考虑液固耦合的三维水池地震动力性能研究  

Three-dimensional Dynamic Performance Analysis of Tank Considering the Liquidsolid Interaction

作　　者：张龙 Zhang Long(Shanghai Municipal Engineering Design Institute(Group)Co.,Ltd.,200092,China)

机构地区：[1]上海市政工程设计研究总院(集团)有限公司,200092

出　　处：《特种结构》2024年第5期32-37,共6页Special Structures

摘　　要：市政贮液构筑物中的液体在地震作用下会发生波动晃漾,产生的液动压力和冲击作用对结构动力特性和地震响应有明显的影响。本文以实际工程中的二沉池结构为例,建立包含流体和考虑与结构相互作用的三维数值模型,与现有规范对比验证了计算模拟方法的正确性和精确性,研究了结构径高比、储液量对结构地震动力性能的影响,讨论了三种地震波作用下水池不同高度处的动力响应,数值分析结果显示径高比、储液量对结构动力性能有明显的影响,地震激励作用下的水池底部和中部液动压力和弯矩相对较大,设计时应综合考虑合理选取结构参数和配筋。In the municipal liquid storage structure,liquid fluctuation would be induced subjected to seismic forces.The hydraulic pressure and impact action caused by the liquid fluctuation have an obvious influence on the dynamic characteristics and response of the structure.Based on the practical project,this paper presents a numerical liquid-solid interaction model to determinate the dynamic response under the seismic action.The accuracy of this model was further investigated by a comparison between the predicted and the related code results.The numerical results reveal that the height ratio of the structural diameter and the liquid storage volume significantly affected the seismic dynamic performance of the structure,the fluid pressure and bending moment induced by seismic waves were exhibited larger at the middle and bottom of the structure.It should be further considered in the design of the municipal liquid storage structure.

关 键 词：液固耦合 地震响应计算 市政贮液结构 

分 类 号：TU992.3[建筑科学—市政工程]