An Analysis of Floating Geogrid-Reinforced Pile-Supported Embankments Containing Deep Softened Soil

Wang, Hao; Li, Xiaoliang; Li, Weichuan; Jian, Wu; Xing, Yang; Song, Xiuguang; Liu, Mingpeng

doi:10.1007/s13369-021-05587-7

Cited by 7 publications

(2 citation statements)

References 29 publications

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“…However, they also observed that when the floating piles begin to penetrate the underlying soil under a heavy load, the load efficiency of the piles decreases as the embankment and surcharge load increase. Zhang et al [27] constructed a small-scale model to compare the behavior of both floating piles and end-bearing piles. Their findings indicate that the stress concentration ratio under end-bearing piles is higher than that under floating piles and increases with larger pile spacing, and the floating piles contribute in decreasing the differential settlements relative to the end-bearing piles.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Investigation of Geosynthetic-Reinforced Pile-Supported Embankments for Loose Sandy Soils

Alsirawan,

Alnmr,

Koch

2023

Buildings

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This research focuses on advancing the geosynthetic-reinforced pile-supported embankment technology over loose sandy soil. A small-scale laboratory model supported by floating piles and a geotextile layer was constructed, and a numerical model was validated against laboratory measurements. This study aims to achieve a more uniform distribution of the load over all piles of the system via a parametric study that analyzes the influence of embankment fill material, horizontal reinforcement scenarios, pile cap shape, and pile type. The results demonstrate that using embankment fill with high cohesion and internal friction properties leads to a significant reduction of 46% and 37% in maximum settlements, respectively, and similarly, results in a noteworthy reduction of 48% and 50% in differential settlements. The incorporation of two geotextile layers contributes to a reduction of up to 30% in maximum settlement. The utilization of plus-shaped caps in small areas, with an area equal to three times the cross-sectional area of the pile, has been substantiated as the preeminent approach for the reduction of settlements. Piles with caps also present better behavior regarding differential settlements compared to longer piles and piles with bigger diameters under the same volume condition.

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Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Investigation of Geosynthetic-Reinforced Pile-Supported Embankments for Loose Sandy Soils

Alsirawan,

Alnmr,

Koch

2023

Buildings

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“…However, the studies mentioned above did not differentiate the bearing capacity of the soil stratum where the pile tips are located. Despite some comparative studies between floating piles and end-bearing piles (e.g., King et al [22]; Yadav et al [23]; Shen et al [24]; Zhang et al [25]; Reshma et al [26]), the load-bearing mechanism of embankments supported by rigid floating piles still requires further investigation.…”

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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Field and 3D Numerical Investigations of the Performances of Stiffened Deep Cement Mixing Column-Supported Embankments Built on Soft Soil

Phutthananon

Jongpradist²,

Wonglert³

et al. 2022

Arab J Sci Eng

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An Analysis of Floating Geogrid-Reinforced Pile-Supported Embankments Containing Deep Softened Soil

Cited by 7 publications

References 29 publications

Experimental and Numerical Investigation of Geosynthetic-Reinforced Pile-Supported Embankments for Loose Sandy Soils

Experimental and Numerical Investigation of Geosynthetic-Reinforced Pile-Supported Embankments for Loose Sandy Soils

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

Field and 3D Numerical Investigations of the Performances of Stiffened Deep Cement Mixing Column-Supported Embankments Built on Soft Soil

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