三峡升船机上闸首结构抗震分析研究

对三峡升船机上闸首结构，导出了档水面上动水压力的附加质量计算式，和直接滤频法按顺河向和横河向分别求得了上闸首的前５阶频率的振型。据此，采用安全二次型组合法对三峡升船机上闸首的地震反应进行了详细的分析研究，研究方法和研究成果可供设计部门参考应用。

Earthquake-resistant analysis and study on the upper lock head structure of ship lift for Three Gorges Project

For the upper lock head structure of the ship lift for Three Gorges Project, the calculation formula of its additional mass of dynamic water pressure on the water retaining face have been gained. The first 5 step frequencies and vibration modes of the upper lock head have been gained respectively by adopting the direct frequency filter method following the river direction and transversal to river direction. The detailed analysis and study on the earthquake reaction of the upper lock head of ship lift for Three Gorges Project have been conducted by the full secondary combination method. All the study method and results shall be provided to the design department for reference and application.