In port pier-type structures, steel pipe piles often tend to suffer performance degradation because they are generally constructed in sever marine environment.The protective coating system is often applied to the tidal and splashed parts of the piles for preventing the performance degradation due to corrosion.The performance of the protective coating system, however, is generally degraded by material deterioration caused by ultraviolet rays and by deformation due to collision of driftage.The joint part between steel pipe pile including the protective coating system and beam of concrete superstructure is one of the most important structural parts in that structure.The joint part is subjected to the large bending moment due to berthing forces and seismic motions.
The authors have developed a new protective jacketing system which can ensure the anti-corrosion of steel pipe piles and strengthening of the joint parts by applying the Ultra High Performance-Strain Hardening Cementitious Composites, UHP-SHCC. In this paper, the large scale flexural loading test of steel tube jacketed with UHP-SHCC was performed to evaluate the structural performance of the proposed system.From the results, the UHP-SHCC protective jacketing system can contribute to improving the structural performance of steel tube．