Performance of vertically loaded pile group embedded in layered transversely isotropic saturated viscoelastic soils

The flexibility matrices of layered transversely isotropic saturated viscoelastic soils are obtained by the extended precise integration method. The time-dependent solution to vertically loaded single pile in the soils is achieved through the coupling of finite element method (FEM) and boundary elem...

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Bibliographic Details
Published inEngineering analysis with boundary elements Vol. 110; pp. 112 - 123
Main Authors Ai, Zhi Yong, Gui, Jun Chao, Cheng, Yi Chong
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.01.2020
Subjects
Layered saturated soils
Pile group
Time-dependent solution
Transversely isotropic
Vertical load
Viscoelastic
Time-dependent solution
Transversely isotropic
Pile group
Vertical load
Layered saturated soils
Viscoelastic
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Summary:The flexibility matrices of layered transversely isotropic saturated viscoelastic soils are obtained by the extended precise integration method. The time-dependent solution to vertically loaded single pile in the soils is achieved through the coupling of finite element method (FEM) and boundary element method (BEM). The interactions among piles, as well as the compatibility condition of rigid cap on pile group, are considered to get the solution to the vertically loaded pile group in the soils. Several numerical examples are then presented to study the influences of soil and pile group properties, including viscoelasticity, transverse isotropy and stratification of soil, as well as length-diameter ratio and pile spacing. Finally, parametric analyses are performed to give the changing trend of displacement at the cap and the axial force of pile tops over time.
ISSN:0955-7997
1873-197X
DOI:10.1016/j.enganabound.2019.10.010