摘要
实时混合仿真是一种新兴的结构抗震试验方法.建立了一套混合仿真试验系统,其中包括基于OpenSees有限元软件的数值模拟计算机,具有时滞补偿功能的目标计算机以及终端连接的电液伺服控制系统.在MATLAB中建立Simulink数值仿真模型,并提出了一种基于位移预测的自适应前馈时滞补偿器.最后,以一个单层三跨高强钢组合偏心支撑钢框架结构为原型,取边跨带有偏心支撑的单层钢框架作为试验子结构,进行了一个缩尺比例为1/2结构模型的实时混合仿真试验.试验结果表明随着模型整体响应加速度峰值的增大,控制系统的最大时滞补偿误差、最大幅值误差均有增大趋势,但均在容差允许范围之内,同时说明了该混合仿真试验系统具备良好的稳定性和精度,能够有效地对偏心支撑框架子结构结构模型进行抗震性能试验.
Real-time hybrid simulation is a new method of structural seismic test.A hybrid simulation test system is established,which includes the numerical simulation computer based on OpenSees finite element software,the target computer with time delay compensation function and the electro-hydraulic servo control system.Furthermore,the Simulink numerical simulation model is established in MATLAB,and an adaptive feedforward time-delay compensator based on displacement prediction is proposed.Finally,a single story and three span high-strength steel composite eccentrically braced steel frame structure was considered as the prototype,the single story steel frame with the eccentric brace was considered as the test sub-structure,and a real-time hybrid simulation test of a 1/2 scaled model was carried out.The experimental results show that the maximum time-delay compensation error and maximum amplitude error of the system increase with the increase of overall response peak acceleration of the model,but all of them are within the tolerance allowable range.At the same time,the hybrid simulation test system has good stability and accuracy,and can be used to test the seismic performance of the eccentrically braced frame as the test sub-structure.
作者
李腾飞
隋龑
苏明周
张浩
高秀煜
LI Tengfei;SUI Yan;SU Mingzhou;ZHANG Hao;GAO Xiuyu(School of Civil Engineering,Xi′an University of Architecture and Technology,Xi′an 710055,China;Key Laboratory of Structural Engineering and Earthquake Resistance of the Ministry of Education,Xi′an University of Architecture and Technology,Xi′an 710055,China;MTS Systems Corporation,14000 Technology Drive Eden Prairie,MN55344,USA)
出处
《湖南大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2018年第11期46-53,共8页
Journal of Hunan University:Natural Sciences
基金
国家自然科学基金资助项目(51178382)
陕西省教育厅重点实验室项目(16JS048,16JS049)。
