実橋床版から切出した鋼板接着補強RC梁の樹脂再注入による補修効果と終局耐力

抄録

The aims of this study are to investigate the repair effect and the ultimate load-carrying capacity of beam specimens, which were quarried from removed deck slabs with steel plate bonding. From the four-point bending test, the structural behavior and the load-carrying capacity of four specimens with and without steel plate bonding, three of them were repaired by the re-injection of resin, were compared and analyzed with structural calculation. The test results showed that the specimen, which was pre-loaded and induced bending cracks, recovered the bending stiffness and the load-carrying capacity after the re-injection of resin. Finally, the specimen reached the ultimate state due to the debonding of interface between the steel plate and the resin.