| 摘要 |
PROBLEM TO BE SOLVED: To provide a continuous beam bridge structure capable of easily introducing prestress to an intermediate supporting point of a continuous beam bridge. SOLUTION: A corrugated steel plate wave 11 is placed to a steel girder 1 part in an intermediate supporting point of a continuous beam. Prestress is introduced to a concete floor slab 2 in the intermediate supporting point placing the corrugated steel plate wave 11 thereto. Prestress can be easily introduced to the intermediate supporting point of a continuous beam bridge. A space for introducing prestress is not required, introduced prestress is clarified, and even when prestress is decreased by drying shrinkage and creep, optimum prestress can be always reintroduced. When reintroduction of prestress is used together with prestress introduction in the direction of a bridge axis by jack up/down, more accurate prestress can be introduced.
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