A Horizontal Loading Test of Viaduct Structure Model Retrofitted by Arc Shaped Damper

Synopsis When considering social function of railway viaduct as infrastructure, less damage is expected even against significant earthquake such as the future Tokai and the Tonankai Ealihquake. Response control technique with damping device can be one of alternative solutions. In responding, authors have developed the arc shaped damper retrofit technique. In order to investigate applicability of the proposed damper to rail way viaduct structures, horizontal loading test for verification were conducted focusing on strengthening and response control effect. Following results were obtained: the existing structure model provided post yielding shear failure, while retrofitted structure model assured flexural yielding ductile behavior with high energy absorption.