Improved embedded beam elements for the modelling of piles

Engin, H.K.; Brinkgreve, Rbj; Septanika, E.G.

doi:10.1201/noe0415440271.ch69

Cited by 20 publications

(24 citation statements)

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“…The main purpose of the EBE formulation proposed by Turello et al is to explicitly represent the force interactions at the pile surface in order to avoid ill conditioning of the problem, which translates into singular stresses and . From a mechanical standpoint, this is naturally achieved by imposing a compatibility requirement between beam and solid displacements along the interaction surface.…”

Section: Overview Of Embedded Beam Element Formulation With Interactimentioning

confidence: 99%

Three dimensional elasto‐plastic interface for embedded beam elements with interaction surface for the analysis of lateral loading of piles

Turello

Pinto

Sánchez

2016

Num Anal Meth Geomechanics

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Summary This paper presents a numerical formulation for a three dimensional elasto‐plastic interface, which can be coupled with an embedded beam element in order to model its non‐linear interaction with the surrounding solid medium. The formulation is herein implemented for lateral loading of piles but is able to represent soil‐pile interaction phenomena in a general manner for different types of loading conditions or ground movements. The interface is formulated in order to capture localized material plasticity in the soil surrounding the pile within the range of small to moderate lateral displacements. The interface is formulated following two different approaches: (i) in terms of beam degrees of freedoms; and (ii) considering the displacement field of the solid domain. Each of these alternatives has its own advantages and shortcomings, which are discussed in this paper. The paper presents a comparison of the results obtained by means of the present formulation and by other well‐established analysis methods and test results published in the literature. Copyright © 2016 John Wiley & Sons, Ltd.

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Section: Overview Of Embedded Beam Element Formulation With Interactimentioning

confidence: 99%

Three dimensional elasto‐plastic interface for embedded beam elements with interaction surface for the analysis of lateral loading of piles

Turello

Pinto

Sánchez

2016

Num Anal Meth Geomechanics

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“…This concept was originally intended for modeling the axially loaded piles and pile groups. Verifications of this approach were reported for different geotechnical problems: compression pile test [7,8], tension pile test [9], vertically loaded pile group [8,10,11,12] and piled raft [10,12], soil reinforcements [10], rock anchors [11], disconnected piled rafts [13]. However, performances of the EB for modeling of pile groups under lateral loading haven't been fully investigated.…”

Section: Figure 1 Front and Trailing Rows In Pile Group With Shear Zmentioning

confidence: 99%

Model Lateralno Opterećenih Šipova Pomoću ”umetnutih” Grednih Elemenata

Marjanović¹,

Vukićević²,

König³

et al. 2016

Zbornik GFS

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“…In this context, an EBE formulation was proposed by Sadek and Sharour, 11 by coupling beam and solid elements in a 3D framework through restrictions established directly in the discrete problem (ie, at nodal level), which leads to a numerical instability as the solid mesh is further refined. 12 In order to overcome the drawbacks in Sadek and Sharour's approach, Turello et al 13 proposed an improved EBE formulation that explicitly considers the interaction surface between pile and soil. Turello et al 14 also proposed a variational framework for coupling 1D beam elements into 3D solid continua.…”

Section: Introductionmentioning

confidence: 99%

Analysis of lateral loading of pile groups using embedded beam elements with interaction surface

Turello

Pinto

Sánchez

2018

Num Anal Meth Geomechanics

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Summary The numerical simulation of soil‐pile interaction problems, by means of full 3D finite element models, involves a large number of degrees of freedom (DOF) and difficulties during the mesh generation process. In order to reduce the unknowns and simplify and properly analyze such class of geotechnical problems, the so‐called embedded beam elements (EBE) have recently been developed. In a preceding contribution of the authors, an improved EBE formulation, which brings into play the soil‐pile interaction surface, was proposed with the aim to localize material plasticity in the soil surrounding the pile. This embedded beam model couples two different finite elements, each described by distinct kinematics (ie, solid and beam). The coupling is incorporated in the formulation by means of kinematical constrains established over the solid and beam displacement fields on the interaction surface. One of the main advantages of the embedded elements is that the addition of beams structural members immersed within the 3D soil model does not represent a constraint for the solid mesh, which can be adopted independently from the beam mesh. In this paper, the lateral loading of pile groups is studied by means of the proposed EBE approach with elasto‐plastic interfaces. In order to represent a rigid cap, a master node and a special set of kinematical restrictions are incorporated into the formulation. The paper presents results obtained by means of the present formulation compared against other well‐established analysis methods and test results published in the literature, for both elastic and elasto‐plastic cases.

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Improved embedded beam elements for the modelling of piles

Cited by 20 publications

References 0 publications

Three dimensional elasto‐plastic interface for embedded beam elements with interaction surface for the analysis of lateral loading of piles

Three dimensional elasto‐plastic interface for embedded beam elements with interaction surface for the analysis of lateral loading of piles

Model Lateralno Opterećenih Šipova Pomoću ”umetnutih” Grednih Elemenata

Analysis of lateral loading of pile groups using embedded beam elements with interaction surface

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