The paper examines the behaviour of buried continuous pipelines crossing strike-slip faults using experimental and numerical modelling. A newly developed experiment setup is presented along with the derivation of relevant scaling laws and non-dimensional terms governing global response of continuous pipelines to strike-slip faulting. Four model tests are carried out to understand the performance of the pipelines and the results are presented through the derived non-dimensional framework. Three-dimensional (3D) Finite Element (FE) model is also undertaken to simulate buried continuous pipelines crossing strike-slip faults and is calibrated against the model test results and a field case record for validation and verification. A parametric study is also carried out to better understand the parameters influencing the response of buried continuous pipelines to strike-slip faults and to also investigate the effects of pipe end conditions on their behaviour. API 5 L X70 steel pipe with 490 MPa of yield strength was used in the numerical parametric study. Two different scenarios based on fault crossing angle of the pipe (β) were considered in the parametric study: (a) pipelines in tension and bending; (b) pipelines in compression and bending. The experimental and numerical results show that the longitudinal pipe strains under strike-slip faulting are strongly dependent on six parameters: (a) normalized fault displacements (represented by δ/D where δ is the fault displacement and D is the pipe diameter which is also an indication of soil strain in the mobilised zone); (b) ratio of pipe diameter to wall thickness (D/t); (c) fault crossing angle of the pipe (β); (d) relative soil-pipe stiffness (kD⁴/EI); (e) ratio of burial depth to pipe diameter (H/D) and (f) pipe end conditions. Finally, practical implications of the study are discussed.

本文通过实验和数值模拟研究了穿越走滑断层的地下连续管道的行为。提出了一种新开发的实验装置，并推导了相关的比例定律和控制连续管道对走滑断层的整体响应的无量纲项。进行了四个模型测试以了解管道的性能，并通过派生的无量纲框架显示结果。还采用了三维（3D）有限元（FE）模型来模拟穿越走滑断层的地下连续管道，并针对模型测试结果和现场案例记录进行了校准，以进行验证和验证。还进行了参数研究，以更好地了解影响地下连续管线对走滑断层的响应的参数，并研究管道末端条件对其行为的影响。数值参量研究使用屈服强度为490 MPa的API 5 L X70钢管。在参数研究中，考虑了基于管道故障交角（β）的两种不同情况：（a）处于拉伸和弯曲状态的管道；（b）管道处于压缩和弯曲状态。实验和数值结果表明，走滑断层下的纵向管道应变主要取决于六个参数：（a）归一化断层位移（用δ/ D表示，其中δ是断层位移，D是管径，它也是动员区土壤应变的迹象）; （b）管径与壁厚之比（D / t）；（c）管道的断层交叉角（β）；（d）相对土管刚度（kD⁴ / EI）；（e）埋深与管道直径的比率（H / D）和（f）管道末端条件。最后，讨论了该研究的实际意义。