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Study On Wave Overtopping Of Sloping Revetment With Arc Parapet And New Method Measuring Wave Overtopping

Posted on:2012-06-20Degree:MasterType:Thesis
Country:ChinaCandidate:X Y LuoFull Text:PDF
GTID:2132330335954874Subject:Port Coastal and Offshore Engineering
Abstract/Summary:PDF Full Text Request
In recent years, sloping revetment and seawall with arc parapet are more and more used in the engineering. But the empirical formula calculating the wave overtopping of sloping revetment with arc parapet is very few. Because of the difference of experimental conditions and many other influence factors, the calculated values of different formula are different from each other and the applicability of empirical formula remains open to contention. Based on the physical model test, wave overtopping of different sloping revetments with arc parapet was measured using weighting method and the measured value was compared with the calculated value of empirical formula. The applicability of empirical formula calculating wave overtopping of different sloping revetment with arc parapet was discussed. The results show that when the relative depth of water is between 3.58 and4.57, the wave steepness is 0.07~0.08, the period of spectral peak is 1.2s~1.4s, the relative distance (from water level to the crest of parapet) is 0.62~1.22, the ratio of slope is 1.75,the shoulder width is 0, the bed slope is less than 1/25, we can use Van der Meer formula (probabilistic method with wall) to calculate the wave overtopping of sloping revetment with arc parapet. When the relative depth of water is between 2.64 and3.43, the wave steepness is 0.02~0.03, the period of spectral peak is 2.14s~2.41s, the relative distance (from water level to the crest of parapet) is 0.5-1.29, the ratio of slope is 1.75, the shoulder width is 0, the bed slope is less than 1/25, we can use specification formula to calculate the wave overtopping of sloping revetment with arc parapet.When we used weighting method to measure the wave overtopping, a new kind of image analysis method measuring wave overtopping was tried out. The value of image analysis method was compared with weighting method. The value of the image analysis method agree with the weighting method. The results show that image analysis method is reasonable and feasible.The results of study may serve as a reference for the engineering design.
Keywords/Search Tags:Arc parapet, wave overtopping, empirical formula, image analysis method, contrastive analysis
PDF Full Text Request
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