| The combination of high strength steel eccentric brace frame system is an efficientseismic steel system, its link beam used Q235or Q345steel which has lower strengthand good deformation performance, guaranteed that the structure has good plasticdeformation and energy capacity under strongly earthquake, while the other componentsused high strength steel such as Q420, Q460or Q690to save material and reduce cost,it integrated the advantages of high strength steel hosted high capacity and eccentricbrace steel frame owed good seismic performance, however, the research on seismicperformance of such structures is scarce at home and abroad.This paper fully consulted research results of this two area, built ABAQUS finiteelement model, selected C3D8R entity unit, used structure and the sweep network cellsdivided technology, adopted kinematic constitutive model, fully considered material andgeometry nonlinear, solved by ABAQUS/Standard solution manager, analyzed the forceperformance under monotonic loading and low cycle loading, and used data of cut typeand bent type combination of high strength steel single layer single k type eccentricbrace steel frame under monotonic loading and low cycle loading, checked thecorrectness and effectiveness of the ABAQUS finite element model.Through the analysis of five sets of parameter model, mainly including the changeof material combination, link beam length, link beam web thickness, depth-span ratioand stiffener spacing, the paper gave displacement curve, hysteretic curve, skeletoncurve, stiffness displacement relationship curve and the part stress imagery and deformation figure, summarized the change rule of ultimate bearing capacity, stiffness,ductility and energy performance, described the differences between shear yield typeand bent yield type frame. Finally, according to the results of finite element analysis,this paper draw conclusions and provided design recommendation for engineeringdesign and application. |
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