本文關(guān)鍵詞： 瓊州海峽大橋 現(xiàn)場(chǎng)觀測(cè) 風(fēng)特征參數(shù) 雨量 風(fēng)參數(shù)模型　出處：《湖南科技大學(xué)》2014年碩士論文　論文類型：學(xué)位論文

【摘要】：隨著新材料、新技術(shù)、新工藝的不斷進(jìn)步，21世紀(jì)世界橋梁將實(shí)現(xiàn)新型、大跨、輕質(zhì)和美觀的發(fā)展新目標(biāo)。大跨柔性特大型橋梁，特別是地處沿海臺(tái)風(fēng)帶的特大橋梁，風(fēng)-雨耦合對(duì)橋梁的作用可能成為不可忽略的因素，風(fēng)-雨耦合作用主要表現(xiàn)為風(fēng)驅(qū)雨對(duì)結(jié)構(gòu)的直接沖擊作用以及風(fēng)-雨-結(jié)構(gòu)三相耦合對(duì)結(jié)構(gòu)氣動(dòng)特性的影響。本文以瓊州海峽跨海特大橋作為研究背景，對(duì)沿海地區(qū)橋址的風(fēng)雨特征展開了相關(guān)研究。本文主要工作包括： 1、對(duì)國(guó)內(nèi)外風(fēng)雨觀測(cè)研究現(xiàn)狀進(jìn)行了綜述。 2、以瓊州海峽大橋?yàn)楣こ瘫尘�，，設(shè)計(jì)了風(fēng)、雨環(huán)境現(xiàn)場(chǎng)觀測(cè)系統(tǒng)，并進(jìn)行了長(zhǎng)期觀測(cè)，獲得橋址處風(fēng)、雨觀測(cè)數(shù)據(jù)。 3、提出了風(fēng)、雨特征提取方法，編制了相應(yīng)的MATLAB程序。選取韋森特、啟德、山神三次臺(tái)風(fēng)作為研究對(duì)象，得到了三次臺(tái)風(fēng)的平均風(fēng)速、脈動(dòng)風(fēng)速、風(fēng)向、風(fēng)剖面指數(shù)、紊流度、陣風(fēng)因子、風(fēng)功率譜、雨量等風(fēng)雨特征參數(shù)。 4、采用概率論與數(shù)理統(tǒng)計(jì)方法，分別對(duì)韋森特、啟德、山神三次臺(tái)風(fēng)的10分鐘平均風(fēng)速、風(fēng)攻角、紊流度、陣風(fēng)因子等風(fēng)特征統(tǒng)計(jì)模型、雨特征統(tǒng)計(jì)模型以及風(fēng)參數(shù)與雨量關(guān)系進(jìn)行了研究。
[Abstract]:With the continuous progress of new materials, new technology and new technology, the world bridge in the 21st century will realize the new development goal of new type, large span, light weight and beautiful appearance. Especially for the large bridge located in the coastal typhoon belt, the effect of the wind-rain coupling on the bridge may become a factor that can not be ignored. The wind-rain coupling is mainly the direct impact of wind-driven rain on the structure and the effect of wind-rain-structure three-phase coupling on the aerodynamic characteristics of the structure. In this paper, the Qiongzhou Strait cross-sea bridge is taken as the research background. The wind and rain characteristics of bridge sites in coastal areas are studied. The main work of this paper is as follows: 1. The present situation of wind and rain observation at home and abroad is summarized. 2. Taking Qiongzhou Strait Bridge as the engineering background, the field observation system of wind and rain environment is designed, and long-term observation is carried out, and the observation data of wind and rain at the bridge site are obtained. 3. The method of extracting wind and rain features is put forward, and the corresponding MATLAB program is compiled. Three typhoons, Vicente, Qide and Shanshen, are selected as the research objects, and the average wind speed of the three typhoons is obtained. Fluctuating wind speed, wind direction, wind profile index, turbulence, gust factor, wind power spectrum, rainfall and other wind characteristics. 4. By using probability theory and mathematical statistical method, the statistical models of wind characteristics such as mean wind speed, angle of attack, turbulence and gust factors of three typhoons, Vicente, Qide and Shanshen, were analyzed respectively. The statistical model of rain characteristics and the relationship between wind parameters and rainfall are studied.
【學(xué)位授予單位】：湖南科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：U442

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