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Insights into compaction grouting for offshore pile foundations
- The authors are currently investigating the possibility to apply compaction grouting for offshore pile foundations (Jacket piles as well as monopiles) as a possible retrofitting technique for an optimised foundation concept. In this research project, we are developing a design approach aiming to predict the ideal amount and properties of a grout for a specific soil situation and desired improvement of pile bearing capacity after Installation and during service time. Both numerical and experimental tests have been carried out to investigate the injection process during which a highly viscous grout is injected into the soil under high pressure to displace and compact the surrounding soil without fracturing it. The implicit Material Point Method (MPM) based on a mixed formulation is the numerical technique chosen to deal with the expected large deformations and the arbitrary shape of the developing grout bulb. The usage of MPM prevents both the need of remeshing and the numericalThe authors are currently investigating the possibility to apply compaction grouting for offshore pile foundations (Jacket piles as well as monopiles) as a possible retrofitting technique for an optimised foundation concept. In this research project, we are developing a design approach aiming to predict the ideal amount and properties of a grout for a specific soil situation and desired improvement of pile bearing capacity after Installation and during service time. Both numerical and experimental tests have been carried out to investigate the injection process during which a highly viscous grout is injected into the soil under high pressure to displace and compact the surrounding soil without fracturing it. The implicit Material Point Method (MPM) based on a mixed formulation is the numerical technique chosen to deal with the expected large deformations and the arbitrary shape of the developing grout bulb. The usage of MPM prevents both the need of remeshing and the numerical instability induced by extensive mesh distortion. For validation with experimental results, we have constructed a testing chamber with one transparent sidewall. This chamber enables us to observe the injection process directly at the transparent vertical window and to measure the in-plane soil displacements and strains by means of the Digital Image Correlation (DIC) technique. The results already reveal the interrelation of soil and grout properties for a successful usage of this common ground improvement technique.…
Autor*innen: | Peter Geißler, Pablo Cuéllar, Götz HüskenORCiD, Hans-Carsten KühneORCiD, Matthias BaeßlerORCiD |
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Dokumenttyp: | Beitrag zu einem Tagungsband |
Veröffentlichungsform: | Graue Literatur |
Sprache: | Englisch |
Titel des übergeordneten Werkes (Englisch): | Proceedings of the ASME 2018 37th International Conference on Ocean, Offshore and Arctic Engineering OMAE 2018 |
Jahr der Erstveröffentlichung: | 2018 |
Organisationseinheit der BAM: | 7 Bauwerkssicherheit |
7 Bauwerkssicherheit / 7.2 Ingenieurbau | |
7 Bauwerkssicherheit / 7.4 Baustofftechnologie | |
Jahrgang/Band: | 9 |
Erste Seite: | V009T10A013, 1 |
Letzte Seite: | 9 |
DDC-Klassifikation: | Technik, Medizin, angewandte Wissenschaften / Ingenieurwissenschaften / Angewandte Physik |
Technik, Medizin, angewandte Wissenschaften / Ingenieurwissenschaften / Ingenieurbau | |
Freie Schlagwörter: | Compaction grouting; Digital Image Correlation (DIC); Material Point Method (MPM); Mixed formulation; Offshore pile foundation |
Themenfelder/Aktivitätsfelder der BAM: | Energie |
Infrastruktur | |
Veranstaltung: | 37th International Conference on Ocean, Offshore and Arctic Engineering (OMAE 2018) |
Veranstaltungsort: | Madrid, Spain |
Beginndatum der Veranstaltung: | 18.06.2018 |
Enddatum der Veranstaltung: | 22.06.2018 |
ISSN: | 2153-4772 |
ISBN: | 978-0-7918-5130-2 |
Verfügbarkeit des Dokuments: | Datei im Netzwerk der BAM verfügbar ("Closed Access") |
Datum der Freischaltung: | 21.09.2018 |
Referierte Publikation: | Ja |
Datum der Eintragung als referierte Publikation: | 29.11.2018 |