In order to better understand the interfacial debonding behavior of pipe joints during the whole loading process, an analytical solution for the full-range behavior of adhesively bonded pipe joints under combined thermal and mechanical tensile loadings is presented in this paper. The solution was developed based on a simplified rigid-softening bond–slip model, and two cases with different softening region development were discussed. The analytical results were presented in a finite element model, and the effect of temperature on load–displacement curves and ultimate loads was shown based on the model. Through the nonlinear fracture mechanics, the analytical expressions of the interfacial shear stress and the load–displacement relationship can be obtained. The stress transfer mechanism, the interface crack propagation and the ductility behavior of the joints can be explained. This analytical result can help improve the potential application of fabricated structural components, precision instruments, oil and gas pipelines.

为了更好地了解管接头在整个加载过程中的界面剥离行为，本文提出了一种热力和机械拉伸联合载荷下胶接管接头全范围行为的解析解。该解决方案是基于简化的刚-软化粘结-滑移模型开发的，并讨论了两种不同软化区域发展的情况。分析结果以有限元模型呈现，并基于该模型显示温度对载荷-位移曲线和极限载荷的影响。通过非线性断裂力学，可以得到界面剪应力和载荷-位移关系的解析表达式。应力传递机制，可以解释界面裂纹扩展和接头的延性行为。这一分析结果有助于提高装配式结构部件、精密仪器、油气管道的潜在应用。