Reliability of Wood Structural Systems
Publication: Journal of Structural Engineering
Volume 110, Issue 12
Abstract
A methodology for the study of reliability in wood structural systems under load is presented. The approach implements duration of load effects by means of a damage accumulation model, and combines it with a structural analysis of the system. The reliability under a random, varying load is then calculated at the end of the intended service life for the structure. Both strength and serviceability limit states are considered. As an example, the eliability of a flat roof under snow loads is studied. Weather data from two Canadian cities (Vancouver and Quebec) are used, and allowable roof spans are derived to satisfy a target reliability at the end of 30 yr. Load sharing and load duration adjustment factors are derived in relation to a design equation in Limit States Design format, with the condition that a prescribed reliability be associated with the resulting span.
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References
1.
Foschi, R. O., and Barrett, J. D., “Load Duration Effects in Western Hemlock Lumber,” Journal of the Structural Division, ASCE, Vol. 108, No. ST7, July, 1982.
2.
Gerhards, C. C., “Time‐Related Effects of Loads on Strength of Wood,” Proceedings, Environmental Degradation of Engineering Materials Conference, College of Engineering, Virginia Polytechnic Institute, Blacksburg, Va., 1977.
3.
Foschi, R. O., “Structural Analysis of Wood Floor Systems,” Journal of the Structural Division, ASCE, Vol. 108, No. ST7, July, 1982.
4.
Foschi, R. O., “A Discussion on the Application of the Safety Index Concept to Wood Structures,” Canadian Journal of Civil Engineering, Vol. 6, No. 1, 1979, pp. 51–58.
5.
Rackwitz, R., and Fiessler, B., “Structural Reliability under Combined Random Load Sequences,” Computers and Structures, Vol. 9, 1978, pp. 489–494.
6.
Thoft‐Christensen, P., and Baker, M., Structural Reliability Theory and Its Applications, Springer‐Verlag, New York, N.Y., 1982, p. 108.
Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 110 • Issue 12 • December 1984
Pages: 2995 - 3013
Copyright
Copyright © 1984 ASCE.
History
Published online: Dec 1, 1984
Published in print: Dec 1984
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