Effect of type on seismic performance of curved girder bridges
Curved girder bridge is widely used in expressway interchange and municipal bridge design,but it is more likely to collapse in earthquakes.Bearings play an important part in curved girder bridge.Based on the Weifang-Qingdao Expressway Jingzhi Interchange A Ramp Bridge,the effects of different bearing types such as plate rubber bearing,basin bearing and lead core rubber bearing on the seismic performance of curved girder bridge are calculated by finite element analysis.The results show that lead rubber bearing has the best performance in seismic reduction and isolation,plate rubber bearing can improve seismic performance of the superstructure,but can also lead to substructure slip due to its large deformation,it may be better used together with substructure limit devices.
curved girder bridgeseismic performancefinite element method calculationbearing type
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