Optimum design of nailed soil slopes

Patra, Chittaranjan; Basudhar, P. K.

doi:10.1007/s10706-004-2146-7

Cited by 41 publications

(7 citation statements)

References 10 publications

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“…An optimum design of nailed soil slopes also proposed by Patra and Basudhar [16] and they underlined that consideration of internal equilibrium in addition to overall equilibrium significantly alters the position of the critical slip surface and thus affects the nail volume required to achieve a desired factor of safety. They also pointed out that upwardly oriented nails with longer nails in the upper part of the slope generally lead to an optimal design.…”

Section: State Of the Art Of Nailed Soil Slopes Researchmentioning

confidence: 99%

On the Nailed Soil Slopes Research Development

Munawir¹

2017

GEOMATE

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The slope stability was researched over the past decades, understandings the behavior of nailed soil slopes, with their properties and characteristics, have guided to development of enhanced recognizing of the variation in nailed soil slopes parameters. Failures can arise over time, hence the identification of the necessities and the restrictions of laboratory and in situ testing for evaluating nailing parameter have to be deeply understood. Many researcher have enriched and refined the knowledges of the principles of soil nailing mechanics that associate soil behavior to slope stability and factor of safety. This paper is aimed to explore some of important state of the art development of nailed soil slope and analytical techniques extended by extensive investigation of the mechanics of slope stability analyses. The most significant effective parameter that play important role in slope safety factor in almost of many works are length, nailing angle, and distance between center to center of nails. Slope angle, connection of nailed head, the distance with toe and nail diameter were also the points that cannot be neglected in their study. Choosing the proper cable or pile element in the finite element modeling and the mobilized both axial and shear forces are also reviewed in this paper.

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Section: State Of the Art Of Nailed Soil Slopes Researchmentioning

confidence: 99%

On the Nailed Soil Slopes Research Development

Munawir¹

2017

GEOMATE

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“…Vibrations with lower frequency values are computed by pseudo-static approach. While exhibiting the response of dynamic loads on a soil structure, the inertia and time dependence of load on sub-soil are also taken into consideration while carrying out the analysis [16][17][18][19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Numerical Analysis of Behavior of Geo-Synthetically Reinforced Slopes Under Seismically Active Conditions

et al. 2022

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Slopes are the unsupported inclined soil mass. Stability of slopes has always been a governing factor for carrying out construction on slopes. Both static and dynamic loads can cause failure to a slope yet there are considerate methods to determine the bearing capacity and factor of safety for slopes under static loads while as dynamic loads specifically earthquake loads are generally unpredictable. This paper checks effect of installation of geogrid layers in soil slopes under seismic loads. This study has been carried out using Finite Element Based Software PLAXIS incorporating CD-ROM (SMC) file of WNW OF FERNDALE, CA on 10th March 2014.The model was scaled as 1x .5 x .5 m with slope angle of 32? and a model footing of 50 mm which was loaded suitably. During the study numerical results of deformation compared with experimental results. It was found that addition of geogrid layers enhanced the factor of safety upto appreciable extent. Optimum depth and optimum number of geogrid layers were also determined. The percentage increase in factor of safety at different levels of installation was also recorded.

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“…Finally, they presented an optimal technique for obtaining the design with the lowest cost with a target function based on the total length of the nails, which is a good estimate of the total cost of the soil-nailed wall. Patra and Basudar (2005) [8] developed a general computational method for optimally designing soil-nailed slopes. Their approach provides a formulation for limit equilibrium that satisfies the overall and internal equilibrium and considers the effect of the tensile strength of the reinforcement components on the calculation of the strength of the nailed slopes.…”

Section: Introductionmentioning

confidence: 99%

Optimum Design for Soil Nailing to Stabilize Retaining Walls Using FLAC3D

Nowroozi

Hashemolhosseini

Afrazi

et al. 2021

J. ADV. ENG. COMPUT.

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The behavior of a reinforced soil system depends on parameters such as the structural geometry, execution steps, density and mechanical properties of the soil, density of reinforcement materials, deformation, and flexural stiffness of reinforcement materials. A critical parameter in the design of a soil-nailed system is the optimal use of materials with respect to cost. It is necessary to find an optimal design that is cost-effective within the parameters affecting the behavior of the nailed system. A common problem in nailed excavations is an increase in the excavation depth beyond the initial design of the wall, which will require more reinforcements. In this research, we used one approach not used before the method is placing one and two rows of long nails placed at the appropriate depth. In this study, a comparison between safety factor, horizontal displacement, and lateral pressure behind the wall has been made at two nail placement depths using FLAC3D finite difference software that reveals the optimal depth for efficiency is approximately at the middle of the finished wall height. When the number of reinforcement nails with the same lengths was considered, the installation of two rows of nails in comparison with 5 or 3 rows of nails reduced the maximum wall displacement to a greater extent. A greater factor of safety was achieved. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium provided the original work is properly cited.

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Optimum design of nailed soil slopes

Cited by 41 publications

References 10 publications

On the Nailed Soil Slopes Research Development

On the Nailed Soil Slopes Research Development

Numerical Analysis of Behavior of Geo-Synthetically Reinforced Slopes Under Seismically Active Conditions

Optimum Design for Soil Nailing to Stabilize Retaining Walls Using FLAC3D

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