A three-dimensional numerical model of a mechanically bonded lined pipe is developed, simulating its structural response during the reeling installation method. An installation/failure–repair scenario is considered with five winding–unwinding cycles, accounting for the straightening process. The cyclic deformation of a lined pipe is presented, monitoring ovalization, local curvature and liner detachment from the outer pipe during reeling. The influence of pipe contact with the reel, and the effects of back tension on the structural response of the lined pipe are examined. The results indicate a residual curvature of the pipeline at the end of unspooling. Applying different levels of back tension, the local curvature on the pipe decreases, affecting the detachment of the liner pipe from the outer pipe. Numerical results on imperfection sensitivity demonstrate the significant influence of geometric imperfections on liner buckling. Comparison of the present results with those from a pure bending model shows that a lower liner detachment rate is predicted by the present model. Furthermore, the reeling performance of thicker liners is examined, showing the gradual reduction of liner detachment with increasing wall thickness. Finally, the reeling process in the presence of moderate levels of internal pressure is simulated, verifying its beneficial effect on structural performance, preventing local buckling.

开发了机械粘合内衬管的三维数值模型，模拟其在卷取安装方法中的结构响应。考虑到矫直过程，安装/故障-维修方案具有五个卷绕-退绕循环。展示了内衬管的循环变形，在卷取过程中监测椭圆化、局部曲率和衬管与外管的脱离。检查了管道与卷轴接触的影响，以及反张力对内衬管道结构响应的影响。结果表明在解绕结束时管道的残余曲率。施加不同程度的反张力，管子上的局部曲率减小，影响衬管与外管的分离。缺陷敏感性的数值结果证明了几何缺陷对衬管屈曲的显着影响。将目前的结果与纯弯曲模型的结果进行比较表明，本模型预测的衬管脱离率较低。此外，还检查了较厚衬垫的卷取性能，表明随着壁厚的增加，衬垫脱离逐渐减少。最后，模拟了在中等内部压力下的卷曲过程，验证了其对结构性能的有益影响，防止了局部屈曲。检查了较厚衬垫的卷取性能，显示随着壁厚的增加衬垫脱离逐渐减少。最后，模拟了在中等内部压力下的卷曲过程，验证了其对结构性能的有益影响，防止了局部屈曲。检查了较厚衬垫的卷取性能，显示随着壁厚的增加衬垫脱离逐渐减少。最后，模拟了在中等内部压力下的卷曲过程，验证了其对结构性能的有益影响，防止了局部屈曲。