【摘要】 考虑到渡槽槽体内水体的晃动对结构模态正交性的影响,采用有限元以及有限体积方法分析了两种不同高宽比的渡槽结构在附加质量模型、Housner水体模型以及势流体这三种水体模型下的流固耦合动力特性,包括自振频率和主振型。在此基础上,探讨了三种不同水体模型下渡槽结构流固耦合模态的差异,得到渡槽结构在不同水体模型下的动力特性敏感性因素,为渡槽抗震抗风设计提供参考依据。更多还原

【Abstract】 The finite element method and finite volume method were used to analyse two kind depth-width radio of aqueduct with different water model such as the added mass model,Housner water model and potential-based model by considering the effect of water sloshing to the modal orthogonality of aqueduct.The results contain the natural frequency and vibration mode.On this basis,the difference of the results among the different water model was analysed to reflect the fluid-solid coupling modal of aqueduct and sensitive factors of the aqueduct structure which could provide the theoretical basis and could be referenced in the design of the aqueduct structure.更多还原