Study on seismic performance and mechanical model of T-shaped steel energy dissipation hinged damper
In order to improve the seismic performance of prefabricated frame structures,different types of steel energy dissipation hinged dampers have been proposed that the prefabricated beams and columns are connected with steel hinges and the mild steel energy-dissipating elements are installed on the upper,lower or both sides of the hinges.The structural forms and seismic performance of several energy-dissipated hinged dampers were summarized,and a T-shaped energy-dissipated hinged damper with simple structure and good seismic performance was selected to study the seismic performance and mechanical model.ABAQUS software was used to simulate the test of T-shaped damper,on this basis,24 finite element models were established to analyze the flange weakening degree and T-shaped section size of the T-shaped energy dissipation element,the different influencing factors were quantified to obtain the skeleton curve calculation formula of the energy dissipation hinged damper,finally,the correctness of the formula was verified.The results show that the T-shaped energy dissipation hinged damper has good bearing capacity,ductility and energy dissipation capacity.The proposed skeleton curve has high accuracy,and can provide reference for the design of this kind of damper.
seismic performanceT-shaped energy dissipation hinged dampermechanical modelparameter analysisskeleton curve
万方数据
维普
