Study On Damping Performance Of Adjacent Structures With Additional Dampers

With the development of social economy,the number of urban population is increasing,and the area of per capita consumption is decreasing.Most of the buildings are designed into the monomer form,when strong winds,earthquakes and other natural disasters happen,if the distance between buildings is not sufficient,between adjacent buildings is likely to collide with each other,and the collision between two adjacent structures is one of the major causes of structural damage,collapses,earthquake damage is one of the main causes.Related researches show that the application of the control device to the structure of the building to form the energy dissipation structure is a reasonable and effective way to shock absorption.Based on the intensive development of discipline and the demand of vibration control of our country,according to the different responses of adjacent structures in random vibration,this paper studies the kinematics problem of mechanics,the additional damping device relates to the systematic.With theoretical analysis and numerical simulation,the mechanism of ring coupling relationship between parameters affecting mechanism and damping device coupling relationship between the characteristic parameters and the parameters of damper were on adjacent structures and the random seismic response of adjacent structures and its response to random earthquake adjacent structures were studied.The results are as follows:1.With the comparative analysis of two kinds of structure displacement and additional dampers and a separate additional damper transfer function curves obtained: displacement separate additional viscous dampers to reduce the displacement rate was significantly higher than that of the corresponding metal damper added separately to reduce the rate of two,while the additional displacement damper transfer function curve has been in an additional two separate displacement the damper transfer function,can be known two additional dampers have coupling effect,two kinds of damper performance have been played.2.When attached to a certain amount of metal dampers between two adjacent single freedom system in accordance with the principle of complementary metal damper stiffness,according to the optimal damping formula of theoretical derivation,the best can be obtained for viscous damping,viscous damping in the structure after the amount added by the theoretical derivation,the displacement transfer rate reduce the maximum.3.After attached to a certain amount dampers between two adjacent multi mass system in accordance with the deduced additional damping,the displacement of each layer decreases,and the peak reduction rate can reach more than 25%;the acceleration response and interlayer shear responses were also reduced in different degree;the displacement and acceleration of the structures were controlled effectively,fully that play the dual nature of the metal dampers and viscous dampers,and the inhibitory effect of multi order control is more prominent.4.The energy structure itself consumes seismic input energy was reduced obviously compared with the original structure of the show,effective use of the dampers' energy dissipation mechanism,so as to protect the main structure to avoid the plastic damage,and "multimodal control" the energy dissipation effect is more significant,the condition of redistribution the energy of the ideal,the energy dissipation of the structure itself to reduce greatly.