| 摘要 |
PURPOSE:To dissipate wave through effective reduction against a wave force, by a method wherein a wave absorbing surface is formed on the front of a caisson body, a retardation basin for overflow is formed on the body, and drainage holes, being open to the inshore side, are provided. CONSTITUTION:A wave absorbing surface is formed on the front on the inshore side of a caisson body 1, and a wave dissipation chamber A covered with an upper surface slit wall body is formed. A retardation basin, having a capacity enough to allow for retardation of overflow and being formed with concrete structure at the upper part thereof, is formed on the caisson body 1. Drainage holes 7, which are of sufficient size and number to complete retardation of the retardation basin 6 during a time in which a subsequent wave breaks upon, are formed to interconnect the retardation basin 6 and the inshore side. This enables provision of wave dissipation structure having a high wave dissipation effect, and permits economical design of a breaker and a revetment. |
