椭圆余弦波理论在波峰面上升高度计算中的应用

在开敞式高桩码头的设计中,波峰面上升高度是确定上部结构顶面高程的重要因素。针对波峰面上升高度的计算理论问题,对二阶斯托克斯波和椭圆余弦波理论进行论述。结合西非某工程案例,采用不同理论计算各控制点的波要素。结果表明:在长周期波浪作用海域,计算波峰面上升高度前应首先计算相对水深,当d0.125L时,采用二阶斯托克斯波理论计算结果误差较大,采用椭圆余弦波理论计算结果更符合实际情况。

Application of cnoidal wave theory on calculation of maximum wave rising height

The maximum wave rising height is one important factor in the calculation of top level in the design of open high-pile wharf.Aiming at the selection of calculation theory for the wave rising height,we expound the theory of second-order Stokes wave and cnoidal wave.Combining with one project in West Africa,we use different theories to calculate the wave parameter of every control point.The results show that the relative water depth should be calculated before the calculation of wave rising height in the long period wave area.When d is smaller than 0.125L,the result based on the second-order Stoles wave theory has large error,but the result based on the cnoidal wave theory is more in line with the actual situation.