基于磁流变液阻尼杆件的空间网壳风振半主动控制  

Semi-Active Control for Wind-Induced Vibration of Spatial Reticulated Structure with MR Dampers

作　　者：黄橙[1] 周岱[1] 马骏[1] 

机构地区：[1]上海交通大学船舶海洋与建筑工程学院,上海200240

出　　处：《上海交通大学学报》2008年第6期961-965,共5页Journal of Shanghai Jiaotong University

基　　金：国家自然科学基金资助项目(10572091);上海市基础研究重点项目(07JC14023)

摘　　要：对基于磁流变液阻尼杆件的空间网壳结构风振控制问题进行研究.将磁流变液阻尼器与网壳结构杆件结合,形成智能构件空间网壳结构.利用Bingham粘塑性模型描述磁流变液阻尼器的性能,采用Bang-Bang半主动控制算法,提出结构的广义弹性能和广义动能作为评价结构控制效果的指标.对一局部双层凯威特球面网壳结构,采用上层双十字交叉方案布置磁流变液阻尼器,并开展数值计算.结果表明,采用广义弹性能和广义动能指标可较好地反映对结构风振控制的效果.The wind-induced vibration control of spatial reticulated shell structure（SRSS） with the magne torheological-fluid （MR） damper members was studied. Bingham model was used to describe the mechanical behavior of MR dampers and a semi active control algorithm was adopted. Generalized elastic energy and generalized kinetic energy were suggested to measure the wind-induced vibration control effect for SRSS. A partial double layer spherical Kiewitt SRSS with double crossing arrangement of MR dampers was used as the numerical model. It is shown that the vibration control effect can be described reasonably by means of the generalized elastic energy and generalized kinetic energy.

关 键 词：大跨度空间结构 网壳结构 磁流变液阻尼器 风振 半主动控制 

分 类 号：TU393.3[建筑科学—结构工程]