Laboratory Study Of Wave Action On Double Platform Slope Revetment

In the coast engineering and port construction, revetment is important a hydraulic structure. The most basic purposes of revetment are to resist the flow, wave, storm surge and preventing overtopping of water damaging the pedestrians and facilities for land. Dike project needs to ensure the strength and stability to meet the design requirements, at the same time the crest elevation should meet the certain height, so as to control the influence of wave run-up and overtopping of the rear area.In this paper, the study of double platform slope revetment is based on physical model test.The base elevation is-1.67m, and set the first level platform and1#crest at+3.0m, then set the second platform and2#crest at+4.5m, last set3#crest at+5.8m.The study considers the effects of relative width of platform B/L, relative height of crest A/H, relative elevation of platform S/d and width ratio between the first and second platform B1/B2and other factors on the platform crest wave pressure and wave run-up. And discussed the influence of different forms of shoulder on the pressure of crest, and studied the influence of opening rate of the first platform on panel buoyancy of the first platform and wave pressure of crest.The results of the study show that, the relative elevation of platform S/d effect on crest pressure is more apparent, reaches a maximum value at S2/d=0.9～1.2.Wave run-up is influenced by relative height of crest and relative height of platform more obviously.As shoulder double cages can decrease the point pressure of3#crest by40%～50%compared to "8" blocks. As the open porosity of the first platform increased, both the maximum buoyancy of panel of the first platform and the wave force of crest decreased.