摘要
分析了海洋环境下钢筋混凝土结构的破坏形态,其主要原因是受到了氯离子的侵蚀。在氯离子的作用下,钢筋发生严重锈蚀,最后导致开裂,文中对这一过程进行了详细的阐述,并且对锈蚀量进行了评估。在此理论基础上,建立钢筋锈蚀的截面积模型,基于Fick定律对氯离子的渗透、临界浓度、扩散系数等进行了量化处理,建立钢筋的劣化跟抗力劣化的模型,从而对混凝土钢筋结构的可靠度进行分析。
This paper analyzes the failure modes of reinforced concrete structures in marine environment, which is mainly influenced by the chloride ion erosion. Under the action of chloride ions, reinforced steel bars are corroded seriously, leading to cracking. We carry out this process in detail, evaluate the amount of corrosion, and then establish a cross-sectional area model of steel corrosion. Based on Fick＇s law, the quantified treatment of chloride ion penetration, critical concentration, and diffusion coefficient, etc. are processed. We establish the deterioration model of steel with resistance deterioration, and analyze the reliability of the reinforced concrete structures.
出处
《重庆大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2014年第9期77-83,共7页
Journal of Chongqing University
基金
国家自然科学基金资助项目(51134012)
