双排机水电站厂房结构动力特性研究

以李家峡工程为背景 ,分析了双排机厂房结构的特点 ,并建立双排机厂房结构整体三维有限元模型及相应的单排机结构三维有限元模型 ,计算对比了它们在动力特性上的差异 ,并对差异产生的原因进行了分析。在此基础上 ,通过对李家峡水电站内振源的分析 ,进行了结构共振校核。研究结果表明 ,李家峡水电站的双排机布置方案是一种较合理的、值得推广的结构形式

Study on the dynamic characteristics of the power house structure of two-row placed units

Power house of two row placed units is suitable for the hydropower station in gorge area in which the general power house structure of one\|row placed unit cannot meet the requirements of the layout of units, whereas the structure of power house of two\|row placed units is more complicated. It is important to research the dynamic characteristics of power house of two\|row placed units. In this paper, the feature of power house structure of two\|row placed units is analyzed for Lijiaxia Hydropower Station. 3\|D FEM model of the power house structure of two\|row placed units and the corresponding 3\|D FEM model of the power house structure of one\|row placed unit are constructed.The difference of dynamic characteristics of these two structures is compared and analyzed.The vibration\|sources of Lijiaxia hydropower station are analyzed, and the mechanism of the vibration\|sources is further investigated. According to the check of the structure resonance vibration, it is shown that the power house structure of two\|row placed units has some advantages in dynamic characteristics.