典型台风登陆过程平均风时距转换系数分析

发布时间：2018-07-31 10:41

【摘要】：为掌握中国东南沿海台风登陆过程近地面风速变化规律及影响因素,根据2005年浙江省东海塘观测塔和上海市芦潮港观测塔分别实测得到的2次典型强台风(麦莎(Matsa 0509)和卡努(Khanun 0515))登陆时段距地面10 m高度处的实时风速记录资料,计算了不同时距风速的转换系数及其概率分布.计算结果表明,风速时距转换系数服从广义极值分布,V3 s/V10 min服从极值Ⅱ型分布,V30 min/V10 min以及V1 h/V10 min服从极值Ⅲ型分布.分别处于台风远端和近端的两处观测塔的实测记录表明,A类场地下,在台风影响范围内,工程场地处台风气候条件下10 m高度处风速时距转换系数的取值及其概率分布基本保持稳定,基本不受台风路径、台风强度变化、观测点在台风风场中的相对位置以及台风登陆与否的影响.A类场地的台风气候条件下,采用基于概率统计的具有一定保证率的风速时距转换系数取值,能够为建筑结构抗风性能设计提供可靠保证.
[Abstract]:In order to understand the changes of wind speed near the surface during the landing process of typhoons off the southeast coast of China and its influencing factors, According to the real time wind speed record data of two typical strong typhoons (Matsa 0509 and Kanu (Khanun 0515) at the altitude of 10 m above the ground during the two typical strong typhoons (Matsa 0509 and Kanu 0515) measured in the Donghai Tang observation Tower of Zhejiang Province and the Luchao Port observation Tower in Shanghai in 2005, respectively. The conversion coefficient and its probability distribution of wind speed with different distances are calculated. The results show that the time-distance conversion coefficient of wind speed is distributed from the generalized extreme value distribution (V3 s/V10 min) to the extreme type 鈪，

本文编号：2155338