摘要
高层建筑结构中由于地震引起的振动有时是十分严重的,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方式。本文首先对近年来出现的各种优化布置方法进行了介绍,然后提出了一种新的基于改进遗传算法和等效二次型性能指标的优化方法,并论述了这些方法的优缺点,最后采用五种优化布置方法并结合一个具体实例进行了磁流变阻尼器的优化布置研究,给出了磁流变阻尼器优化布置的几个原则。
The vibration responses of high-rise building induced by ground motion are very serious. The structural vibration control method using MR dampers can reduce the responses of the structure effectively. 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, five optimal methods are used to determine the number and location of the MR dampers in the structure. Finally, several principles of the optimal placements are pointed out.
出处
《工程抗震与加固改造》
2006年第3期73-78,共6页
Earthquake Resistant Engineering and Retrofitting
基金
国家杰出青年科学基金资助项目(50025823)
辽宁省教育厅科研项目(A类20201056)
辽宁省自然科学基金重大资助项目(2001101006)
关键词
磁流变阻尼器
优化布置
遗传算法
二次型性能指标
magnetorheological damper
optimal placement
genetic algorithm
quadratic performance index
