Effect of high strength reinforcement in RC jacketing for seismic retrofit of bridge column on anchorage capacity and performance of seismic retrofit

Abstract

The effects of the anchorage length of the post-anchored SD490 bars into the existing footing and the spacing of those bars for the longitudinal reinforcement in RC jacketing on the anchorage capacity were studied and details of the post-anchored SD490 bars were verified. Furthermore, a pier wall model retrofitted by the RC jacketing was designed with the verified details for the post-anchored SD490 bar, and a cyclic loading test was conducted for the retrofitted pier wall model. Test results show that the post-anchored SD490 bars performed well and the increase of the flexural strength coincide with the expected target.