It can be shown that the power spectral density matrix of velocities and/or accelerations process of water particles in stochastic waves had only one non-nil independent eigenvalue and eigenvector.

• 结合桥墩基础处不同深度水质点波动速度和速度的功率谱密度矩阵仅具有一个独立特征值的特点,推导了随机波动模拟的简化计算公式,简化公式具有较高的计算效率。