Effect of soil deformability on the failure mechanism of shallow plate or screw anchors in sand

Benjamin Cerfontaine; Jonathan Knappett; Michael Brown; Aaron S. Bradsaw

doi:10.1016/j.compgeo.2019.01.007

Effect of soil deformability on the failure mechanism of shallow plate or screw anchors in sand

Benjamin Cerfontaine (Lead / Corresponding author), Jonathan Knappett, Michael Brown, Aaron S. Bradsaw

Civil Engineering

Research output: Contribution to journal › Article

4 Citations (Scopus)

70 Downloads (Pure)

Abstract

Most analytical approaches for the design of shallow plate and screw anchors in tension are based on the limit equilibrium of a rigid soil wedge for which a horizontal stress distribution acting on the failure plane is assumed. Finite element analysis for a wide range of soil properties was carried out to identify the shape of the failure mechanism and to study the stress distribution at failure. Results show that soil deformation modifies the stress field around the anchor and increases the uplift capacity. A semi-analytical approach is proposed to describe this stress distribution, based on peak friction angle.

Original language	English
Pages (from-to)	34-45
Number of pages	12
Journal	Computers and Geotechnics
Volume	109
Early online date	24 Jan 2019
DOIs	https://doi.org/10.1016/j.compgeo.2019.01.007
Publication status	Published - May 2019

Keywords

Anchors
Design
Failure mechanism
Finite element analysis
Sand

Access to Document

10.1016/j.compgeo.2019.01.007

Author Accepted ManuscriptAccepted author manuscript, 2.63 MBLicence: CC BY-NC-ND

Link to publication in Scopus

Fingerprint Dive into the research topics of 'Effect of soil deformability on the failure mechanism of shallow plate or screw anchors in sand'. Together they form a unique fingerprint.

Projects

1 Finished

Development of Screw Anchors for Floating Marine Renewable Energy Systems Arrays Incorporating Anchor Sharing (SAFS) (Joint with University of Liege)

Brown, M., Cerfontaine, B. & Knappett, J.

COMMISSION OF THE EUROPEAN COMMUNITIES

1/08/17 → 31/07/19

Project: Research

Research Output

4 Citations
6 Conference contribution
3 Article
2 Paper

A Finite Element approach for determining the full load-displacement relationship of axially-loaded shallow screw anchors, incorporating installation effects

Cerfontaine, B., Knappett, J., Brown, M., Davidson, C., Al-Baghdadi, T., Sharif, Y., Brennan, A., Augarde, C., Coombs, W. M., Wang, L., Blake, A., Richards, D. J. & Ball, J. D., 30 Jun 2020, In : Canadian Geotechnical Journal.

Research output: Contribution to journal › Article

Open Access

File

27 Downloads (Pure)

Optimisation of screw anchor lateral capacity in sand for offshore renewable energy applications

Cerfontaine, B., Brown, M., Knappett, J., Davidson, C. & Sharif, Y., Sep 2020, Proceedings of the 4th International Symposium on Frontiers in Offshore Geotechnics. Deep Foundations Institute, 3451

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Open Access

File

Optimised design of screw anchors in tension in sand for renewable energy applications

Cerfontaine, B., Knappett, J., Brown, M. J., Davidson, C. & Sharif, Y., 10 Oct 2020, In : Ocean Engineering. 217, 15 p., 108010.

Research output: Contribution to journal › Article

Activities

1 Membership of committee
1 Keynote

Keynote lecture First International Workshop on Future Application of Screw Piles (IWFASP 2019) At: IIT Bhubaneshwar, India

Michael Brown (Keynote speaker)

7 Dec 2019

Activity: Talk or presentation types › Keynote

File

1st International Symposium on Screw Piles for Energy Applications (Event)

Michael Brown (Chair)

Dec 2018 → 28 May 2019

Activity: Membership types › Membership of committee

Press / Media

Heerema developing Silent Foundation Concepts Technology in coordination with the University of Dundee

