Deformation analysis of seawall during earthquake by DEM-FEM coupled analysis method

M. Kanatani, H. Tochigi, T. Kawai, K. Nishi, H. Ishikawa, T. Takeda

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

Abstract

The authors have developed the two-dimensional DEM-FEM coupled analysis method to predict the deformation of the seawall covered with the armoured embankment in the man-made island during earthquakes. This analysis method is separated into two parts, DEM part and FEM part. Movements of the armour units are calculated in DEM part and deformations of the caisson, rubble mound, sand seabed and back fill are calculated in FEM part considering the nonlinearity of the soil materials based on the effective stress. Dynamic interaction between each part are considered by exchanging the nodal displacements of the finite elements or nodal forces converted from contact forces of the distinct elements at the boundaries between DEM and FEM domain. The numerical simulations of dynamic centrifuge model tests of the seawall are conducted to verify the applicability of this method. Results of the numerical simulations are in good agreement with the test results from the viewpoints of residual displacements of the caisson and residual deformations of the sand seabed and back fill.

Original languageEnglish
Title of host publicationEarthquake geotechnical engineering. Proceedings of the 2nd international conference on earthquake geotechnical engineering, Lisbon, June 1999. (3 vols.).
EditorsP.S. Seco e Pinto, P.S. Seco e Pinto
PublisherA.A. Balkema
Pages303-308
Number of pages6
ISBN (Print)9058091163
Publication statusPublished - 1999
Externally publishedYes
EventProceednings of the 2nd international conference on earthquake geotechnical engineering 1999. - Lisbon, Portugal
Duration: 2099 Jun 212099 Jun 25

Other

OtherProceednings of the 2nd international conference on earthquake geotechnical engineering 1999.
Country/TerritoryPortugal
CityLisbon
Period99/6/2199/6/25

ASJC Scopus subject areas

  • Earth and Planetary Sciences(all)
  • Environmental Science(all)

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