Multilayered low-strength geogrid-reinforced piled embankment

Wang, Kangyu; ZhuangYan,; LiuHanlong,; XiaoHenglin,

doi:10.1680/jgere.18.00001

Cited by 9 publications

(2 citation statements)

References 47 publications

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“…Additionally, the incorporation of two layers of reinforcement with a stiffness of 500 kN/m showed a 28% reduction in the embankment base settlement. Wang et al [57] conducted a numerical simulation of a multilayered geogrid-reinforced pile-supported embankment. The results indicated that the incorporation of a geosynthetic layer effectively facilitated the transfer of stress, including traffic load, from the weak soil to the pile.…”

Section: Use Of Geogrid In Pile-supported Railway Embankmentsmentioning

confidence: 99%

Experimental and Computational Analyses of Sustainable Approaches in Railways

Farooq,

Meena,

Punetha

et al. 2024

Infrastructures

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Railway transportation is widely recognized as an environment-friendly and sustainable means for conveying freight and passengers over long distances. This article investigates the effectiveness of utilizing scrap tire rubber granules and geosynthetics to enhance track performance in response to the growing demands for railway transport and the consequent escalation of train-induced loading. A multi-faceted methodology, incorporating experimental, numerical, and analytical techniques, is employed to examine the efficacy of these sustainable approaches. Results from three-dimensional (3D) finite element (FE) analyses conducted on slab tracks for high-speed railways reveal that the addition of a resilient layer, comprising scrap tire rubber granules, reduces vertical stress within the track substructure. Laboratory investigations on an innovative composite material consisting of soil, scrap rubber granules, and polyurethane demonstrate its potential to enhance track performance. Findings from two-dimensional (2D) FE analyses conducted on pile-supported railway embankments highlight an enhanced transfer of load to the pile head following the installation of a geogrid layer at the embankment base. Finally, the results from the analytical approach indicate a reduction in track settlement and a decrease in the track geometry degradation rate on reinforcing the ballast layer with 3D cellular geoinclusion. The novelty of this study lies in the comprehensive assessment of the innovative composite material under drained and cyclic loading conditions, the investigation of the influence of train loading on geosynthetic tension and the load transfer mechanism in railway embankments, and the development of an innovative computational methodology capable of assessing the effectiveness of 3D cellular inclusions in improving the ballasted railway track performance. The findings from this article underscore the effectiveness of these sustainable approaches in mitigating the challenges posed by increased loads on railway tracks, providing valuable insights for the ongoing efforts to optimize railway transportation infrastructure.

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Section: Use Of Geogrid In Pile-supported Railway Embankmentsmentioning

confidence: 99%

Experimental and Computational Analyses of Sustainable Approaches in Railways

Farooq,

Meena,

Punetha

et al. 2024

Infrastructures

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“…In this study, three improvement techniques, (a) increasing the raft thickness; (b) increasing the number of piles; and (c) adding geotextile layers, have been used to enhance the performance of the piled raft. The stiffness value of 1500 kN/m/m is chosen to represent the common woven geotextile used in the road projects in Australia [32,33]. The case (i) is considered to see the effect of these techniques on the performance of piled raft.…”

Section: Improved Performance Of Piled Raftmentioning

confidence: 99%

Effect of Water Drawdown and Dynamic Loads on Piled Raft: Two-Dimensional Finite Element Approach

Meena

Nimbalkar

2019

Infrastructures

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The piled raft foundations are widely used in infrastructure built on soft soil to reduce the settlement and enhance the bearing capacity. However, these foundations pose a potential risk of failure, if dynamic traffic loading and ground conditions are not adequately accounted in the construction phase. The ground conditions are complex because of frequent groundwater fluctuations. The drawdown of the water table profoundly influences the settlement and load sharing capacity of piled raft foundation. Further, the dynamic loading can also pose a potential risk to these foundations. In this paper, the two-dimensional finite element method (FEM) is employed to analyze the impact of water drawdown and dynamic loading on the stability of piled raft. The seismic response of piled raft is also discussed. The stresses and deformations occurring in and around the raft structure are evaluated. The results demonstrate that water drawdown has a significant effect on the stability and seismic response of piled raft. Various foundation improvement methods are assessed, such as the use of geotextile and increasing thickness of the pile cap, which aids of limiting the settlement.

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Ranking of influence factors and control technologies for the post-construction settlement of loess high-filling embankments

Zhu

2020

Computers and Geotechnics

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Multilayered low-strength geogrid-reinforced piled embankment

Cited by 9 publications

References 47 publications

Experimental and Computational Analyses of Sustainable Approaches in Railways

Experimental and Computational Analyses of Sustainable Approaches in Railways

Effect of Water Drawdown and Dynamic Loads on Piled Raft: Two-Dimensional Finite Element Approach

Ranking of influence factors and control technologies for the post-construction settlement of loess high-filling embankments

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