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Effect of Sedimentation Depth and Water Depth on the Integrity of River Crossing Pipeline  

Baek, Jong-Hyun (R&D Division, Korea Gas Corporation)
Kim, Young-Pyo (R&D Division, Korea Gas Corporation)
Kim, Woo-Sik (R&D Division, Korea Gas Corporation)
Publication Information
Journal of the Korean Institute of Gas / v.14, no.6, 2010 , pp. 1-6 More about this Journal
Abstract
River crossing pipelines have been being operated with buried depth of 1.2~4m underneath river bottom to prevent buoyance and external impact. River crossing pipelines have to show resistance to soil load and hydrostatic pressure. In this study, structural integrity of the river crossing pipeline subjected to soil load and hydrostatic pressure was evaluated by using FE analyses. Hoop stress increased with increasing buried depth under identical water height in case of without concrete encasement, however, hoop stress decreased with increasing water height under identical buried depth.
Keywords
API 5L X65; FE-analyses; river crossing pipelines; soil depth; water depth;
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