非一致地震激励地下综合管廊振动台模型试验研究(Ⅲ)——数值模拟
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摘要
根据非一致地震激励地下综合管廊振动台模型试验结果,以有限元软件ABAQUS为平台,定义了约束方程来考虑层状剪切砂箱的模型箱效应。土体采用线性扩展Drucker-Prager本构模型,并采用主从接触面模型考虑土-结构相互作用,建立了三维有限元模型。对各种试验输入工况下土-综合管廊体系的地震反应进行了数值模拟,并与试验结果进行了对比。结果表明:数值模拟结果与模型试验结果吻合较好。文中所提建模方法合理,可用于后续的分析。
Based on the results of the large-scale shaking table test of an underground utility tunnel under non-uniform seismic excitation,the seismic response of the soil-utility tunnel system under different test conditions are analyzed by using ABAQUS,considering the influence of the soil-structure interaction by 3D finite element methods.In the numerical model,restriction equations are used to model the laminar shear box,linear extended Drucker-Prager constitutive model is used to simulate the soil,and the soil-structure interaction is considered by the master-slave contact model.And then the simulation results and the shaking table test records are compared in detail.The results show that the simulation results and the pattern of seismic responses of the soil-utility tunnel system are basically identical with those of the shaking table test.So that,the analysis results and the shaking table test results are proved to be correct.
Based on the results of the large-scale shaking table test of an underground utility tunnel under non-uniform seismic excitation,the seismic response of the soil-utility tunnel system under different test conditions are analyzed by using ABAQUS,considering the influence of the soil-structure interaction by 3D finite element methods.In the numerical model,restriction equations are used to model the laminar shear box,linear extended Drucker-Prager constitutive model is used to simulate the soil,and the soil-structure interaction is considered by the master-slave contact model.And then the simulation results and the shaking table test records are compared in detail.The results show that the simulation results and the pattern of seismic responses of the soil-utility tunnel system are basically identical with those of the shaking table test.So that,the analysis results and the shaking table test results are proved to be correct.
引文
[1]史晓军,陈隽,李杰.非一致地震激励下地下综合管廊振动台模型试验研究(I)——试验方法[J].地震工程与工程振动,2010,30(1):147-154.
[2]陈隽,史晓军,李杰.非一致地震激励下地下综合管廊振动台模型试验研究(II)——试验结果[J].地震工程与工程振动,2010,30(2):123-130.
[3]王琴.地下管线非一致激励地震反应分析[D].上海:同济大学,2008.
[4]陈波,吕西林,李培振,等.用ANSYS模拟结构-地基动力相互作用振动台试验的建模方法[J].地震工程与工程振动,2002,22(1):126-131.
[5]史晓军.非一致地震激励地下综合管廊大型振动台试验研究[D].上海:同济大学,2008.
[6]Vanmarke E H,Lai SP.Strong motion duration and RMS amplitude of earthquake[J].Bulletin of the Seismological Society of American,1980,70(4):1293-1307.
[7]李杰,李国强.地震工程学导论[M].北京:地震出版社,1992.
[2]陈隽,史晓军,李杰.非一致地震激励下地下综合管廊振动台模型试验研究(II)——试验结果[J].地震工程与工程振动,2010,30(2):123-130.
[3]王琴.地下管线非一致激励地震反应分析[D].上海:同济大学,2008.
[4]陈波,吕西林,李培振,等.用ANSYS模拟结构-地基动力相互作用振动台试验的建模方法[J].地震工程与工程振动,2002,22(1):126-131.
[5]史晓军.非一致地震激励地下综合管廊大型振动台试验研究[D].上海:同济大学,2008.
[6]Vanmarke E H,Lai SP.Strong motion duration and RMS amplitude of earthquake[J].Bulletin of the Seismological Society of American,1980,70(4):1293-1307.
[7]李杰,李国强.地震工程学导论[M].北京:地震出版社,1992.
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