Nonlinear Modelling for Offshore Robustness. A Sensitivity Study.
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Détails bibliographiques
| Auteur(s): |
Michele Betti
Ostilio Spadaccini Andrea Vignoli |
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| Médium: | papier de conférence | ||||
| Langue(s): | anglais | ||||
| Conférence: | IABSE Workshop: Safety, Failures and Robustness of Large Structures, Helsinki, Finland, 14-15 February 2013 | ||||
| Publié dans: | IABSE Workshop, 14-15 February 2013, Helsinki | ||||
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| Page(s): | 128-135 | ||||
| Nombre total de pages (du PDF): | 8 | ||||
| Année: | 2013 | ||||
| DOI: | 10.2749/222137813807018917 | ||||
| Abstrait: |
The assessment of existing offshore steel jacket structures for use beyond their initial life requires a proper design of an inspection plan aimed to constantly check-up the structural elements (both members and joints). There is consequently a need to define a set of indicators that, possibly combined with a continuous dynamic monitoring system, provides a reasonable measure of structural robustness and damage tolerance. To investigate these aspects the paper proposes to develop non-linear static pushover analyses to assess the system reserve strength: damages, or deteriorations, of primary and secondary structural components are assumed to evaluate their effects on the robustness of the structure and to evaluate the possibility to employ a structural monitoring system as a check-up of the integrity of the structural elements. |
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