To provide a port structure such as a quay wall and a revetment capable of reducing construction in site to the minimum, and having a wave dissipation function little influenced by flood and ebb of tide. 現地施工を最小限にし、潮の干満の影響の少ない消波機能を備えた岸壁、護岸等の港湾構造物を提供する。 - 特許庁