本文選題：大跨柱面網(wǎng)殼 + 結(jié)構(gòu)設(shè)計�。� 參考：《河北工程大學》2013年碩士論文

【摘要】：由于當今社會對能源、基礎(chǔ)建設(shè)的需求在不斷地增加，煤炭、電力等行業(yè)中的大型儲煤、儲料設(shè)施得到了很大發(fā)展與應用。大跨柱面網(wǎng)殼結(jié)構(gòu)作為空間網(wǎng)格結(jié)構(gòu)的一種形式，因其受力性能好、經(jīng)濟美觀且能適應大跨結(jié)構(gòu)的要求，已成為大型儲煤、儲料結(jié)構(gòu)的主要類型。 本文以某干煤棚為例，系統(tǒng)地闡述了大跨柱面網(wǎng)殼結(jié)構(gòu)的方案設(shè)計步驟，論述了各種參數(shù)對結(jié)構(gòu)技術(shù)及經(jīng)濟指標的影響，最終確定了適合本工程的結(jié)構(gòu)形式及基本參數(shù)。 本文在方案設(shè)計的基礎(chǔ)上，針對結(jié)構(gòu)特點，利用基于有限元的分析設(shè)計軟件MSTCAD對網(wǎng)殼進行結(jié)構(gòu)設(shè)計，分別分析了結(jié)構(gòu)在靜力、動力作用下的響應，總結(jié)了結(jié)構(gòu)的受力特點。 由于我國荷載規(guī)范未給出針對本文網(wǎng)殼結(jié)構(gòu)的體型系數(shù)取值，，而風荷載對于大跨空間結(jié)構(gòu)往往起控制作用，因此本文主要利用CFD（Computational FluidDynamics）數(shù)值模擬技術(shù)，采用Fluent軟件對結(jié)構(gòu)進行數(shù)值風洞模擬，闡述了數(shù)值模擬的基本步驟及軟件模擬過程中相關(guān)參數(shù)的取值。最后分析結(jié)構(gòu)風壓分布規(guī)律，得出結(jié)構(gòu)風荷載體型系數(shù)。通過與類似工程風洞試驗結(jié)果的對比以對本文數(shù)值模擬方法的準確性進行分析校對，分析了誤差產(chǎn)生的原因，探討了參考規(guī)范與數(shù)值模擬方法注意的問題。
[Abstract]:Because of the increasing demand for energy and infrastructure, coal storage facilities in coal, electricity and other industries have been greatly developed and applied. As a form of spatial grid structure, large-span cylindrical reticulated shell structure has become the main type of large coal storage and material storage structure because of its good mechanical performance, economic beauty and adaptability to the requirements of large-span structure. Taking a dry coal shed as an example, this paper systematically expounds the scheme design steps of large-span cylindrical latticed shell structure, discusses the influence of various parameters on structural technical and economic indexes, and finally determines the structural form and basic parameters suitable for this project. In this paper, based on the scheme design, the structural design of the latticed shell is carried out by using the finite element analysis software MSTCAD. The response of the structure under static and dynamic action is analyzed, and the stress characteristics of the structure are summarized. Because the load code of our country does not give the value of shape coefficient for the reticulated shell structure in this paper, and the wind load often plays a controlling role in the long-span space structure, so this paper mainly uses the numerical simulation technology of CFD(Computational fluid dynamics. The numerical wind tunnel simulation of the structure is carried out by using Fluent software. The basic steps of numerical simulation and the values of relevant parameters in the process of software simulation are described. Finally, the wind pressure distribution law of the structure is analyzed and the shape coefficient of the structure wind load is obtained. By comparing the results of wind tunnel tests with those of similar projects, the accuracy of the numerical simulation method in this paper is analyzed and proofread, the causes of the errors are analyzed, and the attention of the reference specification and the numerical simulation method are discussed.
【學位授予單位】：河北工程大學
【學位級別】：碩士
【學位授予年份】：2013
【分類號】：TU399

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本文編號：1990329