一、概述钢桩码头、栈桥、系船墩、航标、浮筒、海上泊地、防波堤、各种钢闸门、舰船及海上钻井平台等海洋钢结构物,长年处于海洋环境诸如强烈的波浪冲击和海洋大气及海水带来的严重腐蚀之中。因此,为了延长钢结构物的使用寿命,减少维修保养费用,除设计时应考虑选用质量较高的耐蚀钢外,还必须采取各种有效防腐措施,如涂层保护、阴极保护和喷金属保护。对于腐蚀严重的浪溅区和防腐施工较困难的潮差部位,则应选择特别有效的防腐方法, I. Overview Marine steel structures such as steel piers, trestle bridges, ship piers, aids to navigation, buoys, offshore berths, breakwaters, various steel gates, ships and offshore drilling platforms have been used for many years in the marine environment such as strong wave impact and Marine atmosphere and sea water caused by serious corrosion. Therefore, in order to extend the service life of steel structures and reduce maintenance costs, in addition to the design should consider the use of high quality corrosion-resistant steel, you must also take a variety of effective anti-corrosion measures, such as coating protection, cathodic protection and spray metal protection. For the serious corrosion of the splash zone and anticorrosion construction more difficult parts of the tide, you should choose a particularly effective method of preservation,