Rock-steel interface testing and considerations for gravity foundations for tidal energy generators

A. D. Ziogos, M. J. Brown, A. Ivanovic, N. Morgan

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)

Abstract

This paper presents results from research which aims to establish better understanding of the shear resistance of rock-steel interfaces to develop enhanced gravity foundations for tidal energy generators. Findings from laboratory testing are presented along with issues arising from field visits at sites with high tidal energy potential in Scotland. Direct shear box testswere carried out on rock analogue-steel interfaces at relatively low normal stresses. Different rock analogues and various techniques (polishing, machining etc.) were used for the surface preparation of steel samples resulting in a wide range of rock-steel relative interface roughness. Thisallowed the investigation of the effect of surface roughness on the interface behaviour along with the effect of the rock’s unconfined compressive strength. Results of laboratory testing suggest that relative rock-foundation roughness and rock strength are significant controls on interface resistance.

Original languageEnglish
Title of host publicationFrontiers in Offshore Geotechnics III
EditorsVaughan Meyer
Place of PublicationLeiden
PublisherCRC Press/Balkema
Pages1245-1250
Number of pages6
ISBN (Electronic)9781315675510
ISBN (Print)9781138028487
Publication statusPublished - 2015
Event3rd International Symposium on Frontiers in Offshore Geotechnics - Scandic Holmenkollen Park , Oslo, Norway
Duration: 10 Jun 201512 Jun 2015
http://www.ngi.no/en/Selected-topics/ISFOG-2015---Oslo/

Conference

Conference3rd International Symposium on Frontiers in Offshore Geotechnics
Abbreviated titleISFOG 2015
CountryNorway
CityOslo
Period10/06/1512/06/15
Internet address

Fingerprint

Gravitation
steel
Rocks
gravity
Steel
Testing
rock
energy
Surface roughness
roughness
Potential energy
Polishing
potential energy
surface roughness
compressive strength
Compressive strength
Machining
laboratory
effect

Cite this

Ziogos, A. D., Brown, M. J., Ivanovic, A., & Morgan, N. (2015). Rock-steel interface testing and considerations for gravity foundations for tidal energy generators. In V. Meyer (Ed.), Frontiers in Offshore Geotechnics III (pp. 1245-1250). Leiden: CRC Press/Balkema.
Ziogos, A. D. ; Brown, M. J. ; Ivanovic, A. ; Morgan, N. / Rock-steel interface testing and considerations for gravity foundations for tidal energy generators. Frontiers in Offshore Geotechnics III . editor / Vaughan Meyer. Leiden : CRC Press/Balkema, 2015. pp. 1245-1250
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Ziogos, AD, Brown, MJ, Ivanovic, A & Morgan, N 2015, Rock-steel interface testing and considerations for gravity foundations for tidal energy generators. in V Meyer (ed.), Frontiers in Offshore Geotechnics III . CRC Press/Balkema, Leiden, pp. 1245-1250, 3rd International Symposium on Frontiers in Offshore Geotechnics, Oslo, Norway, 10/06/15.

Rock-steel interface testing and considerations for gravity foundations for tidal energy generators. / Ziogos, A. D.; Brown, M. J.; Ivanovic, A.; Morgan, N.

Frontiers in Offshore Geotechnics III . ed. / Vaughan Meyer. Leiden : CRC Press/Balkema, 2015. p. 1245-1250.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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AB - This paper presents results from research which aims to establish better understanding of the shear resistance of rock-steel interfaces to develop enhanced gravity foundations for tidal energy generators. Findings from laboratory testing are presented along with issues arising from field visits at sites with high tidal energy potential in Scotland. Direct shear box testswere carried out on rock analogue-steel interfaces at relatively low normal stresses. Different rock analogues and various techniques (polishing, machining etc.) were used for the surface preparation of steel samples resulting in a wide range of rock-steel relative interface roughness. Thisallowed the investigation of the effect of surface roughness on the interface behaviour along with the effect of the rock’s unconfined compressive strength. Results of laboratory testing suggest that relative rock-foundation roughness and rock strength are significant controls on interface resistance.

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Ziogos AD, Brown MJ, Ivanovic A, Morgan N. Rock-steel interface testing and considerations for gravity foundations for tidal energy generators. In Meyer V, editor, Frontiers in Offshore Geotechnics III . Leiden: CRC Press/Balkema. 2015. p. 1245-1250