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基于近海海面观测的台风黑格比风特性研究
  • 期刊名称：EI: 空气动力学学报 (已录用)
  • 时间：0
  • 分类：TU973.2[建筑科学—结构工程]
  • 作者机构：[1]哈尔滨工业大学深圳研究生院,广东深圳518055, [2]广东省气候中心,广东广州510080
  • 相关基金：国家自然科学基金项目（90715031）;科技支撑计划项目（2006BAJ06805）
  • 相关项目：登陆台风风场及其工程致灾特性研究
关键词： 台风, 风剖面, 指数律, 对数律, 大气边界层, 高层建筑结构抗风设计, typhoon, wind speed profile, power law, log law, atmospheric boundary layer, wind resistant design of tall building
中文摘要：

利用两座风观测塔和一台风廓线雷达对强台风黑格比的实测结果，研究了台风黑格比近地塔层和边界层风剖面特征。结果表明：在近地塔层风剖面，陆地来风时，最大风速高度高于70m，且指数律剖面指数α随着风速的增大而减小；海面来风时，最大风速高度约为50m，指数律剖面指数α随着风速的增大而增大。在边界层风剖面，台风黑格比前眼壁强风区梯度风高度为450m，后眼壁强风区为300m，外风场为200m。指数律和对数律剖面可以用来描述台风黑格比眼壁强风区300m高度以下和外风场200m高度以下的风剖面，但是风剖面参数不符合规范推荐值，D—H模型参数不适合描述其风剖面，需进行修正。

英文摘要：

Using field measured wind data of strong typhoon Hagupit conducted on two wind observed towers and Airda 3000Q wind profile radar, tower-height level typhoon wind profiles and boundary layer typhoon wind profiles are studied. In the tower-height level wind profile, the maximum wind height is higher than 70m, and exponential index a decreases with mean wind speed when wind approaches from land side; while the maximum wind height is about 50m, and exponential index a increases with mean wind speed for onshore wind, In the boundary layer wind profile, the gradient height is 450m in the front eye-wall, 300m in the back eye-wall and 200m in outer-vortex. Log law and power law can be used to describe the typhoon Hagupit profile below 300m height in eye-wall region and 200m in outer-vortex, but the parameters are different from those values recommended in the wind code. Modification is needed for Deaves-Harris ABL model to describe typhoon Hagupit profile.

同期刊论文项目
登陆台风风场及其工程致灾特性研究
期刊论文 71 会议论文 36
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