Application of Drone Robot Measurement to Concrete Railway Bridge Inspection

Abstract

　In order to improve the method of soundness inspection of railway bridges, remote inspection techniques using drone robots have been developed by Railway Technical Research Institute. Drone robots have been developed to perform inspections of concrete structures while running beneath the underside of bridge girder using self-propelled crawlers. The systems using a drone robot can conduct close-up shooting, reinforcement explorations and hammering test of the under-side and side surfaces of concrete structures. In addition to those, it can also analyze the measured image data and sound data with AI diagnostic techniques.