| 摘要 |
PROBLEM TO BE SOLVED: To provide a concrete sleeper structure enabling the simplification of manufacturing steps and a reduction in weight. SOLUTION: This extra-high strength fiber-reinforced concrete sleeper structure 1 installed on the under side of a rail R comprises lateral beams 10, 10 disposed in the direction crossing the rail R and vertical beams 20, 20 crossing the lateral beams 10, 10. The lateral beam 10 is formed of a prestressed concrete structure. The vertical beam 20 is formed of a reinforced concrete structure. COPYRIGHT: (C)2008,JPO&INPIT
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