Seismic Landslide Risk Assessment: Random Large-Deformation Analysis in Spatially Cross-correlated Cohesive-Frictional Soils

DOI

10.2991/978-94-6463-900-1_66How to use a DOI?

Keywords

Landslide Runout; Earthquake; Spatial Variability; Large Deformation Analysis; Cross-correlation; Risk Assessment

Abstract

Predicting landslide runout behavior, is critical for hazard assessment and risk mitigation. However, the inherent spatial variability of soil properties, particularly cohesion and friction angle, introduces substantial uncertainty in landslide modeling. This study presents a probabilistic framework for seismic landslide risk assessment by integrating large-deformation finite element analysis with spatially cross-correlated random fields. The Coupled Eulerian-Lagrangian method is employed to capture the complex failure and post-failure behavior of landslides under seismic loading. The results demonstrate that spatially variable cohesion and friction angle significantly influence failure surface geometry, runout distance, and landslide velocity. Comparisons between deterministic and probabilistic analyses reveal that deterministic approaches systematically underestimate landslide hazards. A risk assessment framework is further developed by incorporating the exceedance probability of runout distance, providing quantitative insights for infrastructure setback design and hazard mitigation. The proposed approach offers a feasible tool for geotechnical engineers and decision-makers in landslide-prone regions.

Copyright

© 2025 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - Xuejian Chen
AU  - Rita Leal Sousa
PY  - 2025
DA  - 2025/12/07
TI  - Seismic Landslide Risk Assessment: Random Large-Deformation Analysis in Spatially Cross-correlated Cohesive-Frictional Soils
BT  - Proceedings of the Rocscience International Conference 2025 (RIC 2025)
PB  - Atlantis Press
SP  - 668
EP  - 675
SN  - 2589-4943
UR  - https://doi.org/10.2991/978-94-6463-900-1_66
DO  - 10.2991/978-94-6463-900-1_66
ID  - Chen2025
ER  -