磁流变阻尼器在受控结构中的优化布置

Optimal placement of MR damper set in structures

高层建筑结构中由于地震引起的结构体系的振动是十分严重的,利用磁流变阻尼器进行振动控制的方法可以有效减小体系的振动反应。这种振动控制的效果,不仅取决于阻尼器出力大小和控制算法的优化,也取决于阻尼器在高层结构中的布置位置。首先对近年来出现的许多优化布置方法进行了阐述,论述了这些方法的优缺点,然后选用了一种优化布置方法并结合一个结构体系进行了阻尼器的优化布置研究,最后给出了阻尼器优化布置的几个原则。研究的结果表明通过阻尼器在高层结构中的优化布置可以有效提高振动控制的效果.

The vibration responses of high-rise building induced by ground motion are very serious. The structural vibration control method using MR dampers can reduce effectively the responses of the structure. The effectiveness of controlling responses depends not only on capacity of MR damper and control algorithm, but also on optimal placement of MR damper. Firstly, some methods of optimal placement are presented and effects of the method are also discussed in this paper. Secondly, an optimal method is used to determine the number and location of the MR dampers in the structure. Finally, several principles of the optimal placements are pointed out. The results of the numerical analysis show that the vibration responses of the structure can be reduced effectively by the optimal placement of MR dampers in the high-rise building.