Development of a numerical simulation model for suction rate using CADMAS-SURF

Silarom, Kornvisith; Yamamoto, Yoshimichi; Yoshizawa, Syota; Charusrojthanadech, Nunthawath

doi:10.1051/matecconf/201819202063

Development of a numerical simulation model for suction rate using CADMAS-SURF

Author(s)

Silarom, Kornvisith

Yamamoto, Yoshimichi

Yoshizawa, Syota

Charusrojthanadech, Nunthawath

Date Issued

August 14, 2018

Type

Conference Paper

DOI

10.1051/matecconf/201819202063

Abstract

There are many cases where a coastal dike or a seawall constructed on a very shallow area was broken by a wave of a smaller height than the designed height. In many of these cases, the reason of the destruction was the suction phenomena. This phenomenon happens when waves reaches the front of the dike or the seawall, the wave pressure scours the front soil of the structure until it reaches the lowest edge of the structure followed by sucking of backfilling material of the structure. In this research, the authors proposed the numerical model which can calculate the suction rate with elapsed time by applying the pore water pressure and the flow velocity inside a dike or a seawall using "CADMAS-SURF". The authors proposed three coefficients for improving the calculated pressure from CADMAS-SURF. The reliability of the model was confirmed by reproducing the suction phenomena in Hirono Coast of Japan.

Citation

Matec Web of Conferences, 192, 2018