Analysis on Fatigue of Natural Corrosion Steel Bars

被引：1
|
作者：
Li, Shibin [1 ,2 ]
Zhang, Weiping [2 ]
Gu, Xianglin [2 ]
Zhu, Cimian [2 ]
机构：
[1] Shandong Jianzhu Univ, Sch Civil Engn, Jinan 250101, Peoples R China
[2] Tongji Univ, Dept Bldg Engn, Shanghai 200092, Peoples R China
来源：
ADVANCES IN STRUCTURES, PTS 1-5 | 2011年 / 163-167卷
基金：
中国国家自然科学基金;
关键词：
Natural Corrosion; Steel Bar; Test; Fatigue Life; Analysis; REINFORCEMENT;
D O I：
10.4028/www.scientific.net/AMR.163-167.3237
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
To reasonablely assess the residual fatigue life of aged existing reinforced concrete(RC) bridges, axial tensile fatigue tests were conducted on fifteen naturally carbonation-induced corrosion steel bars. The fatigue test results indicate that the existence of corrosion pits reduces the fatigue life of steel bars significantly under the same fagitue stress; with the development of corrosion, the fatigue life of steel bars decays according to negative power exponent law approximately and the attenuation rate increases with stress level augment. The fatigue deterioration law of natural corrosion steel bars is similar to that of accelerated corrosion steel bars, but the attenuation rate is different from that of accelerated corrosion steel bars, and also the influence of stress level on the attenuation rate is just cross to that of accelerated corrosion steel bars. For the complexity of fatigue and corrosion, further Pertinent conclusions remain to be confirmed.
引用
收藏
页码：3237 / 3241
页数：5
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