25(增刊):3074-3079.ZHUANG Haiyang,CHEN Guoxing,HU Xiaoming.Analysis of nonlinear earthquake response of two-layer double-column subway station structure[J].Chinese Journal of Rock Mechanics and Engineering,2006,25(S0):3074-3079.(in Chinese)
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