Location
Cork Institute of Technology, Cork, Ireland
Event Website
https://event.ceri2020.exordo.com/
Start Date
27-8-2020 10:30 AM
End Date
27-8-2020 11:45 AM
Description
Measuring vehicle axles weights is an important method to control traffic and monitor infrastructure. Traditional methods of measuring the static weight of vehicles at a weigh station is disruptive and time consuming. It is more cost effective and efficient to indirectly measure moving vehicle weights crossing a bridge. The weigh-in-motion concept, first proposed by Moses (1979) is an algorithm that uses measured bridge structural response (deflection, strain, …) due to passing vehicles to and a theoretical response. Moving Force identification (MFI) is a variation of the dynamic WIM algorithm that gives a force time history as a vehicle passes the bridge. Previous MFI methods measured deflection, however this approach requires a reference point, typically located at the underside of a bridge beam, to measure deflection. Thiscreates difficulties and safety issues particularly when a bridge is crossing a river or other infrastructures. However, accelerometers can be installed at the handrail of bridge, which is more safe and easier. In this paper, a new MFI algorithm is proposed that uses for the first time measured bridge acceleration data as input to compute vehicle axle weight.
Recommended Citation
Wang, Shou; McCrum, Daniel; and O'Brien, Eugene, "Acceleration Based Bridge Weigh in Motion Using Moving Force" (2020). Civil Engineering Research in Ireland 2020. 3.
https://sword.cit.ie/ceri/2020/1/3
Included in
Civil Engineering Commons, Construction Engineering and Management Commons, Environmental Engineering Commons, Geotechnical Engineering Commons, Hydraulic Engineering Commons, Structural Engineering Commons, Transportation Engineering Commons
Acceleration Based Bridge Weigh in Motion Using Moving Force
Cork Institute of Technology, Cork, Ireland
Measuring vehicle axles weights is an important method to control traffic and monitor infrastructure. Traditional methods of measuring the static weight of vehicles at a weigh station is disruptive and time consuming. It is more cost effective and efficient to indirectly measure moving vehicle weights crossing a bridge. The weigh-in-motion concept, first proposed by Moses (1979) is an algorithm that uses measured bridge structural response (deflection, strain, …) due to passing vehicles to and a theoretical response. Moving Force identification (MFI) is a variation of the dynamic WIM algorithm that gives a force time history as a vehicle passes the bridge. Previous MFI methods measured deflection, however this approach requires a reference point, typically located at the underside of a bridge beam, to measure deflection. Thiscreates difficulties and safety issues particularly when a bridge is crossing a river or other infrastructures. However, accelerometers can be installed at the handrail of bridge, which is more safe and easier. In this paper, a new MFI algorithm is proposed that uses for the first time measured bridge acceleration data as input to compute vehicle axle weight.
https://sword.cit.ie/ceri/2020/1/3
