Web of plate girders in bridges are usually reinforced by welded transverse stiffeners inorder to improve their shear capacity. Due to problems associated with field welding and fatigue,welded stiffeners are not suitable for retrofitting existing bridges. Bolted stiffeners are a practicalalternative for strengthening girders that are expected to experience shear stresses in excess of theirdesig...

Based on the conceptions of energy dissipation, multi-failure and safety protection of structure, a new energy dissipation-based multi-level control system for unseating failure prevention of concrete girder bridges subjected to earthquake is proposed. The control system provides respectively two different functions including energy dissipation-based displacement restriction and unseating preve...

The long-span double-deck truss girder bridge has become a recommend structural form because of its good performance on traffic capacity. However, the vortex-induced vibration (VIV) characteristics for girders are more complicated and there is lack related research. In this research, wind tunnel tests were utilized to investigate VIV large-span bridge. Meanwhile, suppression effect aerodynamic ...

This paper discusses the ultimate strength of composite plate girders with intermediate inclined stiffeners. The inclination angle stiffener, web opening size and span length are key factors influencing performance girder. study used LUSAS software to develop 20 non-linear finite element models using stiffener different angles, sizes lengths. have an 90°, 75°, 60°, 45° 30°. plates were divided ...

Abstract The interfacial stress in a carbon fiber-reinforced polymer (CFRP) plate for strengthening the top flange of box-girder bridge was theoretically investigated. According to force analysis results structure, most unfavorable area selected modeling analysis. Using simplified beam model, CFRP plate-concrete interfacial-stress calculation model derived, and closed-form solution obtained. Eq...

Abstract The main aim of this work is a computational nonlinear analysis high strength steel corrugated-web plate girder with very detailed and realistic mesh including vertical ribs, all the fillet welds supporting areas. carried out to verify mechanical structural response under transient fire temperature conditions accounting for an efficiency accuracy three various coupled thermo-elastic mo...