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本文着意建立一套钢筋混凝土结构耐久性的评定方法，这一方法提供了一套客观、公正地分析和处理现场检测数据的手段并有助于评定者选择合适的评定指标，从而可以得到结构的性能状况及剩余寿命。这一方法将结构的耐久性分为恶化程度和恶化速度两项评定；利用Ｓａａｔｙ１－９比率标度法将专家根据主观经验所得的判断信息进行客观、科学地量化；采用熵的性质，使多指标评定体系的固有信息与专家经验判断量化的主观信息相结合，解决了各指标权重确定的主观不合理性；并以灰色关联度为准则对结构进行多层次评定，得到结构的恶化程度和恶化速度；最后采用结构恶化程度随时间变化的指数关系得到结构的剩余寿命。
This paper intends to establish a set of methods for assessing the durability of reinforced concrete structures. This method provides a set of objective and fair methods for analyzing and processing on-site inspection data and helps the rater to select appropriate evaluation indicators so as to obtain structural Performance status and remaining life. This method divides the durability of the structure into two grades: deterioration level and deterioration rate. The Saaty 1-9 ratio scale method is used to quantify objectively and scientifically the judgment information obtained by experts based on subjective experience; the nature of entropy is used to make The intrinsic information of the indicator evaluation system is combined with subjective information quantified by expert experience to solve the subjective irrationality of determining the weight of each indicator; and the gray correlation degree is used as a criterion to evaluate the structure in multiple levels to obtain the deterioration degree and deterioration of the structure. Velocity; Finally, the residual life of the structure is obtained by using the exponential relation of the degree of deterioration of the structure over time.