建筑钢结构进展2025，Vol.27Issue(11)：101-109,9.DOI:10.13969/j.jzgjgjz.20240622001
考虑随机腐蚀的钢柱受压承载性能研究
Study on Compressive Bearing Capacity of Steel Columns Considering Random Corrosion
郭俊辉 1陈安康 1吴祖咸 2万君 1郑泽臻 3张惊宙 3王彦博4
作者信息
- 1. 台州宏远电力设计院有限公司,浙江 台州 318001
- 2. 浙江华云电力工程设计咨询有限公司,杭州 310014
- 3. 广州大学 土木与交通工程学院,广州 510006
- 4. 同济大学 土木工程学院,上海 200092
- 折叠
摘要
Abstract
In view of the problem that steel columns will suffer different degrees of corrosion during service,resulting in changes in bearing capacity,this paper takes steel columns subjected to random pitting corrosion as the research object,and adopts Monte Carlo method and finite element analysis to study the influence of random pitting corrosion on the axial bearing capacity of steel columns.Monte Carlo method was used to solve the random distribution problem of pitting corrosion,and a numerical model of Monte Carlo random pitting corrosion was established,and its reliability was verified by the existing literature on steel column compression tests.In order to comprehensively evaluate the influence of pitting corrosion,a total of 1 080 random pitting models were established to perform nonlinear buckling analysis on the bearing capacity of columns.The influences of four factors,namely boundary conditions,slenderness ratio,pit depth and corrosion rate,on the bearing capacity of steel columns were studied.The results show that the slenderness ratio,pit depth and boundary conditions all affect the bearing capacity of the steel column under compression at the same corrosion degree.There is a negative correlation between the degradation law of bearing capacity and the corrosion rate of steel columns under compression.关键词
H型钢柱/随机点蚀/蒙特卡洛法/折减系数/参数分析/非线性屈曲分析/腐蚀率Key words
H-shaped steel column/random pitting corrosion/Monte Carlo method/reduction factor/numerical analysis/nonlinear buckling analysis/corrosion rate分类
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郭俊辉,陈安康,吴祖咸,万君,郑泽臻,张惊宙,王彦博..考虑随机腐蚀的钢柱受压承载性能研究[J].建筑钢结构进展,2025,27(11):101-109,9.
