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Generalized gust-front factor: A computational framework for wind load effects
Highlights ► A generalized gust-front factor (GFF) framework is proposed. ► The framework encapsulates dynamic features in gust-fronts winds. ► Modeling of gust-front winds originating from a downburst/thunderstorm is discussed. ► Results in time and frequency domains are compared and show good agreements. ► Generalized GFF with standards can be conveniently evaluated via web-based portal.
Abstract This paper presents a unified framework of a generalized gust-front factor for modeling winds in gust-fronts and their attendant load effects on structures. This is analogous to the gust loading factor, a widely recognized format used world-wide in codes and standards, for the treatment of gusts in conventional boundary layer winds. The generalized gust-front factor encapsulates dynamic features inherent in wind load effects in gust-fronts originating from winds in downbursts/thunderstorms. In view of the computational complexity of the formulation and the need to promote the usage of such a framework, a web-based portal is provided. The portal at http://gff.ce.nd.edu can be conveniently utilized to evaluate the generalized gust-front factor in conjunction with international standards. The proposed generalized gust-front factor reduces to conventional gust loading factor in the case of boundary layer winds, thus, it represents a most generalized dynamic wind load effects modeling framework on structures that is compatible with the format used in ASCE 7 or any other international standard.
Generalized gust-front factor: A computational framework for wind load effects
Highlights ► A generalized gust-front factor (GFF) framework is proposed. ► The framework encapsulates dynamic features in gust-fronts winds. ► Modeling of gust-front winds originating from a downburst/thunderstorm is discussed. ► Results in time and frequency domains are compared and show good agreements. ► Generalized GFF with standards can be conveniently evaluated via web-based portal.
Abstract This paper presents a unified framework of a generalized gust-front factor for modeling winds in gust-fronts and their attendant load effects on structures. This is analogous to the gust loading factor, a widely recognized format used world-wide in codes and standards, for the treatment of gusts in conventional boundary layer winds. The generalized gust-front factor encapsulates dynamic features inherent in wind load effects in gust-fronts originating from winds in downbursts/thunderstorms. In view of the computational complexity of the formulation and the need to promote the usage of such a framework, a web-based portal is provided. The portal at http://gff.ce.nd.edu can be conveniently utilized to evaluate the generalized gust-front factor in conjunction with international standards. The proposed generalized gust-front factor reduces to conventional gust loading factor in the case of boundary layer winds, thus, it represents a most generalized dynamic wind load effects modeling framework on structures that is compatible with the format used in ASCE 7 or any other international standard.
Generalized gust-front factor: A computational framework for wind load effects
Kwon, Dae Kun (author) / Kareem, Ahsan (author)
Engineering Structures ; 48 ; 635-644
2012-01-01
10 pages
Article (Journal)
Electronic Resource
English
Generalized gust-front factor: A computational framework for wind load effects
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Gust-Front Factor: New Framework for Wind Load Effects on Structures
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Engineering Index Backfile | 1940