STEEL-CONCRETE-COMPOSITE RAILWAY BRIDGE

摘要

PROBLEM TO BE SOLVED: To improve the economic efficiency by reducing the manufacturing man-days and massproducing girders having the same size while using relatively costless round steel pipes which can be easily obtained in the market, in a steel-concrete-composite railway bridge. SOLUTION: In a steel-concrete-composite railway bridge in which a steel girder and a concrete floor slab supported by the substructure of the viaduct are integrally combined, a round steel pipe 1 is used as the steel girder. The round steel pipe 1 is arranged right under the track 5 laid on the concrete floor slab to directly receive the load from the track 5 by the single round steel pipe 1. Single track structures in which one round steel pipe 1 for a track is used for the main girder are parallelly laid and repective tracks 5 are supported by these respective round steel pipes.