桥梁结构远程协同拟动力试验平台开发
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摘要
基于网络化结构实验室NetSLab系统的通讯功能,开发了梁式桥结构远程协同拟动力试验平台.该平台由控制中心、真实试验机、虚拟试验机3个模块组成.控制中心组织整个试验流程,协调数据通信,并进行整体结构数值分析;真实试验机和虚拟试验机分别采用试验设备和数值模拟来获取试验和计算子结构的恢复力.真实试验机和MTS液压伺服系统之间的通讯采用湖南大学开发的标准ActiveX控件,用于位移指令的发送和试验反馈数据的采集.通过网络通讯速度测试和网络环境调查,结合拟动力试验的特征,建立了可靠的远程协同试验通讯事务处理框架.利用开发的试验平台进行了一系列桥梁结构的远程虚拟协同拟动力试验,验证了该远程混合试验平台的可行性.
A remotely collaborative pseudo-dynamic testing platform for the seismic response simulation of bridge structures under earthquake excitations has been developed based on the communication platform of NetSLab system.The testing platform consists of three types of modules,namely control center,physical tester and virtual tester.The control center organizs the testing procedure,coordinats data communication,and handls numerical integration.The physical tester and virtual tester generate restoring forces of substructure by operating testing facilities and computing resources respectively.A standard ActiveX control,developed in the structural laboratory of Hunan University,was utilized to provide transferring of control signal and feedback data between physical tester and MTS Electro-hydraulic servo system.Based on communication speed tests and the investigation of network environment as well as the characteristic of pseudo-dynamic testing,a reasonable framework for dealing with communication tasks was established. Using the testing platform,a series of virtual hybrid tests of bridge structures under earthquake excitations were carried out.The application of the program was verified well with the results.
A remotely collaborative pseudo-dynamic testing platform for the seismic response simulation of bridge structures under earthquake excitations has been developed based on the communication platform of NetSLab system.The testing platform consists of three types of modules,namely control center,physical tester and virtual tester.The control center organizs the testing procedure,coordinats data communication,and handls numerical integration.The physical tester and virtual tester generate restoring forces of substructure by operating testing facilities and computing resources respectively.A standard ActiveX control,developed in the structural laboratory of Hunan University,was utilized to provide transferring of control signal and feedback data between physical tester and MTS Electro-hydraulic servo system.Based on communication speed tests and the investigation of network environment as well as the characteristic of pseudo-dynamic testing,a reasonable framework for dealing with communication tasks was established. Using the testing platform,a series of virtual hybrid tests of bridge structures under earthquake excitations were carried out.The application of the program was verified well with the results.
引文
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[2]PAUSCHKE J,ANDERSON T L,GOLDSTEIN S N,et al.Construction status of the George E.Brown Jr.network forearthquake engineering simulation[C]//Proceedings of the Sev-enth U S National Conference on Earthquake Engineering.Boston,USA,2002.
[3]STOJIADINOVIC B,MOSQUEDA G,MAHIN S A.Event-driven control system for geographically distributed hybrid simula-tion[J].Journal of Structural Engineering,ASCE,2006,132(1):68-77.
[4]KIM J K.KOCED collaboratory program[C]//ANCER AnnualMeeting:Networking of Young Earthquake Engineering Re-searchers and Professionals.Hawaii,USA,2004.
[5]YANG Y S,WANG K J,WANG S J,et al.Networked pseudo-dynamic testing partⅠ:database approach[J].Earthquake Engi-neering and Structural Dynamics,2007,36(15):2291-2306.
[6]WANG S J,WANG K J,YANG Y S,et al.Networked pseudo-dy-namic testing partⅡ:application protocol approach[J].EarthquakeEngineering and Structural Dynamics,2007,36(15):2307-2323.
[7]PARK D U,YUN C B,LEE J W,et al.On-line pseudo-dynamicnetwork testing on base-isolated bridges using internet and wire-less internet[J].Experimental Mechanics,2005,45(4):331-343.
[8]PAN P,TADA M,NAKASHIMA M.Online hybrid test by in-ternet linkage of distributed test-analysis domains[J].EarthquakeEngineering and Structural Dynamics,2005,34(11):1407-1425.
[9]PAN P,TOMOFUJI H,WANG T,et al.Development of peer-to-peer(P2P)internet online hybrid test system[J].EarthquakeEngineering and Structural Dynamics,2006,35(7):867-890.
[10]肖岩,胡庆,郭玉荣,等.结构拟动力远程协同试验网络平台的开发研究[J].建筑结构学报,2005,26(3):122-128.XIAO Yan,HU Qing,GUO Yu-rong,et al.A network plat-form for remote pseudo-dynamic testing[J].Journal of BuildingStructures,2005,26(3):122-128.(In Chinese)
[11]郭玉荣,张国伟,肖岩,等.单自由度结构远程分析及拟动力试验平台[J].湖南大学学报:自然科学版,2006,33(2):18-21.GUO Yu-rong,ZHANG Guo-wei,XIAO Yan,et al.A platformfor remote analysis and pseudo dynamic testing of SDOF struc-tures[J].Journal of Hunan University:Natural Sciences,2006,33(2):18-21.(In Chinese)
[12]谢旭.桥梁结构地震响应分析与抗震设计[M].北京:人民交通出版社,2006:169-172.XIE Xu.Seismic response and earthquake resistant design ofbridges[M].Beijing:China Communications Press,2006:169-172.(In Chinese)
[13]邱法维,钱嫁茹,陈志鹏.结构抗震实验方法[M].北京:科学出版社,2000:84-86.QIU Fa-wei,QIAN Jia-ru,CHEN Zhi-peng.Seismic testmethodology for structures[M].Beijing:Science Press,2000:84-86.(In Chinese)
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