Flexural Capacity Accounting for SBHS500 Steel of Composite Bridge Girders

Abstract

The positive bending moment capacity of composite steel girders is examined through study employing elasto-plastic FE analyses. The web slenderness limits of section classification for homogeneous and hybrid girders with bridge high performance steel are explored. Besides, the effects of initial bending moment due to unshored construction method on the web slenderness limit are investigated. It is shown that the noncompact web slenderness limits in conventional design standards are conservative for composite sections.