基于凝聚技术的结构抗震混合试验原理

基于自由度凝聚技术导出了适于结构构件或子结构抗震混合试验的动力学方程,提出在子结构连接边界进行质量修正与刚度修正,同时给出了连接边界处的拟动力位移加载模式与力加载模式。分别用Guyan法、Kuhar法、SEREP法和IRS法进行了算例的数值模拟分析,比较了不同凝聚方法间的差异,并验证了凝聚技术应用于结构抗震混合试验的可行性。

Hybrid Test Method Based on System Reduction

In this paper,the dynamic equition for sub-structure hybrid test is deduced based on system reduction.It shows that the mass and stiffness should be modified at the boundary,also the application of force or displacement time history of pseudo-dynamic actuator is put forward.Numerical analyses are carried out according to different system reduction technique,such as Guyan,Kuhar,SEREP and IRS,the feasibility of hybrid test theory is verified,and the differences among these reductions are compared.