Abstract
Installation of steel sheet piles at the toe of a levee has been adopted as a seismic countermeasure against liquefaction-induced lateral spreading of the levee foundation. Since installation of the sheet piles alters the seepage flow in the foundation ground, use of permeable steel sheet piles is proposed. Holes sufficient to secure the water flow in the ground on the sheet pile might induce internal erosion due to the concentrated seepage flow. In this study, development of seepage-induced internal erosion near the holes on the permeable steel sheet pile is examined by physical model test and numerical simulation. Comparison between physical model test and numerical analysis reveals that the experimental result can be captured by the numerical analysis as a whole. However, the clogging of fines in the experiment cannot be modelled, as detachment of fines from the soil skeleton and fines redeposition are not separately considered in the erosion model used.
H. Kokaki and T. Maruyama—Formerly, Tokyo Institute of Technology, Tokyo, Japan.
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Takahashi, A., Kokaki, H., Maruyama, T., Horikoshi, K. (2019). Numerical and Physical Modelling of Seepage-Induced Internal Erosion Around Holes on Permeable Sheet Pile. In: Bonelli, S., Jommi, C., Sterpi, D. (eds) Internal Erosion in Earthdams, Dikes and Levees. EWG-IE 2018. Lecture Notes in Civil Engineering , vol 17. Springer, Cham. https://doi.org/10.1007/978-3-319-99423-9_19
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DOI: https://doi.org/10.1007/978-3-319-99423-9_19
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