Abstract
In this paper we obtain theoretical predictions of the environmental loading induced upon an offshore structure. The numerical predictions of base-shear and overturning moment that are herein presented concern a four-legged jacket structure scaled-down from a realistic offshore platform. The methodology that has been used in the determination of the hydrodynamic loading is based on the generalized Morison formula, which incorporates the contributions arising from the waves and a uniform current. The water-particle kinematics has been assessed by means of linear wave theory. The selected inertia and drag coefficients are the ones commonly utilized in the design practice of jacket platforms.
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