Research And Experiment Analyse On The Effect Of A New Type Asphaltum On The Base Isolation Building

Base isolation technology is one of the most efficient method for seisin resistant. By putting the isolation system between the top-structure and the base, it can enhance the damp of the building,prolong the periods , decrease acceleration response when the building was under earthquake. So, the base isolation technology is more and more favored by people in this years.In this paper, we introduce a new type asphaltum pillow about its comformation ,physical character and the instance using on base isolation building. Then, by using the bilinear model ,Benc-Wen model and stretch model to represent the nonlinear hysteretic restoring-force character of the isolation bearings, by using the Random vibration theory,equivalent linearization method,acceleration-frequency function of a base-isolation building lab model are studied. Then using wilson- #θ method and linearity acceleration method to calculate the earthquake time-history reaction of a base isolation buildings.The results indicate that the Benc-wen model and the bilinear model can couvade the restoring-force character of the isolation bearings exactly well.At last, using the bilinear model couvades the restoring-force character of the new type asphaltum,we seeing about the seism resist effect of the asphaltum pillow.