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Compactness and Bracing Requirements for High Performance Steel Girders

Earls, C. J. / Shah, B. J. / Thomas, S. J.

The present study employs experimentally verified nonlinear finite element modeling techniques for the study of high performance steel (HPS) I-shaped bridge girders. An evaluation as to the appropriateness of using the current American bridge specification provisions for cross-sectional compactness and adequate bracing is carried out within the context of applications involving A709 Gr. HPS483W high performance steel. Based on this research, it appears that the current AASHTO flange compactness and bracing provisions are inadequate when applied to A709 Gr. HPS483W bridge girders; intense interactions between local and global buckling, as observed during the failure of the bridge girders studied herein, may be the cause. New flange and web compactness criteria, as well as new bracing criteria, are proposed in the present paper for use in the design of A709 Gr. HPS483W bridge girders.

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Compactness and Bracing Requirements for High Performance Steel Girders

Earls, C. J. / Shah, B. J. / Thomas, S. J.

The present study employs experimentally verified nonlinear finite element modeling techniques for the study of high performance steel (HPS) I-shaped bridge girders. An evaluation as to the appropriateness of using the current American bridge specification provisions for cross-sectional compactness and adequate bracing is carried out within the context of applications involving A709 Gr. HPS483W high performance steel. Based on this research, it appears that the current AASHTO flange compactness and bracing provisions are inadequate when applied to A709 Gr. HPS483W bridge girders; intense interactions between local and global buckling, as observed during the failure of the bridge girders studied herein, may be the cause. New flange and web compactness criteria, as well as new bracing criteria, are proposed in the present paper for use in the design of A709 Gr. HPS483W bridge girders.

Compactness and Bracing Requirements for High Performance Steel Girders

Earls, C. J. / Shah, B. J. / Thomas, S. J.

The present study employs experimentally verified nonlinear finite element modeling techniques for the study of high performance steel (HPS) I-shaped bridge girders. An evaluation as to the appropriateness of using the current American bridge specification provisions for cross-sectional compactness and adequate bracing is carried out within the context of applications involving A709 Gr. HPS483W high performance steel. Based on this research, it appears that the current AASHTO flange compactness and bracing provisions are inadequate when applied to A709 Gr. HPS483W bridge girders; intense interactions between local and global buckling, as observed during the failure of the bridge girders studied herein, may be the cause. New flange and web compactness criteria, as well as new bracing criteria, are proposed in the present paper for use in the design of A709 Gr. HPS483W bridge girders.

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Title:

Compactness and Bracing Requirements for High Performance Steel Girders

Contributors:

Earls, C. J. (author) / Shah, B. J. (author) / Thomas, S. J. (author)

Conference:

International Conference on High Performance Materials in Bridges ; 2001 ; Kona, Hawaii, United States

Published in:

High Performance Materials in Bridges ; 44-65

Publication date:

2003-09-05

ISBN:

DOI:

https://doi.org/10.1061/40691(2003)5

Type of media:

Conference paper

Type of material:

Electronic Resource

Language:

English

Keywords:

Compaction , Girder bridges , Bracing , High-strength concrete , Bridges , Construction , Material properties , Construction materials , Design , Finite element method

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