Abstract
The nondestructive test (SIT) using the impact wave was applied to the investigation of foundation piles in Hanshin Expressway damaged by Hyogoken-Nambu Earthquake. On application of the test, the authors developed an analytical technique for the measured wave data, to remove some effects of the multiple reflected waves caused by the footing or the damage at around the top of pile. By comparing the analytical results with the visual investigated data, it was confirmed that the developed analytical technique was well applicable to the damage investigation of piles. Moreover, the authors tried to apply SIT with the developed analytical technique to damage investigation of piles in reclaimed ground, followed by elucidating the correlation between the degree of damage of piles and the residual displacement of ground or foundation.
