本文關(guān)鍵詞： 風(fēng)荷載 數(shù)值模擬 典型建筑 平均風(fēng)壓系數(shù) 風(fēng)壓風(fēng)場　出處：《河北工程大學(xué)》2017年碩士論文　論文類型：學(xué)位論文

【摘要】：《建筑結(jié)構(gòu)荷載規(guī)范》明確規(guī)定了風(fēng)荷載在建筑結(jié)構(gòu)抗風(fēng)設(shè)計(jì)中的重要角色,近幾年來各種形式的超高層建筑,大跨度結(jié)構(gòu)越來越多的出現(xiàn)在人們的視野中,而這類建筑對風(fēng)作用特別敏感,風(fēng)荷載在其設(shè)計(jì)荷載中甚至起到?jīng)Q定性的作用,結(jié)構(gòu)的抗風(fēng)設(shè)計(jì)是這類建筑的一個(gè)非常重要的課題。作為風(fēng)洞試驗(yàn)研究風(fēng)荷載的一個(gè)輔助手段,風(fēng)荷載數(shù)值模擬技術(shù)在結(jié)構(gòu)抗風(fēng)設(shè)計(jì)中逐漸扮演越來越重要的角色,由于其具有一些顯著優(yōu)點(diǎn),比如經(jīng)濟(jì)性、靈活性、時(shí)效性以及較強(qiáng)的模擬性,使得風(fēng)荷載數(shù)值模擬在研究建筑結(jié)構(gòu)表面風(fēng)壓風(fēng)場中具有很高的工程現(xiàn)實(shí)意義。本文基于CFD數(shù)值模擬技術(shù),在Fluent軟件平臺上對典型的結(jié)構(gòu)進(jìn)行了風(fēng)荷載數(shù)值模擬,通過分析得出一些規(guī)律,具體工作及結(jié)論如下:(1)首先說明結(jié)構(gòu)抗風(fēng)的重要性,介紹國內(nèi)外風(fēng)工程的研究現(xiàn)狀以及研究方法。然后介紹風(fēng)特性和鈍體繞流,計(jì)算流體力學(xué)CFD的基本理論,從而引出應(yīng)用CFD技術(shù),基于Fluent平臺對典型的建筑物進(jìn)行風(fēng)荷載數(shù)值模擬的可行性。(2)對凹形平屋頂立體結(jié)構(gòu)進(jìn)行數(shù)值模擬,得出不同湍流模型下各立面的風(fēng)壓分布云圖,各測點(diǎn)的壓力值,各立面的風(fēng)荷載體型系數(shù),然后與規(guī)范值比較,得出用Fluent軟件進(jìn)行風(fēng)荷載數(shù)值模擬的可行性。(3)以H型建筑物為研究對象,首先進(jìn)行不同風(fēng)向角下風(fēng)壓分布研究,分析各種風(fēng)向角下測點(diǎn)的風(fēng)壓分布規(guī)律;然后設(shè)置四種典型工況對研究對象分別數(shù)值模擬得出各種工況下風(fēng)壓風(fēng)場分布規(guī)律,從而為相似建筑設(shè)計(jì)中遇到的抗風(fēng)問題提供參考。
[Abstract]:The Code of load for Building structures clearly stipulates the important role of wind load in the wind resistant design of building structures. In recent years, more and more long-span structures have appeared in the sight of people in various forms of super-tall buildings. But this kind of building is especially sensitive to wind action, and wind load plays a decisive role in its design load. The wind resistant design of structure is a very important subject in this kind of building. It is an auxiliary means of wind tunnel test to study wind load. Wind load numerical simulation technology has gradually played an increasingly important role in wind resistant design of structures, because of its obvious advantages, such as economy, flexibility, timeliness and strong simulation. The numerical simulation of wind load is of great practical significance in the study of wind field on the surface of building structure. Based on CFD numerical simulation technology, the numerical simulation of wind load on typical structure is carried out on the platform of Fluent software. By analyzing some laws, the concrete work and conclusions are as follows: (1) first, the importance of wind resistance of structures is explained, and the research status and research methods of wind engineering at home and abroad are introduced. Then, the wind characteristics and the flow around the blunt body are introduced. The basic theory of computational fluid dynamics (CFD), and the feasibility of numerical simulation of wind load on typical buildings based on CFD technology based on Fluent platform are introduced. The numerical simulation of concave flat roof structure is carried out. The wind pressure distribution cloud map of each elevation, the pressure value of each measuring point, the wind load shape coefficient of each elevation under different turbulence models are obtained, and then compared with the standard values. The feasibility of numerical simulation of wind load with Fluent software is obtained. Taking H type building as the research object, the distribution of wind pressure under different wind direction angles is studied, and the wind pressure distribution law of measuring points at various wind direction angles is analyzed. The distribution of wind pressure and wind field under various working conditions is obtained by numerical simulation of four typical working conditions, which provides a reference for the wind resistance problems encountered in similar building design.
【學(xué)位授予單位】：河北工程大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TU312.1

【參考文獻(xiàn)】

相關(guān)期刊論文 前4條

1 陳永輝;王強(qiáng);樸明波;;湍流模型的發(fā)展及其研究現(xiàn)狀[J];能源與環(huán)境;2009年02期

2 宋麗莉,龐加斌,毛慧琴,劉愛君;邊界層湍流資料處理方法對風(fēng)工程參數(shù)的影響[J];建筑結(jié)構(gòu);2005年06期

3 王玲玲;大渦模擬理論及其應(yīng)用綜述[J];河海大學(xué)學(xué)報(bào)(自然科學(xué)版);2004年03期

4 劉星,卞恩榮,朱金福;非結(jié)構(gòu)網(wǎng)格生成技術(shù)[J];南京航空航天大學(xué)學(xué)報(bào);1999年06期

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