Estimation of Expected Sliding Distance of a Caisson Affected by Damage of Armor Concrete Blocks

Abstract

The damage of the concrete blocks causes their own settlement together with the sliding of the caisson. The settlement increases wave forces acting on the caisson. The bigger wave forces enlarge the sliding of the caisson. Thus the damage of the concrete blocks is closely related to the sliding of the caisson. The present paper proposes the estimation procedures of expected sliding distance of a caisson affected by the damage of the armored concrete blocks. It concludes that the insufficient weight of the armor blocks causes the damage of the blocks which affects the sliding of the caisson itself and that the necessary width of the caisson which satisfies the selected allowable value of the expected sliding distance becomes larger under the consideration of the armor block damage than under no consideration of the damage.