Time-Evolution of Risk For an Array of Moored Floating Breakwaters Using Stochastic Simulation

The time-evolved risk of failure for an array of chain-moored floating breakwaters is quantified during its design life under the action of monochromatic waves in the frequency domain based on a Monte Carlo simulation technique. The numerical analysis of the array of floating breakwaters is based on a three dimensional hydrodynamic analysis of the floating body coupled with the static and dynamic analysis of the mooring chains. The effect of corrosion is considered in the analysis using an existing empirical model for the increase of corroded depth with time. Parametric studies are carried out for a wide range of wave frequencies and different corrosion level in order: (i) to investigate the response of floating array and the time-evolution of the risk of the floating array and (ii) determine the optimal maintenance scheme.