Research Article
Nov 1969
Modeling of Structures Subjected to Wind Waves
Publication: Journal of the Waterways and Harbors Division
Volume 95, Issue 4
Abstract
The difficulties inherent in the direct determination of loads on off-shore structures which are exposed simultaneously to wind and waves make it desirable to test a model of the structure in the laboratory. It is shown herein that scaling of the structure and the loads due to waves is possible by using waves which are generated by blowing air over the surface of a laboratory channel, and by choosing a model material with an appropriate modulus of elasticity. Fully developed wind generated waves are found to be determined in magnitude, frequency, and spectral shape by Froude number scaling. The structural response obeys Cauchy number similarity, which is interpreted as implying equality of the ratios of peak frequency of the spectrum to natural frequency of the structure. The wave modeling aspects of the method are illustrated with an example. Some consideration is also given to dynamic wind load modeling and to the question whether simultaneous modeling of both the wave and the wind forces is possible in a laboratory. In principle, this appears feasible, but for sufficiently large scale models, fetch lengths may be required which are larger than typical laboratory channels.
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Published In
Journal of the Waterways and Harbors Division
Volume 95 • Issue 4 • November 1969
Pages: 491 - 511
Copyright
© 1969 American Society of Civil Engineers.
History
Published in print: Nov 1969
Published online: Feb 12, 2021
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Authors
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Erich J. Plate, M.ASCE
Visiting Scientist, Radiological Physics Div., Argonne, Ill.; formerly Prof. of Civ. Engrg., Colorado State Univ., Ft. Collins, Colo.
John H. Nath, M.ASCE
Assoc. Prof. of Civ. Engrg., Colorado State Univ., Ft. Collins, Colo.
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ASCE Library Cards let you download journal articles, proceedings papers, and available book chapters across the entire ASCE Library platform. ASCE Library Cards remain active for 24 months or until all downloads are used. Note: This content will be debited as one download at time of checkout.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.