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大量的试验研究已表明钢筋锈蚀将会导致混凝土桥梁构件中钢筋物理力学性能的退化。分析了影响钢筋强度退化的重要因素 ,并通过统计回归方法建立了锈蚀开裂时间的概率模型和锈蚀条件下钢筋强度的历时变化模型 ,为进一步研究混凝土桥梁结构服役期的抗力退化规律奠定了基础。
Numerous experimental studies have shown that steel corrosion will result in the degradation of the physical and mechanical properties of the rebar in concrete bridge members. The paper analyzes the important factors that affect the strength degradation of steel bars, establishes the probability model of corrosion cracking time and the model of steel bar strength under rust conditions by statistical regression method, which lays the foundation for further study of the resistance degradation of concrete bridge structures during their service life.