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《Sichuan Building Science》 2013-04
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Plastic analysis on buckling restrained braced steel frame

YU Aiping,BAO Enhe,LIU Baochen,XING Xinkui(Guangxi Scientific Experiment Center of Mining,Metallurgy and Environment,Guilin University of Technology,Guilin 541004,China)  
6 piece of building models were designed for studying the multi buckling restrained braced steel frame in this paper.The main parameters in the study included the frame strength and the level participation ratio β.Second-order nonlinear analyses for 6 pieces of building models are conducted based on plastic hinge theory,and evaluate formula was given based on energy and story displacement.Comparisons between static and dynamic elastic-plastic analysis results were conducted in these models.The parametric analysis was performed on story displacement,shear,the energy distribution of buckling restrained brace and the relationship of hysteretic curve.The results revealed that the static analysis responses of story displacement,shear,the energy distribution of buckling restrained brace and the relationship of hysteretic curve are in agreement with the dynamic when the frame strength is 0.3 or 0.5 and the level participation ratio β between 30% and 60%.So the static analysis value can evaluate the value of seismic response.
【Fund】: 广西自然科学回国基金项目(2011GXNSFC018004);; 桂林理工大学科研项目(2401003307)
【CateGory Index】: TU391
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