上海交通大学学报（英文版） ›› 2012, Vol. 17 ›› Issue (4): 391-400.doi: 10.1007/s12204-012-1297-6

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Effects of Length and Location of Steel Corrosion on the Behavior and Load Capacity of Reinforced Concrete Columns

WANG Xiao-hui1 (王小惠), LIU Xi-la1 (刘西拉), Deng Bao-ru2 (邓宝如)   

  1. (1. Department of Civil Engineering, Shanghai Jiaotong University, Shanghai 200240, China; 2. SACA Energy-Saving Engineering Co., Ltd., Beijing 102600, China)
  • 出版日期:2012-08-30 发布日期:2012-11-16
  • 通讯作者: WANG Xiao-hui1 (王小惠) E-mail: w_xiaoh@sjtu.edu.cn

Effects of Length and Location of Steel Corrosion on the Behavior and Load Capacity of Reinforced Concrete Columns

WANG Xiao-hui1 (王小惠), LIU Xi-la1 (刘西拉), Deng Bao-ru2 (邓宝如)   

  1. (1. Department of Civil Engineering, Shanghai Jiaotong University, Shanghai 200240, China; 2. SACA Energy-Saving Engineering Co., Ltd., Beijing 102600, China)
  • Online:2012-08-30 Published:2012-11-16
  • Contact: WANG Xiao-hui1 (王小惠) E-mail: w_xiaoh@sjtu.edu.cn

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摘要： The effects of length and location of the steel corrosion on the structural behavior and load capacity of reinforced concrete (RC) columns have been investigated. Results of the accelerated corrosion process and eccentric load test are presented in detail. Effects of the location of the partial length, the corrosion level within partial length and the asymmetrical deterioration of the concrete section on the mechanical behavior and load capacity of corroded RC columns are discussed. It is found that the mechanical behavior and load carrying capacity of corroded RC columns are simultaneously affected by the above mentioned factors. For the corroded RC columns with large eccentricity, a higher corrosion level in the tensile corroded length and a greater asymmetrical deterioration of the concrete section can result in less ductile behavior and larger load reduction of the column; while for the corroded RC columns with small eccentricity, the less ductile behavior and the larger load reduction of the column may result from the higher corrosion level in the compressive corroded length and the greater asymmetrical deterioration of the concrete section.

关键词: reinforced concrete (RC) column, corrosion, partial length, mechanical behavior, load capacity

Abstract: The effects of length and location of the steel corrosion on the structural behavior and load capacity of reinforced concrete (RC) columns have been investigated. Results of the accelerated corrosion process and eccentric load test are presented in detail. Effects of the location of the partial length, the corrosion level within partial length and the asymmetrical deterioration of the concrete section on the mechanical behavior and load capacity of corroded RC columns are discussed. It is found that the mechanical behavior and load carrying capacity of corroded RC columns are simultaneously affected by the above mentioned factors. For the corroded RC columns with large eccentricity, a higher corrosion level in the tensile corroded length and a greater asymmetrical deterioration of the concrete section can result in less ductile behavior and larger load reduction of the column; while for the corroded RC columns with small eccentricity, the less ductile behavior and the larger load reduction of the column may result from the higher corrosion level in the compressive corroded length and the greater asymmetrical deterioration of the concrete section.

Key words: reinforced concrete (RC) column, corrosion, partial length, mechanical behavior, load capacity

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