Seepage flow analysis on caisson-type breakwater reinforced with sheet piles by using the SPH method

Tetsuro Goda, Mitsuteru Asai

Research output: Chapter in Book/Report/Conference proceedingConference contribution


the understanding of the collapse mechanism of a caisson-type breakwater has been an urgent task to reduce the projected damages caused by next millennium tsunamis. A variety of research has been done to understand this phenomenon further. From the current observations, the seepage-induced piping phenomenon, which is caused by the bearing capacity degradation inside a mound, is determined as one of the main causes. With the aim of moderating the bearing capacity degradation, a design to reinforce a mound by utilizing sheet piles has been proposed. Although the effectiveness of sheet piles installation has been confirmed through some experimental tests, the optimized design to determine the dimension and position of the sheet piles has not been established yet. Numerical simulation, which can evaluate the effect of the installed sheet piles accurately, is desired to design durable and economical breakwaters. In this study, a 3D numerical simulation based on a particle method is implemented by considering sheet piles inside a mound, and its accuracy is discussed by comparing it with experimental tests.

Original languageEnglish
Title of host publicationTechno-Ocean 2016
Subtitle of host publicationReturn to the Oceans
PublisherInstitute of Electrical and Electronics Engineers Inc.
Number of pages7
ISBN (Electronic)9781509024452
Publication statusPublished - Mar 30 2017
Event16th Techno-Ocean, Techno-Ocean 2016 - Kobe, Japan
Duration: Oct 6 2016Oct 8 2016

Publication series

NameTechno-Ocean 2016: Return to the Oceans


Other16th Techno-Ocean, Techno-Ocean 2016

All Science Journal Classification (ASJC) codes

  • Oceanography
  • Water Science and Technology
  • Energy Engineering and Power Technology
  • Ocean Engineering
  • Instrumentation


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