Stability analysis of unsaturated loess slopes subjected to extreme rainfall incorporating creep effects

Duan, Guanghui; Song, Fei; Wang, Huaning; Rodriguez-Dono, Alfonso; Wang, Liujiang; Chen, Jianfeng

doi:10.1016/j.compgeo.2024.106231

Computers and Geotechnics

2024

DOI: 10.1016/j.compgeo.2024.106231

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Stability analysis of unsaturated loess slopes subjected to extreme rainfall incorporating creep effects

Guanghui Duan,

Fei Song,

Huaning Wang

et al.

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Cited by 5 publications

References 49 publications

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An Analytical Insight Into Stability Analysis of Unsaturated Multi‐Layered Slopes Subjected to Rainfall Infiltration

Yuan,

Qin,

Yang

et al. 2024

Num Anal Meth Geomechanics

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Slopes in nature usually present layered characteristics, and its stability is susceptible to rainfall events. Considering that current analytical solutions are only suited to simulate the rainfall infiltration of double‐layered infinite unsaturated slopes, an analytical procedure is hence proposed in this study to tackle the consideration of multiple layers. The variable separation method and transfer matrix method are combined to derive the analytical solution of pore water pressure (PWP) for simulating rainfall infiltration in layered infinite unsaturated slopes. After having validated the proposed model and analytical solutions by comparing with existing literature and numerical simulation, the closed‐form solution of PWP is incorporated into the limit equilibrium for assessing slope stability. A three‐layer slope is selected as an example for further discussion. PWP distribution and factor of safety are calculated, considering the effects of saturated hydraulic conductivity and thickness of the upper layer, intensity of antecedent and subsequent rainfall, and varied soil unit weight along the depth. The slope stability subjected to rainfall effects is consistent with the variation of PWP. The proposed analytical solutions provide a simple and practical avenue for computing PWP distribution and evaluating the stability of multi‐layered slopes under rainfall conditions, which can also serve as a benchmark for numerical solutions.

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An Analytical Insight Into Stability Analysis of Unsaturated Multi‐Layered Slopes Subjected to Rainfall Infiltration

Yuan,

Qin,

Yang

et al. 2024

Num Anal Meth Geomechanics

View full text Add to dashboard Cite

show abstract

Research on the spatiotemporal evolution of deformation and seismic dynamic response characteristics of high-steep loess slope on the northeast edge of the Qinghai-Tibet Plateau

Xu,

Song,

et al. 2024

Bull Eng Geol Environ

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Study on the steady-state and dynamic rheological characteristics of five clayey materials

Wei,

Li,

Sun

et al. 2025

Construction and Building Materials

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Stability analysis of unsaturated loess slopes subjected to extreme rainfall incorporating creep effects

Cited by 5 publications

References 49 publications

An Analytical Insight Into Stability Analysis of Unsaturated Multi‐Layered Slopes Subjected to Rainfall Infiltration

An Analytical Insight Into Stability Analysis of Unsaturated Multi‐Layered Slopes Subjected to Rainfall Infiltration

Research on the spatiotemporal evolution of deformation and seismic dynamic response characteristics of high-steep loess slope on the northeast edge of the Qinghai-Tibet Plateau

Study on the steady-state and dynamic rheological characteristics of five clayey materials

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