复合隔震结构模型振动台试验研究

Study on shaking table test model for composite isolation structures

作者对一个二层复合隔震结构钢框架模型进行了振动台试验,该模型采用夹层橡胶支座与摩擦滑移支座并联组合作为隔震层,既能提供足够的弹性恢复力,又具有良好的结构耗能能力。试验测得结构各项动力响应,并将软件计算数据与试验数据进行了比较,结果表明复合隔震结构的加速度反应小,楼层层间位移也较小,上部结构基本为平动,结构耗能能力显著,而且软件可以很好地模拟结构的地震反应规律。

A two-floor steel-frame model of composite isolation structure is tested to simulate the earthquake action on shaking table. The isolator layer of model is combined by laminated rubber bearings and sliding isolation bear- ings. It can provide sufficient elastic resilience and consume earthquake energy effectually. Structure dynamic re- sponse in the test was compared with that of analysing in the software. It is shown that frame acceleration response and relative storey displacement are both small in composite isolation structure, which can consume large earthquake energy, then it can be reflected by the software analysing.