Title: Hysteretic behavior analysis and design of the single-span and double layer steel frame based on the outerjacketing storey-adding
Abstract: In order to study the seismic performance of single-span double-layer steel frame,the slenderness ratio,axial compression ratio and the loading position for the parameters,18 groups of single-spandouble-layer steel frame system was designed.Based on a simplified mechanical model and constitutive relations of material,using ABAQUS software to establish the corresponding finite element model,static analysis of frame structure under monotonic horizontal load was carried out.Through the simulation analysis and test results of the single-span double-layer steel frame,both are in good agreement,the rationality the finite element model is established is verified in this paper.The nonlinear hysteretic analysis of 18 groups of single-span double-layer steel framework is performed,on the basis the author extracted and compared the load-displacement hysteretic curves,the envelope and skeleton curves.Based on the energy equivalent method,ductility factor of structure is calculated,and the plastic hinges of structure system appeared successively and distribution regularity was investigated.Design recommendations of steel frame in the long-span,heavy load and outer-jacketing adding-story engineering are given.The results show that the single-span double-layer steel frame structure has plump hysteretic curve,plastic performance,dissipation energy and ductility are good,and plastic hinge mechanism of strong column and weak beam is formed.These can provide technical support for new engineering and renovation of existing buildings.
Publication Year: 2014
Publication Date: 2014-01-01
Language: en
Type: article
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