2024 Volume 80 Issue 16 Article ID: 23-16155
The material properties inside river embankments are uncertain, depending on the embankment construction history. With the recent intensification of rainfall, there's a need to evaluate the resilience of embankments during overtopping. In this study, we propose an evaluation method for material uncertainty in overtopping erosion analysis. We've realized an approximate multi-solution analysis for different grain-size distributions in river embankments, and assessed the impact of overtopping erosion due to material uncertainty. In this paper, we enhance the analysis method through an extension of the scouring sand and suspended sand models, considering the grain-size distribution effect on erosion resistance, using principal component analysis for dimension reduction, and employing Gaussian process regression for an alternative analysis. We demonstrate the effectiveness of the proposed method through an analysis of the grain-size distribution scatter in real river embankments.
