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master's thesis
Dinamička analiza spuštanja podvodne strukture
2020. urn:nbn:hr:190:334240
Pletikapa, Srđan
University of Rijeka
Faculty of Engineering
Department of Naval Architecture and Ocean Engineering
Section of the Ship Dynamics

Cite this document

Pletikapa, S. (2020). Dinamička analiza spuštanja podvodne strukture (Master's thesis). Rijeka: University of Rijeka, Faculty of Engineering. Retrieved from https://urn.nsk.hr/urn:nbn:hr:190:334240

Pletikapa, Srđan. "Dinamička analiza spuštanja podvodne strukture." Master's thesis, University of Rijeka, Faculty of Engineering, 2020. https://urn.nsk.hr/urn:nbn:hr:190:334240

Pletikapa, Srđan. "Dinamička analiza spuštanja podvodne strukture." Master's thesis, University of Rijeka, Faculty of Engineering, 2020. https://urn.nsk.hr/urn:nbn:hr:190:334240

Pletikapa, S. (2020). 'Dinamička analiza spuštanja podvodne strukture', Master's thesis, University of Rijeka, Faculty of Engineering, accessed 19 February 2025, https://urn.nsk.hr/urn:nbn:hr:190:334240

Pletikapa S. Dinamička analiza spuštanja podvodne strukture [Master's thesis]. Rijeka: University of Rijeka, Faculty of Engineering; 2020 [cited 2025 February 19] Available at: https://urn.nsk.hr/urn:nbn:hr:190:334240

S. Pletikapa, "Dinamička analiza spuštanja podvodne strukture", Master's thesis, University of Rijeka, Faculty of Engineering, Rijeka, 2020. Available at: https://urn.nsk.hr/urn:nbn:hr:190:334240

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Metadata
TitleDinamička analiza spuštanja podvodne strukture
Title (english)Dynamic analysis of subsea structure deployment
AuthorSrđan Pletikapa
MentorMarko Valčić (mentor)
MentorJasna Prpić-Oršić (komentor)
Committee memberAlbert Zamarin (predsjednik povjerenstva)
Committee memberMarko Hadjina (član povjerenstva)
Committee memberTin Matulja (član povjerenstva)
Committee memberDunja Legović (član povjerenstva)
Committee memberMarko Valčić (član povjerenstva)
GranterUniversity of Rijeka
Faculty of Engineering
(Department of Naval Architecture and Ocean Engineering)
(Section of the Ship Dynamics)
Rijeka
Defense date and country2020-09-24, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Shipbuilding
Abstract
Ovaj rad se sastoji iz dva dijela. U prvom dijelu su opisane sve faze koje prolazi odobalna struktura od same izrade na kopnu, do njene instalacije na odobalnoj lokaciji. Poseban naglasak je stavljen na transport i instalaciju odobalne strukture. Struktura, čiji su transport i instalacija objašnjeni u okviru ovog rada, koristi se prilikom priključivanja novih proizvodnih platformi na postojeći cjevovod. U okviru drugog dijela provedena je dinamička analiza u vremenskoj domeni za odobalnu operaciju spuštanja spomenute strukture. Na osnovu rezultata dinamičke analize izabrana je optimalna pozicija krana DLB-a, te pripadajuća granična stanja mora pri kojima je moguće sigurno obavljati odobalnu operaciju spuštanja strukture. Dinamička analiza je provedena pomoću računalnog programa Orcaflex, tvrtke Orcina. Sam diplomski rad je izrađen u suradnji s odjelom NAVAS, tvrtke SAIPEM S.p.A. Rijeka. Dodatno je, na enciklopedijskoj razini, obrađena teorijska pozadina modeliranja parametara okoliša i odziva plovnog objekta. Također je obrađena metodologija provedene analize, te su iznesene osnovne karakteristike upotrijebljenog računalnog programa Orcaflex. Kao mjerodavna su korištena pravila DNV-GL-a kao nadležnog klasifikacijskog društva. Na osnovu provedenih rezultata dinamičke analize može se zaključiti da su, prilikom spuštanja podvodne strukture, dominantna opterećenja koja se javljaju uslijed interakcije strukture i valova. Gibanje DLB-a je imalo manji utjecaj na sile koje se javljaju u opremi za podizanje tereta. Uz pretpostavku da sustav za sidrenje DLB-a, kompenzira gibanja drugog reda.
Abstract (english)
The thesis consists of two parts. The first part, which generally describes all undergoing phases during subsea structure deployment. From the fabrication of the offshore structure to its installation. Transport and installation procedures were more in-depth explained. The structure analyzed in the thesis is used to connect the new offshore structure to the existing pipeline. The second part of the thesis dealt with dynamic analysis in the time domain for structure lowering operation. Based on analysis results, the optimal DLB crane position is chosen and allowed sea states were defined. The software used for dynamic analysis was Orcina’s Orcaflex. The thesis itself was done in collaboration with the NAVAS department of Saipem S.p.A. branch office in Rijeka. Additionally, on a general level, the theoretical background of environmental loads modeling and floating object motion is given. The methodology of analysis is given, together with some general descriptions of Orcaflex characteristics and possibilities. All criteria used were according to DNV GL and Saipem S.p.A. internal procedures. Based on the results of dynamic analysis, we can say that during offshore structure lowering, most dominant loads were from structure-wave interaction. DLB motion had a smaller influence on loads in rigging equipment. Naturally, it is assumed that DLB's second-order motions are compensated with the mooring system.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:190:334240
Study programmeTitle: Graduate University Study of Naval Architecture
Study programme type: university
Study level: graduate
Academic / professional title: magistar/magistra inženjer/inženjerka brodogradnje (magistar/magistra inženjer/inženjerka brodogradnje)
Type of resourceText
File originBorn digital
Access conditionsAccess restricted to students and staff of home institution
Terms of useLicence In copyright icon
Created on2020-12-16 10:38:14