Database-Assisted Wind Load Capacity Estimates for Low-Rise Steel Frames
Publication: Journal of Structural Engineering
Volume 128, Issue 12
Abstract
A comparative study is presented of the estimated wind load capacities of low-rise steel building frames based on loading patterns (magnitude and distribution) established from aerodynamic databases on the one hand, and on patterns specified in the ASCE 7 Standard on the other. The estimated capacities are based on the assumption, verified by numerous sets of calculations, and also used in the development of the ASCE 7 Standard, that the most unfavorable wind load occurs at the instant in time when the peak knee-joint bending moment is attained. The estimates are obtained from detailed inelastic finite element analyses of the frames with ultimate states associated with local and global instabilities. It is shown that the estimates based on the aerodynamic database are more realistic and risk consistent and can therefore lead to safer designs at lower costs. These estimates represent a significant advance over the ASCE 7 Standard-based estimates.
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Information
Published In
Journal of Structural Engineering
Volume 128 • Issue 12 • December 2002
Pages: 1594 - 1603
Copyright
Copyright © 2002 American Society of Civil Engineers.
History
Received: Apr 19, 2001
Accepted: Mar 12, 2002
Published online: Nov 15, 2002
Published in print: Dec 2002
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