Time-settlement behaviour of piled raft foundations using infinite elements

Small, J. C.; Liu, Hana L.S.

doi:10.1016/j.compgeo.2007.04.004

Cited by 38 publications

(3 citation statements)

References 13 publications

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“…Feng et al developed a method to calculate the post‐construction settlement of a bridge pile foundation using Mesri creep model. Feng et al developed a nonlinear method based on modified Burger model for the prediction of creep settlement of pile groups in layered soil. Li et al investigated the time‐dependent settlement of single piles using wave equation analysis program based on traveling wave decomposition.…”

Section: Introductionmentioning

confidence: 99%

“…Several analytical, numerical, and experimental studies have been made on the immediate settlement of single piles and pile groups that are capable of predicting immediate settlements with good accuracy. However, studies on time‐dependent settlements have been limited owing to its complexity and the assumption that it accounts for only an insignificant proportion of the total settlement. It is however essential to investigate the long‐term settlement for structures such as railway and highway bridges, nuclear power plants, and other important structures because excessive settlements may create severe safety issues.…”

Section: Introductionmentioning

confidence: 99%

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Analysis of creep settlement of pile groups in linear viscoelastic soil

Mishra

Patra

2019

Num Anal Meth Geomechanics

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Summary This paper presents the analysis of creep settlement of pile groups for line pile groups, square pile groups, and rectangular pile groups undergoing creep settlements over a period of time. The soil is treated as a viscoelastic material and is modeled using a three‐parameter viscoelastic model. The damping component (dashpot) takes care of the permanent time‐dependent deformations in three‐parameter viscoelastic model. An approach suggested by Mindlin has been employed to calculate the stress distribution along the pile length in a group. The viscoelastic problem is converted into an elastic problem by the application of Laplace transform. Results in the form of variation of interaction factors for parameters such as pile length to diameter ratio, pile spacing, Poisson's ratio, and modulus ratio have been presented. Comparison has been made between interaction factors for piles groups undergoing immediate settlements and creep settlements. Finally, a typical predictive example has been presented for a 3 × 3 pile group showing creep settlement. The load rearrangement due to creep settlements causes about 5% to 35% increase in base resistance over time. Interaction factors for pile groups (2 × 1, 3 × 1, 2 × 2, and 3 × 2) undergoing creep settlement is about 15% to 55% higher than the interaction factors considering only the immediate settlements for pile group spacing less than or equal to 5d.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Analysis of creep settlement of pile groups in linear viscoelastic soil

Mishra

Patra

2019

Num Anal Meth Geomechanics

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“…Bajad & Sahu (2008) apresentaram os resultados de um estudo experimental (1g) concluindo que a distribuição da carga e o recalque são os parâmetros mais influenciados pelo comprimento das estacas e que algumas metodologias, como a de Poulos & Davis (1980), permitem avaliar a relação entre o número de estacas e o recalque médio, fornecendo um método rápido de avaliação do projeto. Small & Liu (2008) apresentaram um estudo numérico (Elementos Finitos) incluindo o adensamento na análise, o solo como material elástico e elementos de adensamento infinito nas bordas. Lee et al (2010) apresentaram um modelado tridimensional em ABAQUS do comportamento de sistemas radier estaqueado submetidos a carga vertical, em argilas moles.…”

Section: -Grupos De Estacas E Sistemas Radier Estaqueado Em Solos Moles Com Adensamentounclassified