Critical Review of Two-dimensional Slope Stability Analysis by Discontinuity Layout Optimization, Limit Equilibrium and Strength Reduction Methods

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Cheng Y M..
Cheng Y M..
α Hong Kong Polytechnic University Hong Kong Polytechnic University

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Critical Review of Two-dimensional Slope Stability Analysis by Discontinuity Layout Optimization, Limit Equilibrium and Strength Reduction Methods

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Abstract

While the limit equilibrium and finite element methods have been used by the engineers for a variety of slope stability problems for many years, the use of limit analysis has started to attract the attentions of engineers and researchers in recent years. In this paper, the differences between these three major methods will be studied in terms of factors of safety and the locations of critical failure surfaces. From the study, it is found that even with the use of recent versions of finite element or limit analysis programs, surprising and unreasonable results can still be found frequently, and the use of the classical limit equilibrium appears to be robust over various difficult problems with relatively complex geologic conditions. On the other hand, the differences between the three methods can be considered as small for normal problems.

References

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Funding

No external funding was declared for this work.

Conflict of Interest

The authors declare no conflict of interest.

Ethical Approval

No ethics committee approval was required for this article type.

Data Availability

Not applicable for this article.

How to Cite This Article

Cheng Y M... 2026. \u201cCritical Review of Two-dimensional Slope Stability Analysis by Discontinuity Layout Optimization, Limit Equilibrium and Strength Reduction Methods\u201d. Global Journal of Research in Engineering - J: General Engineering GJRE-J Volume 22 (GJRE Volume 22 Issue J4): .

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Alt: Academic journal article analyzing 2D slope stability, optimization, and equilibrium methods.
Journal Specifications

Crossref Journal DOI 10.17406/gjre

Print ISSN 0975-5861

e-ISSN 2249-4596

Keywords
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GJRE-J Classification: DDC Code: 620.001515353 LCC Code: TA347.F5
Version of record

v1.2

Issue date

January 20, 2023

Language
en
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While the limit equilibrium and finite element methods have been used by the engineers for a variety of slope stability problems for many years, the use of limit analysis has started to attract the attentions of engineers and researchers in recent years. In this paper, the differences between these three major methods will be studied in terms of factors of safety and the locations of critical failure surfaces. From the study, it is found that even with the use of recent versions of finite element or limit analysis programs, surprising and unreasonable results can still be found frequently, and the use of the classical limit equilibrium appears to be robust over various difficult problems with relatively complex geologic conditions. On the other hand, the differences between the three methods can be considered as small for normal problems.

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Critical Review of Two-dimensional Slope Stability Analysis by Discontinuity Layout Optimization, Limit Equilibrium and Strength Reduction Methods

Cheng Y M..
Cheng Y M.. Hong Kong Polytechnic University

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