...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Ocean Engineering >Investigation of impact forces on pipeline by submarine landslide using material point method
【24h】

Investigation of impact forces on pipeline by submarine landslide using material point method

机译：用材料点法研究海底滑坡对管道的冲击力

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Quantitative assessment of impact forces by submarine landslide is significant for the safe operation of pipelines that must cross potential runout paths. In this paper, the transient process of a submarine landslide impacting a pipeline is modelled using the material point method (MPM) with an enhanced contact algorithm. For simplicity, the partially-embedded pipeline is assumed to be fixed in space. The Herschel-Bulkley rheological model is incorporated to reflect the dependence of the undrained shear strength of the sliding mass on the shear strain rate. The behaviour of the mass flowing over the pipe was reproduced by allowing separation between the pipe and the sliding mass. The horizontal impact forces predicted by the MPM are verified by comparison with those estimated using a computational fluid dynamics approach. The impact forces are interpreted with a hybrid model considering the combined effects due to the soil's inertia, its shear strength, and also the asymmetric static pressure of the sliding material. The coefficients for the three terms are retrieved by a best-fit to the results of an extensive parametric study. The effect of the projected height of the pipe above the seabed is also investigated.
机译：海底滑坡对冲击力的定量评估对于必须穿越潜在跳动路径的管道的安全运行具有重要意义。在本文中，海底滑坡撞击管道的瞬态过程是使用具有增强接触算法的材料点方法（MPM）进行建模的。为简单起见，假定部分嵌入的管道在空间上是固定的。并入了Herschel-Bulkley流变模型，以反映滑动块体不排水的剪切强度对剪切应变率的依赖性。通过允许管道和滑动块之间的分离来再现流过管道的块的行为。通过与使用计算流体动力学方法估算的水平冲击力进行比较，可以验证MPM预测的水平冲击力。用混合模型解释冲击力，该模型考虑了土壤惯性，剪切强度以及滑动材料的不对称静压力所产生的综合影响。这三个项的系数通过最适合广泛的参数研究结果的方法进行检索。还研究了管道在海底之上的预计高度的影响。

著录项

  • 来源
    《Ocean Engineering》 |2017年第1期|21-28|共8页
  • 作者

    Dong Youkou; Wang Dong; Randolph Mark F.;

  • 作者单位

    Tech Univ Hamburg TUHH, Inst Geotech & Baubetrieb, D-21079 Hamburg, Germany|Univ Western Australia, Ctr Offshore Fdn Syst, Perth, WA, Australia;

    Univ Western Australia, Ctr Offshore Fdn Syst, Perth, WA, Australia|Ocean Univ China, Shandong Prov Key Lab Marine Environm & Geol Engn, 238 Songling St, Qingdao 266100, Peoples R China;

    Univ Western Australia, Ctr Offshore Fdn Syst, 35 Stirling Highway, Perth, WA 6009, Australia;

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

    Dynamic analysis; Impact; Material point method; Pipelines; Submarine landslide;

    机译：动力分析;影响;物点法;管道;海底滑坡;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号