结构随机风振响应分析的复模态法  

A complex mode method to aualyse the random wind vibration response of the structure

作　　者：李暾[1] 李创第[2] 章本照[1] 邹万杰[2] 黄天立[2] 

机构地区：[1]浙江大学力学系,浙江杭州310027 [2]广西工学院土木系,广西柳州545006

出　　处：《广西工学院学报》2002年第4期14-17,22,共5页Journal of Guangxi University of Technology

基　　金：广西青年科学基金 (0 0 0 70 0 9);同济大学防灾国家重点实验室访问学者基金联合资助

摘　　要：对单自由度结构的随机风振响应问题进行了研究。首先建立运动方程 ,并用线性滤波过程生成脉动风谱 ,用复模态理论和扩阶法进行解耦 ,获得了等效风谱对应的结构风振响应的解析解 ,从而建立了结构风振响应分析的复模态法。该方法可用于带 TMD和 TLThe paper studies the random wind vibration response of the structure.Then kinematic equations are established,and the pulsating wind spectrum results from the linear filtering process.The solution of couple is obtained by the complex mode theory and expanding rank method,and the analyzing solution is gained of the wind vibration response of the structure which is relevant to the equivalent wind spectrum so that the complex mode method to analyse the wind vibration rsponse of the structure is established.The method may be applied to the analysis of wind vibrations and optimum designing of the structures wilh TMD and TLD.

关 键 词：随机风振响应 复模态 扩阶法 单自由度结构 

分 类 号：TU311.3[建筑科学—结构工程] O324[理学—一般力学与力学基础]