| Many projects, such as bridge,railroad sleeper and oil extraction workbench, are damaged by corrosion and fatigue, which is taken as background in this paper, the degenerative behavior of corroded reinforced concrete under cyclic loading is studied through experimental studies and theoretical analysis.A comprehensive analysis is made to work principle and influence factors of steel corrosion and work principle of the galvanization method. Based on the distinction of electrochemical corrosion and natural corrosion, this paper is tested with accelerated deterioration using a fit galvanostatic method--'damp-dry' galvanization method.This paper carries out an experimental study on bond - slip behavior of corroded reinforced concrete members under cyclic loading. From the experiment, we analyse bond - slip principle of corroded reinforced concrete, and get the deterioration influence of corrosion rate to the ultimate bond strength and the slippage of loading end and free end, moreover, fit the computation formula of the ultimate bond strength basing on the experimental data.This paper also carries out an experimental study on fatigue behavior of corroded reinforced concrete members. From the experiment, we analyse the destructional forms of members, and get the deterioration relationship of concrete strain,flexivity and the max diagonal crack along with cyclic times of loading, moreover, analyse the deterioration principle of fatigue behavior of the members with the increasing of stress ratio.Basing on the work situation of members under cyclic loading, considering the corrosion of steel and the status of loading, analyse and discuss the evaluation way of corrosion fatigue damage by fuzzy maths. |
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