巨-子型有控结构在脉动风载作用下的时程分析  

Analysis of Mega-sub Controlled Structure Based on Time-domain Under Stochastic Wind Loads

作　　者：张洵安[1] 刘新爱[1] 

机构地区：[1]西北工业大学力学与土木建筑学院,陕西西安710072

出　　处：《河南科技大学学报（自然科学版）》2008年第4期73-76,共4页Journal of Henan University of Science And Technology:Natural Science

基　　金：西北工业大学科技创新基金(M450211)

摘　　要：为进一步对巨-子型有控结构的动力特性进行分析,采用AR模型方法,首先对考虑空间相关性影响的水平脉动风速作了模拟。为弥补频域分析的缺陷,采用时程分析法求解巨-子型有控结构的风振响应,结果表明:巨-子型有控结构是一种有效的结构形式,与一般巨型框架结构相比能显著降低结构的风振响应,具有极大的工程应用前景。In order to investigate the dynamic characteristics of mega-sub structure under random wind loads,the auto-regressive model is applied to simulate pulse wind velocity,and the time history of pulse wind load varying along with the space positions has been concisely imitated.Based on time-domain instead of frequency domain which can't reflect the response directly,a new mega-sub controlled structure with additional columns is calculated.The result indicates that the new controlled mega-sub structure can reduce the wind response evidently compared with normal mega-frame structures,which may be a new type of promising system in practical project.

关 键 词：巨-子型有控结构 AR时程模拟 时程分析 响应 动力特性 

分 类 号：TU311.3[建筑科学—结构工程] TU352.2