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http://dx.doi.org/10.7781/kjoss.2014.26.3.205

Flexural Resistance and Ductility Ratio of Composite Hybrid I-Girder using HSB High Performance Steel in Positive Bending  

Choi, Dong Ho (Department of Civil and Environmental Engineering, Hanyang University)
Lim, Ji Hoon (Department of Civil and Environmental Engineering, Hanyang University)
Publication Information
Journal of Korean Society of Steel Construction / v.26, no.3, 2014 , pp. 205-217 More about this Journal
Abstract
In this study, flexural strength and ductility requirements of composite hybrid steel I-girder with its HSB(high performance steel for bridge) applied to tension flanges are examined in positive bending. In AASHTO LRFD specification, flexural strength and ductility requirements of composite I-girder in positive bending are specified in terms of plastic moment and plastic neutral axis that are derived from plastic behavior of conventional steel. However, plastic zone cannot be defined clearly from the stress-strain behavior of HSB unlike the behavior of conventional steel. Therefore, through idealized stress-strain curves of HSB, the plastic moment of composite hybrid steel I-girder with its HSB applied to tension flanges is defined by assuming the plastic zone of HSB. By using the consequences of numerical analysis regarding arbitrary cross-sections that have various dimensions, ductility requirements and flexural strength of composite hybrid I-girder with its HSB applied to tension flange are proposed.
Keywords
High performance steel; Positive bending; Flexural strength; Ductility ratio; Composite hybrid I-girder; HSB800;
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Times Cited By KSCI : 3  (Citation Analysis)
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