Numerical simulation of installation of jacked piles in sand using material point method

Lorenzo, Raydel; Cunha, Renato Pinto da; Neto, Manoel Porfírio Cordão; Nairn, John A.

doi:10.1139/cgj-2016-0455

Cited by 29 publications

(5 citation statements)

References 38 publications

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“…The MPM has been integrated to a spectrum of geotechnical problems, including landslide [6,7], tunnel stability analysis [8][9][10], pile driving [11][12][13], subsidence problems in landfills [14], and the installation of geocontainers [15]. Some applications offer solutions to soil-geosynthetic problems and are elaborated on in Section 3.…”

Section: History Of Mpmmentioning

confidence: 99%

Application of material point method in modeling soil-geosynthetics interactions-a literature survey

Liu,

Lin,

Pokharel

2024

IOP Conf. Ser.: Earth Environ. Sci.

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The material point method (MPM) has garnered significant attention in recent years owing to its advantages in solving soil–water-structure interaction problems involving large deformations in geotechnical engineering. The MPM combines the benefits of point-based and mesh-based approaches (finite element method) with both Eulerian computational mesh and continuum descriptions of materials. The successful integration of MPM in simulated landslides, internal erosion, and excavation has been frequently reported. However, solving the soil–geosynthetic interaction problem with the MPM has not been explored, although such problems often entail large deformations. The goal of this study is to collate studies on the simulation of geosynthetics and their interactions with soil using MPM. This paper first discusses the basics of MPM and the formation of thin membrane materials using MPM. It also includes limited applications of MPM in simulating soil–geosynthetic interactions. The applications demonstrate that the MPM is particularly effective in resolving large deformation problems associated with geosynthetics, including problems of landfill settlement, reinforced-slope stability, and geocontainer dropping.

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Section: History Of Mpmmentioning

confidence: 99%

Application of material point method in modeling soil-geosynthetics interactions-a literature survey

Liu,

Lin,

Pokharel

2024

IOP Conf. Ser.: Earth Environ. Sci.

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“…Many studies employed finite element methods to simulate the pile installation process using software. Simulations of single-pile installations have achieved promising results, as techniques such as the coupled Eulerian-Lagrangian (CEL) method [16][17][18], the arbitrary Lagrangian-Eulerian (ALE) method [19][20][21], the material point method (MPM) [22][23][24] and the press-replace method (PRM) [25,26] are efficient at addressing grid distortion issues in pile penetration models. However, when multiple piles are present in the penetration model, computational efficiency tends to decrease [27].…”

Section: Introductionmentioning

confidence: 99%

Study on Shielding Effect of the Pile Group in a Soft-Soil Foundation

Lin,

Huang,

Chen

et al. 2023

Applied Sciences

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Pile groups are frequently employed to reinforce soft soil foundations, while the piling process frequently disturbs the adjacent foundation. The shielding effect, which prevents the transmission of disturbances from pile installation, is indispensable for minimizing engineering disturbances and optimizing pile group construction techniques. However, current research focuses predominantly on characterizing the phenomenon of shielding, with a limited exploration of the mechanism. To eliminate the limitation, a numerical investigation of the shielding mechanism of pile groups in a pile–soil system is performed this study. Using the finite difference program FLAC3D and the cavity expansion theory, a three-dimensional numerical model of a pile–soil foundation was created. During the sequential penetration of piles, the response characteristics of the soil surrounding the piles were investigated. Displacement field was first investigated to determine the presence of shielding effects in the pile group and then highlighted the effective role of the existing piles in controlling deformation. Furthermore, through a combined analysis of the stress and strain fields during piling, the mechanism of the shielding effect induced by pile construction is proposed, which is attributed to the direct obstruction effect of piles and the “soil arching effect” created by the soil between piles. The former is reflected by the direct barrier of the existing pile to the soil displacement induced via the installation of the new piles. The latter is reflected by the obstruction of soil between two existing piles to the displacement of soil passing through the two existing piles. This research provides a comprehensive understanding of the mechanical behavior of the pile–soil system and has practical implications for controlling disturbances and optimizing construction techniques in piling engineering projects.

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“…Pile rebound leads to the release of the soil stress around the pile, which causes a significant reduction in the pile sides' friction resistance [15]. As we all know, the loosening of soil is a benefit to the installation of piles, while the densification of soil is detrimental to the installation of piles, but the tendency for the densification of soil is an advantage to the ultimate capacity of the piles during their installation [16][17][18][19][20][21]. In addition, the relationship between pile rebound and pile length is linear, and the ratio between pile rebound and pile length is constant [6,14].…”

Section: Introductionmentioning

confidence: 99%

The Effects and Vertical Bearing Capacity of Two Jacked Model Piles in Sand

et al. 2022

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The effects and vertical bearing capacity of two jacked piles in sand are still not well understood, and the mechanism of the adjacent pile’s uplift caused by the jacking pile in a double pile system is especially unclear, but these facets are important to the stability of the jacked pile. In this paper, a series of tests is performed on jacked model piles in sand, where in the influences of the pile length and the driving pile’s speed on the effects and vertical bearing capacity of two jacked piles were studied. The results revealed that the effects and vertical bearing capacity of the two jacked piles were mainly in relation to pile length and influenced by the driving speed. The horizontal displacement of the top of the first jacking pile during the installation of the post-jacking pile was caused by the difference in the stress state of the first jacking pile between the side of the pile’s face and its back side, in which the uplift displacement of the first jacking pile was also involved. The radial stress of the pile increased nonlinearly with the depth under different pile lengths and gradually converged to the passive earth pressure. The ultimate capacity of the double pile is approximately twice that of a single pile, and the ratio of the ultimate capacity of a single pile to the final jacking pressure was approximately 1.04.

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Numerical simulation of installation of jacked piles in sand using material point method

Cited by 29 publications

References 38 publications

Application of material point method in modeling soil-geosynthetics interactions-a literature survey

Application of material point method in modeling soil-geosynthetics interactions-a literature survey

Study on Shielding Effect of the Pile Group in a Soft-Soil Foundation

The Effects and Vertical Bearing Capacity of Two Jacked Model Piles in Sand

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