Potential of a Repair System for Grouted Connections in Offshore Structures: Development and Experimental Verification
- Grouted connections are intensively used in offshore rigs, platforms as well as jacket and monopile offshore wind turbine structures. Being located in remote offshore conditions, these connections can experience considerable adverse loading during their lifetimes. Degradation was reported inside similar connections, which were installed in the last three decades. Grouting in the offshore sites may often be proven difficult, which eventually leads to reduced load-bearing capacity of connections in the long run. Thus, repair and rehabilitation of such connections should be planned ahead to minimize operational delays and costs. In this study, scaled grouted connections were manufactured using a novel mould, whose integrity were monitored using digital image correlation (DIC). The connections were loaded under static load to visualize the main failure pattern using distributed fibre optic sensors and acoustic emission (AE) analysis. Grouted connections were then repaired using aGrouted connections are intensively used in offshore rigs, platforms as well as jacket and monopile offshore wind turbine structures. Being located in remote offshore conditions, these connections can experience considerable adverse loading during their lifetimes. Degradation was reported inside similar connections, which were installed in the last three decades. Grouting in the offshore sites may often be proven difficult, which eventually leads to reduced load-bearing capacity of connections in the long run. Thus, repair and rehabilitation of such connections should be planned ahead to minimize operational delays and costs. In this study, scaled grouted connections were manufactured using a novel mould, whose integrity were monitored using digital image correlation (DIC). The connections were loaded under static load to visualize the main failure pattern using distributed fibre optic sensors and acoustic emission (AE) analysis. Grouted connections were then repaired using a cementitious injectable grout. The effectiveness of the grout injection was monitored using dye penetration technique. Finally, specimens are reloaded to identify the potential of such repair for grouted connections.…
Autor*innen: | Götz HüskenORCiD, Md Shamsuddoha, Stephan PirskawetzORCiD, Detlef Hofmann, Matthias Baeßler, Hans-Carsten KühneORCiD |
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Dokumenttyp: | Zeitschriftenartikel |
Veröffentlichungsform: | Verlagsliteratur |
Sprache: | Englisch |
Titel des übergeordneten Werkes (Englisch): | Marine Structures |
Jahr der Erstveröffentlichung: | 2021 |
Organisationseinheit der BAM: | 7 Bauwerkssicherheit |
7 Bauwerkssicherheit / 7.2 Ingenieurbau | |
7 Bauwerkssicherheit / 7.4 Baustofftechnologie | |
8 Zerstörungsfreie Prüfung | |
8 Zerstörungsfreie Prüfung / 8.6 Faseroptische Sensorik | |
Verlag: | Elsevier Ltd. |
Jahrgang/Band: | 77 |
Erste Seite: | 102934 |
DDC-Klassifikation: | Technik, Medizin, angewandte Wissenschaften / Ingenieurwissenschaften / Ingenieurbau |
Freie Schlagwörter: | Acoustic emission analysis; Cracks; Fibre optic sensors; Grouted connection; Offshore; Rehabilitation; Repair; Static loading |
Themenfelder/Aktivitätsfelder der BAM: | Infrastruktur |
DOI: | 10.1016/j.marstruc.2021.102934 |
Verfügbarkeit des Dokuments: | Datei im Netzwerk der BAM verfügbar ("Closed Access") |
Datum der Freischaltung: | 03.02.2021 |
Referierte Publikation: | Ja |
Datum der Eintragung als referierte Publikation: | 17.05.2021 |