滚动碰撞式TMD碰撞性能试验研究及其对高层建筑的风振控制

Experimental Study on Impact Performance of PTRMD and Its Wind-induced Vibration Control for High-rise Buildings

对课题组提出的PTRMD阻尼器中的碰撞问题进行了理论和试验研究。引入非线性粘弹性碰撞模型,建立了考虑PTRMD非线性碰撞耗能的受控结构动力方程。根据PTRMD阻尼器工作原理,设计并制作了摆锤式碰撞试验装置,进行了多种工况下的碰撞试验,得到了贴有粘弹性材料限位挡板的碰撞力学参数。研究了不同释放距离和所贴粘弹性材料厚度对碰撞力学参数的影响,同时对所用碰撞模型进行了试验验证,结果表明,所用碰撞模型是合理的,可以用于PTRMD的减振分析中。最后,根据文中推导的PTRMD控制方程以及试验获得的粘弹性材料挡板碰撞力学参数,对PTRMD在高层建筑风致振动中的控制进行了研究,结果表明该装置对结构的风振响应有较大程度的控制作用,减振效果明显。

The collision problem in PTRMD damper proposed by our research group was studied theoretically and experimentally.The nonlinear viscoelastic collision model was introduced to establish the dynamic equation of the controlled structure with PTRMD damper considering nonlinear collision energy dissipation.According to the working principle of PTRMD,apendulum impact test device was designed and manufactured.The impact tests under various working conditions were carried out,and the impact mechanical parameters of viscoelastic material baffle were obtained.The effects of different release distances and the thickness of viscoelastic materials on the collision performance are studied and the collision model is verified by experiment.The results show that the collision model is reasonable and can be used in the vibration reduction analysis of PTRMD.Finally,according to the PTRMD control equation derived and the impact mechanical parameters of viscoelastic material baffle obtained from the test,the control of PTRMD in the wind-induced vibration of high-rise buildings is studied.The results show that the device can control the wind-induced vibration response of the structure to a great extent,and the vibration reduction effect is obvious.