Abstract
In the railway bridge design standards, the allowable stress design method has been used. Thereafter, the limit state design method and the performance based design method were introduced in 1992 and 2009 respectively, for optimizing section design of railway bridge structures. For the purpose of reducing the construction cost, it has been a front-burner issue to investigate the different sections (e.g., compact section, non-compact section, or slender section) proposed in AASHTO and Eurocode etc. On this background, this paper investigated different design methods for steel-concrete composite railway bridges by using theoretical approach and finite element methods. Based on the results obtained in this study, when compact section was used,around 10% weight reduction of structural steel was confirmed.