Michael Brown

30/06/20

1 item of Media coverage

Press/Media: Research

Profiles

Brown, Michael

m.j.z.brown@dundee.ac.uk

Civil Engineering - Reader

Person: Academic

Cite this

Cerfontaine, B., Knappett, J., Brown, M., & Bradsaw, A. S. (2019). Effect of soil deformability on the failure mechanism of shallow plate or screw anchors in sand. Computers and Geotechnics, 109, 34-45. https://doi.org/10.1016/j.compgeo.2019.01.007

@article{4dc14543a74b441ea15e7684b8bf94bb,

title = "Effect of soil deformability on the failure mechanism of shallow plate or screw anchors in sand",

abstract = "Most analytical approaches for the design of shallow plate and screw anchors in tension are based on the limit equilibrium of a rigid soil wedge for which a horizontal stress distribution acting on the failure plane is assumed. Finite element analysis for a wide range of soil properties was carried out to identify the shape of the failure mechanism and to study the stress distribution at failure. Results show that soil deformation modifies the stress field around the anchor and increases the uplift capacity. A semi-analytical approach is proposed to describe this stress distribution, based on peak friction angle.",

keywords = "Anchors, Design, Failure mechanism, Finite element analysis, Sand",

author = "Benjamin Cerfontaine and Jonathan Knappett and Michael Brown and Bradsaw, {Aaron S.}",

note = "Funding: EU H2020 Marie Sk{\L}odowska-Curie Actions Individual Fellowships SAFS – Development of Screw Anchors for Floating marine renewable energy System arrays incorporating anchor sharing. H2020-MSCA-IF-2016, Grant no. 753156 (08/17-07/19).",

year = "2019",

month = may,

doi = "10.1016/j.compgeo.2019.01.007",

language = "English",

volume = "109",

pages = "34--45",

journal = "Computers and Geotechnics",

issn = "0266-352X",

publisher = "Elsevier",

}

TY - JOUR

T1 - Effect of soil deformability on the failure mechanism of shallow plate or screw anchors in sand

AU - Cerfontaine, Benjamin

AU - Knappett, Jonathan

AU - Brown, Michael

AU - Bradsaw, Aaron S.

N1 - Funding: EU H2020 Marie SkŁodowska-Curie Actions Individual Fellowships SAFS – Development of Screw Anchors for Floating marine renewable energy System arrays incorporating anchor sharing. H2020-MSCA-IF-2016, Grant no. 753156 (08/17-07/19).

PY - 2019/5

Y1 - 2019/5

N2 - Most analytical approaches for the design of shallow plate and screw anchors in tension are based on the limit equilibrium of a rigid soil wedge for which a horizontal stress distribution acting on the failure plane is assumed. Finite element analysis for a wide range of soil properties was carried out to identify the shape of the failure mechanism and to study the stress distribution at failure. Results show that soil deformation modifies the stress field around the anchor and increases the uplift capacity. A semi-analytical approach is proposed to describe this stress distribution, based on peak friction angle.

AB - Most analytical approaches for the design of shallow plate and screw anchors in tension are based on the limit equilibrium of a rigid soil wedge for which a horizontal stress distribution acting on the failure plane is assumed. Finite element analysis for a wide range of soil properties was carried out to identify the shape of the failure mechanism and to study the stress distribution at failure. Results show that soil deformation modifies the stress field around the anchor and increases the uplift capacity. A semi-analytical approach is proposed to describe this stress distribution, based on peak friction angle.

KW - Anchors

KW - Design

KW - Failure mechanism

KW - Finite element analysis

KW - Sand

UR - http://www.scopus.com/inward/record.url?scp=85060345808&partnerID=8YFLogxK

U2 - 10.1016/j.compgeo.2019.01.007

DO - 10.1016/j.compgeo.2019.01.007

M3 - Article

AN - SCOPUS:85060345808

VL - 109

SP - 34

EP - 45

JO - Computers and Geotechnics

JF - Computers and Geotechnics

SN - 0266-352X

ER -