考虑表面波影响时挡水结构的动水压力

Hydrodynamic Pressures on Retaining Structure Considering Effect of Water Surface Wave

根据流体运动的普遍方程建立了水体表面的一般条件，研究了水平简谐地面运动时挡水结构的动水压力，所建议的分析方法能够考虑表面波影响、水体可压缩性、库底材料吸收效应等各种因素作用，具有统一的计算格式和较高的计算效率．通过算例，讨论了库水表面波对动水压力的影响．结果表明，在低频干扰下，表面波的影响甚大，特别是对低水头挡水结构的动水压力影响更为显著．

Based on the equation of fluid mechanics,a general condition of water surface is derived to investigate the hydrodynamic pressures on retaining structure due to harmonic horizontal ground motion.The present method can be used to consider the effects of water surface wave,water compressibility,reservoir bottom absorption etc.Numerical analysis shows that this method has a unified calculating pattern and is very effective.The effect of impounded water surface wave on hydrodynamic pressures is discussed and some useful conclusions are drawn.