Most of the previous studies on the curved front Pile-Supported Breakwaters (PSB) dealt with the wave transmission past the structure and wave reflection. Fewer studies have reported wave-induced pressures on the front face of curved front PSB. The structure geometry and a limited number of pressure port locations are the uncertainties in integrating the measured dynamic pressures on the front face for obtaining the wave force. Therefore, in the present study, the wave-induced pressures, total forces, and moments on a circular cum parabola shape pile-supported breakwater (CPS-PSB) model are investigated through experiments carried out in a wave flume. The CPS-PSB is subjected to the action of regular waves in intermediate to deep-water conditions. The effect of integrating a tubular wave screen (TWS) on its seaside is also studied. It is found that the CPS-PSB experiences more vertical force for a higher submergence depth and the maximum vertical force is about 1.2 times the maximum horizontal force. The presence of TWS reduces the vertical force for the higher relative submergence, with a maximum reduction of about 50%, which still does not significantly reduce the horizontal force on CPS-PSB even though the pressures are reduced on the concave profile. There is also an increase in the magnitude of vertical forces in the presence of TWS with a reduction in h/d for long waves. The trend in the variation of the moment is similar to that of the horizontal force. The CPS-PSB in the absence of the wave screen is suggested as a better option for application in deeper waters.
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