An Embankment Stability Analysis Using Finite Element Method Constructed over Soft Consolidating Soil Improved from Lime Columns and Prefabricated Vertical Drains

Prakash, K.; Krishnamoorthy, Agrahara; Maddodi, Balakrishna; Kumar, Mohit; Girish, M G

doi:10.30919/es8d643

Cited by 2 publications

(1 citation statement)

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“…To mitigate these issues, it is crucial to have a deep understanding of the hydraulic behavior of the system. Failure to address seepage problems adequately can result in severe consequences, such as the contamination of neighboring soil and groundwater, slope instability, and structural failure of containment systems [29,30]. Furthermore, numerical modeling techniques such as the Finite Element Method (FEM) analysis have proven to be highly valuable in the analysis and management of seepage scenarios within soil-geo-membrane systems [31].…”

Section: Introductionmentioning

confidence: 99%

Seepage Analysis and Optimization of Reservoir Earthen Embankment with Double Textured HDPE Geo-Membrane Barrier

Onyelowe,

Nimbalkar,

Reddy

et al. 2023

Civ Eng J

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This research paper focuses on conducting a steady state seepage analysis along with the downstream slope factor of safety using the Modified Bishops method in a poorly compacted earthen embankment and optimizing the same reservoir earthen embankment in a case study located near Sadiyavav village in Junagadh district in Gujarat, India. The study site, situated at 21°32'06.5"N and 70°37'26.7"E, is renowned for its Asiatic lions. The analysis and optimization were performed with a double-textured High-Density Polyethylene (HDPE) Geo-membrane barrier. Previously, designs and numerical solutions proposed homogenous embankments and too poorly compacted with no drainage arrangements, which led to anisotropic conditions within the section and water seeping out, cutting the phreatic line. The paper presents the documented improvements in the factor of safety achieved through the seepage analysis and the optimization of the HDPE Geo-membrane barrier. Two improvement techniques were studied using the “Limiting Equilibrium-Finite Element Method” (LS-FEM). The first using (HDPE) Geo-membrane stabilized with gabions, and the second alternative using HDPE Geo-membrane with gabions in addition to rock toe. The study results showed improvements in the downstream slope stability for the two alternatives by 3% and 10%, respectively. Doi: 10.28991/CEJ-2023-09-11-07 Full Text: PDF

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Section: Introductionmentioning

confidence: 99%

Seepage Analysis and Optimization of Reservoir Earthen Embankment with Double Textured HDPE Geo-Membrane Barrier

Onyelowe,

Nimbalkar,

Reddy

et al. 2023

Civ Eng J

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Variations of tunnelling resistance between CNTs with strain in composites: non-monotonicty and influencing factors

Wang¹,

Liu²,

Liu³

et al. 2022

Nanotechnology

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The electro-mechanical response of conductive carbon-nanotube(CNT)-polymer composites is vital when they are used as smart-sensing materials. Clarifying the variation trend of resistance with strain is the key to design and regulate the piezoresistive property of such material. Here, we present some finite element simulations to predict the electro-mechanical response using a geometrical model comprising two hollow cylindrical CNTs and a cuboid matrix. The electrical contact between CNTs is represented by some elements which account for quantum tunnelling effects and capture the sensitivity of conductivity to separation. Different from classical simulations using solid model or one-dimensional beam model, in which the tunnelling resistance between two CNTs changes monotonously with strain, the results in this work show that the trend is non-monotonic in some cases, i.e., it increases at first and then decreases with the uniaxial compressive strain when the elastic modulus of the matrix is high. In addition, factors affecting the different variation trends are discussed in details, which include geometric model, elastic modulus and Poisson’s ratio of the matrix, and orientation angle.

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An Embankment Stability Analysis Using Finite Element Method Constructed over Soft Consolidating Soil Improved from Lime Columns and Prefabricated Vertical Drains

Cited by 2 publications

References 0 publications

Seepage Analysis and Optimization of Reservoir Earthen Embankment with Double Textured HDPE Geo-Membrane Barrier

Seepage Analysis and Optimization of Reservoir Earthen Embankment with Double Textured HDPE Geo-Membrane Barrier

Variations of tunnelling resistance between CNTs with strain in composites: non-monotonicty and influencing factors

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