牺牲阳极保护法在跨海桥梁钢筋混凝土构件防腐中的应用
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摘要
本文在室内试验基础上,以厦门天圆大桥承台钢筋混凝土构件为应用实例,采用牺牲阳极保护法,通过牺牲阳极块的锌合金不断溶解消耗,向天圆大桥承台提供保护电流,使承台钢筋混凝土构件得到保护。验证了本方法在跨海桥梁钢筋混凝土构件防腐中的有效性,施工工艺简单、防腐效果稳定、后期维护方便、经济适用,可为同类工程项目提供良好的借鉴。
On the basis of laboratory tests and taking the reinforced concrete members of Xiamen Tianyuan Bridge cap as an example, this paper adopts sacrificial anode protection method to protect the concrete members of the caps of sea-crossing bridges, which provides protection current to the cap by continuously dissolving and consuming zinc alloy of sacrificial anode blocks. The paper verifies the effectiveness of this method in anti-corrosion of reinforced concrete members of sea-crossing bridges, and shows that it is economical and applicable for its simple construction technology, stable anti-corrosion effect and convenient maintenance, providing a good reference for similar projects.
On the basis of laboratory tests and taking the reinforced concrete members of Xiamen Tianyuan Bridge cap as an example, this paper adopts sacrificial anode protection method to protect the concrete members of the caps of sea-crossing bridges, which provides protection current to the cap by continuously dissolving and consuming zinc alloy of sacrificial anode blocks. The paper verifies the effectiveness of this method in anti-corrosion of reinforced concrete members of sea-crossing bridges, and shows that it is economical and applicable for its simple construction technology, stable anti-corrosion effect and convenient maintenance, providing a good reference for similar projects.
引文
[1]德.W.v.贝克曼 ,W.施文克,W.普林兹著·阴极保护手册(电化学保护的理论与实践)[M].北京:化学工业出版社、材料科学与工程出版中心.2005.
[2] 中国船舶重工集团公司第七二五研究所.铝-锌-铟系合金牺牲阳极:GB/T4948-2002[S].北京:中国标准出版社,2002.
[3] 洛阳船舶材料所.锌-铝-镉合金牺牲阳极:GB/T4950-2002[S].北京:中国标准出版社,2003.
[4]金晓鸿,刘金顶,何传礼,李海祥,胡洁.防腐综合技术在厦门海沧大桥混凝土桥墩维修工程的应用[C]//第十二届中国科协年会论文集,2011.
[5]欧洲标准.Cathodic Protection of Steel in Concrete:EN 12696-2000[S].
[6]中交天津港湾工程研究院有限公司.海港工程钢结构防腐蚀技术规范:JTS153-3-2007[S].北京:人民交通出版社,2007.
[7]挪威标准.Cathodic Protection Design:DNV RP B401-2005.
[2] 中国船舶重工集团公司第七二五研究所.铝-锌-铟系合金牺牲阳极:GB/T4948-2002[S].北京:中国标准出版社,2002.
[3] 洛阳船舶材料所.锌-铝-镉合金牺牲阳极:GB/T4950-2002[S].北京:中国标准出版社,2003.
[4]金晓鸿,刘金顶,何传礼,李海祥,胡洁.防腐综合技术在厦门海沧大桥混凝土桥墩维修工程的应用[C]//第十二届中国科协年会论文集,2011.
[5]欧洲标准.Cathodic Protection of Steel in Concrete:EN 12696-2000[S].
[6]中交天津港湾工程研究院有限公司.海港工程钢结构防腐蚀技术规范:JTS153-3-2007[S].北京:人民交通出版社,2007.
[7]挪威标准.Cathodic Protection Design:DNV RP B401-2005.