Effect of Strain Hardening on the Flexural Resistance of Composite Plate Girders Using HSB600 High-Performance Steel in Positive Bending
Publication: Journal of Bridge Engineering
Volume 22, Issue 10
Abstract
This study presents a new nominal flexural resistance of composite I-girder sections using high-performance steel, HSB600, in the positive bending region. Unlike conventional steels, HSB600 undergoes strain hardening immediately after yielding. To compare the flexural behavior of composite girder sections using HSB600 with that of conventional composite steel girder sections, a moment-curvature analysis was performed. To take into account the effects of strain hardening on the flexural resistance, the strain-hardening plastic moment was introduced as a substitute for the full plastic moment. An extensive parametric study using the strain compatibility method was conducted for a wide range of composite girder sections, and the relationship between the ratio of the strain-hardening plastic moment to the full plastic moment and the ductility ratio was determined. On the basis of the results of the parametric study, a factor that accounts for the strain-hardening effects is suggested as a function of the ductility ratio. A new nominal flexural resistance for the composite HSB600 girder sections is then proposed, defined as the product of the nominal flexural resistance in the AASHTO LRFD Bridge Design Specifications and the strain-hardening factor.
Get full access to this article
View all available purchase options and get full access to this article.
Acknowledgments
This research was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (NRF-2015R1D1A1A09060113). The authors express their gratitude for the financial support.
References
AASHTO. (1998). AASHTO LRFD bridge design specifications, 2nd Ed., Washington, DC.
AASHTO. (2000). AASHTO LRFD bridge design specifications, 2nd Ed. (Interim), Washington, DC.
AASHTO. (2004). AASHTO LRFD bridge design specifications, 3rd Ed., Washington, DC.
AASHTO. (2007). AASHTO LRFD bridge design specifications, 4th Ed., Washington, DC.
AASHTO. (2010). AASHTO LRFD bridge design specifications, 5th Ed., Washington, DC.
AASHTO. (2012). AASHTO LRFD bridge design specifications, 6th Ed., Washington, DC.
AASHTO. (2014). AASHTO LRFD bridge design specifications, 7th Ed., Washington, DC.
Ansourian, P. (1982). “Plastic rotation of composite beams.” J. Struct. Div., 108(3), 643–659.
Azizinamini, A., Barth, K., Dexter, R., and Rubeiz, C. (2004). “High performance steel: Research front—Historical account of research activities.” J. Bridge Eng., 212–217.
CEB (Comité Euro-International du Béton). (1990). CEB-FIP model code, Thomas Telford, Laussance, Switzerland.
Mans, P., Yakel, A. J., and Azizinamini, A. (2001). “Full scale testing of composite plate girders constructed using 485 MPa high performance steel.” J. Bridge Eng., 598–604.
Rotter, J. M., and Ansourian, P. (1979). “Cross-section behaviour and ductility in composite beams.” Proc. Inst. Civ. Eng., 67(2), 453–474.
Vasseghi, A. (1989). “Strength and behavior of composite plate girders under shear and bending moment.” Ph.D. dissertation, Univ. of Texas at Austin, Austin, TX.
Wittry, D. M. (1993). “An analytical study of the ductility of steel-concrete composite sections.” Master’s thesis, Univ. of Texas at Austin, Austin, TX.
Yakel, A. J., and Azizinamini, A. (2005). “Improved moment strength prediction of composite steel plate girders in positive bending.” J. Bridge Eng., 28–38.
Youn, S. G. (2013). “Nominal moment capacity of hybrid composite sections using HSB600 high-performance steel.” Int. J. Steel Struct., 13(2), 243–252.
Youn, S. G., Bae, D., and Kim, Y. J. (2008). “Ultimate flexural strength of hybrid composite girders using high-performance steel of HSB600 at sagging bending.” Proc., 2008 Composite Construction in Steel and Concrete VI, ASCE, Reston, VA, 680–690.
Information & Authors
Information
Published In
Copyright
© 2017 American Society of Civil Engineers.
History
Received: Sep 9, 2016
Accepted: Apr 19, 2017
Published online: Aug 2, 2017
Published in print: Oct 1, 2017
Discussion open until: Jan 2, 2018
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.