考虑流固耦合下的渡槽地震分析  

作　　者：孔麟[1] 黄磊[1] 

机构地区：[1]西北电力设计院有限公司,西安710075

出　　处：《科技创新与应用》2023年第8期50-53,共4页Technology Innovation and Application

摘　　要：渡槽是重要的输水构筑物,具有顶部质量大的特点。传统的附加质量法,具有一定的假设,不能真实反映水体的作用。该文采用流固耦合理论,在地震作用下,考虑槽内水体的大幅晃动,采取地震波一致和多点输入进行计算。结果表明,水体用与结构相互作用会使结构产生类似于TLD(调谐液体阻尼器)的效应,减小地震作用,降低结构响应。因此,考虑流固耦合下的渡槽的地震分析,与实际更相符。Aqueduct is an important water conveyance structure, which has the characteristics of large top mass. The traditional additional mass method has certain assumptions and can not really reflect the function of water body. In this paper,based on the fluid-solid coupling theory, considering the large sloshing of the water body in the trough under the action of earthquake, the calculation is carried out using seismic wave consistency and multi-point input. The results show that the interaction between water and structure will make the structure produce an effect similar to TLD(tuned liquid damper), reduce the seismic action and reduce the structural response. Therefore, the seismic analysis of the aqueduct under fluid-solid coupling is more consistent with the reality.

关 键 词：渡槽 水体 地震 流固耦合 多点输入 有限元分析 

分 类 号：TV312[水利工程—水工结构工程]