Impact of Pile Punching on Adjacent Piles: Insights from a 3D Coupled SPH-FEM Analysis

TY – JOUR

T1 – Impact of Pile Punching on Adjacent Piles

T2 – Insights from a 3D Coupled SPH-FEM Analysis

AU – Jayasinghe, Laddu Bhagya

AU – Waldmann, Daniele

AU – Shang, Junlong

N1 – Publisher Copyright:
© 2020 by the authors.

PY – 2020/5

Y1 – 2020/5

N2 – Pile punching (or driving) affects the surrounding area where piles and adjacent piles can be displaced out of their original positions, due to horizontal loads, thereby leading to hazardous outcomes. This paper presents a three-dimensional (3D) coupled Smoothed Particle Hydrodynamics and Finite Element Method (SPH-FEM) model, which was established to investigate pile punching and its impact on adjacent piles subjected to lateral loads. This approach handles the large distortions by avoiding mesh tangling and remeshing, contributing greatly high computational efficiency. The SPH-FEM model was validated against field measurements. The results of this study indicated that the soil type in which piles were embedded affected the interaction between piles during the pile punching. A comprehensive parametric study was carried out to evaluate the impact of soil properties on the displacement of piles due to the punching of an adjacent pile. It was found that the interaction between piles was comparatively weak when the piles were driven in stiff clays; while the pile-soil interactions were much more significant in sandy soils and soft clays.

AB – Pile punching (or driving) affects the surrounding area where piles and adjacent piles can be displaced out of their original positions, due to horizontal loads, thereby leading to hazardous outcomes. This paper presents a three-dimensional (3D) coupled Smoothed Particle Hydrodynamics and Finite Element Method (SPH-FEM) model, which was established to investigate pile punching and its impact on adjacent piles subjected to lateral loads. This approach handles the large distortions by avoiding mesh tangling and remeshing, contributing greatly high computational efficiency. The SPH-FEM model was validated against field measurements. The results of this study indicated that the soil type in which piles were embedded affected the interaction between piles during the pile punching. A comprehensive parametric study was carried out to evaluate the impact of soil properties on the displacement of piles due to the punching of an adjacent pile. It was found that the interaction between piles was comparatively weak when the piles were driven in stiff clays; while the pile-soil interactions were much more significant in sandy soils and soft clays.

KW – field measurement

KW – finite element method

KW – lateral displacement

KW – pile punching

KW – smoothed particle hydrodynamics

UR – www.scopus.com/inward/record.url?scp=85102396688&partnerID=8YFLogxK

U2 – 10.3390/applmech1010004

DO – 10.3390/applmech1010004

M3 – Article

AN – SCOPUS:85102396688

SN – 2673-3161

VL – 1

SP – 47

EP – 58

JO – Applied Mechanics

JF – Applied Mechanics

IS – 1

ER –

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