The response of orthotropic steel decks to traffic loads

• Autorzy: Dempsey A. T. , Keogh D. , Jacob B. , Carracilli J.
• Języki publikacji: EN

Abstrakty

EN

This paper describes the instrumentation and load testing of a three span orthotropic steel bridge in France. Strain gauges were attached to the underside of the orthotropic plate to measure the dynamic response of the bridge to traffic loading. Two preweighed trucks were driven across the bridge at different velocities to investigate the influence of truck speed on the dynamic amplification of the bridge. A model suitable for the prediction of the dynamic response of the bridge is described. This consists of an elaborate finite element model to determine the natural frequencies and mode shapes of the bridge and a dynamic model which uses this information to determine the dynamic response. The results of the experimentation are presented and the relationship between truck speed and dynamic amplification are shown. Finally, the loads applied to the bridge by an instrumented truck driving over it are presented and comparisons are made with the loads applied at the bridge approaches.

Słowa kluczowe

EN

traffic load; orthotropic steel deck

PL

natężenie wymiany; ortotropowy stalowy podkład

• Wydawca: Instytut Podstawowych Problemów Techniki PAN
• Czasopismo: Engineering Transactions
• Rocznik: 2000
• Tom: Vol. 48, iss. 3
• Strony: 309--328
• Opis fizyczny: Bibliogr. 7 poz., rys., tab., wykr.

Twórcy

autor

Dempsey A. T.

• University College Dublin Ireland

autor

Keogh D.

• University College Dublin Ireland

autor

Jacob B.

• LCPC France

autor

Carracilli J.

• LCPC France

Bibliografia

• Atir, STRAP, Structural Analysis programs user's manual version 6.00, ATIR Engineering Software Development Ltd., Tel Aviv 1991.
• R.W. CLOUGH and J. PENZIEN, Dynamics of structures, 2nd edition, Mc Graw Hill 1993.
• C.P. HEINS and D.A. FIRMAGE, Design of modern steel highway bridges, John Wiley and Sons, New York 1979.
• M. HUHTALA, P. HALONEN and V. MIETTINEN, Cold environmental test at Lulea; Calibration of WIM systems using an instrumented vehicle, Pre-Proceedings of the Second European Conference on Weigh-in-Motion of Road Vehicles, 409–417, B. JACOB and E.J. O'BRIEN, LISBON [Eds.], September, 1998.
• E.J. O'BRIEN and D.L. KEOGH, Bridge deck analysis, E&FN Spon, London 1999.
• W.T. THOMSON, Vibrations of structures, 4th ed., Chapman and Hall, London 1993.
• R. WEST, C&CA / CIRIA recommendations on the use of grillage analysis for slab and pseudo-slab bridge decks, Cement and Concrete Association, London 1973.