TECHNICAL PAPERS
Jul 1, 1988

Load Distribution in Laminated Timber Decks

Publication: Journal of Structural Engineering
Volume 114, Issue 7

Abstract

A load‐distribution analysis of transverse laminated timber decks of highway bridges is discussed. The decks may be nailed, glued, or prestressed and may be supported on closely or widely spaced girders. Using data from field testing, it is demonstrated that the load‐distribution characteristics of nailed laminated decks deteriorate with time and that the current AASHTO and Ontario methods for analyzing these decks are valid. It is also shown that the current AASHTO methods for analyzing glued laminated decks need revision. New simplified methods are presented to analyze glued or prestressed decks on widely spaced girders, and nailed decks on closely spaced girders.

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References

1.
Bakht, B. (1983). “Statistical analysis of timber bridges.” J. Struct. Div., ASCE, 109(8), 1761–1779.
2.
Bakht, B., and Jaeger, L. G. (1985). Bridge analysis simplified. McGraw Hill, New York, N.Y.
3.
Csagoly, P. F., and Tayor, R. J. (1980). “A structural wood system for highway bridges.” Proc., International Association of Bridge and Structural Engineers, p. 35/88, 157–183).
4.
Cusens, A. R., and Pama, R. P. (1975). Bridge deck analysis. John Wiley and Sons, London, U.K.
5.
Jaeger, L. G., Mansour, M., and Bakht, B. (1984). “Variability of load distribution in timber bridges.” ASCE Specialty Conf. on Probabilistic Mech. and Struct. Reliability, Berkeley, Calif., 419–423.
6.
McCutcheon, W. J., and Tuomi, R. L. (1973). “Procedure for design of gluedlaminated orthotropic bridge decks.” USDA Forest Service Res. Paper FPL 210, Forest Products Lab., Madison, Wis.
7.
McCutcheon, W. J., and Tuomi, R. L. (1974). “Simplified design procedure for glued‐laminated bridge decks.” USDA Forest Service Res. Paper FPL 233, Forest Products Lab., Madison, Wis.
8.
Ontario highway bridge design code. (1983). Ministry of Transp. and Communications, Downsview, Ontario, Canada.
9.
Standard specifications for highway bridges. (1984). American Assoc., of State and Transp. Officials, Washington, D.C.
10.
Taylor, R. J. (1984). “Wood bridge calibration study for the OHBDC.” Struct. Res. Report SRR‐83‐04, Ministry of Transp. and Communications, Dowsnview, Ontario, Canada.

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Go to Journal of Structural Engineering
Journal of Structural Engineering
Volume 114Issue 7July 1988
Pages: 1551 - 1570

History

Published online: Jul 1, 1988
Published in print: Jul 1988

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Authors

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Baidar Bakht, Member, ASCE
Princ. Res. Engr., Ministry of Transp. of Ontario, Downsview, Ontario, Canada M3M 1J8

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