Stability Study of a Tide Embankment Subjected to Sea Level Variations Using Centrifugal Model Tests

Abstract

To investigate the behavior of dredged-sea-sand fill compacted inside tide embankments with a damaged geosynthetic mat, centrifugal model tests and numerical simulation were conducted, both considering variations in sea level. The results from the three centrifugal model tests demonstrate that the subsidence of the dredged-sea-sand fill inside tide embankments with a damaged geosynthetic mat was strongly affected by the loss of dredged-sea-sand into the filter layers with large particles and a decrease in the bearing capacity of the filter layers with small particles. In addition, a comparison of the test and simulation results confirms that the loss of sand into the filter layer and the subsidence of the dredged-sea-sand fill were well reproduced by the numerical simulation.

The Influence of Mixing Degree between Coarse and Fine Particles on the Strength of Offshore and Coast Foundations

“…The complex formation process results in distinct stratification of the offshore and coastal soils, i.e., uneven mixing between coarse and fine particles. For example, the stratigraphical results from the Shetland Islands show distinct stratification of coarse and fine particles, which is confirmed to have been caused by three tsunamis between 8000 and 1500 years ago [5]; some artificial activities also create layered coastal foundations [6]. Previous studies have shown that the uniformity of mixing between particles affects the local and even the global properties of granular materials [7,8].…”

A Study on the Agricultural Reservoir Behavior through Numerical Analysis and the Centrifuge Model Test in Earthquakes

“…To define the behavioral characteristics of reservoir embankments, seismic-wave-charged dynamic centrifuge model tests were conducted to measure and analyze the earthquake response acceleration, displacement, and pore water pressure [4,5]. The acceleration amplification characteristics show that the amplification is large at the top.…”