Stability of Breakwaters under Tsunami Overflow

DOI 4 Citations

Bibliographic Information

Other Title
  • 津波越流時における防波堤の安定性に関する研究

Abstract

A large number of breakwaters were damaged by the Great East Japan Earthquake on March 11, 2011. Many were destroyed by tsunami overflows. In this research, physical experiments were conducted using various breakwater cross-sections to clarify the exact failure mechanisms caused by tsunami overflows. Using the experimental results, the cause for the breakwaters' collapse can be verified using the safety factor of sliding, overturning and bearing capacity of each breakwater. If the overflows scoured the rubble mound, the safety margin was estimated using a post-scouring cross-section. Scouring by overflows decreases the rubble mound's bearing capacity, increasing the likelihood that breakwater would collapse. When the scouring reaches the bottom of the caisson, it generates a hole that the caisson gradually falls into.

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Details 詳細情報について

  • CRID
    1390282680295914368
  • NII Article ID
    130004551221
  • DOI
    10.2208/kaigan.69.i_916
  • ISSN
    18838944
    18842399
  • Text Lang
    ja
  • Data Source
    • JaLC
    • Crossref
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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