| 摘要 |
PROBLEM TO BE SOLVED: To increase a bending rigidity of a wood girder itself by inserting a flange steel plate with a strip-like deviation inhibiting steel plate into an upper flange of the girder such as a glued laminate or the like used for a main girder of a wood bridge, and inserting a deformed rod steel into its lower flange. SOLUTION: An upper flange steel sheet 3 with a strip-like deviation inhibiting steel sheet 2 is adhered to an upper flange of a wood girder 1 of a glued laminate or an LVL(Laminated Veneer Lumber) with an upper groove 4 and an upper adhesive 5. Further, a deformed rod steel 6 is adhered to a lower flange of the girder 1 with a lower groove 7 and a lower adhesive 8. Then, a strength or a flexual strength of a steel stiffened wood bridge of the constitution is much strengthened as compared with a wood bridge in which the laminate of a main girder 1 is not steel stiffened. Accordingly, ends long supports for a heavy weight vehicle can be designed. Since the steel-stiffened wood bridge has an overall light weight and can be designed in a prefabricated type, its transportation is easy and a job site execution can be simply accelerated.
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