Abstract
An analytical model focused characteristic cracks in surface of concrete structures damaged by ASR was applied to brace of bridge pier. By comparing the analysis results and candidate structure in terms of behavior of cracks, the applied model was roughly able to reproduce the behavior. Additionally, this study took particular note of steel break which should be heeded in recent years and an analytical model was proposed in order to entertain strength degradation due to chaps which occurred in bent corner of reinforcement. Then, it was clarified that reinforcement was wreaked rapid strength degradation even if bent corner of reinforcement had tiny chaps. By comparing strain in bent corner in reinforcement simulated by applied model and strain simulated by proposed model, it was indicated that steel break occurred on high probability in near boundary with different reinforcement ratio.
