Research On Seismic Energy Response Of RC Frame With Brace Friction Damper

Earthquake disasters bring immeasurable loss to human economic life. The ideas of the friction energy dissipation damper received extensive attention of scholars at home and abroad. For sprag friction damper, under the condition of small earthquakes, brace friction damper energy provides additional support for the frame structure stiffness makes itself does not slip; And under the medium and strong earthquake, brace sliding friction dampers have, friction power dissipation energy, provide additional damping for structures, so as to reduce the structural response.This article from the perspective of seismic energy, the analysis of RC frame brace friction damper seismic energy response, and based on the change law of energy response damping structure, the optimum damping scheme are discussed. In this paper, under the action of the rarely met earthquake damping of the structure of the energy response index,reasonably control the brace each index of friction damper can gain good effect in seismic design of structures.By applying IDARC7.0 software modeling, dynamic time history analysis, calculate the damping of the RC frame structure under severe earthquake damage, and in view of the seismic energy input and the relationship between the energy dissipation brace friction damper were analyzed, and the main control of the brace friction damper parameters; The sliding displacement than the best value of bracing rigidity than alpha and beta quantifies the reflected shock absorption RC frame structure of the natural vibration period T, brace damper with the RC frame structure of the sliding displacement than alpha, stiffness than beta and other factors on seismic energy response of RC frame. In a given damping structure under the condition of natural vibration period T brace friction damper of the optimal control parameters. So brace friction damper under the optimal control parameters,can be achieved with the lowest economic cost, cases, give play to the role of the most effective energy dissipation maximum protection of the body frame structure damage from the earthquake force.