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External loading-induced deformations of deteriorated pipelines rehabilitated with internal replacement technologies
Tunnelling and Underground Space Technology ( IF 6.7 ) Pub Date : 2024-12-12 , DOI: 10.1016/j.tust.2024.106272
Jacob Klingaman, Brad P. Wham, Patrick G. Dixon, Shideh Dashti

A method is presented for estimating deformations due to external lateral loading for full-scale laboratory performance testing of host-internal replacement pipe (IRP) systems. Soil displacements associated with traffic loading and adjacent excavation are described analytically based on prior research. A beam-on-springs finite element (FE) model is developed to represent buried, jointed cast iron (CI) pipelines that have deteriorated and been retrofitted with IRPs. The FE model explicitly accounts for structural contributions of the IRP to the barrel, joints, and discontinuities of the host pipe. The model is verified with past analytical, FE, and experimental results. Using the verified model, a series of charts and relationships are provided to inform full-scale performance testing of IRP materials for a wide range of diameters, thicknesses, and linear-elastic material properties.

中文翻译:


使用内部置换技术修复劣化管道的外部载荷引起的变形



提出了一种估计外部横向载荷引起的变形的方法,用于主机内部更换管道 (IRP) 系统的全面实验室性能测试。根据先前的研究,对与交通负荷和相邻挖掘相关的土壤位移进行了分析描述。开发了弹簧梁有限元 (FE) 模型来表示埋地、铰接的铸铁 (CI) 管道,这些管道已经恶化并进行了 IRP 改造。FE 模型明确考虑了 IRP 对筒体、接头和主管道不连续性的结构贡献。该模型已通过过去的分析、有限元和实验结果进行了验证。使用经过验证的模型,提供了一系列图表和关系,为各种直径、厚度和线弹性材料特性的 IRP 材料的全面性能测试提供信息。
更新日期:2024-12-12
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