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Maximum Wind Load Effects on a Large-Span Cantilevered Roof

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Abstract:

The paper presents a new proposal for universal wind load distribution simultaneously reproducing maximum load effects on a large-span cantilevered roof. It discusses the equivalent static wind load (ESWL) that reproduces the maximum load effects in structural members. This load is referred to hereafter as the universal ESWL. In this study, the universal ESWL is shown by a combination of eigenmodes calculated by Proper Orthogonal Decomposition (POD) analysis of fluctuating wind pressure. By applying singular value decomposition to a matrix of eigenmodes multiplied by the influence function, the optimal universal ESWL is found. This method is applied to large cantilevered roof models. The maximum load effects for bending moment and shear force are determined to estimate the universal ESWL. The maximum load effects reproduced by the universal ESWL show good agreement with those directly estimated by time history analysis.

Document Type: Research Article

DOI: http://dx.doi.org/10.2749/101686605777962865

Publication date: November 1, 2005

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    Structural Engineering International (SEI), the quarterly Journal of IABSE, published since 1991, is the leading international journal of structural engineering dealing with all types of structures and materials. SEI offers its readers a unique blend of short profiles on recent structures, and longer, in-depth technical articles on research, development, design, construction and maintenance. Articles are written by practicing engineers and academia from around the world and reflect the high standards of IABSE. IABSE Peer Review stamps are given to papers that have passed through a highly selective review process and demonstrate a significant contribution to the state of structural engineering knowledge.To recognise contributions of the highest quality, an Outstanding Paper Award is presented each year.

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