不规则波作用下明基床上开孔沉箱垂直力分析

通过水槽物理模型试验,对不规则波作用下明基床上开孔沉箱所受到的波浪力进行了较为系统的试验研究,分析讨论了开孔沉箱总水平力峰(谷)值时刻对应的总垂直力与基床相对高度、开孔率、波陡、相对水深、消浪室相对宽度等影响因素之间的关系,并与暗基床的研究成果做了对比讨论,给出了明基床上开孔沉箱总垂直力比值(总水平力极值时刻对应的总垂直力/总垂直力极值)与各影响因素之间的计算关系式,研究结果可为工程应用提供参考。

Analysis on total vertical forces of perforated caisson mounted on

Through 2-D experiments in the wave-current flume under the condition of irregular waves, a systematical experimental investigation has been carried out on wave forces of perforated caisson sitting on the rubble mound foundation. The relationships between the total vertical force corresponding to the moment of crest (valley) value of total horizontal force and main influencing factors, such as the relative chamber width, the relative foundation height, the wave steepness, the relative depth and the porosity of perforated caisson have been analyzed. In addition, experiments in this study are compared with other researches of perforated caissons on rubble filled foundation. A simplified method for calculating the ratios of total vertical forces (total vertical force when the total horizontal force reaches its extremes/the extremes value of total vertical forces) is presented, which can be applied in practical engineering design and application.