Experimental Study Of Oblique Wave Force Acting On A Anti-arc Surface Breakwater

Based on the special geomorphology formed by segmented offshore embankment,this paper presents a kind of the anti-arc surface breakwater and single protrusion breakwater with arc-shaped surface in the form of front wall structure by changing the geometrical shape of vertical breakwater wall.Compared with the vertical breakwater,the breakwater of anti-arc surface and single protrusion is that the arc-shaped surface is subjected to the horizontal wave pressure of different phases,so the resultant force of the wave force is small.At present,most of the studies on the anti-arc facade breakwater are carried out in the wave sinks,and are based on the positive incidence of waves,but the breakwater in the real waters is often subjected to oblique waves.In this paper,the three-dimensional physical model is used to study the wave pressure characteristics of the single-embankment breakwater of the anti-arc surface under different angles of incidence.The effects of different incident angles,wave elements,arc radius and so on are discussed.The relationship between the wave force of the embankment and the calculation method,and provide the technical basis for the application of the breakwater.1.The results show that the wave force is increasing with the relative depth D/R,and the increase of the relative wave height H/D increases with the wave steep H/L,and the increase of the relative radius R/L is decreasing And the wave force of the different incident wave on the anti-dike embankment is found.The larger the wave incidence angle is,the smaller the wave force is.2.When the peak and the trough are coming,the longitudinal distribution of the wave thickness of the single-embankment is the same as the triangular distribution.The maximum value of the wave pressure at the peak time is the hydrostatic surface,and the maximum of the trough moment wave pressure is the following two points in the vicinity,the transverse distribution of the wave pressure on the dike embankment acting on the anti-arc surface is not uniform due to the change of the incident angle.When the forward wave is incident,the maximum value of the wave pressure is 3#the compressive strength of the pressure section on both sides of the 3#section is basically symmetrical.When the maximum value of the wave pressure is 2#the pressure of the 1#and 2#pressure section is greater than that of the 4#and 5#sections,with the incident angle increases the difference between the two gradually increased..3.When the crest comes,the wave break in the three-dimensional wave harbor is less than the wave force of the breakwater in the two-dimensional sink.The reason is that the wave is reflected by the arc surface,and the wave of the reflected wave is in the direction of the side wall of the sink Angle,reflected wave again after the boundary of the tank reflection,the wave pressure measurement results have a certain impact.4.The influence of the wave force on the dike embankment with the incident angle of fifteen degrees,thirty degrees and forty degrees five degrees is compared with the wave force of the plane straight wall breakwater,and the effects of different incident waves The empirical formula of wave force on breakwater of single embankment.