基于NEESgrid网络的子结构拟动力实验:Mini-MOST实验
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摘要
美国国家科学基金(US National Sc ience Foundation,简称NSF)资助研制开发的地震工程模拟网络(Network for Earthquake Engineering S imu lation,简称NEES)包括15个分布在不同地点的设备站点,并使用NEESgrid网络相互连接。NEESgrid是一个先进的网络设施,它为地震工程研究,尤其是多地点的子结构拟动力实验(Mu lti-site Substructure Pseudo-dynam ic,缩写为MS-PSD)提供了丰富的工具。本文首先简单地介绍了NEES和NEESgrid,然后使用了一个小尺寸的模型实验(M in i-MOST)演示了利用NEESgrid进行MS-PSD实验的过程。实验原型为一个单层二跨的框架结构,实验将该结构划分为两个实验子结构和一个模拟子结构。实验中,这三个子模块使用一个基于M atlab仿真协调程序SIMCOR进行协调,实验的每一步,SIMCOR发送位移请求给各个子模块并接收各子模块恢复力反馈,同时使用a-OS方法计算结构反应以及下一步的位移。实验结果与分析结果吻合相当好,展示了NEESgrid在多地点远程拟动力实验方面的能力。
In late 1999,the US National Science Foundation(NSF) launched a major new project known as the George E.Brown,Jr.Network for Earthquake Engineering Simulation(NEES).NEES includes 15 geographically-distributed equipment sites networked by NEESgrid——a pioneering cyberinfrastructure which links between earthquake engineers and researchers around the world with leading-edge computing resources and research equipment.NEESgrid provides a rich set of tools for earthquake engineering research,particularly in multi-site pseudo-dynamic sub-structure(MS-PSD) testing.In this paper,a brief overview on NEES and NEESgrid is provided.To illustrate the efficacy of NEESgrid in conducting MS-PSD testing,a Mini-scale Multi-site Online Simulation Testbed(Mini-MOST) experimental setup is employed.This experimental setup intends to test a two-bay frame structure and it is divided into two experimental modules and one analytical module.During the experiment,these three modules are coordinated by a Matlab-based simulation coordinate program SIMCOR which was developed at the University of Illinois at Urbana-Champaign(UIUC).SIMCOR sends displacement command to each individual module and receives the force response from it,and uses α operator-split(α-OS) method for time integration of structural responses.Experimental results are able to match analytical resutls.This demonstrates that NEESgrid is an effective tool for multi-site pseudo-dynamic sub-structure testing.
In late 1999,the US National Science Foundation(NSF) launched a major new project known as the George E.Brown,Jr.Network for Earthquake Engineering Simulation(NEES).NEES includes 15 geographically-distributed equipment sites networked by NEESgrid——a pioneering cyberinfrastructure which links between earthquake engineers and researchers around the world with leading-edge computing resources and research equipment.NEESgrid provides a rich set of tools for earthquake engineering research,particularly in multi-site pseudo-dynamic sub-structure(MS-PSD) testing.In this paper,a brief overview on NEES and NEESgrid is provided.To illustrate the efficacy of NEESgrid in conducting MS-PSD testing,a Mini-scale Multi-site Online Simulation Testbed(Mini-MOST) experimental setup is employed.This experimental setup intends to test a two-bay frame structure and it is divided into two experimental modules and one analytical module.During the experiment,these three modules are coordinated by a Matlab-based simulation coordinate program SIMCOR which was developed at the University of Illinois at Urbana-Champaign(UIUC).SIMCOR sends displacement command to each individual module and receives the force response from it,and uses α operator-split(α-OS) method for time integration of structural responses.Experimental results are able to match analytical resutls.This demonstrates that NEESgrid is an effective tool for multi-site pseudo-dynamic sub-structure testing.
引文
[1]邱法维.拟动力实验中的数值积分方法[J].哈尔滨建筑工业学院学报,1994,27(3):121~127.
[2]邱法维.采用隐式积分方法和子结构技术的拟动力实验[J].土木工程学报,1997,30(2):27~33.
[3]Combescure D&Pegon P.Operator splitting tim e integration techn ique for pseudodynam ic testing error propagation analysis[J].Soil Dynam icsand Earthquake Engineering,1997,16:427~443.
[4]Kwon O S et al.A fram ework formu lti-site d istributed simu lation and application to complex structural system s[J].Journal of Earthquake Engi-neering,2005,9(5):741~753.
[5]Nakash ima M et al.Integration techn iques for substructure on line test.Proc.4 th U.S.National Conf.on Earthquake Engineering[C].PalmSpring,CA,II,515~524.
[6]Nakata,N et al.System requ irem ent form in i-MOST experim ent[R].http://www.neesgrid.org/m in i-most/,2004.
[7]Myers,M.User_Mamual[Z].http://www.neesgrid.org/,2005.
[8]G iraldo D,Myers M.M in i-MOST construction specification&D raw ings[Z].http://www.neesgrid.org/m in i-most/M in i_MOST_draw ings.pdf,2004.
[2]邱法维.采用隐式积分方法和子结构技术的拟动力实验[J].土木工程学报,1997,30(2):27~33.
[3]Combescure D&Pegon P.Operator splitting tim e integration techn ique for pseudodynam ic testing error propagation analysis[J].Soil Dynam icsand Earthquake Engineering,1997,16:427~443.
[4]Kwon O S et al.A fram ework formu lti-site d istributed simu lation and application to complex structural system s[J].Journal of Earthquake Engi-neering,2005,9(5):741~753.
[5]Nakash ima M et al.Integration techn iques for substructure on line test.Proc.4 th U.S.National Conf.on Earthquake Engineering[C].PalmSpring,CA,II,515~524.
[6]Nakata,N et al.System requ irem ent form in i-MOST experim ent[R].http://www.neesgrid.org/m in i-most/,2004.
[7]Myers,M.User_Mamual[Z].http://www.neesgrid.org/,2005.
[8]G iraldo D,Myers M.M in i-MOST construction specification&D raw ings[Z].http://www.neesgrid.org/m in i-most/M in i_MOST_draw ings.pdf,2004.
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