【摘要】：為掌握中國東南沿海臺風登陸過程近地面風速變化規(guī)律及影響因素,根據(jù)2005年浙江省東海塘觀測塔和上海市蘆潮港觀測塔分別實測得到的2次典型強臺風(麥莎(Matsa 0509)和卡努(Khanun 0515))登陸時段距地面10 m高度處的實時風速記錄資料,計算了不同時距風速的轉(zhuǎn)換系數(shù)及其概率分布.計算結(jié)果表明,風速時距轉(zhuǎn)換系數(shù)服從廣義極值分布,V3 s/V10 min服從極值Ⅱ型分布,V30 min/V10 min以及V1 h/V10 min服從極值Ⅲ型分布.分別處于臺風遠端和近端的兩處觀測塔的實測記錄表明,A類場地下,在臺風影響范圍內(nèi),工程場地處臺風氣候條件下10 m高度處風速時距轉(zhuǎn)換系數(shù)的取值及其概率分布基本保持穩(wěn)定,基本不受臺風路徑、臺風強度變化、觀測點在臺風風場中的相對位置以及臺風登陸與否的影響.A類場地的臺風氣候條件下,采用基于概率統(tǒng)計的具有一定保證率的風速時距轉(zhuǎn)換系數(shù)取值,能夠為建筑結(jié)構(gòu)抗風性能設(shè)計提供可靠保證.
[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，

本文編號：2155338