EFFECT OF CHANGE IN CURVATURE AND GRADIENT ON BRIDGE BEARING REACTIONS

Abstract

Bearing is very small part of bridge compared to all other components. Although it is a small part it requires
more attention as entire load is transmitted from super-structure to sub-structure through bearings. Bearing not only
helps to resist or transfer the deformations of super-structure with respect to sub-structure which are unavoidable in case
of high altitude and large span bridges but also transfer the force of super-structure to sub-structure . This study includes
effect of geometry of a bridge on selection of bearing. To demonstrate effect of geometry on variation in reactions , a box
girder bridge with different radius of curvatures and different gradient values is analyzed in CSI-BRIDGE software.