基于有限条法考虑流体作用下大型渡槽槽身结构的动力特性

The Dynamic Characteristic Calculation of Large-Scale Aqueduct Body with Fluid Influence Based on Finite Stripe Method

在已有的有限条法计算渡槽结构动力特性的基础上,采用附加质量法来计算考虑流体的动水作用下渡槽的动力特性,分3种工况计算.结果表明,随着槽内水深的不同,槽身的自振频率会发生显著的变化.为采用有限条法来计算渡槽结构在流体作用下的动力效应提供了一定的参考作用。

Based on the dynamic character of aqueduct body calculated by the finite stripe method, the paper calculates the dynamic character of three states of aqueduct body with fluid influence by added mass method, which result shows that the free vibration frequency of aqueduct body is clearly different with the changing of water location of aqueduct body. The paper therefore gives some referenced values about the dynamic effect of aqueduct with fluid influence by the finite stripe method.