【摘要】：鋼結(jié)構(gòu)被稱為“綠色建筑”，因?yàn)殇摻Y(jié)構(gòu)有強(qiáng)度高、抗震性能好、結(jié)構(gòu)構(gòu)件尺寸小、自重輕和工期短的優(yōu)點(diǎn)，而且符合保護(hù)環(huán)境、材料再利用、可持續(xù)發(fā)展的要求。鋼框架結(jié)構(gòu)可以靈活地布置建筑的平面，施工快捷，應(yīng)用前景極為廣闊。然而現(xiàn)在在我國(guó)應(yīng)用不是很廣泛，設(shè)計(jì)方法還有不少不合理的地方，復(fù)雜鋼結(jié)構(gòu)的施工技術(shù)還沒被掌握。本文研究了鋼結(jié)構(gòu)的合理設(shè)計(jì)，以期待設(shè)計(jì)出高質(zhì)量的鋼框架結(jié)構(gòu)。 結(jié)構(gòu)的安全由結(jié)構(gòu)的概念設(shè)計(jì)、結(jié)構(gòu)的承載力計(jì)算和結(jié)構(gòu)的構(gòu)造措施組成。結(jié)構(gòu)的概念設(shè)計(jì)包括注意場(chǎng)地選擇、建筑重量對(duì)結(jié)構(gòu)抗震性能的影響的分析研究、結(jié)構(gòu)的延性設(shè)計(jì)的研究、填充墻對(duì)結(jié)構(gòu)抗震性能影響的研究、設(shè)置多道抗震防線和施工質(zhì)量等方面。由于未來某個(gè)時(shí)期建筑遭受的地震影響無法事先精確確定，僅通過抗震計(jì)算不能保證結(jié)構(gòu)的抗震安全，概念設(shè)計(jì)可以很好保證結(jié)構(gòu)抗震安全，概念設(shè)計(jì)一方面降低了結(jié)構(gòu)受到的地震作用，另一方面提高了結(jié)構(gòu)的抗震性能。 本文將有限元技術(shù)與結(jié)構(gòu)優(yōu)化設(shè)計(jì)結(jié)合起來，，對(duì)鋼框架進(jìn)行優(yōu)化設(shè)計(jì)，探求優(yōu)化方法。依據(jù)鋼結(jié)構(gòu)設(shè)計(jì)理論建立多層鋼框架結(jié)構(gòu)優(yōu)化模型，以鋼框架構(gòu)件截面尺寸為設(shè)計(jì)變量，以位移和應(yīng)力為約束條件，借助于ANSYS軟件對(duì)結(jié)構(gòu)進(jìn)行了優(yōu)化設(shè)計(jì)。優(yōu)化后的結(jié)構(gòu)構(gòu)件的截面面積顯著變小，結(jié)構(gòu)應(yīng)力和位移指標(biāo)有了顯著的改善，表明ANSYS的優(yōu)化方法可以提高設(shè)計(jì)效率，節(jié)約鋼材,降低工程造價(jià)，具有很大的現(xiàn)實(shí)意義。
[Abstract]:Steel structure is called "green building", because the steel structure has the advantages of high strength, good seismic performance, small structure component size, light weight and short period of time. It also meets the requirements of protection environment, material reuse and sustainable development. The steel frame structure can be flexibly arranged and built plane, the construction is fast and the application prospect is very broad. However, the application prospect is very broad. It is not very widely used in our country, and there are many unreasonable places in the design method. The construction technology of the complex steel structure has not been mastered. The reasonable design of the steel structure is studied in this paper, so as to expect to design a high quality steel frame structure.
The safety of the structure consists of the conceptual design of the structure, the calculation of the bearing capacity of the structure and the structural measures of the structure. The conceptual design of the structure includes the attention to the selection of the site, the analysis of the impact of the building weight on the seismic performance of the structure, the study of the ductility design of the structure, the study of the impact of the filling wall on the seismic performance of the structure, and the setting of a multi seismic resistance and prevention. Construction quality and other aspects. Because of the earthquake impact that the building suffered in the future can not be accurately determined in advance, the seismic safety of the structure can not be guaranteed by seismic calculation only. The conceptual design can guarantee the seismic safety of the structure. The conceptual design reduces the seismic effect of the structure on the one hand, and on the other hand, it improves the structure resistance. Seismic performance.
In this paper, the finite element technique and the structural optimization design are combined to optimize the design of the steel frame and explore the optimization method. Based on the steel structure design theory, the optimization model of the multi-layer steel frame structure is established. The structure is optimized with the help of the ANSYS software, taking the section size of the steel frame as the design variable, the displacement and stress as the beam condition and the software of the steel frame. Design. The sectional area of the optimized structural member becomes smaller and smaller, and the structural stress and displacement indexes have been greatly improved. It shows that the optimization method of ANSYS can improve the design efficiency, save steel and reduce the cost of the project, which has great practical significance.
【學(xué)位授予單位】：西安建筑科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2013
【分類號(hào)】：TU391

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