中文摘要：

为研究隔震桥梁实时混合试验的稳定性和精确性,以加有摩擦摆和粘滞阻尼器的隔震桥的试验室比例模型为研究对象,以粘滞阻尼器为试验子结构,安装摩擦摆的隔震桥为数值子结构,进行实时混合试验,通过考虑摩擦摆的强非线性,理论分析了振幅误差和时滞误差对试验系统稳定性和精确性的影响,最后通过试验验证理论分析结果。理论分析和试验结果都表明,对于加有粘滞阻尼器的隔震桥系统,基于α法的数值积分的实时混合试验系统满足稳定性和精确性要求。具体而言,作动器振幅误差不会影响系统稳定性,仅仅相当于增加或减小系统的阻尼;而作动器时滞小于0.012 s时,系统是稳定的。该研究对于足尺隔震桥的实时混合试验具有相当的指导意义。

英文摘要：

In order to study the stability and accuracy of Real-time hybrid test on isolated bridge,a laboratory scale model assembled with friction pendulum and viscous dampers is analyzed. Theviscous damper is the experiment substructure,and the analytical substructure was comprised of the bridge（ piers,decks） and friction pendulum. The accuracy and stability characteristics of the realtime hybrid test are investigated when there is an amplitude error or time delay in the measured restoring force. Furthermore, the analysis and experimental results show that real-time pseudo dynamic test system based on numerical integration method can meet the stability and accuracy requirements for the isolated bridge system plus viscous dampers. Specifically, the actuator amplitude error does not affect the system stability,but increases or decreases the system damping.Besides,when the actuator delay is less than 0. 012 s,the system is stable. The research has considerable significance in real-time hybrid test of full-scale isolated bridge.