Reliability of Timber Fender Systems in Waterfront Facilities
Publication: Journal of Structural Engineering
Volume 127, Issue 3
Abstract
Due to the deterioration of existing timber fender systems in waterfront facilities, high performance, composite replacement components for these structures are in demand. The performance criteria for these replacement components must meet or exceed the performance of existing timber systems. For this reason, a reliability analysis of existing timber fender systems has been performed to establish (1) the level of performance in existing timber fender systems; and (2) target performance levels for new composite replacement components. The design of waterfront fender systems is based on energy considerations. The most widely used and accepted method for determining the applied energy created by the docking ship is the kinetic energy method. Based on the applied kinetic energy of the docking ship and the response of the timber elements, a load model was developed to investigate the effect of several parameters on the system reliability. Investigations were conducted to determine the effect of variability and correlation among material properties on structural reliability. Results showed that as variability decreases and correlation increases, reliability increases. The effect of load-duration assumptions on the structural reliability was also investigated to illustrate the differences in existing fender system design criteria and current timber design standards. The results of the analysis on the timber systems are being used to set a standard for wood-plastic composite elements that will be used as replacement components in these systems.
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References
1.
ASTM. ( 1998). “Standard practice for establishing structural grades and related allowable properties for visually-graded lumber.” ASTM Standard D 245–98, West Conshohocken, Pa.
2.
Ang, A., and Tang, W. ( 1975). Probability concepts in engineering planning and design, Vol. II—Decision, risk and reliability, Wiley, New York.
3.
Grading rules for west coast lumber. (1995). West Coast Lumber Inspection Bureau, Portland, Ore.
4.
Johnson, J. W. ( 1968). Relationships among moduli of elasticity and rupture: Seasoned and unseasoned coast-type Douglas fir and seasoned hemlock, Forest Research Laboratory, Oregon State University, Corvallis, Ore.
5.
Load and resistance factor design manual for engineered wood construction. (1996). American Forest and Paper Assoc., Washington, D.C.
6.
Melchers, R. E. ( 1999). Structural reliability analysis and prediction, 2nd Ed., Wiley, New York.
7.
Military handbook 1023/1—Piers and wharfs. (1987). Naval Facilities Engineering Command, U.S. Department of Defense, Washington, D.C.
8.
National design specification (NDS) for wood construction. (1997). American Forest and Paper Association, Washington, D.C.
9.
Report of the international commission for improving the design of fender systems. (1984). Permanent International Association of Navigation Congresses, Brussels.
10.
Wood handbook: Wood as an engineering material. (1998). U.S. Department of Agriculture, Forest Service, Forest Products Laboratory, Madison, Wis.
Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 127 • Issue 3 • March 2001
Pages: 238 - 244
History
Received: Jul 8, 1999
Published online: Mar 1, 2001
Published in print: Mar 2001
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