The closed-end concrete caisson for the out wave embankment, construction manner null of the out wave embankment which uses that and the out wave embankment which uses the same concrete caisson

摘要

PURPOSE:To simply and efficiently construct a breakwater by a method in which a bottom concrete caisson having window holes in the surrounding wall is supported on the bottom ground under water by legs integrated with the caisson and resistance piles piercing the bottom wall of the caisson. CONSTITUTION:Resistance piles B1 are set on the bottom ground 15 under water and rubble 16 is charged and roughly leveled and roughly leveled. A bottom concrete caisson A having window holes in its front and back walls 1 and 2 is lifted and lowered on the rubble mound 16 by a crane on ship, and legs d1 and d2 are penetrated into the rubble mound 16 and the bottom ground 15 under the weight of the caisson a and also by jet water from pressure water paths 13 and 14. Reinforcing bars are adequately set on the recessed inside bottom of the caisson A where the heads of the piles B1 are piercingly positioned. Concrete D1 is placed to bury the heads of the piles b1.