Earthquake Analysis of Mini Tension Leg Platforms under Random Waves

International Journal of Civil Engineering

© 2016 by SSRG - IJCE Journal

Volume 3 Issue 10

Year of Publication : 2016

Authors : Shibin P Shaji, Dr. Jayalekshmi R.

10.14445/23488352/IJCE-V3I10P101

How to Cite?

Shibin P Shaji, Dr. Jayalekshmi R., "Earthquake Analysis of Mini Tension Leg Platforms under Random Waves," SSRG International Journal of Civil Engineering, vol. 3,  no. 10, pp. 1-5, 2016. Crossref, https://doi.org/10.14445/23488352/IJCE-V3I10P101

Abstract:

Mini Tension Leg Platform (TLP) is a new generation TLP of comparatively low cost, developed for the economic exploration and extraction of hydrocarbons from marginal deepwater oil fields. It can also be used as a utility, satellite, or early production platform for larger deepwater discoveries. These offshore structures should be able to stand up to the dynamic effects of environmental loads throughout their lifespan. These loads vary from temporary/transient loads induced by earthquakes and ocean storms to continuous loads due to wind, waves, and ocean currents. Since floating offshore structures aren't supported directly by the ground, however, effects of earthquakes on floating structures have received less attention compared with those on fixed structures. Consequently their seismic response has not been totally studied. In this study seismic analysis of mini TLP projected at the Morpeth region is carried out using the finite element software ANSYS AQWA. Here earthquake analysis is performed under random waves with variable water depth for determining surge, heave and pitch responses. The results show that the maximum response decreases with water depth.

Keywords:

Mini Tension Leg Platform, Random Waves, Earthquake Analysis.

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