EVALUATION OF RESIDUAL STRUCTURAL PERFORMANCE OF STEEL PIPE PILED PIER WITH LOCAL STEEL BAR CORROSION

Abstract

 Steel pipe piled piers are exposed to severe corroding salty environment and they should be more appropriately maintained. However, few researches have been conducted on the residual structural and seismic performance of corroded piers. The objective of this study is to clarify the effect of corroded steel bar at the RC superstructure and the junction area between superstructure and the steel pipe on the structural performance of the entire pile-supported structure. This study has been developed through the laboratory loading tests and numerical analyses. From the experiment and analysis, it is confirmed that corrosion on the superstructure has impact on the residual structural performance. However, corrosion on the reinforcement bar in haunch has minor impact on the whole behavior.