新型反弧形面防波堤消浪效果的试验研究

Experimental Study on the Wave Dissipation for New Type Inverted-arc Breakwater

通过在波浪水槽中进行物理模型试验,研究相对半径、波陡、水深以及开孔率对新型反弧形面防波堤消浪效果的影响,以评价这种新型防波堤的消能效果。研究结果表明:反弧形防波堤的反射系数随相对半径的增大而减少,随波陡的变化则较为复杂;而防波堤的透射系数则变化较小并且维持较低数值;在不开孔时,反弧形防波堤在低水位的消浪效果较好,开孔后,在高水位时的消浪效果要好。

Through the physical model tests in wave flume,this paper analyzed the effect of the arc breakwater wave dissipation by the relative radius,wave steepness,depth and open porosity to evaluate its energy dissipation effect of the new breakwater.The results show that the reflection coefficient of inverted-arc breakwater decreases with the increases of relative radius,and reflection coefficient with the variation of wave steepness is quite complicated.The transmission coefficient of the breakwater changes slightly and maintains a low value.When not opening,inverted-arc breakwater wave dissipation effect is better in the low water level; after opening,the breakwater wave dissipation effect is better in the high water level.