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 ac-curacy of this model was further investigated by a comparison between the predicted and the related code re-sults.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.
Segmental joint of shieldFinite element methodThree-dimensional analysis