根据1 6个型钢混凝土推出试件的试验结果,对推出试件的荷载-滑移曲线进行了分析,得到了初始滑移粘结强度、极限粘结强度和水平残余粘结强度这三个特征强度的试验统计结果,并据此分析了混凝土强度、型钢的混凝土保护层厚度、横向配箍率和型钢埋置长度4个因素与特征粘结强度之间的关系,提出了临界保护层厚度的概念,通过统计回归建立了考虑多因素的型钢混凝土粘结强度计算公式 According to the test results of 16 steel reinforced concrete specimens released, the load-slip curves of the introduced specimens were analyzed and the three characteristics of initial slip bond strength, ultimate bond strength and horizontal residual bond strength were obtained Based on the analysis of the concrete strength, the concrete cover thickness, the transverse stirrup ratio and the embedding length of the steel, the relationship between the four factors and the characteristic bond strength is analyzed, and the thickness of the critical protective layer Concept, through statistical regression established multi-factor steel reinforced concrete bond strength calculation formula