The Block Armored Caisson-Type Seawall

Abstract

Seawalls in deep-sea areas with severe wave conditions are quite expensive to construct. In order to reduce the costs for the construction of such structures, the authors devised three types of composite-type seawalls, and evaluated their performance through hydraulic model tests. Of these three, one type of sea wall (what the authors call Block Armored Caisson-type Seawall) showed the most favorable results in terms of overtopping prevention and cost-effectiveness. Furthermore, in order to establish design methods for this type of seawall, hydraulic model tests and numerical analysis were conducted. The tests and analysis also yielded useful results for establishing wave overtopping estimation method and wave force evaluation method. Through these tests and analysis, it was founded that the Block Armored Caisson-type Seawall has better performance than conventional composite-type ones, and is one of the most practical structures for deep-sea areas subject to severe wave conditions.