| 摘要 |
PURPOSE:To reduce the using cost and mooring cost of caisson dry dock by a method in which PC steel wires are thrust through holes provided in side wall and bound, and cement mortar is poured into the through holes and hardened for integral connection. CONSTITUTION:Three formworks for the three blocks, a bottol floor block 1, an intermediate block 2, and an upper block 3 for forming a caisson in a horizontally split state are built up on the ground's surface and ready-mixed concrete is placed into the formworks. After the concrete hardens, the bottom floor block 1, the intermediate block 2, and th upper block 3 are connectedly stacked up on a caisson dock on the sea. PC steel bars 9 are thrust through holes (not illustrated) provided in the side walls 1a, 2a, and 3a and bound, and cement mortar is poured into the through holes and hardened for integral connection. Since the using period of the caisson dock can be shortened, the using and mooring costs of the caisson dry dock can be reduced. |
