Offshore pipelines crossing active seismic faults

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dc.contributor.author Τριμιντζίου, Μαρία el
dc.contributor.author Trimintziou, Maria en
dc.date.accessioned 2016-06-30T09:30:46Z
dc.date.available 2016-06-30T09:30:46Z
dc.date.issued 2016-06-30
dc.identifier.uri http://dspace.lib.ntua.gr/handle/123456789/42912
dc.rights Default License
dc.subject Active faults el
dc.subject Offshore geohazards el
dc.subject Offshore pipelines el
dc.subject Pipeline crossing fault el
dc.subject pipeline under fault rupture el
dc.subject Αγωγός σε διασταύρωση με ρήγμα el
dc.subject Ενεργά σεισμικά ρήγματα el
dc.subject Εντατική κατάσταση υποθαλάσσιου αγωγού el
dc.subject Θαλάσσιοι γεωκίνδυνοι el
dc.subject Υποθαλάσσιοι αγωγοί el
dc.title Offshore pipelines crossing active seismic faults en
heal.type masterThesis
heal.classification Underwater pipelines en
heal.classificationURI http://id.loc.gov/authorities/subjects/sh85139626
heal.language en
heal.access free
heal.recordProvider ntua el
heal.publicationDate 2015-11
heal.abstract Nowadays, the exploitation of hydrocarbons reserves in deep seas and oceans, in combination with the need to transport hydrocarbons among countries, has made the design, construction and operation of offshore pipelines very significant. Under this perspective, it is evident that many more offshore pipelines are expected to be constructed in the near future and in particular in the wider Mediterranean region. Given the fact that offshore pipelines are crossing extended areas, they may face a variety of geo-hazards that cause substantial permanent ground deformations and potentially threaten the integrity of the pipeline. The present study focuses on the impact of permanent ground deformations induced by active seismic faults on offshore pipelines. For this purpose, a numerical simulation (through finite-element modeling and strain-based criteria) is made, in order to study the distress of offshore pipelines subjected to PGDs induced by active normal and reverse seismic faults at the seabed. Factors, such as the geometrical properties of the fault, the mechanical properties of the ruptured soil formations, and the pipeline characteristics, are examined. Beginning with an extended introduction to the subject, by presenting some general aspects of offshore pipelines and marine geo-hazards, the problem under investigation and the motivation of the study are explained. Subsequently the geo-hazard of seismic faults is further analyzed as well as the special seismic characteristics of the Mediterranean region. After a literature review on similar researches, a validation of the numerical model, developed in the present study, is performed, through the comparison of the numerical results with the analytical predictions of another study. Having validated the numerical model, a range of critical parameters is examined and their impact on the pipeline is presented. After some interesting conclusions regarding the seismic vulnerability of offshore pipelines, potential cost-effective mitigation measures are proposed taking into account constructability issues. en
heal.sponsor IKY - “Fellowships of excellence for postgraduate studies in Greece – Siemens program” en
heal.advisorName Σακελλαρίου, Μιχαήλ en
heal.advisorName Ψαρρόπουλος, Πρόδρομος el
heal.committeeMemberName Μαυράκος, Σπυρίδων en
heal.committeeMemberName Χατζηγεωργίου, Ιωάννης el
heal.academicPublisher Εθνικό Μετσόβιο Πολυτεχνείο. Σχολή Ναυπηγών Μηχανολόγων Μηχανικών el
heal.academicPublisherID ntua
heal.fullTextAvailability true

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