ABSTRACT
ABSTRACT In Japan, there is a necessary to develop the new efficient investigation method for bridge decks. The authors focused the small FWD system. And there is a necessary to improve or to extend this method to evaluate the performance of road bridges. In this research, we tried to measure the vibration of bridge under impact load of small FWD system with extended new measuring method. And we also try to develop the new evaluation method for vibration data of bridges.
