1. Key Laboratory of Bridge Detection & Reinforcement Technology, Research Institute of Highway, MOT, Beijing, 100088, China;
2. National Engineering Laboratory of Bridge Structure Safety Technology, Research Institute of Highway, MOT, Beijing, 100088, China;
3. Xi'an University of Architecture and Technology, Xi'an Shaanxi 710055, China
Calculation Method for Flexural Damage of RC Beams Subjected to Cyclic Loads and Corrosive Actions
FU Yu-fang1,2, ZHANG Jin-quan1,2, NIU Di-tao3
1. Key Laboratory of Bridge Detection & Reinforcement Technology, Research Institute of Highway, MOT, Beijing, 100088, China;
2. National Engineering Laboratory of Bridge Structure Safety Technology, Research Institute of Highway, MOT, Beijing, 100088, China;
3. Xi'an University of Architecture and Technology, Xi'an Shaanxi 710055, China
摘要Fatigue constitutive laws of concrete and S-N curves of steel bars have been investigated widely. This study aims to explore the failure problems of reinforced concrete (RC) beams subjected to cyclic loads and corrosive actions. The live loads obtained from Chinese technical standards and practical surveys were adopted in experiments and numerical calculations. A series of tests were conducted to study the fatigue performance of normal and corroded RC beams. A numerical method was proposed to calculate the fatigue damage of RC beams under corrosive actions and cyclic loads. The performance of RC beams with increasing fatigue cycles were analyzed with using MATLAB software in which the global stiffness degradation was introduced to represent the properties evolutions of corroded steel bars and concrete.
Abstract：Fatigue constitutive laws of concrete and S-N curves of steel bars have been investigated widely. This study aims to explore the failure problems of reinforced concrete (RC) beams subjected to cyclic loads and corrosive actions. The live loads obtained from Chinese technical standards and practical surveys were adopted in experiments and numerical calculations. A series of tests were conducted to study the fatigue performance of normal and corroded RC beams. A numerical method was proposed to calculate the fatigue damage of RC beams under corrosive actions and cyclic loads. The performance of RC beams with increasing fatigue cycles were analyzed with using MATLAB software in which the global stiffness degradation was introduced to represent the properties evolutions of corroded steel bars and concrete.
基金资助:Supported by the Ministry of Transport Applied Fundamental Research Project (No.2013319223110)
通讯作者:
FU Yu-fang
E-mail: yf.fu@rioh.cn
引用本文:
傅宇方, 张劲泉, 牛荻涛. 考虑环境作用和疲劳荷载作用下的钢筋混凝土梁抗弯强度计算方法研究[J]. Journal of Highway and Transportation Research and Development, 2019, 13(3): 44-51.
FU Yu-fang, ZHANG Jin-quan, NIU Di-tao. Calculation Method for Flexural Damage of RC Beams Subjected to Cyclic Loads and Corrosive Actions. Journal of Highway and Transportation Research and Development, 2019, 13(3): 44-51.
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2019, Vol. 13 
