Deformation Performance of Longitudinal Non-Uniformly Corroded Reinforced Concrete Columns.

IF 3.1 3区材料科学 Q3 CHEMISTRY, PHYSICAL Materials Pub Date : 2024-10-31 DOI:10.3390/ma17215303

Guoyao Sun, Huanjun Jiang

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Abstract

Due to the complexity of the marine corrosive environment, the rebar corrosion in reinforced concrete (RC) bridge piers is usually longitudinal non-uniform. However, the study on the mechanical behavior of longitudinal non-uniformly corroded RC structural members is very limited. To systematically study the deformation performance of the longitudinal non-uniformly corroded RC columns, the finite element models of 106 RC columns with different parameters were established using the commercial software ABAQUS 2016. The effects of the height of the bottom section (represented in the text by the variable "position"), the length, and the rebar corrosion ratio of the corroded segment on the deformation performance of the longitudinal non-uniformly corroded RC columns were analyzed. It is found that the change in the position of the corroded segment on the column may change the most unfavorable section of the column and the failure mode. The length of the corroded segment significantly affects the yield deformation. The ultimate plastic deformation increases with the increase of position or length of the corroded segment. With the increase of rebar corrosion ratio of the corroded segment, the ultimate plastic deformation decreases.

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纵向非均匀腐蚀钢筋混凝土柱的变形性能。

由于海洋腐蚀环境的复杂性，钢筋混凝土（RC）桥墩的钢筋腐蚀通常是纵向非均匀腐蚀。然而，对纵向非均匀腐蚀 RC 结构构件力学行为的研究非常有限。为了系统研究纵向非均匀腐蚀 RC 柱的变形性能，使用商业软件 ABAQUS 2016 建立了 106 个不同参数 RC 柱的有限元模型。分析了底部截面高度（文中用变量 "位置 "表示）、长度和腐蚀段钢筋腐蚀率对纵向非均匀腐蚀 RC 柱变形性能的影响。结果发现，腐蚀段在柱上位置的改变可能会改变柱的最不利截面和破坏模式。腐蚀段的长度对屈服变形有显著影响。极限塑性变形随腐蚀段位置或长度的增加而增大。随着锈蚀段钢筋锈蚀率的增加，极限塑性变形减小。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Materials MATERIALS SCIENCE, MULTIDISCIPLINARY-

CiteScore

5.80

自引率

14.70%

发文量

7753

审稿时长

1.2 months

期刊介绍： Materials (ISSN 1996-1944) is an open access journal of related scientific research and technology development. It publishes reviews, regular research papers (articles) and short communications. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. Therefore, there is no restriction on the length of the papers. The full experimental details must be provided so that the results can be reproduced. Materials provides a forum for publishing papers which advance the in-depth understanding of the relationship between the structure, the properties or the functions of all kinds of materials. Chemical syntheses, chemical structures and mechanical, chemical, electronic, magnetic and optical properties and various applications will be considered.