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首页> 外文期刊>Canadian Journal of Civil Engineering >Interaction of multiple corrosion defects on burst pressure of pipelines
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Interaction of multiple corrosion defects on burst pressure of pipelines

机译：多种腐蚀缺陷对管道爆发压力的相互作用

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The strength of pipeline with multiple corrosion patches depends on the number of corrosion patches within an area on the pipe surface, the locations of corrosion patches along the longitudinal and circumferential directions of the pipe. In this paper, the strength and deformation characteristics of corroded pipeline are investigated using finite element analysis. Pipes with different diameters and different depths of corrosion patches are considered. The spacing of the corrosion patches is varied along longitudinal, diagonal, and circumferential directions of the pipes. The study shows that the limiting spacing for interaction of corrosion patches depends predominantly on pipe wall thickness, corrosion depth, and the location of the defects. The diameter of the pipe has some influence on the interaction for large diameter pipes. A new interaction rule for the limiting spacing for interaction is developed for longitudinally spaced corrosion patches. For circumferentially spaced corrosion patches, the ASME recommendation for the limiting spacing is found to be reasonable.
机译：具有多种腐蚀贴片的管道强度取决于管表面上的区域内的腐蚀块的数量，沿管的纵向和圆周方向的腐蚀块的位置。本文采用有限元分析研究了腐蚀管道的强度和变形特性。考虑了不同直径和不同深度的腐蚀贴片的管道。腐蚀贴片的间距沿管道的纵向，对角线和圆周方向变化。该研究表明，用于腐蚀贴片的相互作用的限制间隔主要取决于管壁厚度，腐蚀深度和缺陷的位置。管道的直径对大直径管道的相互作用产生了一些影响。为纵向间隔的腐蚀贴片开发了用于相互作用的限制间隔的新交互规则。对于周向间隔的腐蚀贴片，发现限制间距的ASME推荐是合理的。

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