在海况条件下,钢筋混凝土(R.C.)和预应力混凝土(P.C.)的耐久性和经济性比钢优越;轻质混凝土和钢纤维混凝土抗冲击和抗疲劳等性能也比较好,因此,自七十年代初期起,在海洋工程中的应用日益广泛,发展迅速。 (一)石油平台 1973年在挪威建造的Ekofish储油罐是世界上第一个大型混凝土重力式海工结构,标志着混凝土海工结构迅速发展的一个起点。迄今为止,在北海油田已建造安装了15个重力 Under sea conditions, the durability and economy of reinforced concrete (RC) and prestressed concrete (PC) are superior to those of steel. Lightweight concrete and steel fiber reinforced concrete are also relatively resistant to impact and fatigue. Therefore, Beginning of the era, the application in marine engineering is more and more widespread and developing rapidly. (I) Oil Platform The 1973 Ekofish tank built in Norway is the world’s first large-scale concrete gravity offshore structure, marking a starting point for the rapid development of concrete offshore structures. So far, 15 gravitons have been built and installed in the North Sea oilfield