附加质量法在简单竖井结构模态分析中的应用

摘要

水力式升船机是我国提出的具有自主知识产权、 利用水能作为提升动力和安全保障措施的新型垂直升船机形式.针对该型升船机复杂的结构特性,采用先从单筒的简单结构入手,逐渐复杂化几何体的研究思路,用附加质量法对单筒结构进行用户单元布置建模,并开发Python代码,模拟出竖井内不同液面深度时前6阶振型以及频率和特征向量参与系数.通过对前6阶振型不同液面深度时的频率分析,为多筒耦合结构研究奠定基础.%The hydraulic floating ship lift is a new type vertical ship lift using water as the ascending power and safety measures, which is put forward with independent intellectual property rights in China. In view of the complex structural characteristics of the ship lift, we consider the simple structure from the single tube to start a little bit of complex geometry of the research ideas. We establish the user model by the additional mass method, and develop the Python code to simulate the 6th order mode and the frequency and eigenvector participation coefficients in different depths of the shaft. We analyze the modal characteristics of the superficial depth of the first 6 steels, which is useful for further research.