Abstract
The purpose of this paper is to clarify the behavior of steel bearing supports of 4-span curved box-girder bridges subjected to a great earthquake motion. Nonlinear dynamic response analysis was carried out for models with different curvatures, in order to investigate the influence of the curvature on the response of steel bearing support, girder and pier. Furthemore, we found out the differences with the seismic reponse, torsion moment of girder and reforce of bearing supports for the earthquake wave with single direction wave and 3 dimensionable ground motion.
