A multiplexed Bragg Grating optical fiber monitoring system was designed and retrofitted to an in-service interstate highway bridge. The structure is a two span continuous, composite steel girder bridge with a reinforced concrete deck. A network of 64 sensors was used to measure the strain at several locations in the bridge, with sensors bonded to the top, bottom flange and web of the girders. The installed system was used for a dual purpose: structural evaluation as well as traffic monitoring. Vehicle speed, vehicle count, and traffic statistics are extracted from the data. A fatigue analysis of the bridge is performed.
Structural and Traffic Monitoring of an Interstate Bridge Using Optical Fiber Sensors
Structures Congress 2000 ; 2000 ; Philadelphia, Pennsylvania, United States
2000-04-27
Conference paper
Electronic Resource
English