摘要
为了深入了解台风风场特性,文中基于某大跨度悬索桥台风风场监测,对台风“梅花”风场特性的相关监测数据进行分析,具体包括:平均风速风向、湍流强度、脉动风速谱、湍流积分尺度、脉动风速空间相关性以及脉动风速的时频特性。结果表明,台风“梅花”的脉动风谱与Von-Karman谱吻合良好;脉动风速具有较显著的非平稳性;台风风场受当地地理环境的影响而呈现出显著的非均匀特性。
In order to deeply understand the characteristics of the real typhoon wind field,based on the typhoon wind field monitoring system of a long-pan bridge suspension bridge,the relevant monitoring data of typhoon‘Muifa’wind field characteristics are analyzed in detail.The analysis contents include:average wind speed and direction,turbulence intensity,fluctuating wind speed spectrum,turbulence integral scale.The results show that the fluctuating wind spectrum of typhoon‘Muifa’is in good agreement with the Von-Karman spectrum.The fluctuating wind speed has significant non-stationarity.In addition,the typhoon wind field shows significant non-uniform characteristics due to the influence of local geographical environment.
作者
朱强
金耀
王俊博
李亚华
ZHU Qiang;JIN Yao;WANG Junbo;LI Yahua(CCCC Highway Planning and Design Institute Co.,Ltd.,Beijing 100088,China)
出处
《交通科技》
2023年第2期73-77,84,共6页
Transportation Science & Technology
关键词
风场特性
平均风速风向
湍流强度
脉动风速谱
湍流积分尺度
wind field characteristics
average wind speed and direction
turbulence intensity
fluctuating wind speed spectrum
turbulence integral scale
