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Dalhousie University

1. Mantha, Christopher. Behaviour and Strength of Steel Twin Girder Systems with Torsional Braces.

Degree: Master of Applied Science, Department of Civil Engineering, 2014, Dalhousie University

This study is motivated to investigate the behaviour and strength of beams with only discrete torsional bracing. The experimental program of a scaled twin-girder system with different arrangements of lateral and torsional bracing was conducted. Concurrently, a finite element model was developed and verified with the test results. A parametric study using the finite element model was conducted to study further the effect of girder spacing, cross-frame stiffness, and number of cross-frames on the lateral torsional stability of the twin-girder system. Results showed that the girder spacing and number of cross-frames had the most significant effects on the critical moment of girders braced with only torsional braces. Changing the cross-frame member stiffness did not result in any marked change in the critical moment. The comparison of numerical results with design equations contained in the current CSA S16 (2010) and S6 (2006) standards showed that a stiffness requirement for the torsional brace should be implemented. Advisors/Committee Members: n/a (external-examiner), Dr. Hany El-Naggar (graduate-coordinator), Dr. Jane Thorburn (thesis-reader), Dr. Dmitry Garagash (thesis-reader), Dr. Yi Liu (thesis-supervisor), Not Applicable (ethics-approval), Not Applicable (manuscripts), Not Applicable (copyright-release).

Subjects/Keywords: Lateral-torsional buckling; Twin girder systems; Discrete torsional bracing; Effective length modifier; Ideal torsional brace stiffness; Critical moment

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Mantha, C. (2014). Behaviour and Strength of Steel Twin Girder Systems with Torsional Braces. (Masters Thesis). Dalhousie University. Retrieved from http://hdl.handle.net/10222/53981

Chicago Manual of Style (16th Edition):

Mantha, Christopher. “Behaviour and Strength of Steel Twin Girder Systems with Torsional Braces.” 2014. Masters Thesis, Dalhousie University. Accessed December 05, 2020. http://hdl.handle.net/10222/53981.

MLA Handbook (7th Edition):

Mantha, Christopher. “Behaviour and Strength of Steel Twin Girder Systems with Torsional Braces.” 2014. Web. 05 Dec 2020.

Vancouver:

Mantha C. Behaviour and Strength of Steel Twin Girder Systems with Torsional Braces. [Internet] [Masters thesis]. Dalhousie University; 2014. [cited 2020 Dec 05]. Available from: http://hdl.handle.net/10222/53981.

Council of Science Editors:

Mantha C. Behaviour and Strength of Steel Twin Girder Systems with Torsional Braces. [Masters Thesis]. Dalhousie University; 2014. Available from: http://hdl.handle.net/10222/53981

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