多层钢框架结构的优化设计研究
发布时间：2018-08-08 12:04
【摘要】：钢结构被称为“绿色建筑”，因为钢结构有强度高、抗震性能好、结构构件尺寸小、自重轻和工期短的优点，而且符合保护环境、材料再利用、可持续发展的要求。钢框架结构可以灵活地布置建筑的平面，施工快捷，应用前景极为广阔。然而现在在我国应用不是很广泛，设计方法还有不少不合理的地方，复杂钢结构的施工技术还没被掌握。本文研究了钢结构的合理设计，以期待设计出高质量的钢框架结构。 结构的安全由结构的概念设计、结构的承载力计算和结构的构造措施组成。结构的概念设计包括注意场地选择、建筑重量对结构抗震性能的影响的分析研究、结构的延性设计的研究、填充墙对结构抗震性能影响的研究、设置多道抗震防线和施工质量等方面。由于未来某个时期建筑遭受的地震影响无法事先精确确定，仅通过抗震计算不能保证结构的抗震安全，概念设计可以很好保证结构抗震安全，概念设计一方面降低了结构受到的地震作用，另一方面提高了结构的抗震性能。 本文将有限元技术与结构优化设计结合起来，，对钢框架进行优化设计，探求优化方法。依据钢结构设计理论建立多层钢框架结构优化模型，以钢框架构件截面尺寸为设计变量，以位移和应力为约束条件，借助于ANSYS软件对结构进行了优化设计。优化后的结构构件的截面面积显著变小，结构应力和位移指标有了显著的改善，表明ANSYS的优化方法可以提高设计效率，节约钢材,降低工程造价，具有很大的现实意义。
[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.
【学位授予单位】：西安建筑科技大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TU391
本文编号：2171734
[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.
【学位授予单位】：西安建筑科技大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TU391
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