Author(s)

Zivko Vukovic & Neven Kuspilic

Abstract

In this paper the authors present a developed analytical procedure for predicting the wave load on submarine pipelines to the action of random waves, representing the nonlinear drag force by cubic approximation. Using Morison's equation, the spectra of the horizontal and vertical component of wave force on pipelines are defined by the spectral analysis method. A numerical example is included to demonstrate the potential of the analytical model and to quantify the effects of nonlinear drag force on the structural load. 1 Introduction The in-line wave forces acting on a slender member of marine structure consist of two parts; drag and inertia. In the case when the wave length is much larger than the characteristic structural diameters, the drag forces can be significant. Since the d

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