The Study Of The Reinforced Concrete Frame Structure Applied By Viscoelastic Energy Dissipation Device

Energy dissipation technology as a kind of popular shock absorption technology, in recent years, more and more applying in the structure, is a hot direction of the future structure of the earthquake.The paper has described the viscoelastic energy dissipation device on mechanical properties and mechanical model and taken a eight storey reinforced concrete frame structure as an example, to do seismic design and dynamic elastic plastic analysis and research, finally the conclusions have been drew.Firstly, the mechanical properties and computational model of viscoelastic dissipation device has been briefly introduced,on the basis of established the theoretical system, using finite element analysis software MIDAS Gen to establish a eight storey concrete frame structure model and adding the vibration model of viscoelastic energy dissipation. by response spectrum method and dynamic elastic-plastic history analysis method studying and calculating the three shock absorption scheme of additional equivalent damping ratio, and doing the comparative analysis of the structure earthquake dynamic characteristics under action of fortification and rare seismic.Based on the structural self vibration period of comparative analysis and three damping scheme in additional equivalent damping ratio calculation results can be seen that viscoelastic energy dissipation deviceset in the structure can make the structure of proper rigidity increase, structural damping ratio is significantly increased and the energy dissipation capacity of the structure is improved significantly.Through the comparison of the seismic performance of the original structure(without energy dissipation device) and the seismic fortification earthquake and the time history analysis under rare earthquake, it can be concluded that the seismic reduction technique can improve the seismic performance of the structure. Under the action of earthquake, the structure of the set of viscoelastic energy dissipation device and the damping effect of the structure is significant, the interlayer displacement, interlaminar shear and top displacement are compared with the original structure by obvious decrease, the dynamic response of structure under earthquake action has been reduced, the analysis results can be seen that the energy dissipation effect of the structure of the damping effect mainly depends on the arrangement position and the viscoelastic dissipation capacity. The energy dissipation arrangement can be appropriate reduced because of the less affected by the earthquake at the top of the structure. In the seismic, the hysteretic curves of viscoelastic dissipation are stable and plump, also confirming the energy dissipation capacity into full play, so as to reduce the damage to the main structure,to improve the safety performance of the structure, and to improve the seismic performance of the structure significantly.