| 摘要 |
PROBLEM TO BE SOLVED: To provide a foundation structure capable of eliminating limitation on structure and equipment in the case of forming a foundation footing for an intermediate pier into the float structure. SOLUTION: The foundation footing as a lower construction for supporting an upper construction 1 of a bridge is formed into the float structure 10 formed of caissons, and constructed, excavating the ground, or this float structure 10 is floated in a foundation support pond 20 provided inside the coffering construction and filled with the load buffer solution to support a load applied from the upper construction 1 of the bridge with the buoyancy of the float structure 10.
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