Odnos pregrađivanja i sigurnosti Ro-Ro brodova

Slapničar, Vedran (1998) Odnos pregrađivanja i sigurnosti Ro-Ro brodova. = Scientific master's thesis , Sveučilište u Zagrebu, Fakultet strojarstva i brodogradnje, UNSPECIFIED. Mentor: Grubišić, Izvor.

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Abstract (Croatian)

S obzirom na sve veće zahtjeve sigurnosti Ro-Ro brodova želi se razviti projektni alat koji bi direktno davao siguran projekt. Kao prvi korak trebalo je riješiti odnos pregrađivanja i sigurnosti, odnosno postignutog indeksa pregrađivanja koji je određuje. Da bi se ovo riješilo, trebalo je prikupiti podatke za dovoljan broj brodova. Nakon iscrpne analize kapaciteta putnika i vozila brodovi su, složeni u dvije grupe i svakom od njih je pridodana šifra koja nam je olakšala daljnje analize. Za obje grupe izbor je ograničen na godišta izgradnje od 1983. do sada, a broje nešto vise od 200 brodova. Podaci složeni po stupcima za svaki brod izabrani su na način da bude sto vise jednoobraznih podataka tako da je sakupljeno za obje grupe brodova 49 podataka te opći plan u formatu A4. Prezentirana je baza podataka koja je podijeljena u dvije karakteristične grupe, Grupa 1 i Grupa 2. Grupa 1 predstavlja brodove koji koriste Ro-Ro tehnologiju za prijevoz automobila, kamiona i ostalih teških vozila sa smještajem za preko 200 putnika. Grupa 2 predstavlja brodove koji koriste Ro-Ro tehnologiju za prijevoz automobila, teških vozila i kontejnera bez smještaja za putnike osim za vozače. Brodovi su složeni po grupama u tablice te je napravljena analiza njihovih glavnih značajki. \Napravljena je analiza tipova konfiguracija i pregrađivanja. Ustanovljena su 2 osnovna sustava gradnje Ro-Ro brodova sa svojim varijantama. Dani su primjeri glavnih rebara, a brodovi su složeni u tablice prema sustavima gradnje i duljini, godinama gradnje i klasifikacijskom društvu. Na kraju se nalaze tablice i dijagrami sa ukupnim vrijednostima. Mole se zaključiti da postoje dvije karakteristične brodogradnje sa svojim posebnostima i to japanska brodogradnja s jedne strane i europska brodogradnja s druge strane. Brodovi su danas većih duljina i građeni su uglavnom prema sustavu gradnje 1 tako da je ovaj sustav odabran za daljnja istraživanja. Na osnovi izvedenih zaključaka primijenila su se pravila na osnovi vjerojatnosne metode i riješio problem definiranja modela. Odredio se indeks pregrađivanja izabranih 6 modela A, B, C, D, E i F Ro-Ro brodova. Ispitana je ovisnost postignutog indeksa pregrađivanja s obzirom na ""wing"" tankove, kao i ugradnje istisninske palube, i njezin utjecaj na spomenuti indeks. Napravljena je i analiza osjetljivosti na primjeru promjene odnosa LIB i B/T osnovnih modela. Na kraju je dan zaključak kao sinteza svih analiza i smjernice za nastavak rada.

Abstract

With respect to the increased safety requirements of Ro-Ro ships, it is necessary to develop design tools which would produce directly a safe project. The first step to take has been the solution of the relation between subdivision and safety, namely between the index of subdivision and the safety that it determines. In order to solve this problem, a sufficient number of ships had to be analysed to give the required data. After having thoroughly analysed their passenger and vehicle capacity, the ships were classified into two groups and each of the ships was given a code which made the analysis easier. Both groups contain the ships built since 1983, and the number of ships is a bit more than 200 ships. The data are grouped in columns for each ship in that way that they contain as many uniform data as possible, so that 49 data items has been collected, and a general plan in A4 size. The database, divided in two characteristic groups, Group 1 and Group 2, has been presented. Groupl comprises the ships which use Ro-Ro technology for automobile, lorry and heavy good vehicle transport and the passenger capacity of over 200 passengers. Group 2 comprises the ships which use Ro-Ro technology for automobile, heavy good vehicle and container transport without the passenger capacity except for the drivers. The ships are grouped in tables, and their main particulars are analysed. Analysis of the type of configuration and subdivision has been made. Two basic design systems of Ro-Ro ships, and their variants, have been established. The examples of midship sections have been given, and the ships are grouped in tables according to their design systems and length, year of building, and classification societies. In the end, the tables and diagrams with the total values are given. It can be concluded that there are two characteristic design systems with its particularities: the Japanese design system on the one hand, and the European on the other. The ships of today have a greater length and are built mainly in the design system number 1, so that this system has been chosen for further research On the basis of these conclusions, the rules on the basis of the probability method have been applied, and the problem of model definition has been solved. The attained index of subdivision has been determined for the chosen 6 models of Ro-Ro ships, A, B, C, D, E, and F. The relation between the attained index of subdivision and the wing tanks, as well as the influence of the buoyant deck on the index of subdivision have been analysed. The sensitivity analysis on the example of the change of L/B and B/T relations of basic models has been carried out. A final conclusion has been made in the form of synthesis of all analyses, and the orientation for further research has been given.

Item Type: Thesis (Scientific master's thesis)
Uncontrolled Keywords: oštećeni brod; stabilitet; stanje krcanja; istisninska paluba; pregrađivanje Ro-Ro brodova
Divisions: 600 Department of Naval Engineering and Marine Technology > 610 Chair of Hydromechanics of Marine Structures
Date Deposited: 22 Sep 2014 18:00
Last Modified: 16 Oct 2015 13:20
URI: http://repozitorij.fsb.hr/id/eprint/74

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