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Scour below pipelines and around vertical piles due to second-order random waves plus a current

机译:由于二阶随机波加上电流,在管道下方和垂直桩周围冲刷

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摘要

This paper provides a method by which the scour depth below pipelines and around single vertical piles for combined random waves plus current including effects of second-order wave asymmetry can be derived. Here the empirical formulas proposed by Sumer and Fredsoe [1996. Scour below pipelines in combined waves and current. In: Proceedings of the 15th OMAE Conference, Florence, Italy. Vol. 5, ASME, New York, pp. 595-602] for pipelines, and by Sumer and Fredsoe [2002. The mechanics of scour in the marine environment. World Scientific, Singapore] for vertical piles are used together with Stokes second-order wave theory by assuming the basic harmonic wave motion to be a stationary Gaussian narrow-band random process. Comparisons are made with the Sumer and Fredsoe [1996. Scour below pipelines in combined waves and current. In: Proceedings of the 15th OMAE Conference, Florence, Italy. Vol. 5, ASME, New York, pp. 595-602: 2001. Scour around pile in combined waves and current. Journal of Hydraulic Engineering, 127(5), 403-411] data for linear random waves plus current. An example of calculation is also presented.
机译:本文提供了一种方法,可以得出管道下方和单个竖向桩周围冲刷深度的组合随机波加电流的冲刷深度,包括二阶波不对称的影响。这里,Sumer和Fredsoe [1996年提出了经验公式。在波和电流的共同作用下冲刷管道下方。在:第15届OMAE会议论文集,意大利佛罗伦萨。卷5,ASME,纽约,第595-602页),Sumer和Fredsoe [2002年]。海洋环境中的冲刷机理。通过将基本谐波运动假定为平稳的高斯窄带随机过程,将竖向桩与斯托克斯二阶波动理论一起用于竖桩。与Sumer和Fredsoe [1996。在波和电流的共同作用下冲刷管道下方。在:第15届OMAE会议论文集,意大利佛罗伦萨。卷5,ASME,纽约,第595-602页:2001年。在波浪和水流的共同作用下冲刷桩身。水利工程学报,127(5),403-411]线性随机波加电流的数据。还提供了计算示例。

著录项

  • 来源
    《Ocean Engineering》 |2009年第8期|605-616|共12页
  • 作者单位

    Department of Marine Technology, Norwegian University of Science and Technology, NO-7491 Trondheim, Norway;

    Department of Marine Technology, Norwegian University of Science and Technology, NO-7491 Trondheim, Norway;

    Department of Marine Technology, Norwegian University of Science and Technology, NO-7491 Trondheim, Norway;

    Department of Marine Technology, Norwegian University of Science and Technology, NO-7491 Trondheim, Norway;

    Department of Marine Technology, Norwegian University of Science and Technology, NO-7491 Trondheim, Norway;

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

    scour depth; pipeline; vertical pile; shear stress; nonlinear random waves; current; stochastic method;

    机译:冲刷深度管道;立桩剪应力非线性随机波当前;随机方法;

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