同济大学学报（自然科学版）2013，Vol.41Issue(8)：1165-1171,7.DOI:10.3969/j.issn.0253-374x.2013.08.008
台风“梅花”近地风剖面变化
Variation of Wind Profiles near Ground During Typhoon "Muifa"
摘要
Abstract
Wind profiles of typhoon ‘Muifa’ are analyzed based on the long-term measured data collected respectively at 10,20,30 and 40 meters high from the ground in Pudong New Area of Shanghai.The height of neutral atmospheric boundary layer(ABL) increases with wind speed.The average height of neutral ABL during typhoon ‘ Muifa’ is 2063 m by calculation,which greatly exceeds the gradient height(350 m) recommended by Chinese National Load Code (GB50009-2001,2002) for open terrain.The stability parameter z/L is almost within [-0.1,0.1] when the wind speed becomes high,which means near-neutral flow.Measured mean wind speed profile agrees well with the power law,the log law and Deaves-Harris ABL model.Based on the expression form in ASCE7-10,the fitting equations of turbulence intensity profiles in longitudinal,lateral and vertical directions are presented.Finally,the formulas for gust factors are also derived using curve-fitting technique,which can provide reference for engineering designing.关键词
台风"梅花"/现场实测/风剖面/湍流度/阵风因子Key words
Typhoon "Muifa"/ field measurement/ wind profiles/ turbulence intensity/ gust factors分类
建筑与水利引用本文复制引用
王旭,黄鹏,顾明..台风“梅花”近地风剖面变化[J].同济大学学报（自然科学版）,2013,41(8):1165-1171,7.基金项目
国家自然科学基金重大研究计划重点项目(90715040) （90715040）
国家自然科学基金面上项目(51178352) （51178352）
