Abstract
Guyed towers have low natural frequencies compared with generally encountered wave frequencies. They are therefore highly susceptible to low frequency second-order wave forces resulting from the nonlinear phenomenon in the integrated fluid pressure on the submerged structure. A simplified approach is presented here to obtain the second-order wave forces encountered in random sea state for offshore guyed towers using a simulation procedure. Nonlinear response of a guyed tower to second-order and first-order wave forces, and a combination of the two are obtained in time domain. The time histories of responses and the wave forces are analysed to investigate their stochastic characteristics.
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