Research Article
Dec 1981
Dynamic Collapse of Frames Under Wind Disturbances
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VIEW THE REPLYAuthors: Kiyotaka Morisako, Shuzo Ishida, Tsuneyoshi Nakamura, and Hatsuo IshizakiAuthor Affiliations
Publication: Journal of the Structural Division
Volume 107, Issue 12
Abstract
A parametric numerical analysis is conducted on strain-hardening multi-story frames subjected to wind disturbances generated by amplifying a recorded fluctuating wind pressure. The effect of spreading and diminishing of the strain-hardening regions has been taken into account in the one dimensional finite element formulation employed here. The dynamic behavior including in particular the dynamic collapse behavior is extensively examined and the details are presented for the first time. The effect of a fluctuating wind disturbance on a frame may be represented by the required overall plastic strength, the therefore measured by a multiplier (load factor) of the basic design wind loads. There exists a critical frame which just exhibits the dynamic collaps behavior under a wind disturbance. The corresponding critical value of the multiplier has been called the dynamic collapse gust load factor. The factor provides a rational basis for a practical safety factor and is therefore recommended for a more rational method of wind resistant design of ductile structures.
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Published In
Journal of the Structural Division
Volume 107 • Issue 12 • December 1981
Pages: 2365 - 2379
Copyright
© 1981 American Society of Civil Engineers.
History
Published in print: Dec 1981
Published online: Feb 1, 2021
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Affiliations
Kiyotaka Morisako
Asst., Dept. of Architecture, Kyoto Tech. Univ., Kyoto, Japan
Shuzo Ishida
Prof., Dept. of Architecture, Kyoto Tech. Univ., Kyoto, Japan
Tsuneyoshi Nakamura
Prof., Dept. of Architecture, Kyoto Univ., Kyoto, Japan
Hatsuo Ishizaki
Prof., Disaster Prevention Research Inst., Kyoto Univ., Kyoto, Japan
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