Extended concentric arches model for piled beam-supported embankments

Nguyen, Van Duc; Luo, Qiang; Xue, Yuan; Wang, Tengfei; Zhang, Liang; Zhang, Dongqing

doi:10.1016/j.compgeo.2023.105517

Cited by 3 publications

(2 citation statements)

References 39 publications

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“…For example, Chen [55] set up a model test system and found that a taller embankment results in a higher stress concentration ratio, consistent with that reported by Han and Murugesan [56,57]. Nguyen [58] also found that the efficacy E increases with increasing embankment height.…”

Section: Stress Statesupporting

confidence: 73%

The Soil-Arching Effect in Pile-Supported Embankments: A Review

Wang,

Ye,

Wang

et al. 2024

Buildings

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Pile-supported embankments are widely used in foundation treatments, owing to their safety, efficient construction, and economy. The soil-arching effect is a key load-transferring mechanism in a pile-supported embankment, and it reduces the even settlement on the embankment surface. In recent years, researchers and engineers have conducted extensive research on the soil-arching phenomenon in pile-supported embankments. This paper reviews relevant studies on the effect of soil arching in pile-supported embankments in order to better understand the mechanism and influencing factors of the distribution of the arching effect. First, the development history of the practice and theory related to pile-supported embankments is discussed. This is followed by a review of theoretical studies on the soil-arching effect, load distribution and soil deformation on pile-supported embankments (with and without geogrid reinforcement), and structures and factors influencing soil arching. The results of these studies are summarized, and finally, topics for future research are suggested, providing references for the design and maintenance of civil infrastructure.

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Section: Stress Statesupporting

confidence: 73%

The Soil-Arching Effect in Pile-Supported Embankments: A Review

Wang,

Ye,

Wang

et al. 2024

Buildings

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“…Piled embankments, as an economically effective ground improvement technique, are widely utilized in constructing highways and railways in areas with soft soils [1,2]. The piles in a piled embankment system typically penetrate through the soft soil stratum and are embedded in a stronger underlying bedrock for load-bearing purposes [3][4][5][6][7]. However, a floating piled embankment is a more cost-effective choice in regions with thicker soft soil.…”

Section: Introductionmentioning

confidence: 99%

Bearing Capacity of Foundation and Soil Arching in Rigid Floating Piled Embankments: Numerical Study

Zhuang,

Hu,

Fan

2023

Applied Sciences

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The definition of rigid floating piles in engineering applications remains ambiguous. This paper develops a numerical model of piled embankments and the modeling method is verified through engineering cases. Utilizing this model, the critical bearing capacity of the foundation for rigid floating piles is firstly determined to be approximately 150 kPa. Subsequent parametric studies show that soil arching in a rigid floating piled embankment begins to occur when the ratio of the embankment height to the clear pile spacing H/(s − a) ≥ 1.6. However, plastic failure does not occur in rigid floating piled embankments due to the weaker foundation, indicating that soil arching cannot fully develop. Finally, factors of the embankment fill properties are examined and it is shown that the large friction angle and high cohesion greatly enhance soil arching and reduce settlement in the embankment. The vertical stress above the subsoil decreased by 34.9% with an increase in the friction angle from 20° to 40°. Also shown is that the increase in the cohesion from 1 kPa to 7 kPa reduced the settlement on the top of and the base of embankment by approximately 72% and 58%, respectively. It has also been found that rigid floating piles rely on end resistance and skin friction to sustain the superimposed load.

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