Dynamic Analysis And Optimum Design Of The Passive Energy Dissipation System

Velocity-dependent dampers, such as viscoelastic dampers(VED) and fluid viscous dampers, set in structures can absorb parts of earthquake energy, which can ruduce structural response and damage. Since these years, many theories research and tests about energy dissipation equipment and energy dissipation systems have been done. But, with the passive energy dissipation technology development, there are some problems need further study. This dissipation is divided into seven chapters, to do some research in dynamic analysis and optimum design and parametric analysis of the passive energy dissipation system.①The article have systematically analysed the design method for passive energy dissipation systems added viscoelastic dampers. It mainly includes calculating method and parameters analysis and optimum installation of VEDs.②The article has deduced a dynamic response calculating method for passive energy dissipation systems added nonlinear fluid viscous dampers. The method has been used to investigate the influences of the parameters of single-degree-of-freedom system added nonlinear fluid viscous dampers on vibration control effects.The main content of this dissertation is as follows:1) Chapter 2 introduced mechanical properties and energy dissipation mechanism of viscoelastic material. And it also introduced conformation and calculation model and mechanical properties of VED. It analysed and discussed the practical application and calculating method and control effect and parameters design of passive energy dissipation systems added VEDs.2) Chapter 3 synthetically evaluated "Recurrent design method" and "Based onφ_i,l (φ_i,l-φ_i-l,1) guideposts design method". Then the "Location optimum practical method of Viscoelastic dampers based on the seismic response spectrum" has been deduced.3) Chapter 3 and Chapter 4 used a plane mechanics calculation model and a three-dimensional finite element spatial mechanics model to do a time-history dynamic analysis. And these models used 4 different VED optimum installation methods which based on item 2. Then, Compare calculating results of the 4 situation. Results show that the given method in this dissertation can install VEDs once on an earthquake inputting. The method is simpleness and feasibility. The control effect is credibility.4) Chapter 5 deduced a time-history dynamic analysis calculating method for passive energy dissipation systems added nonlinear fluid viscous dampers. Based on the method, Then this chapter systematically investigate the influences of the parameters of single-degree-of-freedom system added nonlinear fluid viscous dampers on vibration control effects.5) Based on this dissipation, Chapter 6 collected and generalized some design methods for energy dissipation systems added velocity-dependent dampers...