Simplified numerical modelling of pile penetration - the press-replace technique

Engin, H. K.; Brinkgreve, R.B.J.; Tol, A.F. van

doi:10.1002/nag.2376

Cited by 25 publications

(4 citation statements)

References 34 publications

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“…Unfortunately, many of the commercially available FEM-based geotechnical engineering software uses a small-strain formulation, which may not be suitable for this case (i.e., modeling of inclusion installation with semi-displacement/displacement method) which, in essence, is a large-strain problem. Indeed, certain modeling technique for simulating a pile penetration with FEM is known, such as the use of press-replace method [10], however the implementation of this method is not straightforward where the incremental penetration shall be performed iteratively along the predefined interface. In addition to, verifications with inherently large-strain numerical method or particle-based numerical model may be necessary as demonstrated by [11].…”

Section: Analysis Of Soil Heavementioning

confidence: 99%

Heave Analysis of Unreinforced Inclusion Column in Low Sensitivity Soft Clay

Oetomo,

Putra

2023

IOP Conf. Ser.: Earth Environ. Sci.

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The ground improvement technique with inclusions, is now widely available and used in Indonesia. Typically, it uses unreinforced concrete/mortar columns, commonly referred as rigid inclusions, for enhancing the composite ground engineering properties. Using this approach, the applied load will be distributed to both the rigid inclusions and in-situ soft soil. On the surface, this technique is analogue to compression-only cast-in-situ deep foundation element (i.e., bored pile), but with different design concept. Nonetheless, when these inclusions are installed in clay soil, either with displacement or semi-displacement method, the installed inclusions may experience heave (similar like driven pile), which is caused by ground deformation in the vicinity of installed inclusions. As these inclusions are not reinforced, mobilizing upward skin friction from excessive heave may develop into an integrity issue, specifically, when the mobilized upward force is larger than the inclusion tensile capacity. This study shows an observed heave on unreinforced inclusion columns. Retrospective soil heave prediction using shallow strain path method (SSPM), is presented. Proposed recommendations for avoiding such issue are discussed.

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Section: Analysis Of Soil Heavementioning

confidence: 99%

Heave Analysis of Unreinforced Inclusion Column in Low Sensitivity Soft Clay

Oetomo,

Putra

2023

IOP Conf. Ser.: Earth Environ. Sci.

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“…Por ser tratar de um problema que envolve deformações consideráveis na massa de solo, nem todo método numérico disponível é adequado para análise. A exemplo, o método dos elementos finitos (MEF) em sua abordagem Lagrangiana tradicional apresenta limitações no dimensionamento desses elementos devido a distorções da malha de elementos finitos, que resultam em soluções imprecisas ou divergentes (ENGIN; BRINKGREVE; VAN TOL, 2015).…”

Section: Maurício Martines Salesunclassified

“…Todavia, dadas suas limitações, os efeitos de instalação precisam ser considerados de forma indireta ou idealizados. Há diversos trabalhos nesse sentido, que recorrem a abordagens variadas para incorporação dos efeitos de instalação de estacas de deslocamento via MEF (SAID; DE GENNARO; FRANK, 2009; KRASINSKI, 2014; ENGIN; BRINKGREVE; VAN TOL, 2015;SCHMÜDDERICH et al, 2020).…”

Section: Maurício Martines Salesunclassified

Modelagem numérica de uma estaca prensada e concretada in situ instalada em um perfil de solo tropical

Oliveira¹,

SALES²,

Angelim³

et al. 2022

Congresso Brasileiro De Mecânica Dos Solos E Engenharia Geotécnica

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“…Since the problem we are dealing with is a large-strain problem, common finite element methodology with small strain assumption cannot be used (except with some approximations, e.g. press and replace technique by Engin, Brinkgreve, & van Tol (2015) In order to model the penetration of the spudcan into sea-bottom sediments, Coupled Eulerian Lagrangian (CEL) method available in Abaqus software was adopted.…”

Section: Introductionmentioning

confidence: 99%

Three-Dimensional Finite Element Modeling for Spudcan Penetration into a Clayey Seabed

Emren¹,

Huvaj²,

Tuncay³

2017

Geotechnical Frontiers 2017

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pagesThe penetration of the foundation for "jack-up rig" type offshore oil platform (spudcan) into a uniform clayey seabed is studied with three dimensional finite element modeling (Abaqus 6.14) using Coupled Eulerian Lagrangian method. Although there exists some analytical methods (InSafeJIP etc.) for the calculation of the spudcan bearing capacity, they frequently underestimate or overestimate the bearing capacity due to simplifications involved. For the spudcan geometry and soil properties used in this study, based on the 3D FEM analyses, the required penetration depth for a target bearing capacity of spudcans can be reduced by 2 to 4 m. Rate of increase of the bearing capacity with depth is larger in 3D FEM analyses as compared to InSafeJIP method, which may also result in significant savings, however this finding is limited for the spudcan geometry and soil properties used in this study. A systematic parametric study is conducted for the variables that affect the spudcan penetration resistance. These parameters were spudcan diameter (7.5 to 15 m), spudcan cone angle (90 to 150 degrees), roughness of spudcan surface (roughness coefficient of 0 to 1.0), undrained shear strength of clay (20 to 80 kPa), spudcan penetration depths (3 to 20 m), and the spacing between two adjacent spudcans (spacing/diameter ratio of 1.5 to 3.0). Based on these results, spudcan size, cone tip angle etc. can be selected, for each case, to provide required penetration resistance and/or to reduce the required penetration depth. Understanding the relations between the factors and penetration resistance based on this study, may provide a significant step in enhancing the safe and economical design and successful penetration operation of spudcans. However, it should not be forgotten that, the key is to have extensive and correct information and interpretation about the subsoil profile and material properties.

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Simplified numerical modelling of pile penetration - the press-replace technique

Cited by 25 publications

References 34 publications

Heave Analysis of Unreinforced Inclusion Column in Low Sensitivity Soft Clay

Heave Analysis of Unreinforced Inclusion Column in Low Sensitivity Soft Clay

Modelagem numérica de uma estaca prensada e concretada in situ instalada em um perfil de solo tropical

Three-Dimensional Finite Element Modeling for Spudcan Penetration into a Clayey Seabed

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