Dynamic analysis of a laterally loaded pile in a transversely isotropic multilayered half-space

Ai, Zhi Yong; Li, Zhi Xiong

doi:10.1016/j.enganabound.2015.01.008

Cited by 42 publications

(6 citation statements)

References 24 publications

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“…Substituting the potentials into Equation ( 9), the displacements can be obtained as: 28)- (31) into Equations ( 22) and ( 23) yields:…”

Section: Lateral Resistance Of Surrounding Saturated Soil To Pile Def...mentioning

confidence: 99%

“…[25][26][27] Another approach is the Vlasov-Leontiev model, [28][29][30] in which solutions need to be calculated iteratively and thus no explicit expressions are obtained. Some researchers have used Boundary Element Method [31][32][33][34][35][36] and Finite Element Method [37][38][39][40][41][42] to study this problem. Numerical methods are seldom used in engineering practice, since the three-dimensional simulations are usually complex and computationally expensive.…”

Section: Introductionmentioning

confidence: 99%

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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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“…Substituting the potentials into Equation ( 9), the displacements can be obtained as: 28)- (31) into Equations ( 22) and ( 23) yields:…”

Section: Lateral Resistance Of Surrounding Saturated Soil To Pile Def...mentioning

confidence: 99%

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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“…Due to the requirement of lateral load-bearing of pile foundations, the dynamic research of laterally-loaded piles has become a hot issue [6]. Scholars at home and abroad have conducted extensive studies on the dynamic characteristics of single piles under horizontal loads.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Lateral Response of the Partially-Embedded Single Piles in Layered Soil

Han

Gao³

et al. 2022

Applied Sciences

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Scouring can reduce the strength and rigidity of the pile–soil system and become one of the major causes for the failure of the structure of the partially-embedded single pile. The stratification of the soil fields has a significant influence on the internal force and deformation of laterally-loaded piles. A dynamic model of the laterally-loaded single pile in layered soil is established employing Hamilton’s principle based on the modified Vlasov foundation model. Then, the finite difference method is used to obtain the numerical matrix containing the control equations of the single pile to achieve accurate modeling of the soil–structure interaction (SSI) system affected by scouring, so as to solve the natural frequencies of the single pile. Green’s function method obtains the analytical solution of the forced vibration of the single pile. The effects of scouring and the layered soil on the dynamic response of the single pile are studied by numerical calculation and parameter analysis. It is shown that the dynamic model of the partially-embedded single pile in layered soil based on the modified Vlasov foundation model can accurately predict the dynamic characteristics of pile foundation affected by scouring. As the scouring degree intensifies, the first-order natural frequencies of the single pile in layered soil decrease significantly. The subgrade reaction coefficient of each layer of soil in the modified Vlasov foundation model decreases, and the shear coefficient increases. The first-order natural frequencies of the single pile at each scour level increase with the increase in the thickness of the underlying soil. When the elastic modulus of the first layer of soil is increased by one time, the first-order natural frequencies of the single pile are increased by about 20%.

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“…It might include numerous runs and pre-/post-processing for large pile groups, especially with a non-uniform pile distribution (different pile spacings). The boundary element method (BEM) has been also used substantially to model piles and pile groups (Ai and Feng 2014;Ai and Li 2015;Ai et al 2016;Banerjee and Driscoll 1976;Mamoon et al 1990;Padron et al 2007;Sen et al 1985;Xu and Poulos 2000). Some recent significant contributions in the application of BEM have been introduced by Ai and Feng (2014), Ai and Li (2015), and Ai et al (2016).…”

Section: Introductionmentioning

confidence: 99%

“…The boundary element method (BEM) has been also used substantially to model piles and pile groups (Ai and Feng 2014;Ai and Li 2015;Ai et al 2016;Banerjee and Driscoll 1976;Mamoon et al 1990;Padron et al 2007;Sen et al 1985;Xu and Poulos 2000). Some recent significant contributions in the application of BEM have been introduced by Ai and Feng (2014), Ai and Li (2015), and Ai et al (2016). The researchers analyzed laterally loaded pile groups placed in transversely isotropic soils by applying the boundary element method considering pile-soil-pile interaction, and also presented a framework of FEM-BEM coupling for pile group analysis under dynamic loads.…”

Section: Introductionmentioning

confidence: 99%

Modeling of pile-soil-pile interaction in laterally loaded pile groups embedded in linear elastic soil layers

Isbuga

2020

Arab J Geosci

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This study proposes a new method to obtain the lateral response of pile groups by incorporating the pile group effect in layered soils. When a pile is loaded laterally, it creates a zone of influence in the direction of loading. In a pile group, each pile placed in the influence zone of prior piles is exposed to extra loads due to the load transfers from other piles. This mechanism results in a group effect which causes each pile in the group to have a different deflection curve compared to that of an identical isolated single pile under the same load. This study starts with a mathematical approach to model the interaction of two piles and then extends it to pile groups. The governing differential equation of a pile deflection problem is modified to take the pile-soil-pile interaction into account and solved analytically for each pile while the soil parameters and displacement fields around each pile are obtained numerically using the finite difference method written in Fortran language. The model captures the additional pile deflections induced by the group effects in pile groups and the results match well with the results of the existing methods, especially the finite element method.

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Dynamic analysis of a laterally loaded pile in a transversely isotropic multilayered half-space

Cited by 42 publications

References 24 publications

Lateral dynamic response of single floating piles in saturated soil layer

Lateral dynamic response of single floating piles in saturated soil layer

Dynamic Lateral Response of the Partially-Embedded Single Piles in Layered Soil

Modeling of pile-soil-pile interaction in laterally loaded pile groups embedded in linear elastic soil layers

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