Steel bars have been widely used in building structure and industrial equipment. For steel bars adopted in such structures, corrosion is inevitable, of which the pitting corrosion is one of the most common types. The tension capacity of steel bars is an important property utilized by steel structures; however, this property can be considerably deteriorated by corrosion. Hence, the tension capacity of corroded steel bars is investigated to determine the influence of corrosion. Stochastic numerical analysis is adopted, and the randomness of corrosion location is accurately considered. The relationship between tension capacity and mass loss ratio is the key research content. The influences of pit shape, corrosion thickness T_c, and constitutive model of steel on residual tension capacity are studied. An analytical method for predicting the value of R_mean is proposed.

钢筋已广泛用于建筑结构和工业设备。对于此类结构中采用的钢筋，腐蚀是不可避免的，其中点蚀是最常见的类型之一。钢筋的抗拉能力是钢结构利用的一个重要性能；然而，这种特性会因腐蚀而显着恶化。因此，研究腐蚀钢筋的抗拉能力以确定腐蚀的影响。采用随机数值分析，准确考虑腐蚀位置的随机性。抗拉能力与质量损失比的关系是重点研究内容。凹坑形状、腐蚀厚度T _{c 的影响}, 并研究了钢材对残余张力承载力的本构模型。提出了一种预测R_均值的解析方法。