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A full-range nonlinear analysis method for fatigue damage in prestressed concrete beams is presented. New damage accumulation models are proposed to describe the fatigue damage evolution in concrete and reinforcement respectively. Based on the stress analysis for cross section, the stress redistribution in the fatigue damage process, due to the different damage mechanisms of concrete and reinforcement, is considered. The nonlinear damage analysis is achieved by means of piecewise linearity, and it is applicable on the condition of repeated loadings with variable amplitude. Fatigue damage modeling of a beam is implemented to illustrate that the proposed method can preferably fit the experimental results.
A full-range nonlinear analysis method for fatigue damage in prestressed concrete beams is presented. New damage accumulation models are presented to describe the fatigue damage evolution in concrete and reinforcement respectively. Based on the stress analysis for cross section, the stress redistribution in the fatigue damage process, due to the different damage mechanisms of concrete and reinforcement, is considered as the different damage mechanisms of concrete and reinforcement, is considered. implemented to illustrate that the proposed method can preferably fit the experimental results.