Seismic And Energy Dissipation Performance Study On New Type Of Energy Dissipation Damping Steucture Stairs

Earthquake is the calamitous natural phenomena with huge destructive power,therefore,strong earthquake brings the huge disaster for human and economic losses.All kinds of engineering and technical measures are proposed by civil engineers to improve the seismic resistance of structures,so as to reduce structural seismic damage loss.But the seismic design of stair did not cause the attention of engineering and technical personnel.Aiming at the shortcomings of the existing specifications and images on the staircase design and combined with the application of energy dissipation damping technology,a simple and economical new friction damping bearing is designed and a new type of energy dissipation damping structure stairs is proposed.Dynamic time history analysis is conducted in different framework stairs by Using ABAQUS finite element analysis software,so as to analysis seismic and energy dissipation performance of the new type of energy dissipation damping structure stairs,the main work of this papers are as follows:(1)According to the stairs connection with the main structure,stairs structure are divided into ordinary stairs structure,sliding stair structure,damping and energy dissipation stairs structure,the stairs research status at home and abroad are elaborated.(2)A new type of friction damping bearing is designed and the detail structure and mechanics principle are introduced.new type of energy dissipation damping structure stairs is proposed and the detail structure,mechanics principle and energy analysis are introduced.(3)Taking single story frame structure installed by ordinary stairs,ordinary sliding stair,new sliding stair and new energy dissipation damping structure stairs as an example.Finite element analysis software ABAQUS is adopted to establish the finite element refinement analysis calculation model of four kinds of single layer different stair frame structure,and time history analysis are carried out on the structure,respectively from five aspects of the structural base shear,displacement,acceleration,structure stress and damage,so as to prove the seismic and energy dissipation performance of new energy dissipation damping stairs in frame structure.(4)Taking three story frame structure installed by ordinary stairs,ordinary sliding stair,new sliding stair and new energy dissipation damping structure stairs as an example.Finite element analysis software ABAQUS is adopted to establish the finite element refinement analysis calculation model of four kinds of three layer different stair frame structure,and frequent earthquakes and rare earthquakes time history analysis are carried out on the structure,respectively from three aspects of the structural base shear,displacement,and acceleration,also and the stress of the different stair frame structure under severe earthquake are analyzed,so as to prove seismic and energy dissipation performance of new energy dissipation damping stairs in frame structure.