| The offshore reinforced concrete is often damaged because of lacking of durability, which is taken as background in this paper, the degenerative behavior of reinforced concrete under marine environment is studied through experimental studies and theoretical analysis.Firstly, a comprehensive assessment is made to the currently used experimental methods. According to characteristics of the offshore reinforced concrete which is studied in this paper, an accelerated experiment is carried out by using a dipping-drying circulation method in laboratory condition which conforms to practical situation. The theory of reinforced concrete corrosion in marine environment is found out, moreover, the deterioration of the material and structural properties of corrosion reinforced concrete members is analyzed.Secondly, this paper carries out experimental studies on uniaxial compression behavior and bond -slip behavior of seawater attacked concrete. The ultrasonic detection is used to check out the damaged concrete thickness of different attacked concrete. Then, the damaged concrete thickness is used as the parameter of evaluating deterioration degree. Moreover, compression constitutive relationship and bond-slip constitutive relationship are obtained.At last, the attacked structural members are sorted out slight attacked, moderate attacked and serious attacked members by the deterioration degree of bond performance between concrete and steel bars. Based on the experimental results, formulas for bearing capacity calculation of reinforced concrete attacked by seawater are derived.
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