Civil and Environmental Engineering


Document Type


Date of this Version



Advances in Civil Engineering Volume 2013, Article ID 248575, 7 pages


Copyright © 2013 Junwon Seo et al.

Open access


A three-dimensional (3D) modeling approach to investigate nonlinear seismic response of a curved and skewed bridge system is proposed.The approach is applied to a three-span curved and skewed steel girder bridge in the United States.The superstructure is modeled using 3D frame elements for the girders, truss elements for the cross-frames, and equivalent frame elements to represent the deck. Spherical bearings are modeled with zero-length elements coupled with hysteretic material models. Nonlinear seismic responses of the bearings subjected to actual groundmotions are examined in various directions. Findings indicate that the bearings experience moderate damage for most loading scenarios based on FEMA seismic performance criteria. Further, the bearing responses are different for the loading scenarios because of seismic effects caused by interactions between excitation direction and radius of curvature.