Local Scour around a Square Structure due to a Runup Tsunami

Bibliographic Information

Other Title
  • 遡上津波による陸上構造物周辺の局所洗掘に関する研究

Abstract

The 2004 Indian Ocean tsunami caused large-scale sediment transport, resulting in substantial scour around a huge number of structures. In this study, tsunami-induced local scour around a land-based structure with a rectangular cross-section on a sand foundation was investigated with a series of hydraulic model experiments and numerical simulations. It was, as a result, revealed that local scour around the seaward corner of the structure could be evaluated with not only flow velocities on the sand foundation but effective stresses near the surface of the sand substrate, that is, flow velocities with a large Shields number resulted in a scour hole around the seaward corner of the structure during restricting force between sand particles fell down due to a decrease in effective stresses inside the sand substrate.

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Details 詳細情報について

  • CRID
    1390001204550869760
  • NII Article ID
    130003808180
  • DOI
    10.2208/proce1989.54.856
  • ISSN
    18848222
    09167897
  • Data Source
    • JaLC
    • Crossref
    • CiNii Articles
    • KAKEN
  • Abstract License Flag
    Disallowed

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