(1 中广核工程有限公司核电安全监控技术与装备国家重点实验室， 深圳 518172； 2 大连理工大学建设工程学部， 大连 116024)

摘要: 通过美国混凝土安全壳钢衬里锈蚀的一些典型案例说明了钢衬里的锈蚀特征，论述了钢衬里的锈蚀机理，介绍了国外学者对钢衬里锈蚀后力学性能变化、钢衬里局部锈蚀对安全壳完整性和易损性的影响进行的研究，最后论述了钢衬里锈蚀检测和修复技术。 分析表明，安全壳钢衬里锈蚀包括由涂层失效引起的钢衬里内表面锈蚀和安全壳混凝土中的异物吸水导致的外表面锈蚀；钢衬里锈蚀对其强度影响不大，极限拉应变有较大程度的降低；钢衬里锈蚀深度小于原截面厚度的 50%时，锈蚀对安全壳的完整性和易损性影响不大；当钢衬里锈蚀深度大于原截面厚度的 50%时，锈蚀对安全壳的完整性和易损性将会产生较大影响。

关键词: 安全壳； 钢衬里； 锈蚀； 力学性能； 完整性； 易损性； 检测； 修复

中图分类号:TL48，TU392. 6 文献标志码:A 文章编号:1002￣848X(2022)02￣0127￣08

DOI:10. 19701 / j.jzjg.JG21029

Research progress on corrosion and repair technology of steel linear of containment in US external nuclear power plants

GUO Junying1， LI Zhongcheng1， LI Wenxu2， GONG Jinxin2

(1 State Key Laboratory of Nuclear Power Safety Monitoring Technology and Equipment， China Nuclear Power EngineeringCo.， Ltd.， Shenzhen 518172， China； 2 Faculty of Infrastructure Engineering， Dalian University of Technology，Dalian 116024， China)

Abstract: Through some typical cases of steel linear corrosion of concrete containment in the United States， the corrosioncharacteristics of steel linearwere illustrated， the corrosion mechanism of steel linear was discussed， and the research offoreign scholars on the change of mechanical properties of steel linear after corrosion and the influence of local corrosion ofsteel linear on the integrity and vulnerability of containment were introduced. Finally， the methods for detecting andrepairing the corrosion damage of steel linear were discussed. It is manifested that there are two kinds of corrosion for steellinear of containment. The first is inside surface corrosion caused by deterioration of the protective coating， and the secondis outside surface corrosion initiated by foreign material embedded in the concrete of the containment. The corrosion of steellinear has little effect on its strength， and the ultimate tensile strain is greatly reduced.When the corrosion depth of steellinear is less than 50 % of the original section thickness， the corrosion has little effect on the integrity and vulnerability ofthe containment. When the corrosion depth of steel linear is greater than 50 % of the original section thickness， corrosionwill have a great impact on the integrity and vulnerability of containment.

Keywords: containment； steel linear； corrosion； mechanical properties； integrity； vulnerability； detection； repair

∗“十三五”国家重点研发计划项目(2019YBF1900903)。

第一作者:郭俊营，学士，高级工程师，主要从事核电站安全壳设计与老化研究，Email:guojunying@ cgnpc.com.cn。

[引用本文] 郭俊营，李忠诚，李文旭，等. 美国在役核电厂安全壳钢衬里锈蚀及修复技术研究进展[ J]. 建筑结构， 2022， 52(2):127￣134. GUO Junying， LI Zhongcheng， LI Wenxu， et al. Research progress on corrosion and repairtechnology of steel linear of containment in US external nuclear power plants[J]. Building Structure，2022，52(2):127￣134.