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Control-volume-based finite element modelling of liquefaction around a pipeline

机译:基于控制量的管道液化的有限元建模

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Pipelines are generally used to transmit energy sources from production sources to target places. Buried pipelines in saturated deposits during seismic loading could damage from resulting liquefaction due to accumulative excess pore-water pressure generation. In this paper, the evaluation of liquefaction potential in the vicinity of an offshore buried pipeline is studied using the control-volume-based finite element method. The objective of the present work is to study the effect of different governing parameters such as the specific weight of pipeline, Poisson's ratio, permeability of the soil, deformation module, pipeline diameter and pipeline burial depth on the soil liquefaction around a marine pipeline. The results of analysis indicated that with the increase of deformation module, Poisson's ratio and permeability of the soil coefficient, the liquefaction potential reduces. The liquefaction potential around the gas pipeline is much more than oil pipeline.
机译:管道通常用于将能源从生产来源传输到目标位置。在地震荷载作用下,饱和沉积物中的地下管道可能由于累积的过量孔隙水压力产生而导致液化而损坏。本文采用基于控制量的有限元方法研究了海上埋地管道附近的液化潜力。本工作的目的是研究不同的控制参数,例如管道的比重,泊松比,土壤渗透率,变形模量,管道直径和管道埋藏深度对海洋管道周围土壤液化的影响。分析结果表明,随着变形模量,泊松比和土壤渗透率的增加,液化势减小。天然气管道周围的液化潜力远大于石油管道。

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