發(fā)布時(shí)間：2018-07-31 10:41

【摘要】：為掌握中國東南沿海臺(tái)風(fēng)登陸過程近地面風(fēng)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(shí)測得到的2次典型強(qiáng)臺(tái)風(fēng)(麥莎(Matsa 0509)和卡努(Khanun 0515))登陸時(shí)段距地面10 m高度處的實(shí)時(shí)風(fēng)速記錄資料,計(jì)算了不同時(shí)距風(fēng)速的轉(zhuǎn)換系數(shù)及其概率分布.計(jì)算結(jié)果表明,風(fēng)速時(shí)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(tái)風(fēng)遠(yuǎn)端和近端的兩處觀測塔的實(shí)測記錄表明,A類場地下,在臺(tái)風(fēng)影響范圍內(nèi),工程場地處臺(tái)風(fēng)氣候條件下10 m高度處風(fēng)速時(shí)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(tái)風(fēng)路徑、臺(tái)風(fēng)強(qiáng)度變化、觀測點(diǎn)在臺(tái)風(fēng)風(fēng)場中的相對位置以及臺(tái)風(fēng)登陸與否的影響.A類場地的臺(tái)風(fēng)氣候條件下,采用基于概率統(tǒng)計(jì)的具有一定保證率的風(fēng)速時(shí)距轉(zhuǎn)換系數(shù)取值,能夠?yàn)榻ㄖY(jié)構(gòu)抗風(fēng)性能設(shè)計(jì)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