[1]张传雄,王艳茹,黄张琦,等.台风“玛莉亚”作用下风场结构特征现场实测研究[J].自然灾害学报,2019,28(04):100-110.[doi:10.13577/j.jnd.2019.0411]
 ZHANG Chuanxiong,WANG Yanru,HUANG Zhangqi,et al.Field measurement study on wind structure characteristics of specific topography under typhoon Maria[J].,2019,28(04):100-110.[doi:10.13577/j.jnd.2019.0411]
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台风“玛莉亚”作用下风场结构特征现场实测研究
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《自然灾害学报》[ISSN:/CN:23-1324/X]

卷:
28
期数:
2019年04期
页码:
100-110
栏目:
出版日期:
2019-08-28

文章信息/Info

Title:
Field measurement study on wind structure characteristics of specific topography under typhoon Maria
作者:
张传雄1 王艳茹1 黄张琦2 李正农3 王澈泉3
1. 温州大学 瓯江学院, 浙江 温州 325035;
2. 浙江大学 物理学系, 浙江 杭州 310000;
3. 湖南大学 建筑安全与节能教育部重点实验室, 湖南 长沙 410082
Author(s):
ZHANG Chuanxiong1 WANG Yanru1 HUANG Zhangqi2 LI Zhengnong3 WANG Chequan3
1. Oujiang College, Wenzhou University, Wenzhou 325035, China;
2. Department of Physics, Zhejiang University, Hangzhou 310000, China;
3. Key Laboratory of Building Safety and Efficiency of the Ministry of Education, Hunan University, Changsha 410082, China
关键词:
台风风廓线边界层高度指数律相关性
Keywords:
typhoonwind profileboundary layer heightexponential lawcorrelation
分类号:
TU973.3+2;X43;X9
DOI:
10.13577/j.jnd.2019.0411
摘要:
研究台风下不同环境风场结构特征变化规律对分析建筑结构的风效应和防灾减灾具有重要的指导意义。本文基于2018年8号台风"玛莉亚"过境时温州实测点A多普勒声雷达及实验楼B屋顶风速仪的风速实测数据,依据对数、指数和D-H模型理论,运用统计学的积差法及假设检验方法进行相关性分析,并对实测点A水平及竖向风剖面曲线进行变化规律探索,分析总结得到如下结论:不同地貌类型下高度相同两个相距6.21km实测点的水平平均风速及风向线性变化具有高度相关性,风速越大、时段越短,则相关性越强;水平方向风剖面拟合曲线在影响期与指数律模型相当接近,在稳定期则趋于D-H模型,风剖面拟合粗糙度指数a随水平平均风速的增加而减小;由风廓线样本计算获得的边界层高度平均值为1 421 m,较荷载规范取值及良态风计算值分别增大3.06倍、1.78倍;相对水平方向,竖直方向平均速度变化激烈,竖向风廓线指数律拟合指数随竖向平均速度的增加而增大。
Abstract:
Based on the measured wind speed data of a Doppler sodar in the observation point A and an anemometer at the top of the experimental building B in Wenzhou under typhoon Maria in 2018.According to logarithmic law, exponential law, D-H model theory and hypothesis testing methods in statistics,we studied the variations of the horizontal and vertical wind profile curves and came to the following conclusion. Firstly, the linear regression analysis of mean wind speed on two measured points at same height with a distance of 6.21km under different landscape achieved highly correlation.The faster the wind speed and the shorter the period is, the higher the correlation is. Secondly, the horizontal wind profile fitting curve is quite close to the exponential law model in the influence period and tends to the D-H model in the stable period.The fitting roughness index of wind profile decreases significantly with the increasing of the average of horizontal wind speed. Thirdly, the mean value of the height of the boundary layer obtained from the calculation of the wind profile sample is 1421 meters, which is 3.06 times more than the standard value and 1.78 times more than the calculation value of normal wind. Lastly, the average of velocity in the vertical direction varies intensely compared to that in the horizontal direction.The fitting roughness index of wind profile increases with the increasing of the average of the vertical meanspeed.

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备注/Memo

备注/Memo:
收稿日期:2018-12-02;改回日期:2019-03-28。
基金项目:国家自然科学基金项目(51678455,51508419)
作者简介:张传雄(1965-),男,副教授,博士,主要从事结构抗风方面的研究.E-mail:Zhangcx@wzu.edu.cn
通讯作者:王艳茹(1982-),女,副教授,博士,主要从事结构抗震抗风方面的研究.E-mail:94286723@qq.com
更新日期/Last Update: 1900-01-01