Experimental Study On Mechanical Properties And Practical Simulation Of The New Viscous Dampers

Energy dissipation technology is means place energy dissipation damping device in the suitable location of the structure.Through these preset energy consuming device to consume structure’s response under the effect of wind vibration and seismic.Then,makes the seismic energy dissipation and the structure under protection.Viscous fluid damper is a new type of energy dissipation damping device. Study of viscous dampers at abroad is Earlier than domestic, and achieved good effect of energy consumption in the engineering application. The domestic research started relatively later, but in recent years, more and more scholars begin to pay attention to the study of viscous damper.At the same time,viscous damper that many structures are planted in domestic has achieved good results and economic benefits. Most use of foreign advanced damper for damping energy consumption of important structure.we have a distance to the foreign advanced level in technology. As a result,researching the good performance of viscous liquid damping apparatus has an important significance.1 、 In this paper, through the introduction of the energy dissipation of viscous liquid damper damping theory, and from the perspective of energy dissipation mechanism of the analysis, compared the performance of different structure forms of viscous fluid damper that several are existing and its advantages and disadvantages. Then,introduces the restoring force model of viscous liquid damper and the calculation formula that is given by researchers of abroad. Based on ordinary viscous dampers, developed a new type of viscous fluid damper,and a large number of mechanical properties test were made.2 、 Study the effect of damping that output force by loading frequency, loading displacement and adjustable pre-tightening force and viscous medium, and according to the results, the design was improved.3、Through the restoring force model regression calibration the performance parameters of the damper.Using Midas/civil that a large finite element software to make the seismic time history analysis of bridge test model which resettlement for viscous dampers.The results show,structure vibration reduction effect is significant after setting viscous damper. Through the analysis of the effect of different parameters under different damping curve, obtained the optimized parameters of damper.Finally, according to contrast the results of the test and modeling,verify the feasibility of the new type of viscous dampers.