Modelling of Wind for Structural Load Combinations

结构荷载组合的风建模

• 批准号: 8706844
• 负责人: Richard Bennett
• 金额: $ 3.05万
• 依托单位: University of Tennessee Knoxville
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1987
• 资助国家: 美国
• 起止时间: 1987-07-01 至 1988-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8706844&HistoricalAwards=false
• 关键词: Modelling; Wind; Structural; Load; Combinations

Original wind speed records in the form of continuous gust strip charts are examined to develop pertinent statistics of wind speeds for use in existing probabilistic load combination methods. The wind is modelled as a square wave Poisson pulse process. The statistics obtained are expected frequency of structurally significant wind speeds, mean duration of wind speed, and the probability distribution of the mean wind speed during an occurrence. The statistics are verified by comparing extreme wind statistics obtained from the developed model with those obtained previously by other researchers. Various sites from across the contiguous U.S. are used in the development of the statistics. Results from this work will contribute to improve mapping and gust criteria for structures design, and will be useful in structural reliability modeling.

检查连续阵风带状图形式的原始风速记录，以开发相关的风速统计数据，用于现有的概率载荷组合方法。 风被建模为方波泊松脉冲过程。 获得的统计数据包括具有结构意义的风速的预期频率、风速的平均持续时间以及发生期间平均风速的概率分布。 通过将开发模型获得的极端风力统计数据与其他研究人员之前获得的数据进行比较来验证统计数据。 统计数据的开发使用了美国各地的各个站点。 这项工作的结果将有助于改进结构设计的绘图和阵风标准，并将有助于结构可靠性建模。