Propagation of pile tip damage during installation

Kee, N; Aldridge, T; Carrington, T.

doi:10.1201/noe0415390637.ch94

Cited by 7 publications

(8 citation statements)

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“…This can be attributed to the induced elastic strains in the pile which after further penetration the pile springs back elastically. The possibility of the occurrence of this behavior has also been reported by Aldridge et al [4]. As a result, it can be argued that the driving energy for the pile installation is reflected in the model mainly in three different forms, lateral and horizontal displacement, and pile buckling.…”

Section: Resultssupporting

confidence: 65%

“…In addition, each model exhibits a different buckling mode due to the different initial imperfection. Also, it is observed that the cross sections of the imperfect piles tend to take the forms similar to the so-called "peanut-shape" as reported in the literature [4,7].…”

Section: Resultssupporting

confidence: 56%

“…Local buckling which is often encountered at the pile tip may cause increased driving resistance, pile deviation from its longitudinal axis which in turn decrease its bearing capacity, and changed pile response to lateral loads due to change in section modulus. By further penetration, the pile may collapse [4]. Also, Chajes [5] reported that a small initial imperfection in a column results in less load-carrying capacity than Euler load.…”

Section: Motivationmentioning

confidence: 99%

“…Young et al [9] listed a comprehensive database of different structural shapes under various loading conditions including cylindrical shells. In another study, Aldridge et al [4] compared the soil and pile stiffness to consider soil-structure interaction, and concluded that in order to have progressive buckling, the soil must be stiffer than the pile. Otherwise the pile deformation will spring back elastically.…”

mentioning

confidence: 99%

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Numerical evaluation of buckling in steel pipe piles during vibratory installation

Bakroon

Daryaei

Aubram

et al. 2019

Soil Dynamics and Earthquake Engineering

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The buckling of steel pipe piles during installation is numerically studied. Generally, numerical simulation of installation processes is challenging due to large soil deformations. However, by using advanced numerical approaches like Multi-Material Arbitrary Lagrangian-Eulerian (MMALE), such difficulties are mitigated. The Mohr-Coulomb and an elastic-perfectly plastic material model is used for the soil and pile respectively. The pile buckling behavior is verified using analytical solutions. Furthermore, the model is validated by an experiment where a pipe pile is driven into sand using vibratory loading. Several case scenarios, including the effects of heterogeneity in the soil and three imperfection modes (ovality, out-of-straightness, flatness) on the pile buckling are investigated. The numerical model agrees well with the experimental measurements. As a conclusion, when buckling starts, the penetration rate of the pile decreases compared to the non-buckled pile since less energy is dedicated to pile penetration given that it is spent mainly on buckling.

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Section: Resultssupporting

confidence: 65%

Section: Resultssupporting

confidence: 56%

Section: Motivationmentioning

confidence: 99%

mentioning

confidence: 99%

See 2 more Smart Citations

Numerical evaluation of buckling in steel pipe piles during vibratory installation

Bakroon

Daryaei

Aubram

et al. 2019

Soil Dynamics and Earthquake Engineering

View full text Add to dashboard Cite

show abstract

“…(2) although this does not seem consistent with Equation (1) and the adoption of √ . Aldridge et al (2005) assessed the horizontal and near-axial (1H:4V) loads to cause a local tip buckle using upper bound theory for a plastic hinge mechanism. They found a horizontal force 17% higher than in HSE (2001) (coefficient of 1.4 instead of 1.2 in Equation ( 1)) and double the resultant force for the near-axial case (coefficient of 2.8).…”

Section: Pile Denting Forcementioning

confidence: 99%

Numerical assessment of tip damage during pile installation in boulder-rich soils

et al. 2024

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The number of incidents worldwide where pile tip damage has occurred during driving has accelerated following the growth of the offshore wind sector, and the expansion into areas with increased risk of embedded boulders or partially weathered soft rocks. The process involving pile-boulder-soil contact can be simulated with advanced 3D large-deformation dynamic coupled Eulerian-Lagrangian (CEL) finite element analysis. However, analyses of this nature are highly time-consuming and computationally expensive. The objective of the paper is to develop a generic framework whereby the potential for denting by a boulder can be assessed a priori. The study encompasses four main components to determine the magnitude of force necessary to create plastic damage of the pile tip and what combination of boulders and soil might generate such reactions during pile installation: (a) a parametric 3D FE structural denting study; (b) a parametric boulder-soil 3D CEL study, where prescribed displacements were applied to the surface of boulders embedded in sand; (c) a range of pile-boulder-soil 3D CEL analyses where a deformable pile and different boulder-soil combinations were simulated; and (d) centrifuge model tests involving tip damage from boulders. Simple relationships and charts have been established from the numerical studies and validated from experimental work.

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Intermediate Offshore Foundations

Kay¹,

Gourvenec²,

Palix³

et al. 2021

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Propagation of pile tip damage during installation

Cited by 7 publications

References 0 publications

Numerical evaluation of buckling in steel pipe piles during vibratory installation

Numerical evaluation of buckling in steel pipe piles during vibratory installation

Numerical assessment of tip damage during pile installation in boulder-rich soils

Intermediate Offshore Foundations

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