| 摘要 |
PURPOSE:To perform dry construction of a dock by a method in which a caisson for dry dock gate is temporarily set as a temporary coffering dam, water in the dock is discharged, the dry dock is constructed, and water is charged to used the caisson as a gate again. CONSTITUTION:A caisson 1 made as the gate of a dry dock is towed to a setting position for temporary coffering dam of the dry dock and settled. A water stop steel plate 3 is driven on the outside of the caisson 1. Sea water in the dry dock 4 is drained, and main structures 5 for the dry dock 4 are constructed on dry basis. Sea water is again charged into the dry dock 4, the steel plate 3 is removed out, and the caisson 1 is again floated and settled into a position of gate. Dock can thus be constructed on dry basis without needs to provide any specific dam. |
