merged

Stress Assesment of Jacket Steel Structure during Decommissioning Event
Wan Amirul Hakim Bin Wan Azami
Supervisor: Dr. Mohd Hairil Bin Mohd
Bachelor of Applied Science (Maritime Technology)
School of Ocean Engineering
Universiti Malaysia Terengganu
In the years ahead many oil platforms will be needed to be decommissioned and one
of the methods is rig-to-reef (RTR) program. Steel structure will be deployed to the
seabed and positioned as an artificial reef. This paper investigates the crushing
behavior of the steel jacket structure during the decommissioning process. Nonlinear
material behavior, including strain rate effects also taken into account when the
collision with the seabed occurred. The effect of the structure-seabed interaction on
the distribution of damage is studied by modeling both structures using nonlinear
numerical finite element using an ABAQUS EXPLICIT software. The expected result
will show the procedure or collection of data that can be used to assess, or aid in the
assessment of, the residual structural strength of a damaged steel structure, through
better understanding of the physical problem in relation to the behavior and physical
limitations of damaged steel structure.
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