Study Of Anti-seismic Property Of Continuous Girder Bridge

In once the bridge project damaged in the earthquake disaster, Will brings greatdifficulties to the earthquake relief and reconstruction work. So the seismic design ofthe bridge is very important. For ordinary prestressed concrete bridge an example, inisolation design, The measures are commonly used high damping rubber bearings.High damping rubber can dissipation earthquake energy in the earthquake. Protectionbridge structure are not destroyed or will damage to lowest.This article rely on the actual engineering example, considering effect of pilesand soil, Using high damping of the rubber bearings of prestressed concretecontinuous beam shock absorption effect when the process analysis. Firstly this paperintroduces the basic theory of seismic response analysis. establish the calculationmodel， comparative analysis the dynamic characteristics of the twocircumstances:don’t consider of pile soil effect, considering the effect of pile soil.Then,analysis the bridge structure using common slab rubber bearings and high dampingrubber support with the method of time history analysis. Analyzed the dynamicresponses. analysis the bridge structure’s seismic response with the pile soil effect.Find pile soil effect has great effect on the displacement of the structure. Calculatedthe rubber bearing of high damping shock absorption effect. Through calculating andcomparing the analysis found that whether seismic wave along the bridge or bridgehorizontal to the incentive, High damping of rubber bearing has good shockabsorption effect.