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针对渡槽动力性能对大型水利工程安全运行的影响问题,基于南水北调工程中某大型(三槽)渡槽工程构造型式,利用大型有限元分析软件建立了三维有限元模型,并对槽中无水及送水工况进行了动力特性和地震动力时程相应分析。结果表明,在动力反应中,槽内水体有明显的震荡,不同工况下渡槽的动力特性及动力响应都有明显的区别;渡槽侧墙是结构的抗震薄弱部位,在地震作用时正常运行工况下侧墙高度能够保证槽内水体不溢出。
In view of the influence of dynamic performance of aqueducts on the safe operation of large-scale water conservancy projects, a three-dimensional finite element model was established based on a large-scale (three-tank) aqueduct project in the South-to-North Water Diversion Project. Working conditions were dynamic characteristics and seismic dynamic time history corresponding analysis. The results show that there is obvious oscillation in the dynamic response of the aqueduct, and the dynamic characteristics and dynamic response of the aqueduct are obviously different under different working conditions. The aqueduct sidewall is the weak part of the structure, which can work normally during the earthquake Side wall height to ensure that the tank does not overflow the water.