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On the Studies of a Bridge-Vehicle System

Chan, Tommy H.T. & Chan, Jeffrey H.F. (1995) On the Studies of a Bridge-Vehicle System. In Zhu, D.M. & Ko, J.M. (Eds.) International Conference on Structural Dynamic, Vibration, Noise and Control, 5-7 December, Hong Kong.

Abstract

Traditionally, dynamic effects on bridge decks brought about by moving vehicle loads, are taken into account by increasing the static loads by an impact factor. Recent researchers have found that actual impact factors can be much higher than the recommendations given in various bridge design codes of practice and hence the subject needs investigation. This paper describes the formulation of a computer based bridge-vehicle system to study the dynamic behaviour of bridge-vehicle interaction. The modelling of the bridge itself is using finite element formulation of quadrilateral flat shell elements with eccentric beam stiffeners. The vehicle is modelled as a rigid body with two-axle and four-wheel sprung load units. Because of the effect of interleaf friction in the suspension system of the vehicle, the load-deformation relationship for the spring is represented by a hysteretic bi-linear diagram. In addition, the surface roughness of the bridge pavement is considered as a stationary random process characterized by a power spectral density function. The results of the model are compared with other similar works. The verification processes for the theoretical bridge-vehicle interaction system has demonstrated that it is possible to model in-service behaviour and to achieve results which are quantitatively as well as qualitatively descriptive of actual performance. The developed computer based model can further be used for parametric studies to investigate the cause of high impact factors.

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ID Code: 12888
Item Type: Conference Paper
Additional URLs:
ISBN: 9623671881
Subjects: Australian and New Zealand Standard Research Classification > TECHNOLOGY (100000)
Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > CIVIL ENGINEERING (090500)
Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > CIVIL ENGINEERING (090500) > Structural Engineering (090506)
Divisions: Past > QUT Faculties & Divisions > Faculty of Built Environment and Engineering
Past > Schools > School of Urban Development
Copyright Owner: Copyright 1995 The Hong Kong Polytechnic University
Deposited On: 05 Mar 2008
Last Modified: 10 Aug 2011 23:31

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