| 杭州市民中心风特性监测及风谱拟合 |
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| 引用本文： | 郑毅敏,贾京,赵昕.杭州市民中心风特性监测及风谱拟合[J].结构工程师,2009,25(2). |
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| 作者姓名： | 郑毅敏 贾京 赵昕 |
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| 作者单位： | 1. 同济大学建筑设计研究院,上海,200092
2. 同济大学建筑工程系,上海,200092 |
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| 基金项目： | 上海市青年科技启明星计划(B类) |
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| 摘 要： | 通过对作用在杭州市民中心的自然脉动风进行长期连续监测,对湍流强度、阵风因子和湍流积分尺度的统计值进行分析研究.分别采用10 min和1 h的基本时距计算纵向和竖向脉动风速谱,基于各向同性湍流理论推导出横向脉动风速谱,并与经验风谱进行了比较.最后,对纵向和竖向常用的几种功率谱密度函数进行了拟合修正,提出了精度优于常用风谱的谱函数表达式.
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| 关 键 词： | 湍流强度 阵风因子 湍流积分尺度 脉动风速谱 风谱拟合 |
Analysis of Turbulent Wind Characteristic and Fitting of Fluctuating Wind Spectrum of Hangzhou Citizen Center |
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| ZHENG Yimin,JIA Jing,ZHAO Xin.Analysis of Turbulent Wind Characteristic and Fitting of Fluctuating Wind Spectrum of Hangzhou Citizen Center[J].Structural Engineers,2009,25(2). |
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| Authors: | ZHENG Yimin JIA Jing ZHAO Xin |
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| Affiliation: | 1.The Architectural Design & Research Institute of Tongji University;Shanghai 200092;China;2.Department of Building Engineering;Tongji University;China |
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| Abstract: | Long time observation of natural wind imposed on Hangzhou Citizen Center was performed.The turbulence characteristics,including turbulence intensity,gust factor,integral length scales and wind spectrum,were summarized based on a large amount of measured data.Longitudinal and vertical wind spectrumare summarized based on the basic time-distance of 10 minutes and 1 hour,lateral wind spectrum were also summarized based on isotropic turbulence theory,the comparison to the experience wind spectrum was performed.... |
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| Keywords: | turbulence intensity gust factor integral length scale fluctuation wind speed spectrum wind spectrum fitting |
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