Numerical Modeling of Recycled Plastic Pin Reinforced Embankment over Soft Soils

Islam, Azijul; Zaman, Md. Nur Basit; Badhon, Faria Fahim; Bhandari, Prabesh; Hossain, Md. Sahadat

doi:10.1061/9780784483411.051

Cited by 2 publications

(3 citation statements)

References 13 publications

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“…Unterreiner et al [19], Babu et al [20], and Cheuk et al [21] applied 2D FE or finite difference methods for the analysis of nailed slopes, and many researchers have used this method for different applications, including the undrained capacity and stability of footing lying on layered slopes as well [22][23][24][25][26]. Moreover, various researchers have used this method correctly to predict the soil deformation, stress, nail forces, and factor of safety of the slopes [27][28][29][30].…”

Section: Introductionmentioning

confidence: 99%

“…The performance of the nailed slope has been analyzed both numerically and experimentally to study the different nail parameters and soil-nail interactions under various loading conditions [4][5][6][33][34][35][36]. Tang and Jiang [30] reported the highest FS when the inclination of the nail was 15 • with the horizontal in LEM. On the other hand, Sabhahit et al [37] conducted a numerical study and stated that the horizontal nail is the optimal direction except for the lower-most nails.…”

Section: Introductionmentioning

confidence: 99%

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Parametric Assessment of Soil Nailing on the Stability of Slopes Using Numerical Approach

Elahi

Islam

2022

Geotechnics

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This study focuses on the stability analysis of slopes reinforced by soil nailing. The effects of slope geometry and nail parameters on slope stability are investigated using PLAXIS 2D. Four different slope angles and three different backslope angles are considered for assessing the effect of slope geometry on the stability of a nailed slope. The factor of safety (FS) was found to decrease with the increasing values of the slope angle as well as the backslope angle. The influence of different nail parameters (nail inclination, nail length, and nail spacing) was also investigated. With the increase in nail inclination, FS was found to increase initially and thereafter, reaching a peak value followed by a drop in FS. The optimum nail inclination was found between 0 and 25° at a horizontal angle, depending on the different slope geometries, which is evident from observation of the slip surface as well. With the increase of nail length, FS increases; however, the increase was small after L/H (length of nail/height of slope) reached a value of 0.9. Moreover, increasing the length of the nail was found to be effective in reducing the lateral movement of the slope. The maximum nail forces are observed in the bottom-most row of nails and increase with the depth. The inclusion of soil nailing with optimum nail parameters can increase FS by 29–75% depending on the slope geometry, signifying the effectiveness of nailing.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Parametric Assessment of Soil Nailing on the Stability of Slopes Using Numerical Approach

Elahi

Islam

2022

Geotechnics

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“…According to the authors, the compressive strength of RPPs is sufficient to support the vertical loads coming from the superstructure. By transferring the load from soil to pins, it may also be used effectively as reinforcement to improve the bearing capacity of unsuitable soils and to reduce excessive settlement (22)(23)(24).…”

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confidence: 99%

Performance of Recycled Plastic Pins for Improving Unsuitable Foundation Soil

Badhon

Islam

Bhandari

et al. 2023

Transportation Research Record: Journal of the Transportation R

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Civil engineering infrastructures constructed on unsuitable foundation soil are prone to large deformation and bearing capacity failure. A common and traditional approach employed by the Texas Department of Transportation (TxDOT) is to remove in situ soil and replace it with suitable fill material. However, this method can be time-consuming and expensive. To minimize construction time and cost, the use of recycled plastic pins (RPPs) for ground improvement needs to be evaluated as an effective and sustainable technique. This study aims to evaluate the effectiveness of RPPs in improving unsuitable foundation soils. An extensive field-testing program was conducted on RPP-reinforced soil. In the field, four identical sections were constructed, of which three were reinforced with RPPs of different sizes and spacings, and the fourth was left unreinforced so that it could act as a control. Performance monitoring for all four test sections was conducted using inclinometer and pressure plates for more than 2 years. According to the field monitoring data, the reinforced section settlement was reduced by up to 84%, and RPPs carried 78% of the total load. Therefore, RPPs show promising potential for improving unsuitable foundation soil.

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Numerical Modeling of Recycled Plastic Pin Reinforced Embankment over Soft Soils

Cited by 2 publications

References 13 publications

Parametric Assessment of Soil Nailing on the Stability of Slopes Using Numerical Approach

Parametric Assessment of Soil Nailing on the Stability of Slopes Using Numerical Approach

Performance of Recycled Plastic Pins for Improving Unsuitable Foundation Soil

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