Seismic Upgrading of Rigidly Connected Steel Truss Structures by Installing BRBs

Abstract

It has been shown that one of the most efficient ways for seismic performance upgrading of steel bridges is to install energy dissipation devices (seismic dampers), such as buckling-restrained braces (BRB). There are various studies on seismic performances of isolated BRB's, however, few experiments exist in which BRBs are installed as part of a truss structure so far. This study aims at confirming the seismic performance upgrading effect of a truss structure by BRB.