防波堤波浪透射系数现场观测及透射系数公式的验证

In-field observation of wave transmission coefficient of breakwater and verification of transmission coefficient formula

长周期波是影响港口工程结构设计的一个重要因素。其波浪特征不同于一般风浪及短周期波,波长较长,具有极强的穿越可透浪防波堤的能力,影响港内波况,而实测防波堤透射系数的方法少有人研究。文章针对港内波浪成分复杂的特点,利用方向谱区分不同方向波浪的特点,提出了一种现场实测防波堤波浪透射系数的方法,并基于现场实测结果验证了试验所得防波堤的透射系数计算公式。

Long period wave is an important factor affecting the structural design of port engineering. The wavecharacteristics are different from those general wind wave and short period wave. The wave condition in harbor isaffected by long period wave with strong ability through the permeable breakwater. And few methods have beenknown to study the field measurement of wave transmission coefficient of breakwater. According to the complexcharacteristics of the waves in harbor, a method for analyzing the wave transmission coefficient of rubble moundbreakwater was proposed based on the wave directional spectrum ,which can distinguish the different wave direction.Further, the analyzed results were used to verify- the effectiveness of the formula for the calculation of wavetransmission coefficient of rubble mound breakwater obtained by experimental studies.