基于GMM的空间网壳结构地震响应优化控制方法与试验研究  

Seismic response optimization control and experimental study on spatial latticed structure based on GMM

作　　者：代建波[1] 王社良[2] 赵祥[2] 

机构地区：[1]西安石油大学机械工程学院,西安710065 [2]西安建筑科技大学土木工程学院,西安710055

出　　处：《振动与冲击》2015年第18期129-135,共7页Journal of Vibration and Shock

基　　金：国家自然科学基金资助项目(51178388;61405385);陕西省重点实验室访问学者项目(14JS045);西安石油大学青年科技创新基金项目(2013BS024)

摘　　要：针对地震作用下空间网壳结构的受力和变形特点,以超磁致伸缩材料为核心元件研发了适合于空间网壳结构主动控制的超磁致伸缩主动杆件,并对其进行了磁-力耦合性能测试。基于遗传算法这一先进的优化方法,对空间网壳结构中超磁致伸缩主动杆件的布置位置进行了优化设计,并通过典型算例数值模拟及一个层网壳模型结构的振动台试验进行了优化控制效果的验证与分析。结果表明,超磁致伸缩主动杆件具有良好的作动效应,提出的优化控制方法能够较好地提高空间结构主动控制的效率,表明文中研发的超磁致伸缩主动杆件及提出的优化控制方法是有效的,能够高效、经济的实现对结构进行主动控制的目的。In consideration of the stress and deformation characteristics of a spatial latticed structure under earthquakes, giant magnetostrictive material （GMM） was adopted as the main component to design a kind of new GMM active rod for active vibration control of the spatial latticed structure, and its output performance test was carried out. The genetic algorithm was used to optimize the location of GMM active rods in the spatial latticed structure, and the optimization results were analyzed and confirmed by the numerical simulation of a typical example and the earthquake simulation shaking table test of a Kiewit shell model structure. The result shows that the GMM active rod has fine actuation effect and the optimal control method proposed can improve the efficiency of spatial structure active vibration control. It also shows that the GMM active rods with the optimal control method are effective, and the active control of the structure can achieve higher efficiency and better economy.

关 键 词：空间网壳结构 地震响应 超磁致伸缩主动杆件 优化控制 振动台试验 

分 类 号：TU399[建筑科学—结构工程]