The Analysis Of Seimsic Fortification Of High-Rise EBSF With Viscoelastic Damper

The construction vibration control is one of the hot problems within the seismic fortification techniques now. The viscoelastic damper and the application of viscoelastic damper in the high-rise Eccentrically braced steel framein this paer,are part of the study about the application of the dissipate energy and reduce seismic responses techniques. The visconelastic damper that made of viscoelastic material is a kind of representative passivity control devices.It reduces the seismic response of structure by adding the damping and dissipating the vibration energy of the structure. Because this device is simply and the components are cheap, the visconelastic damper has a broad application foregroud.Firstly,this thesis presents the relevant developing situation of EBSF and VED inside and outside china,then analyzes the mechanics performance of viscoelastic material and viscoelastic damper, discusses the design method of the dissipate energy and reduce seismic responses structure system.Lastly,some examples are presented about frame, frame-central support,EBSF with VED about different lengths of active beam link and different types of brace.Then those examples are caculated by finite element analytical software SAP2000.Finally,after analyzing the results of calculating,this thesis presents some conclusions which are applicable to structural designs.