大跨度屋蓋結(jié)構(gòu)的幾種選型對(duì)比和改進(jìn)
[Abstract]:With the development of science and technology, the form and function of architecture have changed dramatically. As the fastest developing structural type in the world, long-span spatial structure represents the overall level of building science and technology in a country. The important characteristic of long-span structure distinguished from the traditional structure is that it has a long span, some of which even reach hundreds of meters. In order to meet the requirements, it is necessary for the structure to have better mechanical performance and more reasonable spatial system. In addition, the economy of long-span buildings is reasonable, the overall stiffness is large and the shape is beautiful, all of which have been favored by people. In this paper, three common long-span roof forms, flat grid, three-dimensional pipe truss and prestressed Zhang Xian structure, are selected for comparative analysis, and the spatial forms of the three structures are systematically analyzed. The mechanical characteristics and economic indexes are described in detail. Aiming at the shortcomings of Zhang Xian's structure, a novel structural style improvement measure is put forward. First of all, guided by the relevant literature at home and abroad, this paper reviews the development history, practical application and research status of grid, pipe truss and Zhang Xian structure, and summarizes and discusses the advantages and disadvantages of each structural type. The structure is compared and summarized from the shape, joint and stress characteristics. In this paper, several kinds of commercial software will be used to design and analyze the structure: MSTCAD2008 software to deal with grid problem, 3D3S and SAP2000 software to deal with pipe truss problem and Zhang Xian problem, and Zhang Xian's improved structure will be analyzed by ANSYS modeling. In this paper, the design principle and design details of all kinds of software involved will be described in detail. Through the application of various software and the detailed analysis of the structure, some conclusions of practical significance for the project will be drawn. Expect to give some advice and reference to the young engineers of their peers. With the development of all kinds of long-span structures becoming more and more perfect, how to obtain economy and reasonable structure configuration is an important issue worthy of consideration by all designers. In the design process, what kind of style is adopted, what kind of constraints limit the reasonable force of the structure, and how to optimize the function of each member as one of the important evaluation indexes of engineering design. In the third chapter of this paper, the different types of structures are analyzed and compared, and the most reasonable arrangement of components is made on the basis of the conclusions of the existing literature and specifications. Their static performance is analyzed on the basis of satisfying the limit constraints, and their economic indexes are compared. In the fourth chapter, on the basis of structural comparative analysis and engineering design, the finite element simulation and force analysis of the improved structure form will be carried out. the results will verify the feasibility and correctness of the theoretical optimization and enhance the safety and economy of the structural design. At the end of the paper, the above research contents and analysis conclusions will be integrated and summarized. As an innovative and open structure type, long-span spatial structure will achieve more scientific and technological and better quality improvement and innovation in the future!
【學(xué)位授予單位】:大連理工大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2014
【分類號(hào)】:TU399
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