Integrating Piezoelectric Sensors for Bridge-Weigh-In-Motion

Abstract

<p>This paper addresses the outcomes of implementing a Bridge Weigh-In-Motion (BWIM) system in Australia, as an ongoing case study. The project incorporates piezoelectric traffic sensors to inform axle mass estimations using bridge girder strains. Axle masses estimated via piezoelectric traffic sensor data are used to inform an optimisation process that compares strain data and mid-span unit influence lines to converge on more accurate mass estimations than attained through strain data alone. Utilising piezoelectric sensors in combination with strain gauges can enhance the accuracy of axle mass measurements, thereby informing engineers with vital information to improve the lifespan, maintenance requirements, and hence sustainability of the structure. This comprehensive approach provides insights into the practical application, benefits and limitations of piezoelectric traffic sensor supported BWIM systems for infrastructure management.</p>