The logistics warehouse and data room buildings with the characteristics of high floor height,large-span and large live load,the use of ordinary rigid frame will lead to large section size of beam and column,and the phenomenon of beam end not yielding and column foot yielding will occur under large earthquake.So,hinged high-strength steel frame-buckling restrained brace structure system was proposed.The system mainly bears the vertical load through the hinged high-strength steel frame of beam and column,and the buckling restrained brace and the connected rigid ordinary steel frame form the support frame to mainly bear the horizontal force of the structure.Combined with the engineering example,the finite element model was established to analyze the seismic performance of the hinged high-strength steel frame-buckling restrained brace structure system.The results show that under frequent earthquakes,the seismic action is borne by the support frame.Under rare earthquakes,the structural stiffness degrades,the internal force response of the structure is reduced,the buckling restrained brace produces a large yield deformation,dissipates seismic energy,and the frame beams and columns in the support frame remain elastic.The high-strength steel beams and columns of the hinged high-strength steel frame remain elastic,and the inter-story displacement angle of the structure is less than 1/100.Under the action of extremely rare earthquakes,the structure still does not appear plastic hinges.Compared with the ordinary rigid frame,the hinged high-strength steel frame-buckling restrained brace structure system saves 9%of the steel consumption and the carbon emission is reduced by 9%.The hinged high-strength steel frame-buckling restrained brace structural system has good seismic performance,and has good technical advantages in the use of buildings with high storey height,large-span and large live load in high intensity areas.
关键词
支撑框架/高强钢/屈曲约束支撑/抗震性能/碳排放/梁柱铰接
Key words
support frame/high-strength steel/buckling restrained brace/seismic performance/carbon emission/beam-column hinge-connected
万方数据