| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a variable gradient levitation type slipway pier, installable without large repair work to a foundation such as a revetment, easily attaching-detaching a connection part in a short time, and excellent in stability in use and convenience in vertical installation work such as a small ship.SOLUTION: The variable gradient levitation type slipway pier is composed of: a simple attaching-detaching hinge device installable in an end part such as a pier; an upper slipway floor board of a variable gradient having in an end part a bracket installable in the hinge device, bendable connection means joined in the longitudinal sectional direction to the upper slipway floor board; an intermediate part slipway floor board connected to the connection means; and a lower slipway floor board joined via the connection means bendable with the intermediate part slipway floor board or unbendable connection means rigidly joined at a constant angle. The variable gradient levitation type slipway pier is provided with one or more of float means each on the water surface side of at least the intermediate part slipway floor board and in the tip water surface side lateral direction of the lower slipway floor board, and among the float means, float means provided on the water surface side of the tip water surface side of at least the lower slipway floor board is variable float means capable of adjusting buoyancy.</p> |
