Experimental and theoretical studies of indirect bridge frequency measurement using a passing vehicle

0453609 - ÚTAM 2016 RIV TW eng O - Others
Urushadze, Shota - Yau, J. D. - Frýba, Ladislav
Experimental and theoretical studies of indirect bridge frequency measurement using a passing vehicle.
2015 Symposium on progress in wind engineering and structural dynamics. New Taipei City: Tamkang University, 2015 - (Wang, J.). ISBN N
R&D Projects: GA ČR(CZ) GC13-34405J
Institutional support: RVO:68378297
Keywords : indirect method * bridge health monitoring * moving load * VBI
Subject RIV: JM - Building Engineering

In this paper, an indirect bridge frequency monitoring method will be presented through theoretical formulation
and experimental verification. The idea of indirect method is based on the coupling nature of a vehicle moving
on a bridge proposed by Yang et al. (2004), in which the bridge response can be recorded by the passing vehicle.
Thus, one can extract the bridge frequencies from the response of the moving instrumented vehicle. With this
concept, this study adopted a simplified vehicle-bridge interaction model to present a semi-analytical solution of
dynamic response for a vehicle traveling on a simply supported beam, from which the vibration data of bridge
response was recorded in the instrumented vehicle. Then an experimental setup for measuring the bridge
frequency was introduced for verification of the indirect method. From the present experimental results, the
indirect bridge inspection method is applicable to monitor the dynamic characteristics of a bridge.
Permanent Link: http://hdl.handle.net/11104/0254373