摘 要：对高温后钢筋和混凝土之间黏结强度的既有试验数据进行统计分析，给出了不同温度作用后带肋钢筋与混凝土之间相对残余黏结强度的均值和均方差。 分析结果表明，其数据符合正态分布，在此基础上建立了高温作用后钢筋与混凝土相对黏结残余强度均值和具有95%保证率的分位值随温度变化的表达式。统计了光圆钢筋与混凝土之间残余黏结强度随所经历最高温度的表达式，给出了高温后钢筋与混凝土局部黏结滑移本构关系模型。
Abstract：The existing test data on the residual bonding strength between fire-damaged concrete and rebar were collected and analyzed. The mean values and variances of the residual bonding strength between ribbed bars and concrete subjected to different temperature are presented. The analysis shows that the data conforms to normal distribution, thus two formulas are established for relationship between the elevated temperature and the mean value as well as the value with a guarantee rate of 95%. The relationship of temperature and the residual bonding strength between round bar and concrete is also presented. At last the local bond-slip constitutive relationship model is put forward.