| 摘要 |
PURPOSE: A temporary bridge construction method using a shape steel provided with the device occurring upward force in the center of a span is provided to heighten economical efficiency. CONSTITUTION: The temporary bridge construction method using a shape steel provided with the device occurring upward force in the center of a span is completed by installing one or two jacks(3) to occur upward force on the lower part of a main girder(2) by widening a tension steel(4) which is bound on the base of a main girder(2) in the center of a span of a temporary bridge and the top of both bents(5) slopely. |
