Vertical dynamic impedance of a sand-filled nodular pile in saturated soil

Le, Yi; Wang, Ning; Hu, Wentao; Geng, Daxin; Cai, Yanyan; Peng, Yuehui

doi:10.1016/j.oceaneng.2022.112075

Cited by 6 publications

(2 citation statements)

References 29 publications

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“…Meanwhile, studies evaluating the IFs of structures resting on pile foundations significantly numerically and experimentally have increased. These studies have been conducted to predict the response of the pile-structure exposed to seismic excitations and harmonic loadings for a wide range of structures and frequencies [30][31][32][33][34][35][36][37][38][39][40][41][42].…”

Section: Introductionmentioning

confidence: 99%

Model Tests on Determining the Effect of Various Geometrical Aspects on Horizontal Impedance Function of Surface Footings

Maleki

Jafarzadeh

2023

Scientia Iranica

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Problems associated with soil-structure interaction have been determined and the Impendence Functions evaluated. The aim of this paper is studying horizontal impedance function for surface footings by physical model tests. For this purpose, a cubic steel container was used as a testing environment for two different conditions, a rigid base, and a homogeneous half-space model. The effect of various parameters such as footing shape, embedment ratio, inertia, and dynamic force amplitude was studied in three shapes; rectangular, square, and circle footing. The results indicated that the massless impedance function theory was confirmed at the Dimensionless Frequency of less than 2.5. Also, in the rigid base model, soil response heavily depends on the vibration frequency, developed by boundary conditions and side walls, in contrast to the half-space model. The rigid base, distribution and reflection of waves in the soil, and dissipation of higher wave energy substantially influenced the dynamic response of soil-foundation system. Additionally, the embedment ratio significantly affected the impedance functions.

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Section: Introductionmentioning

confidence: 99%

Model Tests on Determining the Effect of Various Geometrical Aspects on Horizontal Impedance Function of Surface Footings

Maleki

Jafarzadeh

2023

Scientia Iranica

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“…Multiple studies have focused on the static [20][21][22][23][24][25] and dynamic 26,27 behaviour of the nodular piles as well as the PGP piles. Since the SFNP foundation was proposed, there have also been some attempts to study its dynamic characteristics 28,29 ; however, the consolidation performance of the proposed composite foundation, which forms an integral part of evaluating its settlement, has not been addressed yet. Therefore, this paper investigates the consolidation rate of the SFNP foundation and develops an analytical solution for its evaluation.…”

Section: Introductionmentioning

confidence: 99%

Analytical solution for consolidation of sand‐filled nodular pile (SFNP) foundation and its engineering application

Sun

Naggar

et al. 2022

Num Anal Meth Geomechanics

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The sand-filled nodular pile (SFNP) foundation is newly proposed to improve the bearing capacity and accelerate consolidation settlement of foundations installed in soft clay soil. By filling sand while driving the nodular pile into the soft clay soil, the SFNP foundation provides an extra drainage path with the aid of the nodular segment, while maintaining the high modulus reinforcement body at the core of the composite foundation. The performance of the SFNP foundation is greatly influenced by its consolidation behaviour. This study develops a generalized model for the SFNP foundation, and a closed-form solution is then established considering the smear and well resistance effects. The developed model and the associated analytical solution are employed to investigate the consolidation rate and load distribution of the SFNP foundation. Finally, the analytical solution is utilized to evaluate the performance of SFNP foundation for an expressway project located in Zhejiang, China. The predicted dissipation of the excess pore water pressure employing the developed analytical solution agreed well with measured response from the field test, which further confirmed the advantages of the SFNP foundation and the reliability of the developed solution.

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Strengthening mechanism of plum blossom pile composite foundation

Li,

Deng

2024

Acta Geotech.

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Vertical dynamic impedance of a sand-filled nodular pile in saturated soil

Cited by 6 publications

References 29 publications

Model Tests on Determining the Effect of Various Geometrical Aspects on Horizontal Impedance Function of Surface Footings

Model Tests on Determining the Effect of Various Geometrical Aspects on Horizontal Impedance Function of Surface Footings

Analytical solution for consolidation of sand‐filled nodular pile (SFNP) foundation and its engineering application

Strengthening mechanism of plum blossom pile composite foundation

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