【作者】 罗兴远；

【导师】 王永学；

【作者基本信息】 大连理工大学 ， 港口海岸及近海工程， 2011， 硕士

【摘要】 近年来,弧型胸墙斜坡式护岸及海堤在实际工程中得到了越来越广泛的应用。可是能够用来计算弧型胸墙斜坡式护岸越浪量的公式却很少,且由于试验条件不同及影响因素很多,各公式计算结果有一定差异,其适用性有待探讨。针对此问题,本文通过物理模型试验,采用传统的称重法测量不同模型弧型胸墙斜坡护岸的越浪量,将实测值与经验公式计算值进行比较分析,探讨了经验公式对于弧型胸墙斜坡护岸越浪量计算的适用性。研究结果表明：(1)弧型胸墙斜坡护岸满足条件：相对水深3.58≤d/Hs≤4.57；波陡0.07≤Hs/Lpo≤0.08；谱峰周期1.2s≤Tp≤1.4s；相对胸墙顶高0.62≤Hc/Hs≤1.22；坡度m=1.75；相对肩宽bl/Hs=0；底坡i≤1/25；可采用Van der Meer公式(概率法有墙)计算其越浪量。(2)弧型胸墙斜坡护岸满足条件：相对水深2.64≤d/Hs≤3.43；波陡0.02≤Hs/Lpo≤0.03；谱峰周期2.14s≤Tp≤2.41s；相对胸墙顶高0.5≤Hc/Hs≤1.29；坡度m=1.75；相对肩宽bl/Hs=0；底坡i≤1/25；可采用规范公式计算其越浪量。在平均越浪量的测量过程中,采用传统称重法的同时尝试了一种新的测量方法——图像分析法,将图像分析法结果与称重法试验结果进行了比较分析,发现图像分析法结果与称重法试验结果吻合较好,表明图像分析法是合理的,可行的。本文研究成果可供工程设计参考。更多还原

【Abstract】 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.更多还原