The influence of geosynthetics design on the behavior of reinforced soil embankments subjected to rockfall impacts

Korini, Oltion; Bost, Marion; Rajot, Jean-Pierre; Bennani, Yassine; Freitag, Nicolas

doi:10.1016/j.enggeo.2021.106054

Cited by 23 publications

(3 citation statements)

References 10 publications

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“…Regarding the full-scale tests, most of these were developed on reinforced RPEs [13,14,[18][19][20][21][22][23].…”

Section: Literature Analysismentioning

confidence: 99%

Numerical Simulation of Rockfall Protection Embankments in Natural Soil

Vigna,

Marchelli,

De Biagi

et al. 2023

Geosciences

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Rockfall events represent a significant hazard in mountainous regions, putting human safety and critical infrastructure at risk. Various mitigation devices are available, among which, Rockfall protection embankments (RPEs) located in natural soil are passive defense work suitable for high-energy and high-frequency events. Currently, limited research has been conducted in this area, with the Austrian standard ONR 24810 providing the sole codified design method. A parametrical analysis involving both the RPE geometry and the impact features was developed by Abaqus/Explicit FEM code, with 2270 cases overall. The research aims to identify conditions under which RPEs effectively stop falling blocks, focusing on two failure mechanisms: the block pass over the RPE after impacting the upstream side bank and the RPE structural collapse. Additionally, the interaction between RPEs and their foundations during the impact is explored. The results provide valuable insights into the dynamic behavior of these structures. In terms of design considerations, this study offers analytical equations to quantify crater depth and foundation stress induced by the impact. Furthermore, design charts are developed to assess the block passing over verification and the structural collapse verification.

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“…Regarding the full-scale tests, most of these were developed on reinforced RPEs [13,14,[18][19][20][21][22][23].…”

Section: Literature Analysismentioning

confidence: 99%

Numerical Simulation of Rockfall Protection Embankments in Natural Soil

Vigna,

Marchelli,

De Biagi

et al. 2023

Geosciences

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“…Ref. [13] found horizontal reinforcement more effective than vertical reinforcement in reducing deformation and preventing failures in soil embankments, offering guidance for optimizing rockfall protection designs. Ref.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the Performance of Gabion Walls as a High-Energy Rockfall Protection System Using 3D Numerical Analysis: A Case Study

Angın,

Karahasan

2024

Applied Sciences

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Cases of rockfalls that occurred on a slope in the Selendi District of Manisa Province are evaluated in this article. Field studies are evaluated and different measures are examined to reduce rockfall risk. Drone flights are used to evaluate previous studies and obtain 1/1000 scale digital topographic maps. These maps are used to create a 3D (three-dimensional) solid model of the project site, and on-site surveys are conducted to identify source rock locations and free blocks that pose a risk. Those 3D analyses are used to determine the paths, jump heights, and energies of the blocks in motion. The data from the 3D maps are used to determine the most appropriate remediation methods. The structural behavior of the recommended gabion wall, which is designed at a certain height and width as a result of rockfalls, has been examined. Structural behavior is determined by simulation based on the finite element model. Within the scope of this study, the ANSYS Workbench program is used. The “Explicit Dynamics” analysis type in ANSYS Workbench was chosen to examine the rockfall effect.

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“…The swelling deformation is entirely restrained when a rigid structure protects the slope. Under the circumstances, the expansive soil will produce a large lateral swelling pressure, causing the destruction of the structure [6,7]. As a flexible reinforced material, geogrid can make up for the above shortcomings of rigid structures.…”

Section: Introductionmentioning

confidence: 99%

Resilient and Sustainability Analysis of Flexible Supporting Structure of Expansive Soil Slope

et al. 2022

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In order to improve the ability of the flexible support structure to resist, recover and adapt to the failure of expansive soil slope, it is necessary to analyze and study its structural resilience systematically. Based on the long-term field monitoring test of expansive soil slope with flexible support along the south line of the Guinan key project, combined with the whole life cycle assessment (LCA), this paper discusses the theory and method of resilient design of expansive soil slope with a flexible support structure. The results show that the variation trend of geogrid strain is basically consistent with that of soil pressure at the side of the slope. It increases gradually with the increase in rainfall in the rainy season. When the rainfall decreases significantly in the dry season, the geogrid will shrink accordingly to realize the periodic regulation of lateral deformation of expansive soil. The life cycle assessment analysis shows that the carbon emission of the flexible support structure is 10% of that of the rigid support structure, and the resource and energy consumption of the flexible support structure is about 50% lower than that of the rigid support structure.

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The influence of geosynthetics design on the behavior of reinforced soil embankments subjected to rockfall impacts

Cited by 23 publications

References 10 publications

Numerical Simulation of Rockfall Protection Embankments in Natural Soil

Numerical Simulation of Rockfall Protection Embankments in Natural Soil

Evaluation of the Performance of Gabion Walls as a High-Energy Rockfall Protection System Using 3D Numerical Analysis: A Case Study

Resilient and Sustainability Analysis of Flexible Supporting Structure of Expansive Soil Slope

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