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FLOATOVER BARGE RESPONSES FOR RANDOM WAVES

Lim, Eu Shawn (2011) FLOATOVER BARGE RESPONSES FOR RANDOM WAVES. Universiti Teknologi PETRONAS. (Unpublished)

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Abstract

Floatover method was a novel method of topside installation introduced in the 70s to overcome the limitations of the conventional crane lifting method. This was due to the increasing weight of topsides which made it physically impossible currently to install complex & heavy topsides. It is also compounded by the fact that most of the heavy lift crane vessels are mostly located in the Gulf of Mexico, thus preventing installation works in African & Asian regions from being carried out in a timely & economical marmer. The floatover process itself is a unique method in which it allows the limitations of the conventional crane lifting method to be overcome on top of it being easily implemented as barges could be easily refurbished for the floatover process. The floatover process is however not without its faults, the nature in which it installs the topside by ballasting makes it particularly susceptible to environmental loads such as waves. Therefore, this experiment was setup to study into the effects of random waves affecting the floatover barge. The experiment will focus on identifying the governing parameters which affect the motion of the barge & this will be measured by understanding the resultant RAO values. The experiment will study the effects of significant wave height, peak period & drafts on the barge motions. The methodology will employ theoretical analysis which involves the use of FroudeKrylov theories to study the theoretical RAOs. It will be then be compared against the model test values which will be transformed using the model RAO formula of -.}SRfS(f) to check for the validity of our theoretical analysis.Findings of the experiment indicated that the governing factor of the barge RAO is the barge draft that is adjusted during the installation phase. Factors such as significant wave height & peak period played an almost non-existent role in affecting the barge's RAO. Thus as such, it is imperative that further research be done to fine tune the barge draft values as it greatly reduces barge motions if properly deployed.

Item Type: Final Year Project
Academic Subject : Academic Department - Civil Engineering - Structures, materials and construction
Subject: T Technology > TA Engineering (General). Civil engineering (General)
Divisions: Engineering > Civil
Depositing User: Users 2053 not found.
Date Deposited: 12 Nov 2013 14:55
Last Modified: 25 Jan 2017 09:41
URI: http://utpedia.utp.edu.my/id/eprint/10478

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