Validation study demonstrates accurate gross vehicle weight estimation on a deteriorated concrete bridge using vibration data, suggesting a viable alternative to strain-based monitoring.
Key Points
To develop and evaluate a dynamic Bridge Weigh-In-Motion (B-WIM) methodology relying solely on vibration measurements to estimate vehicle weights on deteriorated bridges.
Simulated vehicular loading scenarios using a finite element model (FEM) to examine the influence of vehicle speed and transverse load position.
Implemented and experimentally validated the vibration-only monitoring approach on a deteriorated prestressed concrete bridge characterized by cracked girders, a rough deck surface, and a steep access slope.
Achieved gross vehicle weight estimation differences below 3% for a two-axle truck across varied speed conditions.
Recorded gross vehicle weight estimation differences below 15% for a three-axle tandem truck.