Calibration of Verley and Sotberg soil resistance model for pipelines placed on calcareous soils
Calibration of Verley and Sotberg soil resistance model for pipelines placed on calcareous soils
复制标题
钙质土壤上管道的 Verley 和 Sotberg 土壤阻力模型的校准
DOI：
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复制
发表时间：
2014
期刊：
影响因子：
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通讯作者：
M. Cassidy
中科院分区：
文献类型：
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作者：
Bassem S. Youssef;M. Cassidy
海底管道的底部稳定性是近年来大量研究的焦点，特别强调管土相互作用的主题。已经开发了许多模型来预测在垂直和水平荷载组合情况下的管-土相互作用行为。Verley和Sotberg基于能量的硅砂土壤阻力模型就是其中之一。该模型由挪威船级社（DNV）推荐，并被海底管道设计行业广泛接受和使用，以模拟石英砂土壤上的管-土相互作用。世界上许多近海油气开发区（包括西澳大利亚近海）都发现了钙质砂土。钙质砂的工程特性不同于典型的硅砂土。因此，硅砂土的Verley和Sotberg参数不适用于石灰性砂土。本文提出了一种校准的Verley和Sotberg硅砂土壤阻力模型的石灰性砂土的条件下使用的一组离心试验的结果的管模型的石灰性砂土。
On-bottom stability of subsea pipelines has been the focus of substantial research in recent years with particular emphasis on the topic of pipe-soil interaction. Numerous models have been developed to predict the pipe-soil interaction behavior under combined vertical and horizontal loading scenarios. The Verley and Sotberg energy based soil resistance model for silica sand is among these models. The model is recommended by Det Norske Veritas (DNV) and widely accepted and used by subsea pipeline design industry to model the pipe-soil interaction on silica sand soils. Calcareous sand soils are found in many of the world’s offshore hydrocarbon development regions including offshore of Western Australia. The engineering characteristics of the calcareous sand are different from those of the typical silica sand soils. As such, Verley and Sotberg parameters for silica sand soils are not suitable for calcareous sand soils. This paper presents a calibration of the Verley and Sotberg silica sand soil resistance model for calcareous sand soil conditions using the results of a set of centrifuge tests of a pipe model on calcareous sand soil.