摘要
采用现场实测的方法对上海市崇明岛侯家镇气象站的近地中强度脉动风特性进行分析研究,对紊流强度、阵风因子、紊流积分尺度的统计值与规范结果进行了比较,对水平方向和垂直方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。
Long time observation and corresponding statistic analysis of natural wind at Houjia town weather station of Chongming Island in Shanghai were performed. The turbulent characteristics, including turbulence intensity, gust factor, integral length scales and wind spectrum, were summarized based on a large amount of measured data, and compared with Code ones. By means of fitting some empirical spectra, fittinz spectra were improved with higher precision.
出处
《结构工程师》
2007年第1期56-61,共6页
Structural Engineers
关键词
脉动风
紊流强度
阵风因子
紊流积分尺度
风谱
turbulent wind, turbulence intensity, gust factor, integral length scale, wind spectrum
