Research on restoring force Model of corroded reinforced concrete members based on seismic damage
To study the restoring force Model of corroded reinforced concrete members based on seismic damage, this paper studied on the cyclic loading on six corroded flexural members, and the hysteresis loop and skeleton curve of various degrees of corroded reinforced concrete specimens were obtained and the effects of reinforcement corrosion on specimen anti-seismic property were analyzed. Based on test result, combining with morphological changes of the structures due to steel corrosion，all kinds of durability damages of structure, such as: geometrical damage of concrete cross-section, mechanical performance degradation of concrete and reinforcement, bond-slip performance degradation, stiffness degradation and so on, and amendment caused by stirrup corrosion, the method to determine restoring force model of corroded reinforced concrete members under flexural and compressive stress is proposed. After comparing with experimental data, calculated skeleton curves and hysteretic curves of this model agree well with trial values and the phenomenon described by the model is in agreement with the experiment results, which can be used in the seismic response analysis of damage reinforced concrete structures.
College of Civil Engineering, Central South University, Changsha, China, 410000
Abstract：To study the restoring force Model of corroded reinforced concrete members based on seismic damage, this paper studied on the cyclic loading on six corroded flexural members, and the hysteresis loop and skeleton curve of various degrees of corroded reinforced concrete specimens were obtained and the effects of reinforcement corrosion on specimen anti-seismic property were analyzed. Based on test result, combining with morphological changes of the structures due to steel corrosion，all kinds of durability damages of structure, such as: geometrical damage of concrete cross-section, mechanical performance degradation of concrete and reinforcement, bond-slip performance degradation, stiffness degradation and so on, and amendment caused by stirrup corrosion, the method to determine restoring force model of corroded reinforced concrete members under flexural and compressive stress is proposed. After comparing with experimental data, calculated skeleton curves and hysteretic curves of this model agree well with trial values and the phenomenon described by the model is in agreement with the experiment results, which can be used in the seismic response analysis of damage reinforced concrete structures.
梁 岩1,2 罗小勇2, 陈代海1. 锈蚀钢筋混凝土构件基于地震损伤的恢复力模型研究[J]. 振动与冲击, 2015, 34(5): 199-206.
Liang Yan1,2 Luo Xiaoyong2，CHEN Dai hai 1. Research on restoring force Model of corroded reinforced concrete members based on seismic damage. JOURNAL OF VIBRATION AND SHOCK, 2015, 34(5): 199-206.
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