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Stability of sheet-pile wall in liquefiable soil: LEAP-2020 and LEAP-2022 centrifuge tests at Ehime University
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DOI：10.1016/j.soildyn.2024.108743.png)
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Abstract
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Six centrifuge models were tested as part of the Liquefaction Experiments and Analysis Projects (LEAP-2020 and LEAP-2022). The models consisted of saturated Ottawa F65 sand deposits supported by sheet-pile walls. The objective of this study is to confirm the reproducibility of the experiments and evaluate the model responses to the testing parameters, including the soil density, embedment depth of the sheet pile, and input acceleration. This study quantitatively addresses the significance of the degree of saturation by highlighting the increase in unwanted liquefaction resistance due to imperfect saturation. Duplicate models confirmed the experimental reproducibility of the excess pore pressure response and sheet pile displacement. The stability of the sheet pile was evaluated using a simple pseudo-static model that considered dynamic earth and hydrodynamic pressures.
Keywords:
LEAP project
Centrifuge modeling
Liquefaction
Retaining wall
Sheet pile
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