屈曲约束支撑框架的抗震设计研究
[Abstract]:Buckling restrained braced frame is a kind of frame-braced structure, which has been widely used at home and abroad, and has a considerable theoretical and practical basis. However, the seismic design method and process of buckling restrained braced frame, and the comparison and analysis of seismic performance of frame structure with general frame structure and common braced frame structure in high intensity area are not enough. In view of this situation, this paper mainly carried out the following work: 1, made a brief summary of various frame-braced structures, analyzed the basic principles, advantages and disadvantages of each kind of frame-braced structure, summarized the working principle of buckling constraint bracing. Hysteresis and other characteristics. The buckling constraint bracing can not only enhance the ductility and the bearing capacity of the frame structure, but also protect the main structure from serious damage under the earthquake. The mechanical properties of buckling restrained braces are also discussed, including the analysis of the seismic test results of the braces, the performance of the stress core plate and the accumulative plastic deformation capacity, etc., and the simplified design method of the beam buckle-constrained braced frame is summarized systematically. It includes the principle of bracing arrangement, the area of equivalent section, the application of bearing capacity of bracing in design, etc. Four kinds of software, PKPM,ETABS,MIDAS and MTS, are summarized for seismic design of buckle-constrained braced frame structures, and the key points of joint design for buckle-constrained braces are also presented. Based on two engineering examples, the hysteretic model of buckling restrained braces is used to compare ordinary concrete frame structure with buckled braced frame structure, common braced steel frame structure and buckled braced steel frame structure. The difference of seismic design method and seismic performance. Comprehensive analysis and comparison are made from the aspects of scheme arrangement, bearing capacity calculation, bracing construction arrangement and elastic-plastic analysis.
【学位授予单位】:西南交通大学
【学位级别】:硕士
【学位授予年份】:2014
【分类号】:TU352.11
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