Details
| Original language | English |
|---|---|
| Pages (from-to) | 124-138 |
| Number of pages | 15 |
| Journal | KSCE journal of civil engineering |
| Volume | 28 |
| Early online date | 1 Dec 2023 |
| Publication status | Published - Jan 2024 |
Abstract
In this paper, factor of safety (FOS) considering three-dimensional (3D) and nonlinear shear strength of geomaterials is formulated based on the modified spatial mobilized plane (MSMP) model. The MSMP model has the desirable features of considering 3D strength and the nonlinear shear behavior of soils, compared with the widely used Mohr-Coulomb (M-C) model. The MSMP model is developed from the spatial mobilized plane model by relating the internal friction angle to the mean effective stress within the framework of critical state soil mechanics. Based on the developed MSMP model and the geometric relationships in the mobilized effective normal-shear stress plane, the nonlinear 3D FOS is defined as the ratio of mobilized shear strength to shear stress. The developed nonlinear 3D FOS is applied to slope parametric and case studies. The parametric studies show significant differences between the nonlinear 3D FOS by the MSMP model and the traditional linear two-dimensional (2D) FOS by the M-C model. The case study shows that the MSMP model and nonlinear 3D FOS can better capture the developed failure slope zone than the M-C model and linear 2D FOS.
Keywords
- Factor of safety, Modified spatial mobilized plane, Mohr-Coulomb, Nonlinear shear strength, Slope, Three-dimensional strength
ASJC Scopus subject areas
- Engineering(all)
- Civil and Structural Engineering
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In: KSCE journal of civil engineering, Vol. 28, 01.2024, p. 124-138.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Case Study
T2 - Slope Stability Assessment Considering 3D Nonlinear Shear Strength
AU - Liu, Kai
AU - Wang, Guocai
AU - Yuan, Peng
AU - Zhang, Huijian
N1 - Funding Information: This research is sponsored by the National Natural Science Foundation of China (Grant No. 52178364).
PY - 2024/1
Y1 - 2024/1
N2 - In this paper, factor of safety (FOS) considering three-dimensional (3D) and nonlinear shear strength of geomaterials is formulated based on the modified spatial mobilized plane (MSMP) model. The MSMP model has the desirable features of considering 3D strength and the nonlinear shear behavior of soils, compared with the widely used Mohr-Coulomb (M-C) model. The MSMP model is developed from the spatial mobilized plane model by relating the internal friction angle to the mean effective stress within the framework of critical state soil mechanics. Based on the developed MSMP model and the geometric relationships in the mobilized effective normal-shear stress plane, the nonlinear 3D FOS is defined as the ratio of mobilized shear strength to shear stress. The developed nonlinear 3D FOS is applied to slope parametric and case studies. The parametric studies show significant differences between the nonlinear 3D FOS by the MSMP model and the traditional linear two-dimensional (2D) FOS by the M-C model. The case study shows that the MSMP model and nonlinear 3D FOS can better capture the developed failure slope zone than the M-C model and linear 2D FOS.
AB - In this paper, factor of safety (FOS) considering three-dimensional (3D) and nonlinear shear strength of geomaterials is formulated based on the modified spatial mobilized plane (MSMP) model. The MSMP model has the desirable features of considering 3D strength and the nonlinear shear behavior of soils, compared with the widely used Mohr-Coulomb (M-C) model. The MSMP model is developed from the spatial mobilized plane model by relating the internal friction angle to the mean effective stress within the framework of critical state soil mechanics. Based on the developed MSMP model and the geometric relationships in the mobilized effective normal-shear stress plane, the nonlinear 3D FOS is defined as the ratio of mobilized shear strength to shear stress. The developed nonlinear 3D FOS is applied to slope parametric and case studies. The parametric studies show significant differences between the nonlinear 3D FOS by the MSMP model and the traditional linear two-dimensional (2D) FOS by the M-C model. The case study shows that the MSMP model and nonlinear 3D FOS can better capture the developed failure slope zone than the M-C model and linear 2D FOS.
KW - Factor of safety
KW - Modified spatial mobilized plane
KW - Mohr-Coulomb
KW - Nonlinear shear strength
KW - Slope
KW - Three-dimensional strength
UR - http://www.scopus.com/inward/record.url?scp=85178392103&partnerID=8YFLogxK
U2 - 10.1007/s12205-023-2264-5
DO - 10.1007/s12205-023-2264-5
M3 - Article
AN - SCOPUS:85178392103
VL - 28
SP - 124
EP - 138
JO - KSCE journal of civil engineering
JF - KSCE journal of civil engineering
SN - 1226-7988
ER -