永磁摩擦耗能装置结构体系被动控制试验研究

Experimental study on structural passive control of permanent magnet friction energy dissipation device

在已有无能源磁摩擦控制装置性能试验的基础上,根据14五层钢框架模型结构设计制作了永磁摩擦耗能装置。普通摩擦耗能装置出力不可变,而永磁耗能装置的出力为连续可变型。不仅可以实现控制力随结构层间位移改变而增大或减小两种出力模型,而且根据装置初始位置的不同可以改变初始控制力的大小。分别将装置安装在底层柔性结构模型和普通结构模型上进行了地震模拟振动台试验。试验结果表明,永磁摩擦耗能装置用于结构被动控制具有良好的可靠性和适应性,是一种新型、有效的摩擦耗能装置。

Based on the former performance capacity experiments of the permanent magnet friction control(PMF) devices, the PMF energy dissipation devices were designed and made according to a 1:4 five story steel frame model. The controlling force model of the device can be varied continuously, which was different from the commonly used energy dissipation devices whose force models were invariable. It could not only realize the friction controlling force enhancing with the accretion of displacement of structure on each floor or vice versa, but also change the initial controlling force in the light of the initial position of device. The devices were fixed respectively on the flexible first story and the ordinary structure model, and the shaking table tests were carried out. The test results have demonstrated that the PMF energy dissipation device has well reliability and adaptability for passive control, and it is a new kind of effective energy dissipation device.