基于并行算法的大型屏障隔振三维数值模拟分析
|
摘要
为减小附近交通车流载荷对高科技设施平台微振动的影响,建立了承台—桩—土体的全三维有限元模型.车流载荷引起的场地位移由现场实测获得,地基为弹性层状地基.运用并行算法中的区域分解法,分析了采用空沟与填充沟隔振时的减振效果,并对影响减振效果的关键性参数进行参数化研究.通过与实测比较,验证计算结果.计算结果为工程的减振设计提供了重要的参考依据.文中最后,分析了三种不同的分区方案对并行算法的加速比与并行效率的影响.
Three-dimensional finite element model of the cap-pile-soil was built in order to investigate the micro vibration of high technology facilities excited by the near traffic vehicles.The soil was considered as elasticity layered medium,and results of traffic-induced ground displacement measured at the field were used as input.Isolation methods included open trench and in-filled trench.Based on domain decomposition method of parallel computing,vibration reduction effects due to open trench and in-filled trench were studies.Compared with the test results,the finite element model was proved.The simulation results could provide reference for the design of vibration reduction.Finally,the speedup and parallel efficiency of three kinds of partition schemes ware analyzed.
Three-dimensional finite element model of the cap-pile-soil was built in order to investigate the micro vibration of high technology facilities excited by the near traffic vehicles.The soil was considered as elasticity layered medium,and results of traffic-induced ground displacement measured at the field were used as input.Isolation methods included open trench and in-filled trench.Based on domain decomposition method of parallel computing,vibration reduction effects due to open trench and in-filled trench were studies.Compared with the test results,the finite element model was proved.The simulation results could provide reference for the design of vibration reduction.Finally,the speedup and parallel efficiency of three kinds of partition schemes ware analyzed.
引文
[1]李志毅,高广运,邱畅.多排桩屏障远场被动隔振分析[J].岩石力学与工程学报,2005,24(21):3990-3995Li Zhiyi,Gao Guangyun,Qiu Chang.Analysis of multi-row of piles as barriers for isolating vibration in far field[J].Chinese of Journal of Rock Mechanics and Engineering,2005,24(21):3990-3995
[2]高广运,李志毅,邱畅.填充沟屏障远场被动隔振三维分析[J].岩土力学,2005,26(8):1184-1188Gao Guangyun,Li Zhiyi,Qiu Chang.Three-dimensional analysis of in-filled trench as barriers for isolating vibration infar field[J].Rock and Soil Mechanics,2005,26(8):1184-1188
[3]徐平,夏唐代,周新民.单排空心管桩屏障对平面SV波的隔离效果研究[J].岩土工程学,2007,29(1):131-136Xu Ping,Xia Tangdai,Zhou Xinmin.Study on effect of barrier of a rowof hollowpipe piles on isolation of incident planeSV waves[J].Chinese Journal of Geotechnical Engineering,2007,29(1):131-136
[4]Yang Y B,Hung HH.A parametric study of wave barriers for reduction of train induced vibrations[J].InternationalJournal for Numerical Methods in Engineering,1997,(40):3729-3747
[5]Yang Y B,Hung HH.A2.5 D finite/infinite element approach for modeling visco-elastic bodies subjected to movingloads[J].International Journal for Numerical Methods in Engineering,2001,(51):1317-1336
[6]Adam M,Estorff O.Reduction of train-induced building vibrations by using open and filled trenches[J].Computers andStructures,2005,(83):11-24
[7]Celebi E.Three-dimensional modeling of train-track and sub-soil analysis for surface vibrations due to moving loads[J].Applied Mathematics and Computation,2006,179(1):209-230
[8]Ju S.Three-dimensional analyses of wave barriers for reduction of train-induced vibrations[J].Journal of Geotechnicaland Geoenvironmental Engineering,2004,(130):740-748
[9]Krysl P,Bittnar Z.Parallel explicit finite element solid dynamics with domain decomposition and message passing:dualpartitioning scalability[J].Computers and Structure,2001,(79):345-360
[10]张克绪,谢军斐.土动力学[M].北京:地震出版社,1989Zhang Kexu,Xie Junfei.Soil eynamic[M].Beijing:Earthquake Press,1989
[11]Kim D,Lee J.Propagation and attenuation characteristics of various ground vibrations[J].Soil Dynamics andEarthquake Engineering,2000,(19):115-126
[2]高广运,李志毅,邱畅.填充沟屏障远场被动隔振三维分析[J].岩土力学,2005,26(8):1184-1188Gao Guangyun,Li Zhiyi,Qiu Chang.Three-dimensional analysis of in-filled trench as barriers for isolating vibration infar field[J].Rock and Soil Mechanics,2005,26(8):1184-1188
[3]徐平,夏唐代,周新民.单排空心管桩屏障对平面SV波的隔离效果研究[J].岩土工程学,2007,29(1):131-136Xu Ping,Xia Tangdai,Zhou Xinmin.Study on effect of barrier of a rowof hollowpipe piles on isolation of incident planeSV waves[J].Chinese Journal of Geotechnical Engineering,2007,29(1):131-136
[4]Yang Y B,Hung HH.A parametric study of wave barriers for reduction of train induced vibrations[J].InternationalJournal for Numerical Methods in Engineering,1997,(40):3729-3747
[5]Yang Y B,Hung HH.A2.5 D finite/infinite element approach for modeling visco-elastic bodies subjected to movingloads[J].International Journal for Numerical Methods in Engineering,2001,(51):1317-1336
[6]Adam M,Estorff O.Reduction of train-induced building vibrations by using open and filled trenches[J].Computers andStructures,2005,(83):11-24
[7]Celebi E.Three-dimensional modeling of train-track and sub-soil analysis for surface vibrations due to moving loads[J].Applied Mathematics and Computation,2006,179(1):209-230
[8]Ju S.Three-dimensional analyses of wave barriers for reduction of train-induced vibrations[J].Journal of Geotechnicaland Geoenvironmental Engineering,2004,(130):740-748
[9]Krysl P,Bittnar Z.Parallel explicit finite element solid dynamics with domain decomposition and message passing:dualpartitioning scalability[J].Computers and Structure,2001,(79):345-360
[10]张克绪,谢军斐.土动力学[M].北京:地震出版社,1989Zhang Kexu,Xie Junfei.Soil eynamic[M].Beijing:Earthquake Press,1989
[11]Kim D,Lee J.Propagation and attenuation characteristics of various ground vibrations[J].Soil Dynamics andEarthquake Engineering,2000,(19):115-126
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心