外加电流阴极保护技术在跨海大桥耐久性设计中的应用推广

结构的耐久性能一直是工程界研究的一个主要问题,在跨海大桥的耐久性设计方面,在国内,目前普遍选择牺牲阳极法作为阴极保护方法,而在国外跨海大桥的防腐保护中,外加电流法已经成为一种最常用的阴极保护方法。本文着重介绍外加电流法的基本原理及在杭州湾跨海大桥中的应用,供其它跨海大桥及港口工程参考。

The Application and Promotion of Impressed Current and Cathode Protection Technology in Durability Design for Crossing Sea Bridge

The durability of structure has been a major problem in engineering research,as regards to the durability of bridge design,in the country,it now generally chooses sacrificial anode as cathodic protection method,while in the foreign countries,bridge＇s corrosion protection,and the impressed current method has become one of the most common method for cathodic protection.The paper focuses on the basic principles of applied current law and its application in Hangzhou Bay Bridge which provides construction reference for the crossing sea bridge.