Experimental investigation of drive-by bridge inspection

This study presents a vibration-based health monitoring of short span bridges by<br/>an inspection vehicle. How to screen health condition of short span bridges in terms of the<br/>drive-by bridge inspection is described. Feasibility of the drive-by bridge inspection is<br/>investigated through a scaled laboratory moving vehicle experiment. The feasibility of using an<br/>instrumented vehicle to detect the natural frequency and changes in structural damping of a<br/>model bridge is observed. Observations also demonstrate possibility of diagnosis of bridges by<br/>comparing patterns of identified dynamic parameters of bridges through a periodical<br/>monitoring. It is confirmed that the method for damage identification under a moving vehicle<br/>identifies the damage location and severity well.