Show/Hide Menu
Hide/Show Apps
Logout
Türkçe
Türkçe
Search
Search
Login
Login
OpenMETU
OpenMETU
About
About
Open Science Policy
Open Science Policy
Open Access Guideline
Open Access Guideline
Postgraduate Thesis Guideline
Postgraduate Thesis Guideline
Communities & Collections
Communities & Collections
Help
Help
Frequently Asked Questions
Frequently Asked Questions
Guides
Guides
Thesis submission
Thesis submission
MS without thesis term project submission
MS without thesis term project submission
Publication submission with DOI
Publication submission with DOI
Publication submission
Publication submission
Supporting Information
Supporting Information
General Information
General Information
Copyright, Embargo and License
Copyright, Embargo and License
Contact us
Contact us
Probabilistic Slope Stability Analyses: Effects of the Coefficient of Variation and the Cross-Correlation of Shear Strength Parameters
Date
2017-03-15
Author
Oğuz, Emir Ahmet
Yalçın, Yağızer
Huvaj Sarıhan, Nejan
Metadata
Show full item record
This work is licensed under a
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
.
Item Usage Stats
223
views
0
downloads
Cite This
The assessment of the safety level of natural slopes, road cuts, embankments and levees require consideration of uncertainties and variability in material properties. In this study, for a number of slope geometries, including a real-life landslide case, probability of failure (PF) and the most critical failure surface are investigated with and without cross-correlation of shear strength properties. Slopes having different traditionally-defined factor of safety (FS) levels are studied. The uncertainty of soil properties are considered by different levels of coefficient of variation (COV). Limit equilibrium method is used for slope stability analyses and geotechnical material properties are considered to have normal statistical distribution. The results of this analyses show that the PF and the critical failure surface is significantly influenced by the COV level, the consideration of cross correlation of shear strength parameters, and by the traditional FS level of the slopes. The inverse relation between FS and PF is demonstrated to be nonlinear and the COV level has significant effect on this relationship. Results indicate that the deterministic slope stability analyses resulting in a single FS value is no longer sufficient to evaluate the safety of a slope in geotechnical engineering, and that the deterministic critical failure surface with minimum FS value is not always the most critical slip surface. The results presented in this study could be useful for further understanding of probabilistic slope stability and the effects of soil variability/uncertainty, with the aim of better geotechnical risk evaluation and communication.
Subject Keywords
Probability
,
Soil properties
,
Slopes
,
Slope stability
,
Correlation
,
Shear strength
,
Material properties
,
Failure analysis
,
Relıabılıty
,
Safety
URI
https://hdl.handle.net/11511/46582
DOI
https://doi.org/10.1061/9780784480458.036
Collections
Department of Civil Engineering, Conference / Seminar
Suggestions
OpenMETU
Core
Probabilistic Slope Stability Analysis: A Case Study
Huvaj Sarıhan, Nejan (2018-10-01)
Probabilistic slope stability analyses are becoming more and more popular to evaluate the safety level of slopes and associated risk and reliability, especially in the recent years. The probabilistic approach can take into account the uncertainties and natural variability in material properties, as well as in environmental factors, by using various statistical distribution functions (such as normal, lognormal etc.) for random variables. It is already noted by various researchers that, a slope with a determi...
Application of recent optimization algorithms on slope stability problems
Azizi, Sadra; Pekcan, Onur; Department of Civil Engineering (2018)
Stability analysis of earth slopes in general involves determining the minimum factor of safety (FS) associated with the most critical failure surface. This objective is too challenging to accomplish considering the broad diversity of slope problems in geometry, geotechnical parameters of the soil, location of the groundwater table, and condition of the external loadings. Robust optimization techniques, however, have recently performed well in determining safety factors of various man-made and natural slope...
Probabilistic slope stability analysis using limit equilibrium, finite element and random finite element methods
Akbaş, Burak; Huvaj Sarıhan, Nejan; Department of Civil Engineering (2015)
In recent years, geotechnical engineers are moving more towards decision-making processes based on reliability assessment, since accounting for soil variability and carrying out probabilistic analyses result in significant savings in designs, and possible prediction of failure events. Objectives of this study are to investigate and compare different methodologies for probabilistic slope stability analyses as well as with deterministic methodologies, in terms of factor of safety, the probability of failure, ...
Assessment of cut slope stability in western Black Sea Region (Turkey)
Özköse, Merve; Topal, Tamer; Department of Geological Engineering (2019)
Cut slopes are intensely prone to weathering in the cause of excavation effects. Weathering effects can reduce strength of rocks and results in instabilities in the long run. By the reasons of rocks containing joints, fractures, faults, bedding planes and pore spaces, they are likely to be weathered because of wetting-drying cycles, climate changes, and chemical action of solutions absorbed. This study is mainly concerned with the slope stability analysis for sixteen permanent cut slopes that are composed o...
Prediction of swelling behavior of expansive soils using modified free swell index, methylene blue and swell oedometer tests
Jaleh Forouzan, Amir; Çokça, Erdal; Department of Civil Engineering (2016)
Expansive soils are recognized as problematic soils that impose several challenges for civil engineers. Such soils undergo significant volume change in case water penetrates into them, and they shrink as they lose moisture. Lightly-loaded engineering structures such as pavements, single story buildings, railways and walkways may experience severe damages when they are founded on such soils. Determination of expansive soils and quantifying their swelling potential and pressure caused by their expansion are e...
Citation Formats
IEEE
ACM
APA
CHICAGO
MLA
BibTeX
E. A. Oğuz, Y. Yalçın, and N. Huvaj Sarıhan, “Probabilistic Slope Stability Analyses: Effects of the Coefficient of Variation and the Cross-Correlation of Shear Strength Parameters,” 2017, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/46582.