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复杂高耸结构风振响应研究
引用本文:禹慧,马人乐,何敏娟.复杂高耸结构风振响应研究[J].上海力学,2008,29(3).
作者姓名:禹慧  马人乐  何敏娟
作者单位:同济大学建筑工程系,上海200092
摘    要:本文提出了基于高频动态测力天平试验的风振响应的频域分析方法,采用该方法可以用来求解复杂高耸结构的三维耦联风振响应,并给出了利用高频动态测力天平试验来确定广义模态力谱的计算方法.该方法利用高频动态测力天平试验得到的基底剪力自谱、基底弯矩自谱以及基底剪力与弯矩的互谱与脉动风荷载的自谱密度的相互关系并通过引入振型修正系数来求得广义模态力谱,求解结构的三维耦联风振响应.然后,采用本文方法对在建的河南省广播电视发射塔的风振响应进行了研究,结果表明横风向的位移和加速度响应的均方根值要大于顺风向,因此在计算中必须考虑横风向风振的影响.最后本文对计算振型数目和模态耦联项对结构风振响应的影响进行了分析.本文的方法对于求解复杂高耸结构的风振响应具有重要的借鉴意义.

关 键 词:复杂高耸结构  高频测力天平试验  风振响应

Analysis of Wind Induced Vibration Response for Complex High Rising Structures
YU Hui MA Ren-le HE Min-juan.Analysis of Wind Induced Vibration Response for Complex High Rising Structures[J].Chinese Quarterly Mechanics,2008,29(3).
Authors:YU Hui MA Ren-le HE Min-juan
Institution:Department of Building Engineering;Tongji University;Shanghai 200092;China
Abstract:The frequency analysis method based on high frequency force balance method(HFFB)measure- ment to calculate wind-induced vibration response was introduced.This method can be utilized to calculate the wind-induced three dimensional coupled response.Based on high frequency force balance method (HFFB)measurement the method was presented,by which power spectral density(PSD)of mode general- ized force was obtained.By means of the relations of power spectral density(PSD)of wind load and power spectral density(PSD)...
Keywords:complex high rising structures  high frequency force balance experiment  wind induced vibration response  
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