Closed-Form Prediction of the Alongwind-Induced Fatigue of Structures
Publication: Journal of Structural Engineering
Volume 138, Issue 9
Abstract
Wind-induced fatigue is a crucial topic in the design of wind-sensitive structures. Despite this, methods proposed in literature are mainly addressed to research, or they are too simplified for engineering applications. Thus, suitable engineering and standards procedures are almost totally lacking, which is a major shortcoming in structural and wind engineering. Starting from a closed-form solution (CFS) recently proposed by the authors, this paper develops a novel engineering approach to evaluate the alongwind-induced fatigue of structures and structural elements. This approach is based on a hierarchy of hypotheses that lead to a progressive simplification of the basic formulation. Two classes of formulas, referred to as Levels I and II CFSs, are obtained and critically discussed with special concern for input parameters. Level I CFS implies three further simplifications joined together by the common aim of providing refined approximations of the reference target solution. Level II CFS implies three different simplifications joined together by the common aim of providing easy solutions on the safe side. This set of CFSs is framed within a general procedure that any country, society, or engineer can easily personalize to a situation and requirement, ranging from numerical tools to manual engineering calculations and code provisions.
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Information
Published In
Journal of Structural Engineering
Volume 138 • Issue 9 • September 2012
Pages: 1149 - 1160
Copyright
© 2012 American Society of Civil Engineers.
History
Received: Jan 28, 2011
Accepted: Nov 22, 2011
Published online: Nov 24, 2011
Published in print: Sep 1, 2012
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