摘要
以某化工码头钢管桩阴极保护更新项目为依托,针对易燃易爆环境下传统水下焊接安装牺牲阳极存在的动火作业安全隐患问题,系统优化了牺牲阳极阴极保护系统的设计与施工方案。通过计算保护电流需求、科学选型阳极规格并验算抱箍系统螺栓、钢板等部件的受力状态,确定抱箍式牺牲阳极系统方案,并聚焦施工重点问题,制定了相应的施工工艺与管控措施。安装后钢管桩保护电位稳定在-991耀-1008 mV(相对于海水Ag/AgCl参比电极),满足规范要求。该方案为易燃易爆环境下实施阴极保护提供了安全可行的解决方法,可供类似工程借鉴和使用。
Based on a cathodic protection renewal project for steel pipe piles at a chemical terminal,aiming at the safety hazards of hot work in traditional underwater welding installation of sacrificial anodes in flammable and explosive environments,the design and construction scheme of the sacrificial anode cathodic protection system was systematically optimized.The hooptype sacrificial anode system scheme was determined by calculating the protective current demand,scientifically selecting anode specifications,and checking the stress state of components such as bolts and steel plates of the hoop system.Focusing on key construction problems,corresponding construction processes and control measures were formulated.After installation,the protective potential of steel pipe piles was stabilized at-991 mV to-1008 mV(relative to the seawater Ag/AgCl reference electrode),which meets the specification requirements.The scheme provides a safe and feasible solution for implementing cathodic protection in flammable and explosive environments,and can be referenced and applied in similar projects.
作者
隋吉林
李云飞
杨太年
SUI Ji-lin;LI Yun-fei;YANG Tai-nian(CCCC First Harbor Consultants Co.,Ltd.,Tianjin 300220,China;CCCC Tianjin Port Engineering Institute Co.,Ltd.of CCCC First Harbor Engineering Co.,Ltd.,Tianjin 300222,China)
出处
《中国港湾建设》
2026年第3期62-66,共5页
China Harbour Engineering
关键词
易燃易爆
钢管桩
牺牲阳极
阴极保护
抱箍安装
flammable and explosive
steel pipe piles
sacrificial anode
cathodic protection
hoop installation
