Hysteretic behavior analysis of energy dissipation swing steel braced structure with column base
Energy-dissipating steel supported frame structure with column feet is a kind of recoverable structure with good energy dissipation capacity,and easy to replace and repair after column feet are damaged.In this pa-per,the finite element analysis software ABAQUS was used to establish the model of the steel support structure with energy-dissipating column feet.Two different structural forms of energy-dissipating column feet were used to analyze the hysteretic performance of the support structure under the action of low cyclic cyclic loads.The analysis results show that the steel frame supported by energy dissipation dissipation at column feet has full hys-teresis curve,strong energy dissipation capacity and good deformation capacity.The foot of the energy dissipation column relies on the plate between the holes of the energy dissipation shear plate to enter the plastic energy dis-sipation.The end of the plate between the holes of the shear plate is the weak part,and the fracture occurs first in the loading process.The larger the width of the plates between the holes of the energy-dissipating column feet is,the smaller the width of the shear plate of the energy-dissipating column feet will be;the larger the span of the supporting frame is,the better the energy-dissipating capacity of the components will be.The typical yield mechanism of the energy-dissipating swing steel supporting structure was analyzed.Based on the assumption of small deformation,the calculation formula of the yield bearing capacity was derived,which is in good agreement with the finite element analysis results,and can provide a good basis for practical engineering.
energy dissipation column baseoptimization of opening shapehysteretic performanceswing steel support frame
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