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BADP-G’s structural performance subjected to tsunami wave loading and its attenuated ground acceleration sourced from Manila Megathrust

MOHD JUHARI, MOHAMAD AFIQ (2014) BADP-G’s structural performance subjected to tsunami wave loading and its attenuated ground acceleration sourced from Manila Megathrust. Universiti Teknologi PETRONAS. (Unpublished)

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Abstract

The main approach of this paper is paper is to study the effect of a natural phenomenon known as tsunami waves and its attenuated seismic ground loading in Sarawakian water sourced from Manila Trench which situated for almost 1200km away from BADP-G platform. General practice is the design of fixed offshore platforms in Malaysia are governed primarily by the wave forces at the sea. However, seismic analysis is not taken into the design consideration simply because Malaysia’s location is situated on a stable Eurasian plate in the sense of having very low seismic activity. There is, hence, a need to assess this platform when the platform is actually seen to be exposed to a tsunami threat in the north-east of Malaysia at the Manila Trench. The project shall envelope a simulation approach of regenerating the tsunami wave properties based on vital geological parameters of the Manila Trench. As the trench ruptures, tsunami wave is formed and followed by lateral ground movement of the earth. Calculation of the attenuated lateral ground movement produced from the rupture is calculated through an equation to predict the peak ground acceleration of a given distance in South China Sea region. The project shall continue in finding the most severe direction by applying omni-directional 100 years storm wave as per designed and the maximum joint displacement of that direction shall be picked as the worst direction. Primarily, the main body of the project is ascertaining the tsunami wave height plus its attenuated ground acceleration will induced the failure of the platform’s leg through member maximum unity check and joint displacement coming from the worst direction of force is analyze by using a finite element software known as SACS 5.3. For each scenario, the input of tsunami wave height is increased and analyzed by using static analysis with non-linear pile interaction; of which the static behavior of the platform will be then investigated. As expected, a threshold of a tsunami wave height is obtained at a point where the platform leg fails. Ultimately, the annual rate of exceedence is then predicted through return period of the threshold tsunami wave height that leads to the failure of the BADP-G platform.

Item Type: Final Year Project
Academic Subject : Academic Department - Civil Engineering - Water and environment - Water
Subject: T Technology > TA Engineering (General). Civil engineering (General)
Divisions: Engineering > Civil
Depositing User: Users 2053 not found.
Date Deposited: 26 Sep 2014 15:02
Last Modified: 25 Jan 2017 09:36
URI: http://utpedia.utp.edu.my/id/eprint/14044

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