用实时拟动力试验方法研究滑移摩擦隔震系统的可行性

英文篇名：Feasibility of Research on Slipping Friction Seismic Isolation System with Real Time Pseudo-Dynamic Test
中文刊名：建筑科学
英文刊名：Building Science
作者：张玉敏 ; 葛楠 ; 苏经宇 ; 苏幼坡
英文作者：ZHANG Yu-min1 ; 2 ; 3 ; GE Nan2 ; 3 ; SU Jing-yu1 ; SU You-po2 ; 3(1.College of Architecture and Civil Engineering ; Beijing University of technology ; Beijing 100022 ; China ; 2.College of Civil and Architectural Engineering ; Hebei Polytechnic University ; Tangshan 063009 ; Hebei ; China ; 3.Earthquake engineering research center of Hebei Province ; Tangshan 063009 ; Hebei ; China)
中文关键词：拟动力试验 ; 实时加载 ; 滑移摩擦 ; 插值 ; 作动器
英文关键词：pseudo-dynamic test ; real time loading ; slipping friction ; interpolation ; actuator
出版日期：2012-03-20
机构：北京工业大学;河北联合大学;河北省地震工程研究中心;
年：2012
期：03
出版单位：建筑科学

摘要

用数值计算分析了采用实时拟动力试验方法研究滑移摩擦隔震装置的可行性。重点考察了拉格朗日插值方法对作动器位移与速度精确度的影响。通过对一个七个自由度结构模型设置滑移摩擦隔震支座动力反应时程的分析可知,用实时拟动力试验系统研究滑移摩擦类隔震结构是可行的。通常当Δt=0.01s,δt=0.001s时,SGT外插值运算的次数不应超过五次,内插值的运算次数可以不受限制。宜采用三阶拉格朗日插值计算公式,以控制动力反应速度失真及突变速度的大小。在进行实时拟动力试验时必须考虑作动器系统位移滞后的影响,标定滞后时段长度,并在编制控制程序时予以补偿。
A numerical investigation was carried out to analyze the feasibility of research work for the slipping frication seismic isolation system with real time pseudo-dynamic test.Most of the work was concentrated on the influence of Lagrange interpolation method on the accuracy of actuator velocity.It is shown that through analysis in time history of dynamic response on a 6 DOF structural model the research work is feasible.In general,when Δt=0.01 and δt=0.001,the number of extrapolation should not be larger than 5,while the number of interpolation is not restricted.The 3rd Lagrange interpolation is suggested to be used in order to alleviate the velocity distortion and the sudden velocity conversion.The actuator delay should be compensated in programming based on the delay calibration.

引文

[1]邱法维.联机结构试验中的子结构技术及其应用[J].实验力学,1995,10(4):335～342.
    [2]陈瑜.建筑结构双向拟动力试验的程序控制[J].建筑科学,1990(1):61～68.
    [3]卢铁鹰,陈思田.MTS电液伺服结构试验系统进行结构拟动力试验的控制程序研究[J].工程力学,1990,7(3):127～131.
    [4]P.B.Shing and S A Mahin.Computational Aspect of a SeismicPerformance Test Method Using On-line Computer Control[J],Earthquake Engineering and Structural Dynamics,1985,13(4):507～526.
    [5]M.Nakashima.Part I:Relationship between Integration Timeinterval and Response Stability in Pseudo-dynamic Testing[J].Journal of Structural Construction Engineering.AIJ,1985(353):29～34.
    [6]M.Nakashima.Part II:Relationship between Integration Timeinterval and Response Stability in Pseudo-dynamic Testing[J].Journal of Structural Construction Engineering.AIJ,1985(353):35～41.
    [7]肖岩,胡庆,郭玉荣,易伟建,朱平生.结构拟动力远程系统试验网络平台的开发研究[J].建筑结构学报,2005,26(3):122～129.
    [8]吴斌,保海娥.实时子结构实验Chang算法的稳定性和精度[J].地震工程与工程振动,2006,26(2):41～48.
    [9]李进,王焕定,张永山,赵桂峰.高阶单步实时动力子结构实验技术研究[J].地震工程与工程振动,2005,25(1):97～101.
    [10]袁涌,朱宏平,熊世树.运用新型实时子结构实验验证橡胶隔震垫的隔震效果[J].防灾减灾工程学报,2007,27,Suppl:378～382.
    [11]Masayoshi Nakashima,Nobuakimasaoka.Real time on-line testfor MDOF systems[J].Earthquake Engineering and structuraldynamics,1999(28):393～420.
    [12]葛楠,苏幼坡,王兴国,周锡元.竖向刚度对FPS滑移摩擦摆系统隔震性能的影响[J].工程抗震与加固改造,2010,32(4):20～25.