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盐害腐蚀导致混凝土和钢筋强度衰减,耐久性能劣化。提出用随机过程表达的混凝土与钢筋的抗力衰减模型,推导了基于抗力和荷载为随机过程的井壁时变可靠度功能函数,以此为基础推导出矿井井壁体系可靠度计算可以转化为确定井壁最弱单元可靠度。
Salt corrosion causes concrete and rebar strength decay, durability deterioration. The resistance attenuation model of concrete and steel reinforced with stochastic process is proposed. The function of time-varying reliability of shaft lining based on resistance and load is deduced. Based on this, the calculation of reliability of shaft lining can be transformed into the determination The weakest cell wall reliability.