基于速度控制型子结构实验的橡胶隔震支座性能研究  

RUBBER BEARING PERFORMANCE BASING ON A REAL-TIME SUBSTRUCTURE HYBRID LOADING TEST WITH VELOCITY CONTROL

作　　者：袁涌[1,2] 熊世树[1,2] 青木徹彦 

机构地区：[1]华中科技大学土木工程与力学学院,武汉430074 [2]华中科技大学控制结构湖北省重点实验室,武汉430074 [3]日本爱知工业大学,日本爱知县丰田市470-0392

出　　处：《振动与冲击》2008年第6期151-154,共4页Journal of Vibration and Shock

基　　金：国家自然科学基金项目(50708041)

摘　　要：主要研究基于速度控制法的实时子结构实验控制系统,并通过该系统完成橡胶隔震支座对桥梁结构隔震效果的实验研究。在本实验系统中,运用高速数字信号处理器(DSP)对A/D、D/A进行信号的实时采集、传输与控制,使控制与计算程序简洁化、实验过程连续,有效地减少了时滞误差;而基于速度的控制又尽可能地反映出新型高阻尼橡胶隔震支座的速度相关性,提高了实验精度;同时在实验系统中采用Operator splitting(OS)数值积分法,使分析程序的稳定性,不再受到时间步长的限制。Development of a real-time substructure hybrid loading test system based on velocity control concept is studied.A series of real-time hybrid loading tests on velocity-dependent rubber bearings are conducted by using the test system.The developed components of the loading test system include: a real-time test control algorithm using velocity control concept,a PC-DSP control system framework for the actuator signal processing,and the operator splitting(OS) used as the numerical time domain integration scheme.The operator splitting analysis method avoids the complex programming and time lag.So,the development of the real-time substructure hybrid loading test system successfully pursues accurate prediction for dynamic responses and isolation effects of rubber bearings under realistic earthquake conditions.

关 键 词：实时子结构实验 速度控制法 橡胶隔震支座 高速数字信号处理器 

分 类 号：TU317[建筑科学—结构工程]