ER/MR智能阻尼器耦联的带裙房高层建筑结构地震反应的半主动控制  

Semi - active control for seismic responses of tall building with skirt structure

作　　者：瞿伟廉[1] 王军武[1] 徐幼麟[2] 陈朝晖[3] 

机构地区：[1]武汉理工大学,武汉430070 [2]香港理工大学 [3]深圳大学

出　　处：《地震工程与工程振动》2000年第4期87-95,共9页Earthquake Engineering and Engineering Dynamics

基　　金：国家自然科学基金!(土木工程结构振动的智能控制)

摘　　要：本文建立了用ＥＲ／ＭＲ智能阻尼器耦联的带裙房高层建筑结构地震反应半主动控制的设计计算方法。文中，在导出了ＥＲ／ＭＲ智能阻尼器力学模型的基础上，建立了ＥＲ／ＭＲ智能阻尼器耦联的带裙房高层建筑结构地震反应的基本方程，并根据瞬时最优主动控制的原则，提出了 ＥＲ／ＭＲ智能阻尼器耦联的带裙房高层建筑地震反应半主动控制的基于最优主动控制位移的“开关－耗能”半主动控制策略。应用本文方法对主楼２０层、裙房５层的计算结构受控地震反应的模拟计算结果表明：耦联主楼和裙房的半主动的ＥＲ／ＭＲ智能阻尼器可有效地抑制带裙房高层建筑结构地震反应的鞭梢效应．并可均匀地减小结构各层的地震反应，是一种简单、方便和有效的智能控制装置。This paper presents an analytical method for semi-active control of seismic responses of tall building, whose tower structure and skirt structure are connected to each other with ER/MR dampers. After constructing a rational mechanical model of ER/MR dampers, this paper develops a group of governing equations for semi-active control of structure-damper system. In accordance with the principles of instantaneous optimal active control, an Off-On Energy Dissipation semi-active control algorithm is proposed, which is based upon optimal active control displacement. An earthquake-excited tall building with a 20-story tower structure and a 5-story shirt structure is used to validate the analytical method presented. The results of simulated computation imply that, as a kind of simple and effective intelligent control device, ER/MR dampers can significantly reduce the seismic' whiplash effect' of tall building with skirt structure as well as the seismic responses of whole structure.

关 键 词：ER/MR智能阻尼器 半主动控制 带裙房高层建筑 抗震结构 

分 类 号：TU352.1[建筑科学—结构工程]