Recently, FWD (Falling Weight Deflectometer), which evaluates the soundness of pavement, is used to evaluate the deterioration of bridge decks. The method has been proposed in which the degree of deterioration is evaluated based on the structural response of the deck. Although the FWD test can easily measure the impact load and the amount of deflection, it is difficult to say that the degree of deterioration can be evaluated accurately due to the local deformation of the pavement due to the impact load. Therefore, we have developed a Self-propelled Impact Vibration Equipment (SIVE) that suppresses the effects of local deformation and jumping of the pavement, measure the response acceleration of the bridge with an accelerometer installed on the pavement, and integrate the time on the second floor. We tried to evaluate the degree of deterioration of the bridge by calculating the amount of deflection of the floor slab.
