Y型偏心支撑钢框架的弹塑性受力性能研究.pdf

Subject :The elastic-plasticity mechanical performance study of Y-eccentrically braced steel frame Specialty : Structural Engineering Name : Tian Xiao-fei (Signature) Instructor : GuoBing-shan (Signature) ABSTRACT Eccentrically braced steel frame structure is a recently developed in the high-intensity earthquake zone building a new type of lateral force resisting structural system, optimized by changing the the link beam cross-section size and support arrangement of the seismic performance of the structure, in rareunder earthquake rely mainly on the plastic deformation of the link beam to absorb seismic energy will not cause damage to the frame beam and column, after the earthquake, only link beam replacement, the entire structure can be restored to the state before the earthquake. In this paper, finite element analysis software SAP2000 to select the member unit type, establish reasonable Y-eccentrically braced steel frame finite element model, and nonlinear static pushover analysis. The structure of the P-△ effect is considered in the analysis process, mainly carried out as follows: (1) Based on our current design specifications procedures, combined with the working principle of the eccentrically braced steel frames, Y-type eccentrically braced steel frames simplified design methods and calculation principles; (2) summarizes the background and development of the nonlinear static pushover analysis method of the basic principles of the analysis method, the main task and the implementation steps; (3)