本文介绍如何用全息干涉法求水工建筑物的振型,并叙述了模型设计以及实验技术。最后,结合两个实际工程求出水电站厂房振型图和重力坝的二维振型图,并与理论计算或有限元方法计算的结果进行了比较。 This article describes how to use Holographic Interferometry to find the vibration modes of hydraulic structures, and describes the model design and experimental techniques. Finally, combining the two practical projects, the two-dimensional vibration mode diagrams of vibration modes and gravity dam of hydropower station are obtained and compared with the theoretical or finite element method.