Impact of corrosion on low-cycle fatigue degradation of reinforcing bars with the effect of inelastic buckling

被引：72
|
作者：
Kashani, Mohammad M. [1 ]
Alagheband, Peyman [2 ]
Khan, Rafid [1 ]
Davis, Sean [3 ]
机构：
[1] Univ Bristol, Dept Civil Engn, Bristol BS8 1TR, Avon, England
[2] Univ Surrey, Univ Bristol, Dept Civil Engn, Guildford GU2 5XH, Surrey, England
[3] Univ Bristol, Sch Chem, Bristol BS8 1TR, Avon, England
来源：
INTERNATIONAL JOURNAL OF FATIGUE | 2015年 / 77卷
基金：
英国工程与自然科学研究理事会;
关键词：
Low-cycle fatigue; Corrosion; Buckling; Cyclic behaviour; Reinforcing steel; STEEL BARS; BEHAVIOR; COLUMNS; PATTERN;
D O I：
10.1016/j.ijfatigue.2015.03.013
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
The combined effect of inelastic buckling and chloride induced corrosion damage on low-cycle high amplitude fatigue life of embedded reinforcing bars in concrete is investigated experimentally. A total of forty-eight low-cycle fatigue tests on corroded reinforcing bars varied in percentage mass loss, strain amplitudes and buckling lengths are conducted. The failure modes and crack propagation are investigated by fractography of fracture surfaces using scanning electron microscope. The results show that the inelastic buckling, percentage mass loss and nonuniform corrosion pattern are the main parameters affecting the low-cycle fatigue life of reinforcing bars. It was found that the fatigue life of corroded reinforcing bars combined with inelastic buckling has a significant path dependency. The results show that in some cases the number of cycles to failure of corroded bars under constant amplitude fatigue test is increased. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：174 / 185
页数：12
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