华侨大学学报（自然科学版）2024，Vol.45Issue(2)：186-192,7.DOI:10.11830/ISSN.1000-5013.202312045
不均匀锈蚀钢筋截面分布特征与拉伸数值模拟
Cross-Section Distribution Feature and Tensile Numerical Simulation of Non-Uniform Corroded Steel Bars
摘要
Abstract
To study the distribution of residual cross-sectional area of corroded steel bars and the effect of non-uniform corrosion on the mechanical properties of steel bars,the corroded steel bars are obtained by elec-tric accelerated corrosion test.The residual cross-sectional area data and 3D solid model of the corroded steel bars are obtained by 3D scanning,the residual cross-sectional area is analyzed statistically,and numerical sim-ulation is carried out base on 3D scanning model.The results show that the non-uniformity of residual cross-sectional area along the longitudinal direction increases significantly with the increase of corrosion degree.For steel bars with average cross-sectional corrosion rate＜20.00％,the normal distribution model can be used to fit the probability distribution of the residual cross-sectional area,and for steel bars with average cross-section-al corrosion rate＞20.00％,Weibull distribution model can be used to fit the probability distribution of the re-sidual cross-sectional area.Nominal yield strength,nominal ultimate strength and nominal ultimate strain of steel bars decrease with the increase of average cross-sectional corrosion rate.The stress concentration occurs at areas with severe rust damage,which leads to the degradation of mechanical properties of the corroded steel bars.关键词
非均匀锈蚀/3D扫描/截面分布特征/数值模拟/力学性能Key words
non-uniform corrosion/3D scanning/cross-sectional distribution feature/numerical simulation/mechanical property分类
建筑与水利引用本文复制引用
何宝睿,刘小娟,苏龙辉,洪秀君,陈业伟..不均匀锈蚀钢筋截面分布特征与拉伸数值模拟[J].华侨大学学报（自然科学版）,2024,45(2):186-192,7.基金项目
国家自然科学基金资助项目(51808236,51978526) （51808236,51978526）
福建省自然科学基金资助项目(2021J01282) （2021J01282）
福建省住房和城乡建设行业科技研究开发项目(2022-K-157,2022-K-261) （2022-K-157,2022-K-261）
华侨大学科研启动费项目(17BS204) （17BS204）
