# Analysis of slope stability with imprecise soil properties using uncertain sets

Zhou, X, Li, J, Liu, Z and Tang, Y 2019, 'Analysis of slope stability with imprecise soil properties using uncertain sets', Mathematical Problems in Engineering, vol. 2019, pp. 1-9.

 Document type: Journal Article Journal Articles

Title Analysis of slope stability with imprecise soil properties using uncertain sets Zhou, X Li, J Liu, Z Tang, Y 2019 Mathematical Problems in Engineering 2019 1 9 9 Hindawi There are many uncertainties with respect to the assessment of slope stability, and those associated with soil properties should be given particular attention. The uncertainty theory provides an alternative to treat these uncertainties using parochial cognitive sources. A novel methodology is proposed to evaluate the stability of slopes based on an uncertain set. The soil properties involved in the deterministic methods, i.e., shear strength parameters and unit weight, are expressed as uncertain sets, and their membership functions can be assumed to be triangular or trapezoidal for a homogeneous or two-layered slope, respectively. The parameter values of membership functions are designed according to the means and variations of the soil properties, and then the expected safety factor can be calculated through the operational laws. Two numerical examples including a homogeneous slope and a two-layered slope illustrate the suitability of the proposed methodology. The relationship between the variation in the safety factor and the changes in the soil properties is investigated; moreover, the determination of the parameter values of membership is also discussed. Civil Geotechnical Engineering Models Differential equations Random variables 10.1155/2019/1062347 Copyright © 2019 Xuejun Zhou et al. Open access article distributed under the Creative Commons Attribution License (CC BY 4.0) 1024-123X
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