跨海大桥承台钢套箱底板对阴极保护系统的影响  

Impact of sea-crossing bridge's bottom plate of steel cofferdam on the cathodic protection system

作　　者：沈静文[1] 朱锡昶[1] 胡少伟[1] 

机构地区：[1]南京水利科学研究院,江苏南京210024

出　　处：《水运工程》2010年第2期88-91,共4页Port & Waterway Engineering

摘　　要：跨海桥承台采用钢底板封底,诸多因素使得钢底板与钢管桩之间绝缘性难以保证。钢底板为裸钢,连入钢管桩阴极保护系统影响较大。分析电阻法测量法不能准确判断钢底板与钢管桩的电连接的原因,认为采用半电池电位法测量更为可靠,同时分析钢底板对钢管桩阴极保护的发射电流和使用寿命的影响程度,提出相应的补救措施。Since the pile caps of sea-crossing bridge use steel plate at bottom, there are many factors that make it difficult to ensure the insulation between the steel bottom plate and steel pipe p bottom plate is of bare steel, and the connection with steel pipe piles leads to a greater protection system. It is believed that the use of half-cell measurement method is more reliab iles. Because effect on the le because the the steel cathodic analysis resistance measurement method can not accurately identify the reason of electric connection between steel bottom plate and steel pipe piles. In addtion the extent that the steel bottom plates impact on the emission current and service life of the steel pipe＇s pile cathodic protection is analyzed and the corresponding measures are proposed.

关 键 词：跨海大桥 钢管桩 钢(套箱)底板 阴极保护 

分 类 号：TU503[建筑科学—建筑技术科学]