Vibration Control Research Of High-rise Structures With Dampers Based On Energy Principle

With the development of civil engineering,the idea of resisting earthquake action of building structure has been updated constantly,and it has been from the simple structural seismic transformation to the seismic design of seismic and damping control.The engineering practice has proved that when the structure is passive damping control,the energy dissipation structure of the damper is very good in seismic performance.At present,no matter energy dissipation theory analysis,or structural damping control research is not enough.This subject is based on the theory of power balance seismic,to develop reinforced concrete high-rise structure dissipation damping theory analysis and damping control research.Based on the principle of energy balance,this paper taking a 12-storey frame reinforced concrete structure as the research object,on the basis of the selected damper type and different seismic wave,the aseismic energy elastoplastic analysis of the structure is carried out by using the finite element software PERFORM-3D,and the energy dissipation principle and the damping control method of the building structure are developed from the concept of seismic energies.Firstly,based on the principle of energy balance,the total input energy of earthquake-absorbing structures under different seismic input conditions is studied.Seismic hysteretic energy dissipation,structure damping energy dissipation and energy dissipation law of damper,and analysis on the structure of damper compartment and dissipation frame structures with weak layer respectively,the corresponding seismic energy parameters can be clearly characterized the dissipation and damping effect of the structure.On this basis,five kinds of damping control schemes are proposed according to the engineering experience and different seismic ideas.The top sequence control,the bottom order control,the empirical order control,the interlayer displacement control and the Hysteretic energy dissipation control,and the seismic input energy,the structure energy dissipation and the damper energy dissipation are calculated and compared based on different seismic wave to five kinds of shock control schemes.The results show that the damping effect of the top sequence control is not obvious;the underlying sequential control,experiential sequential control and interlayer displacement control,with the increase of the number of control steps,the structural vibration index is obviously reduced,wherein the interlayer displacement control method is better than the other two.The hysteretic energy dissipation control method is significant for the structure dissipation effect,and the damping indexes are better than other control methods under the different seismic waves,and aremore general and universal in the characterization of energy dissipation index and the layout method of damping damper.The research shows that the theory of energy balance is used in the analysis of seismic control,which is more scientific and reasonable than the existing method,which can provide reference for practical engineering.