CFRP-钢管混凝土桩基腐蚀特性试验研究  

Experimental study on corrosion characteristics of CFRP-concrete filled steel tube pile foundation

作　　者：董洪静 谭德银[1,2,3] 刘志军 庄宁 DONG Hong-jing;TAN De-yin;LIU Zhi-jun;ZHUANG Ning(CCCC Fourth Harbor Engineering Institute Co.,Ltd.,Guangzhou 510230,China;CCCC Key Lab of Environmental Protection&Safety in Foundation Engineering of Transportation,Guangzhou 510230,China;Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai),Zhuhai 519000,China;College of Harbor Coastal and Offshore Engineering,Hohai University,Nanjing 210098,China)

机构地区：[1]中交四航工程研究院有限公司,广东广州510230 [2]中交交通基础工程环保与安全重点实验室,广东广州510230 [3]南方海洋科学与工程广东省实验室(珠海),广东珠海519000 [4]河海大学港口海岸与近海工程学院,江苏南京210098

出　　处：《水运工程》2021年第6期26-32,49,共8页Port & Waterway Engineering

摘　　要：海洋湿热环境下高桩码头桩基的腐蚀破坏是影响结构安全的重要因素之一,是提升高桩码头使用寿命的瓶颈。基于室内海洋湿热环境模拟系统以及法拉第电磁感应定律,采用外接直流电源的方法进行人工加速腐蚀;运用半电池电势理论,依据腐蚀越严重、电势值越高的规律对CFRP-钢管混凝土桩基的腐蚀特性进行定量、定性研究。结果表明,桩基腐蚀越严重,电势值越高;粘贴两层CFRP比粘贴一层CFRP的防腐效果更优。The corrosion damage of pile foundation is one important factor affecting the safety of structures under the humid and hot ocean environment,and it is the bottleneck of increasing the service life of piled wharves.Based on the simulation system of indoor marine humid and thermal environment and Faraday s law of electromagnetic induction,we apply the method of external DC power supply to carry out the artificialy accelerated corrosion behavior,study the corrosion characteristics of CFRP-concrete filled steel tube pile foundation based on the law of more serious corrosion and higher potential value by using the theory of semi-battery electric potential.The results show that the more severe the corrosion is,the higher the potential value is.Two layers of CFRP are more effective than one layer of CFRP.

关 键 词：碳纤维增强复合材料(CFRP) 钢管桩 腐蚀 

分 类 号：TU593[建筑科学—建筑技术科学] U655.54[交通运输工程—港口、海岸及近海工程]