Continuous slip surface method for stability analysis of heterogeneous vertical trenches

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JAMSHIDI CHENARI R.; KAMYAB FARAHBAKHSH H.; IZADI A.

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Journal Paper

Paper Information

Journal: Scientia Iranica Year:2020 | Volume:27 | Issue:6 (Transactions A: Civil Engineering) Page(s): 2657-2668

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Title

Continuous slip surface method for stability analysis of heterogeneous vertical trenches

Author(s)

JAMSHIDI CHENARI R. | KAMYAB FARAHBAKHSH H. | IZADI A. | Issue Writer Certificate

Keywords

Critical excavation depth

Random field theory

Continuous slip surface

Vertical trench

Un-drained shear strength

Abstract

Evaluating the reliability of trenches against sliding failure is complicated since most alluvial deposits are heterogeneous and spatially variable. This means that rather than perfectly circular or linear failure surfaces, trench failure tends to be more complex, following the weakest path or zones through the material; thereby, a new method called Continuous Slip-Surface (CSS) was adopted to calculate the Critical excavation depth. CSS runs an algorithm to seek a Continuous slip surface. The Finite Difference Method (FDM) coupled with random field theory and CSS method is well suited for calculating slope stability since it allows the failure surface to seek out the weakest path through the soil. For an unsupported vertical cut, it was shown that the Critical excavation depth acquired from CSS method was indeed an upper bound solution. In terms of numerical and analytical terms, an idealized variation model was used to illustrate that increasing the Un-drained shear strength density attenuated the effect of shear strength variability. Correlation structure of the input variable was shown to in fluence the results, although its behavior varied on low and high scales of fluctuation.

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APA: Copy

JAMSHIDI CHENARI, R., KAMYAB FARAHBAKHSH, H., & IZADI, A.. (2020). Continuous slip surface method for stability analysis of heterogeneous vertical trenches. SCIENTIA IRANICA, 27(6 (Transactions A: Civil Engineering)), 2657-2668. SID. https://sid.ir/paper/982165/en

Vancouver: Copy

JAMSHIDI CHENARI R., KAMYAB FARAHBAKHSH H., IZADI A.. Continuous slip surface method for stability analysis of heterogeneous vertical trenches. SCIENTIA IRANICA[Internet]. 2020;27(6 (Transactions A: Civil Engineering)):2657-2668. Available from: https://sid.ir/paper/982165/en

IEEE: Copy

R. JAMSHIDI CHENARI, H. KAMYAB FARAHBAKHSH, and A. IZADI, “Continuous slip surface method for stability analysis of heterogeneous vertical trenches,” SCIENTIA IRANICA, vol. 27, no. 6 (Transactions A: Civil Engineering), pp. 2657–2668, 2020, [Online]. Available: https://sid.ir/paper/982165/en

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