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.

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Aug 27th, 10:30 AM Aug 27th, 11:45 AM

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