1 AIT Asian Institute of Technology

Stability and dynamics response of hybrid spar buoy platforms

AuthorChana Sinsabvarodom
Call NumberAIT Thesis no.OTM-11-11
Subject(s)Buoys

NoteA thesis submitted in partial fulfillment of the requirements for The degree of Master of Engineering In Offshore Technology and Management, School of Engineering and Technology
PublisherAsian Institute of Technology
Series StatementThesis ; no. OTM-11-11
AbstractThis study introduces the use of new technology of floating structure called Hybrid Cell-truss Spar buoy platform for Andaman Sea. The platform is an upgrading design of its counterpart traditional Spar platform in order to enhance the platform dynamic stability performance. In addition to its dynamic stability performance, the Hybrid Cell-Truss Spar is reusable after the end of its service life leading to lower decommissioning cost when compared with that of fixed offshore structure. The proposed three models are namely: mono cell-truss spar, three cells-truss spar and four cells-truss spar platform, which involve two stages of analysis: free floating and stationary keeping. The stationary keeping studies the dynamics response of hybrid cell-trussed spar platform with its mooring line system in time domain and frequency domains. The proposed platform in various water depth of 200m, 400m and 600m is subject to environmental load of 10 year return period and 100 year return period for operating and extreme storm conditions, respectively. The structural responses will be used to assess the platform structural performance with respect to serviceability criteria of a floating structure. Further use of this structural response is for structural strength design. It can be drawn from the results that three of these platform configurations are suitable for operation in Andaman Sea. However, in view of dynamics response, the hybrid cell-truss Spar platforms in three cells-truss spar and four cells-truss spar platforms are appropriate for moderate water depth but mono cell truss spar buoy platform or classic truss spar platform is appropriate for moderate water depth.
Year2011
Corresponding Series Added EntryAsian Institute of Technology. Thesis ; no. OTM-11-11
TypeThesis
SchoolSchool of Engineering and Technology (SET)
DepartmentDepartment of Civil and Infrastucture Engineering (DCIE)
Academic Program/FoSOffshore Technology and Management (OTM)
Chairperson(s)Chiu, Gregory L.F.;Widjaja, Joko Harsono;Thongchai Phanyasahachart
Examination Committee(s)Pennung Warnitchai;Punchet Thammarak
Scholarship Donor(s)RTG Fellowship
DegreeThesis (M. Eng) - Asian Institute of Technology, 2011


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