海工结构复合材料包覆隔离防腐技术研究

Research on the Technology of Coating,Isolation and Anticorrosion of Marine Structure Composite Materials

引发海工结构承载基础腐蚀的因素众多,除了海水化学腐蚀以外,还受到洋流、海浪的冲击和生物腐蚀影响,因此腐蚀问题一直是影响海工结构使用寿命的主要因素。针对海上风电承载基础结构的受力特点和海水环境,提出了一种海洋防腐新技术,采用耐腐蚀的纤维增强树脂复合材料将海水腐蚀最严重的海水飞溅区的承载基础包覆隔离,避免其被海水腐蚀,并设置监测装置监测包覆隔离的有效性,对防护层破损情况定位进行监测以便及时维护。而承载基础的其余区域采用耐腐蚀涂层,该设计提高了整个海洋承载基础最易腐蚀区域的耐腐蚀性能,也大大提高了海洋承载基础的整体耐腐性,延长了整个结构的使用寿命。

There were many factors that lead to the corrosion of the bearing foundation of marine structures.In addition to the chemical corrosion of seawater,it was also affected by the impact of ocean currents and waves and biological corrosion.Therefore,corrosion had always been the main factor affecting the service life of marine structures.According to the stress characteristics of offshore wind power bearing infrastructure and seawater environment,a new marine anticorrosion technology was proposed.Corrosion resistant fiber reinforced resin composite material was used to coat and isolate the bearing foundation of seawater splash zone,which waas the most serious corrosion in seawater,so as to avoid corrosion by seawater.Monitoring device was set to monitor the effectiveness of coating isolation and locate the damage of protective layer for timely maintenance.The rest of the bearing foundation was coated with corrosion resistant coating.The design not only improved the corrosion resistance of the most corrosive area of the whole marine bearing foundation,but also greatly improved the overall corrosion resistance of the marine bearing foundation and prolonged the service life of the whole structure.