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首页> 外文期刊>Journal of Reinforced Plastics and Composites >Numerical study of annular flaws/defects affecting the integrity of grouted composite sleeve repairs on pipelines
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Numerical study of annular flaws/defects affecting the integrity of grouted composite sleeve repairs on pipelines

机译：影响管道注浆复合套管修复完整性的环形缺陷/缺陷的数值研究

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摘要

Grouted sleeves are one of the accepted techniques used for the repair of corroded pipelines. The sleeves are attached over the region of pipe that requires repair, creating an annulus that is then filled with grout material. In this study, the repair system consists of a composite sleeve with polymeric grout. A finite element (FE) study is carried out to predict the effects of selected properties of the composite sleeve and grout on the pipe integrity, subjected to internal fluid pressure. The primary purpose is to identify the main effects and interactions between different material properties, which are useful to aid design decisions for such repairs. While structural reinforcement is provided by the sleeve, the grout plays an important role in transferring hoop pressure in the pipe to the sleeve. Since experimental observations indicate the development of cracks in the grout solely under curing conditions, it is imperative to investigate the effects of such defects. Several different repair conditions that have potential to critically influence the integrity of a repaired pipe are investigated.
机译：灌浆套管是用于修复腐蚀管道的公认技术之一。套筒固定在需要维修的管道区域上，形成一个环形空间，然后用灌浆材料填充。在这项研究中，修复系统由一个带有聚合物灌浆的复合套筒组成。进行了有限元（FE）研究，以预测在受到内部流体压力的情况下，复合套管和灌浆的选定属性对管道完整性的影响。主要目的是确定不同材料特性之间的主要影响和相互作用，这有助于辅助此类维修的设计决策。尽管套管提供了结构加固，但灌浆在将管道中的环向套管压力传递至套管中起着重要作用。由于实验观察表明仅在固化条件下水泥浆会出现裂纹，因此必须研究此类缺陷的影响。研究了几种可能严重影响被修复管道完整性的不同修复条件。

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