Abstract
The humans’ need to use the oceans for exploration and extraction of oil has led to the development of engineering science in the field of offshore structures. Since it’s important to examine the offshore structures from different aspects and perspectives, we would have to evaluate many different parameters about them. So categorizing these parameters can help to perform their related analysis with more accuracy and more details. Due to the efficient force it exerts on the structure, the pressure distribution around every marine or hydraulic structure has a significant importance, and it even accounts for one of the dominant issues in designing and building of such structures. In the present study, an oil platform located in Phase 15 of South Pars oil fields, located in the Persian Gulf waters, has been analyzed using the FLOW 3D software. The outputs indicate that the pressure of water is distributed almost hydrostatically with the depth, and its maximum reaches 0.6 MPa at the bottom.
Highlights
From 1956, for taking into account the objectives of economic and optimizing aspects, the platforms’ decks began to decrease in scale, and a new generation of platforms similar to the ones today was built and developed
About the regular waves, it was observed that in the absence of uniform flow, the anticipated forces are higher than the measured ones, while in the presence of the uniform flows along with the regular waves, those anticipated forces would be smaller than the measured values
In the year 1390, Hedayatifar and Mazaheri made a study as the pushover analysis of offshore platforms under the wave impact forces to the deck
Summary
From 1956, for taking into account the objectives of economic and optimizing aspects, the platforms’ decks began to decrease in scale, and a new generation of platforms similar to the ones today was built and developed. In 1993, a series of large scale experiments were carried out in the delta wave channel of Delft Hydraulics Laboratory, in the Netherlands The purpose of these tests was to determine the forces exerted by the waves and the sea currents on the cylindrical legs of offshore structures [4]. One of the points that the API Regulations emphasize on them for conducting the pushover analysis, is the case where the deck height is insufficient and so, the waves hit the deck These wave forces on the deck were one of the main causes of damage to platforms in the Gulf of Mexico and the North Sea, and so the platforms under these forces essentially require inspections and investigations. The effects of different hydrodynamic parameters of the waves on the leg shear of offshore platforms are illustrated [6]
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