New method to calculate the kinematic response of offshore pipe piles under seismic S-waves

Chen, Libo; Li, Jiaxuan; Yang, Zijian; Líu, Hao; Yao, Yao; Zhang, Peng

doi:10.1016/j.soildyn.2022.107651

Cited by 17 publications

(5 citation statements)

References 49 publications

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“…For instance, Yang et al 22 developed an analytical model for the SHwave caused response of piles taking into account the superstructure impact. Chen et al 23,24 proposed a mathematical method for the vibration analysis of offshore pipe piles under seismic S-waves. Furthermore, Bozyigit, 25 Álamo et al, 26 and Fernández-Escobar et al 27 also utilized the Timoshenko beam theory to simulate the piles considering different external loads.…”

Section: Introductionmentioning

confidence: 99%

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3D analytical modeling of moving‐loading induced pile‐group behavior in stratified cross‐anisotropic poroelastic water‐saturated soils based on two stage theory

Yang,

Jia

2024

Num Anal Meth Geomechanics

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The aim of this paper is to propose a two‐stage theory‐based analytical method for the dynamic performance of pile groups in layered poroelastic saturated cross‐anisotropic soils induced by moving loadings. Among them, the free‐field vibrational analysis of saturated soils is performed by the analytical element‐layer approach (ALEA) and Fourier transformation. Based on the free‐field response, the boundary element (BE) solution for the soil resistance at the soil‐pile interface is derived utilizing the two‐stage theory. Simultaneously, the finite element (FE) solutions for the pile shaft resistance and deformation of pile groups are derived based on the Timoshenko beam theory. Finally, the FE‐BE coupled dynamic equation for deformations and internal loadings of the soil‐pile system is obtained. Thereafter, the reliability of the proposed method is validated by comparing with existing solutions and FE data from ABAQUS. Based on the derived solutions, a comprehensive parametric study is performed to examine the effects of loading amplitude, force speed, soft soil‐layer stiffness, soil anisotropy, and pile length on the dynamic responses of pile groups.

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Section: Introductionmentioning

confidence: 99%

“…developed an analytical model for the SH‐wave caused response of piles taking into account the superstructure impact. Chen et al 23,24 . proposed a mathematical method for the vibration analysis of offshore pipe piles under seismic S‐waves.…”

Section: Introductionmentioning

confidence: 99%

3D analytical modeling of moving‐loading induced pile‐group behavior in stratified cross‐anisotropic poroelastic water‐saturated soils based on two stage theory

Yang,

Jia

2024

Num Anal Meth Geomechanics

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“…Meanwhile, Zhang et al [36] derived a calculation formula for the lateral vibration characteristic of the helical pile by the equivalent stiffness method, and once again demonstrated that the changes in the pile parameters of the helical pile have a significant influence on its lateral vibration characteristics. Therefore, the lateral bearing behavior of the helical pile is also worth further research, especially the dynamic problems of helical piles widely used in wind power foundations, transportation foundations, and other engineering projects [37][38][39][40][41]. However, most of the existing research on the dynamic response of the helical pile and the dynamic interaction theory between helical pile and soil is based on the Euler beam model, and the breadth and depth of research are still insufficient.…”

Section: Introductionmentioning

confidence: 99%

Lateral Dynamic Response of Helical Pile in Viscoelastic Foundation Considering Shear Deformation

Yang,

Wang,

Cao

et al. 2023

Applied Sciences

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Helical piles are a new type of pile that has good application prospects, and researchers have carried out an in-depth investigation into their vertical uplift and compressive bearing capacity. However, there is relatively little research on the dynamic bearing characteristics of helical piles. Therefore, the lateral vibration of a helical pile embedded in the viscoelastic foundation is systematically studied in this article. Utilizing the equivalent stiffness method to transform a helical pile into a cylindrical pile of special diameter, the lateral vibration model of the helical pile considering shear deformation is established based on the Winkler foundation model and the Timoshenko beam theory. The analytical solutions for the lateral dynamic displacement, bending moment, and shear force of the helical pile are strictly derived, and the rationality of the present solutions is also verified by comparing them with existing solutions. Based on the present solutions, a parametric study is carried out to investigate the influence of the pile and soil properties on the lateral dynamic response of the helical pile. It is found that the load excitation frequency and pile–soil stiffness ratio have a significant influence on the lateral dynamic displacement, bending moment, and shear force of the helical pile with space and time response.

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“…44,45 Subsequently, some other researchers have also studied the lateral dynamic response of piles in saturated soil in the framework of Biot's theory. [46][47][48][49][50][51] We are presenting a novel closed-form formulation for describing the lateral dynamic response of floating piles in a saturated soil layer in this paper. Expression for the lateral resistance of surrounding saturated soil is obtained by solving the Biot's governing equations.…”

Section: Introductionmentioning

confidence: 99%

“…One of the earliest studies on the topic of lateral dynamic response of piles in saturated soil is the work of Jin et al., 43 who extended Muki and Sternberg's model to the case of poroelastic half‐space based on Biot's poroelasticity theory 44,45 . Subsequently, some other researchers have also studied the lateral dynamic response of piles in saturated soil in the framework of Biot's theory 46–51 …”

Section: Introductionmentioning

confidence: 99%

Lateral dynamic response of single floating piles in saturated soil layer

Zheng

Ding

2023

Num Anal Meth Geomechanics

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A closed‐form formulation for the dynamic analysis of lateral response of floating piles in a saturated finite‐thickness soil layer is presented in this paper. Governing equations of the saturated soil are established on the basis of Biot's poroelastic theory, solution to which results in the lateral resistance of surrounding saturated soil to pile deflection. Closed‐form expressions of the lateral deformations of pile along depth and the dynamic compliances at pile head are obtained by solving a system of linear equations from the boundary and continuity conditions, instead of solving sophisticated integral equations in existing boundary integral methods. The parametric study focuses on exploring the sensitivity of pile compliances and deformations to the main problem parameters, including pile‐soil modulus ratio and soil permeability.

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New method to calculate the kinematic response of offshore pipe piles under seismic S-waves

Cited by 17 publications

References 49 publications

3D analytical modeling of moving‐loading induced pile‐group behavior in stratified cross‐anisotropic poroelastic water‐saturated soils based on two stage theory

3D analytical modeling of moving‐loading induced pile‐group behavior in stratified cross‐anisotropic poroelastic water‐saturated soils based on two stage theory

Lateral Dynamic Response of Helical Pile in Viscoelastic Foundation Considering Shear Deformation

Lateral dynamic response of single floating piles in saturated soil layer

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