Approximate Solution to the Sokolovskiĭ Concave Slope at Limiting Equilibrium

Jeldes, Isaac A.; Vence, Nicholas E.; Drumm, Eric C.

doi:10.1061/(asce)gm.1943-5622.0000330

Cited by 28 publications

(19 citation statements)

References 18 publications

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“…The Mohr-Coulomb failure criterion was used in the analyses, and circular and combined slide types were chosen. The Janbu method (Janbu 1973) was used in the LE analyses since the length of the slope debris is greater than its thickness and it has a combined slide hazard.…”

Section: Modeling and Stability Analysesmentioning

confidence: 99%

“…Each human activity that impacts the natural environment changes the natural morphology, stress conditions, and natural balance (Alemdag et al 2013(Alemdag et al , 2014, resulting in the triggering of various landslide types. Many landslides throughout the world have been investigated and reported by researchers (e.g., Genc 1993;Fell et al 1996;Hungr et al 1999;Tarcan and Koca 2001;Ferreira 2007;Mantovani et al 2010;Jaiswal et al 2011) andmany researchers (e.g., Fellenius 1936;Janbu 1954aJanbu , b, 1968Janbu , 1973Bishop 1955;Bishop and Morgenstern 1960;Lowe and Karafiath 1959;Morgenstern and Price 1967;Spencer 1967;US Army Corps of Engineers 1970;Sarma 1973;Chung and Fabbri 1999;Tunusluoglu et al 2007;Gurocak et al 2008;Kahatadeniya et al 2009;Nefeslioglu et al 2010;Di Maio et al 2010;Dag et al 2011;Ferrari et al 2011;Zheng 2012;Liu and Zhao 2013;Jeldes 2013;Gu et al 2014;Alemdag et al 2015) have conducted slope stability studies as part of the landslide literature. Different methods have been used in these studies, which were conducted at either local or regional scale according to the type of problem and the properties of the soil.…”

Section: Introductionmentioning

confidence: 98%

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Stability assessment of high-steep cut slope debris on a landslide (Gumushane, NE Turkey)

Kaya

Alemdağ

Dağ

et al. 2015

Bull Eng Geol Environ

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The objective of this study was to examine the effects on the stability of slope debris of planned slope excavations around the vicinity of Gumushane Imam-Hatip High School in NE Turkey. To assess the geotechnical properties of slope debris along the determined cross-sections, four exploration boreholes with a total length of 100 m were drilled and undisturbed soil samples were collected. Slope debris is composed of two soil zones and its depth varies between 15 m and 21 m. It was determined from the experimental results that the soil class of the upper zone is CL (low plasticity clay) and CH (high plasticity clay) whereas the soil class of the lower zone is SC (clayey sand) and GC (clayey gravel). Peak cohesions of the upper and lower zones were 26.3 kPa and 10.2 kPa, and their peak internal friction angles were 16°and 24°, respectively. Limit equilibrium (LE) analyses for the slopes were evaluated using Slide v5.0 software for the pre-excavation, post-excavation, and supported cases. The results of LE analyses showed the existence of a landslide along the SW direction; the landslide would extend to cover the whole region if the excavation were to be performed without applying engineering measures. Finally, the precautions to be taken were determined and stability analyses for the supported case were evaluated. These analyses showed that the active lateral forces applied by the proposed retaining walls to the cut slope should be 8325 and 3103 kN, respectively.

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Section: Modeling and Stability Analysesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 98%

Stability assessment of high-steep cut slope debris on a landslide (Gumushane, NE Turkey)

Kaya

Alemdağ

Dağ

et al. 2015

Bull Eng Geol Environ

View full text Add to dashboard Cite

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“…Engineered slopes and earth structures are commonly built with a planar profile in cross section. However, it has been shown that concave slopes offer higher stability (e.g., Sokolovskiĭ 1960; Utili and Nova 2007;Jeldes et al 2013) and better erosion resistance (e.g., Rieke-Zapp and Nearing 2005;Schor and Gray 2007;Jeldes et al 2014) when compared with the equivalent planar slopes. Utili and Nova (2007) demonstrated the higher stability of concave slopes and argued that such higher stability may also explain the concave shape of perimeter walls of some typical Japanese castles (Nishida et al 2005;Utili and Nova 2007).…”

Section: Introductionmentioning

confidence: 99%

“…1 shows an example of a natural concave slope located on US-101, north of the Alsea Bay Bridge in Waldport, Oregon. Recent advances in auto-guided construction equipment along with increased precession in three-dimensional mapping technology allow and facilitate construction of such concave profiles in engineered slopes and earth structures (Jeldes et al 2013;Jeldes et al 2014). For geosynthetic-reinforced soil structures, Vahedifard et al (2016a) showed that D r a f t 4 using concave facing profiles can decrease the required tensile strength of the reinforcement by up to 30% under static and seismic conditions.…”

Section: Introductionmentioning

confidence: 99%

“…Few attempts have been made to analyze concaves slopes and to quantify the contribution of such concave profiles to stability and erosion resistance of earthen slopes (e.g., Sokolovskiĭ 1960;Utili and Nova 2007;Jeldes et al 2013;Gray 2013). Sokolovskiĭ (1960) used the slip-line field theory and showed that the slope surface at the limit equilibrium (LE) state has a concave profile.…”

Section: Introductionmentioning

confidence: 99%

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Optimal profile for concave slopes under static and seismic conditions

2016

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This study presents a methodology to determine the stability and optimal profile for slopes with concave cross section under static and seismic conditions. Concave profiles are observed in some natural slopes suggesting that such geometry is a more stable configuration. In this study, the profile of a concave slope was idealized by a circular arc defined by a single variable, the mid-chord offset (MCO). The proposed concave profile formulation was incorporated into a limit equilibrium–based log spiral slope stability method. Stability charts are presented to show the stability number, MCO, and mode of failure for homogeneous slopes corresponding to the most stable configuration under static and pseudostatic conditions. It is shown that concave profiles can significantly improve the stability of slopes. Under seismic conditions, the impact of concavity is most pronounced. Good agreement was demonstrated upon comparison of the results from the proposed method against those attended from a rigorous upper bound limit analysis. The proposed methodology, along with recent advances in construction technology, can be employed to use concave profiles in trenches, open mine excavations, earth retaining systems, and naturally cemented and stabilized soil slopes. The results presented provide a useful tool for preliminary evaluation for adopting such concave profiles in practice.

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