橋梁の耐震(3)

[I-292] Cyclic loading test of RC pier reinforced with seismic retrofit with Ultra high strength Fiber Reinforced Mortar that can be cast in place

〇Takuya Iwamoto¹, Satoru Kobayasi¹, Sogabe Naoki¹, Shinnichi Yamanobe¹ (1.KAJIMA CORPORATION)

Keywords:seismic retrofitting method, RC bridge pier , ultra-high-strength fiber-reinforced mortar , deformation performance

We are developing a seismic retrofitting method which improve deformation performance without changing the cross-sectional dimensions by replacing of the cover of existing RC bridge pier that plasticize during an earthquake with a cast-in-place ultra-high-strength fiber-reinforced mortar including crack-inducing joints. In this study, we carried out cyclic loading tests of RC pier model specimens reinforced by this method to verify the effect of improving deformation performance. As a result, it was confirmed that the deformation performance of RC column members was improved by about 40% by reinforcing with this method.