某渡槽拟动力试验的数值模拟分析
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摘要
对某渡槽结构的拟动力试验模型进行了有限元分析,对比了数值计算和实验结果。首先简要介绍了某渡槽结构的拟动力试验,然后给出了数值模拟的计算模型,对不同类型的地震波在不同峰值条件下的墩身、桩体位移进行了比较,结果表明,有限元计算结果与拟动力试验结果的峰值和变化趋势比较接近,在一定程度上证明了该实验的合理性。
Based on the experimental model of pseudo-dynamic structural test on an aqueduct structure,numerical simulation analyses and comparison between simulated and experimental results were presented.After brief introduction of pseudo-dynamic structural test on the aqueduct structure,the simulation model,which is 3D finite element model with pile-soil interaction base on varied Penzien model,was provided.Then comparisons of pillar and pile displacements under different earthquakes with different peak amplitudes were carried out between test and simulation results.The comparison shows that peaks and change trends of the displacements from test and simulation are close.This verifies that,to some extent,the test is reasonable.
Based on the experimental model of pseudo-dynamic structural test on an aqueduct structure,numerical simulation analyses and comparison between simulated and experimental results were presented.After brief introduction of pseudo-dynamic structural test on the aqueduct structure,the simulation model,which is 3D finite element model with pile-soil interaction base on varied Penzien model,was provided.Then comparisons of pillar and pile displacements under different earthquakes with different peak amplitudes were carried out between test and simulation results.The comparison shows that peaks and change trends of the displacements from test and simulation are close.This verifies that,to some extent,the test is reasonable.
引文
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[7]迟福东,王进廷,金峰,汪强.土-结构-流体动力相互作用的实时耦联动力试验.岩土力学2,010,31(12):3765-3770
[8]Housner G.W.Dynamic Pressure on Accelerated Fluid Containers[J].Bulletin of the Seismological of America,1957,47(1):15-35.
[9]孙利民,张晨南,潘龙,等.桥梁桩土相互作用的集中质量模型及参数确定[J].同济大学学报(自然科学版),2002,30(4):409-416
[2]M.Nakashima and H.Takai.Use of substructuring techniques in pseudo dynamic testing.Technical Report Research paper No.111,Building Re-search Institute,Ministry of Construction,Tsukuba,Japan,1985.
[3]S.N.Dermitzakis and S.A.Mahin.Development of substructuring techniques for on-line computer controlled seismic performance testing,Re-port No.UCB/EERC 85-04,University of California,Berkeley,CA,1985
[4]H.Iemura,Y.Yamada and W.Tanzo,Testing R/C specimen by a substructure based hybrid earthquake loading system[C],Proc.of 9thWCEE,Tokyo-Kyoto Japan,Vol.4,August,19883,5-40
[5]邱法维,国明超,李喧.采用微机开发的拟动力实验[J],地震工程与工程振动,1994,14(3):91-96
[6]邱法维.联机结构实验的子结构技术及应用[J].实验力学,1995,10(4):335-342
[7]迟福东,王进廷,金峰,汪强.土-结构-流体动力相互作用的实时耦联动力试验.岩土力学2,010,31(12):3765-3770
[8]Housner G.W.Dynamic Pressure on Accelerated Fluid Containers[J].Bulletin of the Seismological of America,1957,47(1):15-35.
[9]孙利民,张晨南,潘龙,等.桥梁桩土相互作用的集中质量模型及参数确定[J].同济大学学报(自然科学版),2002,30(4):409-416
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