Journal ArticleDOI
Contact-Point Response for Modal Identification of Bridges by a Moving Test Vehicle
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TLDR
In this paper, the response of the contact point of the vehicle with the bridge, rather than the vehicle itself, was proposed for modal identification of bridges by a moving test vehicle, and approximate closed-form solutions were derived for the vehicle and contact-point responses, and they were verified by finite element solutions.Abstract:
The response of the contact point of the vehicle with the bridge, rather than the vehicle itself, is proposed for modal identification of bridges by a moving test vehicle. To begin, approximate closed-form solutions were derived for the vehicle and contact-point responses, and they were verified by finite element solutions. The contact-point acceleration is born to be free of the vehicle frequency, an annoying effect that may overshadow the bridge frequencies in case of rough surface. From the frequency response function (FRF) of the vehicle with respect to the contact point, it was shown that the contact-point response generally outperforms the vehicle response in extracting the bridge frequencies because it could identify more frequencies. In the numerical simulations, the contact-point response was compared with the vehicle response for various scenarios. It is concluded that in each case, say, for varying vehicle speeds or frequencies, for smooth or rough road surfaces, with or without existing traffi...read more
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Journal ArticleDOI
Measuring bridge frequencies by a test vehicle in non-moving and moving states
TL;DR: It was found that the vehicle in the non-moving state can catch more bridge frequencies than in the moving state, and the contact-point response performs better than the car-body response, which can be used to detect the first few frequencies of the bridge, including the torsional frequency.
Journal ArticleDOI
State-of-the-Art of Vehicle-Based Methods for Detecting Various Properties of Highway Bridges and Railway Tracks
TL;DR: The vehicle scanning method (VSM), an indirect approach for bridge measurement, has attracted intensive attention since it was proposed and is currently being applied to bridge measurement in China.
Journal ArticleDOI
Bridge damping identification by vehicle scanning method
TL;DR: In this article, a simple theoretical framework is presented for identifying the damping ratios of simply supported beams using a two-axle moving test vehicle, equipped with uniformly spaced accelerometers and laser sensors.
Journal ArticleDOI
Recent Advances in Researches on Vehicle Scanning Method for Bridges
TL;DR: The vehicle scanning method (VSM) has attracted intensive attention since it was proposed by Yang and co-workers in 2004 as mentioned in this paper , which is an indirect approach for bridge measurement, and has been extended to construction of mode shapes, identification of damping ratios, and detection of damages for bridges, among others.
References
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Journal ArticleDOI
Vibration Based Condition Monitoring: A Review:
E. Peter Carden,Paul Fanning +1 more
TL;DR: In this article, the state of the art in vibration-based condition monitoring with particular emphasis on structural engineering applications is reviewed, focusing on the use of in situ non-destructive sensing and analysis of system characteristics for detecting changes, which may indicate damage or degradation.
Journal ArticleDOI
Extracting bridge frequencies from the dynamic response of a passing vehicle
TL;DR: In this article, the idea of using a vehicle moving over a bridge as a message carrier of the dynamic properties of the bridge is theoretically explored in order to identify the key parameters dominating the vehicle-bridge interaction response, while illustrating the key phenomena involved.
Journal ArticleDOI
Vehicle-Bridge Interaction Element for Dynamic Analysis
Yeong-Bin Yang,Jong-Dar Yau +1 more
TL;DR: In this paper, a train is modeled as a series of sprung masses lumped at the bogie positions and a bridge with track irregularities by beam elements, and two sets of equations of motion that are coupled can be written, one for the bridge and the other for each of the sprung masses.
Journal ArticleDOI
Use of a passing vehicle to scan the fundamental bridge frequencies: An experimental verification
C.W. Lin,Yeong-Bin Yang +1 more
TL;DR: In this article, a two-wheel cart towed by a light truck is used to scan the fundamental frequency of vibration of a sustaining bridge, where the bridge vibration is received or scanned by an accelerometer installed in the cart.
Journal ArticleDOI
Vehicle–bridge interaction dynamics and potential applications
Yeong-Bin Yang,C.W. Lin +1 more
TL;DR: In this paper, the authors studied the dynamic interaction between a moving vehicle and a sustaining bridge and obtained closed-form solutions for the vertical responses of both the bridge and moving vehicle, assuming the vehicle/bridge mass ratio to be small.
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