Cut soil slope stability analysis along National Highway at Wozeka–Gidole Road, Ethiopia

Cut soil slope stability analysis along National Highway at Wozeka–Gidole Road, Ethiopia The Wozeka–Gidole road in Ethiopia experiences frequent slope failure and triggered during road construction. This study identified the actually failed slope to verify numerical results of both limit equilibrium method (LEM) and finite element method (FEM) with the actually failed slope. Modeling of the actually failed slope with the FEM-based PLAXIS software and LEM-based SLOPE/W software had been used to calculate the factor of safety (FOS). The comparative study of the LE methods shows that The Bishop, Janbu, Morgenstern-Price, GLE and Spencer methods yield in most cases identical FOS for circular slip surface. However, the ordinary method may underestimate the FOS. All LE methods, except the Ordinary methods, estimate higher FOS than FE analysis in PLAXIS. Numerical results of both FEM and LEM verify instability of the slope. In general, the model provides the possible major causes of slope instability and their possible remedial measures in the study area. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Modeling Earth Systems and Environment Springer Journals

Cut soil slope stability analysis along National Highway at Wozeka–Gidole Road, Ethiopia

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Publisher
Springer International Publishing
Copyright
Copyright © 2018 by Springer International Publishing AG, part of Springer Nature
Subject
Earth Sciences; Earth System Sciences; Math. Appl. in Environmental Science; Statistics for Engineering, Physics, Computer Science, Chemistry and Earth Sciences; Mathematical Applications in the Physical Sciences; Ecosystems; Environment, general
ISSN
2363-6203
eISSN
2363-6211
D.O.I.
10.1007/s40808-018-0465-6
Publisher site
See Article on Publisher Site

Abstract

The Wozeka–Gidole road in Ethiopia experiences frequent slope failure and triggered during road construction. This study identified the actually failed slope to verify numerical results of both limit equilibrium method (LEM) and finite element method (FEM) with the actually failed slope. Modeling of the actually failed slope with the FEM-based PLAXIS software and LEM-based SLOPE/W software had been used to calculate the factor of safety (FOS). The comparative study of the LE methods shows that The Bishop, Janbu, Morgenstern-Price, GLE and Spencer methods yield in most cases identical FOS for circular slip surface. However, the ordinary method may underestimate the FOS. All LE methods, except the Ordinary methods, estimate higher FOS than FE analysis in PLAXIS. Numerical results of both FEM and LEM verify instability of the slope. In general, the model provides the possible major causes of slope instability and their possible remedial measures in the study area.

Journal

Modeling Earth Systems and EnvironmentSpringer Journals

Published: Apr 16, 2018

References

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