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Field experiments and FEM analysis of third-party damaged oil transmission pipeline

机译：第三方受损输油管道的现场试验和有限元分析

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摘要

Oil transmission pipelines are often drilled by oil stealers in China. These drilled pipelines must be repaired or replaced. The replace of a segment of a pipeline is costly and time-consuming. At the same time, it is necessary to stop transmission when replacing the pipeline. It is almost impossible because such damages are too frequent. In order to save time and cost, to repair the pipeline by welding is widely used. But the strength of the pipeline was badly hurt because of these third-party damages by stealers. Whether the pipeline can work normally after being damaged is in concern. This paper details a series of experiments on such pipelines. The strains of some selected positions were measured and the deduced stress results were analyzed. Further FEM analysis was performed and results were compared to the experimental ones. The extent of the strength degradation by such damages were thus concluded.
机译：在中国，输油管道经常被偷油者钻探。这些钻出的管道必须维修或更换。更换管道的一部分既昂贵又费时。同时，更换管线时必须停止传输。这几乎是不可能的，因为这种损害太频繁了。为了节省时间和成本，通过焊接修复管道被广泛使用。但是由于盗窃者对第三方的损害，管道的强度受到了严重损害。管道受损后能否正常工作是值得关注的问题。本文详细介绍了有关此类管道的一系列实验。测量了某些选定位置的应变，并分析了推导的应力结果。进行了进一步的有限元分析，并将结果与​​实验结果进行了比较。由此推断出由于这种破坏而导致的强度降低的程度。

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