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Analytical and experimental studies of dragging hall anchors through rock berm

机译：锚索穿过岩壁的分析和实验研究

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摘要

An analytical method is proposed in this paper to calculate the maximum embedded depth of a dragged Hall anchor when passing through rock berm and to thus define a minimum buried depth of pipelines in rock berm to prevent pipelines from being damaged by dragging anchors. The movement of a Hall anchor in rock berm is interpreted based on the equilibrium conditions for resisting and driving moments acting on the anchor. To verify the accuracy of the proposed analytical method, model tests were carried out by using three scaled Hall anchor models and dragging them through rock berm. The comparisons between the two studies show that the average value of their differences for the stable embedded depth of a Hall anchor in sand and in rock berm are only 1.7% and 2.7%, respectively. The good agreements indicate that the proposed method is accurate enough to calculate the minimum buried depth of pipeline in rock berm during pipeline design. (C) 2015 Elsevier Ltd. All rights reserved.
机译：本文提出了一种解析方法，用于计算被拖曳的霍尔锚栓穿过岩边时的最大埋入深度，从而确定岩堤中管道的最小埋入深度，以防止被锚栓拖曳损坏管道。霍尔锚在岩石护堤中的运动是根据抵抗和驱动作用在锚上的力矩的平衡条件来解释的。为了验证所提出的分析方法的准确性，使用三个比例的霍尔锚模型并将其拖过岩石护堤进行了模型测试。两项研究之间的比较表明，它们对霍尔锚在沙子和岩石护堤中的稳定埋入深度之差的平均值分别仅为1.7％和2.7％。良好的协议表明，所提出的方法足够准确，可以在管道设计过程中计算出岩壁中管道的最小埋深。 （C）2015 Elsevier Ltd.保留所有权利。

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  • 来源
    《Ocean Engineering》 |2015年第1期|529-538|共10页
  • 作者

    Yan Shuwang; Guo Bingchuan; Sun Liqiang; Guo Wei; Lei Zhenming;

  • 作者单位

    Tianjin Univ, State Key Lab Hydraul Simulat & Safety, Tianjin 300072, Peoples R China;

    Tianjin Univ, State Key Lab Hydraul Simulat & Safety, Tianjin 300072, Peoples R China;

    Tianjin Univ, State Key Lab Hydraul Simulat & Safety, Tianjin 300072, Peoples R China;

    Nanyang Technol Univ, Sch Civil & Environm Engn, Singapore 639798, Singapore;

    Offshore Oil Engn Co Ltd, Tianjin 300450, Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Pipeline; Anchor; Anchor dragging; Rock berm;

    机译：管道;锚;锚拖动;岩护;

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