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码头固定式钢管桩的腐蚀,一直是码头能否安全使用的关键问题。对于实桩来说,一般都刷有油漆保护,水下采用阴极保护,而潮差段因干、湿交替,浪涛冲刷,油漆易剥落而形成阳极区。因此,腐蚀变得最为严重。宝钢原料码头引桥伸入长江1600米,码头及引桥下打设有(?)900和(?)1200的钢管桩1267根。在全浸区日方设计时已采用阴极保护措施,潮差段和浪溅段也采用了涂漆保护,自钢管桩安装就位至今已有6～7年的时间了,潮差段也已呈现泛黄锈迹。为了能在大面积锈蚀前追加有效保护,宝钢总厂与中国科学院海洋研究所签订了技术合作协议,决定采用脂肪酸绷带-阴极极化联合保护法对宝钢原料码头钢管桩进行潮差段防腐试验的研究。
Corrosion of pier-fixed steel pipe piles has always been a key issue for the safe use of piers. For solid piles, paint protection is generally applied and cathodic protection is used underwater. The tidal range is replaced by dry and wet, washed by waves, and the paint easily peels off to form an anode area. Therefore, corrosion becomes the most serious. The approach bridge of Baosteel Raw Materials Wharf extends 1600 meters into the Yangtze River, and 1267 steel pipe piles with (?) 900 and (?) 1200 are drilled under the pier and approach bridge. Cathodic protection measures have been adopted in the design of the Japanese site for the fully immersed area, and the tidal range and the wave splash section have also been protected by painting. It has been 6 to 7 years since the steel pipe piles were installed in place. The tidal range is also Yellowish rust has appeared. In order to provide effective protection before widespread rusting, Baosteel Plant and the Institute of Oceanology of the Chinese Academy of Sciences signed a technical cooperation agreement and decided to apply a fatty acid bandage-cathodic polarization protection method to carry out a tidal differential section corrosion test on the steel pipe piles of Baosteel Raw Materials Terminal. Research.