Vertical vibration of a pile embedded in radially disturbed viscoelastic soil considering the three-dimensional nature of soil

Dai, Denghui; Naggar, M. Hesham El; Zhang, Ning; Gao, Yufeng; Li, Zhen‐Ya

doi:10.1016/j.compgeo.2019.03.013

Cited by 35 publications

(4 citation statements)

References 28 publications

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“…The transmission of dynamic loads in an elastic half-space is the theoretical basis for studying specific problems such as pile vibration. This topic has received much attention and stimulated research efforts, which have resulted in beneficial findings [7][8][9][10][11][12]. From the perspective of the saturated porous media theory, some researchers have studied the vibration of piles in saturated soil and investigated the important influence of the liquid phase of the soil layer on pile vibration [4,13,14].…”

Section: Introductionmentioning

confidence: 99%

“…In the published studies, the piles were treated as a one-dimensional elastic rods [3,15] or beams [6,[16][17][18]. The Biot's elastic model [19,20] and poroelastic model [21][22][23], as well as the viscoelastic model [11,[24][25][26] were adopted to simulate the saturated soil around a pile. The influences of the parameters of the saturated soil, the dimensions of the pile, and the Poisson's ratio of the pile vibration were further analyzed [6,[19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

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Semi-Analytical Solution for the Vertical Vibration of a Single Pile Embedded in a Frozen Poroelastic Half-Space

Chen

Wang

et al. 2023

Applied Sciences

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The theory of vertical pile vibration is the essential basis for pile integrity determination and dynamic analysis. The pile vibration characteristics are inevitably affected when the surrounding soil is frozen due to the low environmental temperature. Therefore, the investigation of pile vibration considering the surrounding soil as a saturated frozen porous medium is of great importance. In this paper, an analytical model for vertical pile vibration was established by employing the theory of composite saturated porous media, that is, by simplifying the upper frozen soil layer as a homogeneous isotropic saturated frozen porous medium and the foundation soil beneath the pile as an elastic half-space subjected to the motion of a rigid disk. By employing the integral transform and variable separation method, analytical solutions for the proposed model were derived under the three-dimensional axisymmetric condition. The analytical model and its solutions were verified by comparing them with the existing solutions for an end-bearing pile embedded in a homogeneously frozen soil layer as well as for a saturated half-space. A parametric study was conducted by utilizing the proposed solutions, and the results indicated that the pile bottom stiffness, the freezing temperature, the shear modulus of the unfrozen soil, etc., had a significant influence on the dynamic responses of the vertical pile vibration in both the frequency and the time domains.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Semi-Analytical Solution for the Vertical Vibration of a Single Pile Embedded in a Frozen Poroelastic Half-Space

Chen

Wang

et al. 2023

Applied Sciences

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“…In this paper the Finite Element Method (FEM) is employed, however, some authors have analytically addressed the soil-structure interaction problem under vibration, e.g. Ahmadi and Eskandari [1], Dai et al [2], Zhang and Pan [3], etc.…”

Section: Introductionmentioning

confidence: 99%

Mitigation of train-induced vibrations on nearby high-rise buildings by open or geofoam-filled trenches

Kontoni¹,

Farghaly²

2020

J. vibroeng.

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The vibrations induced by moving trains especially in close distances with high-rise buildings can be destructive. The high technology of wilding rails induced a high train velocity which is associated with high vibrations. The buildings near the railways suffer from the train-induced vibrations. In this paper, a 3D FEM model was constructed to study the train-induced vibrations on a nearby high-rise building (HRB), show its response and investigate the most suitable technique to mitigate the effect of the train-induced vibrations by an open trench or a geofoam-filled trench. Three trench parameters were investigated to enhance the mitigation performance, the distance from the trench to the HRB, the trench depth and the use of either open (empty) trench or geofoam-filled trench. The geofoam-filled trench technique improved the dynamic response of the structure. Thus, trenches filled with geofoam can be considered a protection technique for high-rise buildings constructed near moving trains.

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“…On this basis, Wang et al [21] and Yang et al [22] identified the limitations of EI Naggar's model and proposed a new approach for the longitudinal vibration of piles in hysteretic-damping soil, which considers a completely coupled condition at the sub-layer interface by adopting the complex stiffness method. In addition, Dai et al [23] further examined the longitudinal impedance of piles in radially inhomogeneous soil with a hysteretic-type damping model, considering the three-dimensional (3D) wave propagation in soil.…”

Section: Introductionmentioning

confidence: 99%

An Analytical Solution for Longitudinal Impedance of a Large-Diameter Floating Pile in Soil with Radial Heterogeneity and Viscous-Type Damping

et al. 2020

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An analytical model is presented for solving the longitudinal complex impedance of a large-diameter floating pile in viscoelastic surrounding soil with radial heterogeneity and viscous-type damping, taking the effect of three-dimensional wave propagation of soil and lateral inertia of the pile shaft into account. The corresponding analytical solution for longitudinal impedance is also derived and validated via comparisons with existing solutions. The influences of the pile length, Poisson’s ratio of the pile shaft and the viscous damping coefficient, as well as the degree and radius of disturbed surrounding soil, on the longitudinal impedance of the pile shaft are examined by performing parametric analyses. It is demonstrated that the proposed analytical model and solution are suitable for the longitudinal vibration problem of a large-diameter pile and radially inhomogeneous surrounding soil, especially when the pile slenderness is low. In addition, the present solution can be easily degenerated to describe the longitudinal vibration problem relating to a large-diameter floating pile in radially homogenous soil or a pile with fixed-end supports.

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Vertical vibration of a pile embedded in radially disturbed viscoelastic soil considering the three-dimensional nature of soil

Cited by 35 publications

References 28 publications

Semi-Analytical Solution for the Vertical Vibration of a Single Pile Embedded in a Frozen Poroelastic Half-Space

Semi-Analytical Solution for the Vertical Vibration of a Single Pile Embedded in a Frozen Poroelastic Half-Space

Mitigation of train-induced vibrations on nearby high-rise buildings by open or geofoam-filled trenches

An Analytical Solution for Longitudinal Impedance of a Large-Diameter Floating Pile in Soil with Radial Heterogeneity and Viscous-Type Damping

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