Comparative Study of Steel Truss and Composite Truss

The Composite steel-concrete trusses can be considered as one of the most economical and efficient system for bridges especially for the greater spans above 20m. The design specification of composite trusses are only partially included in the Eurocode standards. However the type of construction can be considered as one of the most economical and efficient for bridge structure. The research has been carried out for many research on composite steel concrete bridges upto the span of 20m as indicated in the literature review. But there can be a need in future for design of greater span as there is extensive road development which depend on increase in the population and economic growth. Looking in to the future purpose of number of lanes & the span for the roads, it is decided to carry out analysis and design of the component steel – concrete bridge for a long span of 24m. The software STAAD PRO was used to Analyse & to design the structural system behaviour. The result obtained indicated that composite truss system provides a economical and efficient solution of long 24m span of composite bridge.