烟台港龙口港区防波堤波浪断面试验研究

模型按重力相似准则设计,根据试验场地、现有块体重量及试验要求,4个断面选用不同长度比尺。采用新型吸收式造波机造波并选用合适的波谱按《波浪模拟规程》要求进行率波,进行了3个斜坡式断面和1个直立式沉箱断面的稳定性、越浪量及堤后次生波试验,针对沉箱断面进行了测力试验。试验结果表明在各种试验工况组合下,0+190 m断面(+6.0 m)和0+1 451.3 m(+7.0 m)断面各部分均保持稳定,随堤顶高程的增加,越浪量及堤后次生波明显减小;0+750 m断面和0+800 m断面顶高程为+7.0 m断面在极端高水位重现期50 a不规则波连续作用3 h后栅栏板失稳,增至+8.0 m后,栅栏板为临界稳定,其他部分保持稳定。

Wave cross-sectional model test of breakwater in Longkou port

According to the gravity similarity rule, the test ground, the weight of existed blocks and the test requirement,different length scales were selected in the wave cross-sectional test. The new generation absorbing generator was adopted. At the same time, suitable wave spectra was adopted and wave parameters were calibrated as per wave test model regulation. The test contents include the stabilty observation, wave overtopping discharge and secondary wave height measurement of three sloping cross secitons and one vertical cross section. The test results indicate that the cross section 0 ＋ 190 m（ ＋ 6.0 m）and 0 ＋ 1 451.3 m（ ＋ 7.0 m） are stable under various conditions and the overtopping discharge and secondary wave height decrease obviously with the increasing of the top elevation of breakwater. Cross section 0 ＋ 750 m （ ＋ 7.0 m） and 0 ＋ 1 451.3 m（ ＋ 7.0 m） are unstable under extreme high water level. When the top elevation is ＋ 8.0 m, stockade board is critical stable, the other parts keep stable.