摩擦阻尼器在轻钢结构加层的控制应用  

Aplication of Friction Damper in Seismically Retrofitting Buildings

作　　者：魏文晖[1] 甄茂伟[1] 

机构地区：[1]武汉理工大学土木工程与建筑学院,湖北武汉430070

出　　处：《华中科技大学学报（城市科学版）》2004年第3期22-25,共4页Journal of Huazhong University of Science and Technology

基　　金：国家自然科学基金资助项目(59678046).

摘　　要：采用轻型钢结构加层是对砌体结构加层的一种十分有效的方法.但由于鞭鞘效应,轻型钢结构自身的层间位移较大,常常不能满足设计要求.因此,提出在加层中设置摩擦阻尼器(FRD)支撑,对结构振动进行控制,从而使整体结构满足抗震设防要求的全新技术方法.推导了摩擦阻尼器和人字型支撑的组合层间单元刚度矩阵和控制力向量,建立了设置摩擦阻尼器砌体结构地震反应时程分析的控制方法.To overcome some problems in seismically retrofitting of buildings, using FRD as an effective device for hybrid masonry-concrete structures is proposed so as to meet the requirement of current earthquake-resistant codes of China. Based on the force-displacement-slip equation of frictional element, a precise finite element model of FRD is constructed, and the method of forming element stiffness matrix and control force vector of FRD is deduced. Consequently, a time history analysis method for earthquake-excited damped hybrid masonry-concrete structures is developed.

关 键 词：摩擦阻尼器 轻型钢结构加层 耗能减震 控制力 鞭鞘效应 

分 类 号：TU973.31[建筑科学—结构工程]