Settlement evaluation of explosive compaction in saturated sands

Daryaei, Reza; Eslami, Abolfazl

doi:10.1016/j.soildyn.2017.03.015

Cited by 13 publications

(3 citation statements)

References 18 publications

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“…For more information regarding the MMALE, the reader is referred to [28][29][30]. The MMALE application in geotechnical problems is limited, although it is popular in simulation of the soil in other fields such as an underground explosion, where the soil is considered as a medium for transmitting shock waves [31]. A recent study conducted by Bakroon et al [32] assessed the feasibility of MMALE in realistic geotechnical large deformation problems in comparison with classical Lagrangian methods.…”

Section: Numerical Model 21 Description Of the Mmale Methodsmentioning

confidence: 99%

Numerical evaluation of buckling in steel pipe piles during vibratory installation

Bakroon

Daryaei

Aubram

et al. 2019

Soil Dynamics and Earthquake Engineering

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The buckling of steel pipe piles during installation is numerically studied. Generally, numerical simulation of installation processes is challenging due to large soil deformations. However, by using advanced numerical approaches like Multi-Material Arbitrary Lagrangian-Eulerian (MMALE), such difficulties are mitigated. The Mohr-Coulomb and an elastic-perfectly plastic material model is used for the soil and pile respectively. The pile buckling behavior is verified using analytical solutions. Furthermore, the model is validated by an experiment where a pipe pile is driven into sand using vibratory loading. Several case scenarios, including the effects of heterogeneity in the soil and three imperfection modes (ovality, out-of-straightness, flatness) on the pile buckling are investigated. The numerical model agrees well with the experimental measurements. As a conclusion, when buckling starts, the penetration rate of the pile decreases compared to the non-buckled pile since less energy is dedicated to pile penetration given that it is spent mainly on buckling.

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Section: Numerical Model 21 Description Of the Mmale Methodsmentioning

confidence: 99%

Numerical evaluation of buckling in steel pipe piles during vibratory installation

Bakroon

Daryaei

Aubram

et al. 2019

Soil Dynamics and Earthquake Engineering

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“…Coupling between the pile and soil was controlled using penalty function constraints. This method has been validated for geotechnical engineering problems involving large deformations [28,29]. In this model, the soil adopted the MAT_FOAM_AND_SOIL material model in LS-DYNA [14].…”

Section: Simulation Of High-frequency Vibratorymentioning

confidence: 99%

Analysis of Soil Response during High-Frequency Vibratory Steel Pipe Pile Driving in Soft Soil

Chen,

Li,

Zhao

et al. 2024

Advances in Civil Engineering

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High-frequency vibratory pile driving exhibits remarkable efficiency in soft soil, with its impact on the surrounding soil to a limited range. Studying the evolution of stress and strain fields in the soil surrounding the pile during the pile driving process is of great significance for effective control of pile driving construction and accurate prediction of the pile foundation’s bearing capacity after installation. In this study, by means of numerical simulation with consideration of the large deformations of the soil and even discontinuities induced by the pile penetration into soil, the response of the soil during the high-frequency vibratory steel pipe pile driving in silt soil was investigated. The research results show that with the increase of pile driving depth, the stress concentration zones in the soil near the pile tip continuously expanded, and the plastic strain zone mainly developed downward but little horizontally. When the vibration frequency was between 33 and 38 Hz, the pile driving efficiency was higher than that of 50 Hz. High-frequency resonance free vibratory pile driving has smaller pile–soil stresses and plastic strains compared to traditional impacting pile and static pile, and it is less prone to the formation of soil plug. Therefore, high-frequency vibratory pile driving technology exhibits good adaptability in the soft soil.

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“…Most of these methods originate from the field of computational fluid dynamics, such as the Multi-Material Eulerian Arbitrary Lagrangian Eulerian (MMALE) method [5]. This method has been verified and validated for various geotechnical problems involving large deformation [16][17][18] and therefore shows itself as a potential and costeffective evaluation tool for such problems. A recent work done by Daryaei et al [19] investigated the effect of frequency in achieved penetration depth in the vibratory installation of pipe piles.…”

Section: Literature Reviewmentioning

confidence: 99%

Numerical evaluation of the soil behavior during pipe-pile installation using impact and vibratory driving in sand

Daryaei

Bakroon

Aubram

et al. 2020

Soil Dynamics and Earthquake Engineering

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Pipe-piles are installed using impact or vibratory driving which influences the soil in different ways including the void ratio and stress distribution. Such complex problems are hard to investigate on the field as well as using numerical methods. Here, a sophisticated numerical approach is employed to evaluate the soil behavior during pile installation. Also, a sensitivity analysis on the frequency and the impact duration is done for vibratory and impact driving, respectively. The investigation includes the required force of the pile installation, pile penetration behavior, plugging formation inside the pile, and the change of the soil state including the change in the horizontal stress and density around the pile during the installation. Results of the numerical model show several advantages of vibratory driving over impact driving in the dense sand including, reaching the designated depth using less momentum and work as well as more soil compaction.

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Settlement evaluation of explosive compaction in saturated sands

Cited by 13 publications

References 18 publications

Numerical evaluation of buckling in steel pipe piles during vibratory installation

Numerical evaluation of buckling in steel pipe piles during vibratory installation

Analysis of Soil Response during High-Frequency Vibratory Steel Pipe Pile Driving in Soft Soil

Numerical evaluation of the soil behavior during pipe-pile installation using impact and vibratory driving in sand

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