结构抗震拟动力试验中的数据遥控同步采集技术及其实现
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摘要
土木结构抗震实验系统由电液伺服加载设备与数据采集仪两部分组成.加载实验机的控制数据保存在其控制器中,其它测试数据则保存在数据采集仪中.电液伺服试验机中加入数字命令控制模块,联机遥控触发数采仪的试验系统,将信号采集、程序计算和命令控制同步完成,加快了实验进程,解决了实验数据采集记录的不同步问题.以火电厂框排架混合结构拟动力实验为例,详细说明了基于数字命令控制实验系统联机运行的建立方法和试验流程.
Civil experimental system consists of electric-hydraulic servo-controlled testing machine and the data logger with the test data stored respectively.With the digital command control module in servo controller,a exterior trigger signal is used to remote control the data logger,and the data recording synchronously were solved by on-line processing,which quickened the testing speed by making program calculation and command control completed simultaneously.The operation establishment method and test process based on digital command control for on-line test for hybrid structure of thermal power plant were described,which realizes the pseudo-dynamic test automatically.
Civil experimental system consists of electric-hydraulic servo-controlled testing machine and the data logger with the test data stored respectively.With the digital command control module in servo controller,a exterior trigger signal is used to remote control the data logger,and the data recording synchronously were solved by on-line processing,which quickened the testing speed by making program calculation and command control completed simultaneously.The operation establishment method and test process based on digital command control for on-line test for hybrid structure of thermal power plant were described,which realizes the pseudo-dynamic test automatically.
引文
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[2]HAKUNO M,SHIDOWARA M,HARA T.Dynamic destructive test of a cantilevers beam controlled by an analogcomputer[J].Transactions of the Japan Society of Civil Engineering,1969(171):596-608.
[3]郭昕.地震作用下多自由度结构拟动力实验方法研究[D].西安:西安建筑科技大学,2005.5.GUO Xin.Pseudo-dynamic testing method for MDOF structures[D].Xi′an:Xi′an University of Architecture and Technology.2005.5.
[4]邱法维,国明超,李暄.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.QIU Fa-wei,GUO Ming-chao,LI Xuan.Pseudo-dynamic experiment method with computer control[J].Earth-quake Engineering and Engineering Vibration,1994.14(3):91-96.
[5]李青宁,李晓蕾,阎艳伟.结构动力方程精细时程积分法的几种改进[J].西安建筑科技大学学报:自然科学版,2009,41(1):6-10.LI Qing-ning,LI Xiao-lei,YAN Yan-wei.Improvements on the structural dynamic equation precise time-integra-tion[J].J.Xi′an Univ.of Arch.&Tech.:Natural Science Edition,2009,41(1):6-10.
[6]王秉钧,孙学军,王少勇,等.现代通信系统原理[M].天津:天津大学出版社.2003.WANG Bing-jun,SUN Xue-jun,WANG Shao-yong,et al.Principles of modern communication systems[M].Tianjing:Tianjin University Press.
[7]TOKYO Sokki.Operation Manual of Data Logger TDS-602[G].Tokyo:Tokyo Sokki Kenkyujo Co.,Ltd.2010.6.
[8]白国良,康灵果,李红星,等.大型火力发电厂钢筋混凝土框排架结构抗震性能拟动力试验研究[J].西安建筑科技大学学报:自然科学版,2005,37(4):496-500.BAI Guo-liang,KANG Ling-guo,LI Hong-xing,et al.Pseudo-dynamic study on seismic behavior of R.C.frame-bent structures in thermal power plants[J].J.Xi′an Univ.of Arch.&Tech.:Natural Science Edition,2005,37(4):496-500.
[9]白国良,李红星,白涌滔,等.火电厂RC分散剪力墙-SRC框排架滞回性能试验研究与分析[J].土木工程学报,2011,44(8):59-65.BAI Guo-liang,LI Hong-xing,BAI Yong-tao,et al.Experimental study and analysis of the hysteretic behavior of the RC scattered shear wall-SRC frame-bent structures for thermal power plant[J].China Civil Engineering Jour-nal,2011,44(8):59-65.
[10]郑山锁.动力试验模型在任意配重条件下与原型结构的相似关系[J].工业建筑,2000,30(3):35-39.ZHENG Shan-suo.Analogical ratio between scales models with less ballast and their prototypes under shaking ta-ble test[J].Industrial Construction,2000,30(3):35-39.
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