Combined Ring Support System And Design Method Of Energy Dissipation

Composite ring energy dissipation brace is a new type of support structure with good energy dissipation capacity.Among them,the combination of circular ring energy dissipation brace is composed of the support and the combination of ring damper.Combined ring brace as lateral force resisting members excellent,tension and compression deformation energy through under force,stiffness and hysteretic performance is good,and it has the advantages of simple design,easy manufacture,easy installation,convenient replacement,high cost,so the combination will become popular in engineering applications of ring brace.At present,many domestic and foreign scholars mainly study the energy dissipation structure mainly concentrated in bearing capacity,energy dissipation capacity and buckling problems of braces,have reached the corresponding conclusions and achievements.However,the damper and the supporting combined form a new damping support,new damping supporting effect on seismic performance of steel frame and new damping supporting steel frame structure design method research content is still blank.Therefore,this paper puts forward a new kind of damping support ring consumption can support.In this paper,the design method of steel frame-composite ring energy dissipation brace structure is put forward.The office building for the design of the prototype,the design of a six story steel frame-combined circular ring energy dissipation brace.According to the calculation results,the two story steel frame-combined circular ring energy dissipation brace is selected and the original proportion is two,and the single span structure is modeled.According to the member functions in this paper proposed steel frame-composite ring energy dissipation brace structure lateral force pass the way of force: steel frame by nodes in the lateral force transmission to the combined ring energy dissipation brace;through its own deformation will be brought to bear on the lateral force is transmitted to the steel frame support combined ring energy dissipation of;steel frame by its deformation will be lateral force passed down to the base.Steel frame and the combination of the circle of braces is calculated by force analysis.The according to the front of the design method and calculation results,the establishment of the combination ring damper,steel frame-combined ring energy dissipation brace,steel frame and ordinary center support and steel frame-ordinary eccentric support working status of the nonlinear finite element analysis of the structure of four kinds of structure model and simulate the cyclic load under.In order to study the mechanical behavior and energy dissipation capacity of the steel frame-composite ring energy dissipation brace structure,the steel frame center support and the steel frame are established.The finite element analysis of the overall and local stress performance,force transmission mechanism and hysteretic energy dissipation capacity of the four kinds of structures are carried out by the hysteresis curve and the stress.Research results show that the combined ring damper not only has a good bearing capacity and initial stiffness,and has a good energy dissipation capacity;steel frame braced structure with combined ring enough bearing capacity,initial stiffness and good energy dissipation capacity;steel frame combined ring energy consumption support structure carrying capacity and the other two groups of steel frame the support structure is similar,but the initial stiffness is weaker than the other two groups of steel braced frame structure;steel frame composite ring energy dissipation brace structure hysteretic energy dissipation capacity is better than steel frame center support structure,slightly better than the steel frame eccentric support structure.The steel frame braced structure combination ring significantly delay or avoid premature buckling problems of steel frame bracing and avoided by the sacrifice of the failure of the beams reach the seismic effect of eccentrically braced steel frame.The new structure of combined ring energy dissipation brace is proposed for the first time,which not only combines the advantages of the damper and the support system,but also improves the current seismic structure system.