WAVE FORCES ON VERTICAL PILES CAUSED BY 2- AND 3-DIMENSIONAL BREAKING WAVES

Soren Peter Kjeldsen, Alf Torum, Robert G. Dean

Abstract


The present study deals with analysis of results from a new experiment in which local wave forces on a vertical pile penetrating the free surface were measured, both in transient breaking waves and in 2- and 3-dimensional irregular seas, regular waves, and waves and uniform currents superposed. The performance of the entire experimental programme showed that extreme wave load intensities are associated with transient 2- or 3-dimensional breaking waves, of relatively short wave periods, and not with the highest waves in the simulated sea states. The total integrated in-line force and the total overturning moment caused by breaking waves exceeded the values measured in monochromatic regular waves by a factor of 3. Inception of wave breaking was caused by phase superposition, and occurred also for very low values of wave steepness s = 0.05.

Keywords


wave forces; 2D breaking; 3D breaking; breaking waves

Full Text: PDF

Creative Commons License
This work is licensed under a Creative Commons Attribution 3.0 License.