【摘要】 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。更多还原

【Abstract】 Aiming at the aqueduct dynamic performance impact on safe operation of large water conservancy project,based on the form of a certain large tri-slot aqueduct in south-to-north water diversion project,large-scale finite element analysis software is used to establish three-dimensional finite element model.And then the dynamic characteristics and seismic time-history response of its slot are analyzed under the operating conditions of with water or not.The result shows that in the dynamic response,water in the tank has obvious shock;there is a very clear distinction of dynamic characteristics and dynamic response under different operating condition,and the sidewall of the aqueduct is a seismic weak part;under the earthquake,the sidewall height is able to ensure that the water in the tank does not overflow at the normal operating conditions.更多还原