The use of a rolled wide-flange as a bridge support bearing

Abstract

The research presented in this chapter describes the results of tests pertaining to the use of the rolled wide-flange section as a bridge support beating. The beating must support the compressive load associated with the bridge live and dead loads. In the longitudinal direction, the cap girder is subject to rotation caused by the longitudinal girders. If the connection restrains the rotation, moments and forces will be produced in the cap girder, the connections, and in the pier. The resisting moment is proportional to the rotational stiffness of the connection. The center of rotation of a cap girder that is free to rotate is about the neutral axis of the longitudinal girders. Since the beatings are located near the bottom flange of the cap girder and are not coincident with the center of rotation, a horizontal displacement is produced at the bearings. Furthermore, a comparison of the connection using the rocker beating and the connection with the wide-flange bearing is also highlighted in this chapter.