高耸钢塔结构风振响应分析  

The Analysis of Wind-induced Vibration Response of High Rise Steel Tower

作　　者：曹丽珍[1] 

机构地区：[1]同济大学建筑工程系,上海200092

出　　处：《四川建材》2014年第4期59-62,共4页Sichuan Building Materials

摘　　要：本文首先介绍了风荷载模拟基本理论,并按Davenport风速谱理论,借助数值分析软件MATLAB编制谐波叠加法程序,模拟了场地上不同高度处具有空间相关性的钢塔结构的脉动风荷载时程曲线。在模型降阶的基础上,将模拟得到的风荷载时程加到模型上,利用Newmark-β方法进行风振响应时域计算,通过SAP2000有限元软件模拟计算得到结构的风振响应。In this paper, according to Davenport winds pectrum theory, with numerical analysis software MATLAB simulation of the preparation of the super position of harmonic drive curves at different heights steel tower structure with a spatial correlation of fluctuating wind loads on thevenue. On the basis of model reduction, based on the simulated wind loading process when applied to themodel, using Newmark - β method of calculating the time - domainresponse of wind - induced vibration, wind vibration response of structure.

关 键 词：脉动风模拟 谐波叠加法 Newmark-β方法 动力时程分析 

分 类 号：TU391[建筑科学—结构工程]