Abstract
Based on potential flow theory and arbitrary Lagrangian–Eulerian method, shell–liquid and shell–wind interactions are solved respectively. Considering the nonlinearity of tank material and liquid sloshing, a refined 3-D wind–shell–liquid interaction calculation model for liquid storage tanks is established. A comparative study of dynamic responses of liquid storage tanks under wind, earthquake, and wind and earthquake is carried out, and the influences of wind speed and wind interference effect on dynamic responses of liquid storage tank are discussed. The results show that when the wind is strong, the dynamic responses of the liquid storage tank under wind load alone are likely to be larger than that under earthquake, and the dynamic responses under wind–earthquake interaction are obviously larger than that under wind and earthquake alone. The maximum responses of the tank wall under wind and earthquake are located in the unfilled area at the upper part of the tank and the filled area at the lower part of the tank respectively, while the location of maximum responses of the tank wall under wind–earthquake interaction is related to the relative magnitude of the wind and earthquake. Wind speed has a great influence on the responses of liquid storage tanks, when the wind speed increases to a certain extent, the storage tank is prone to damage. Wind interference effect has a significant effect on liquid storage tanks and wind fields. For liquid storage tanks in special environments, wind and earthquake effects should be considered reasonably, and wind interference effects cannot be ignored.
Highlights
With the development of economy and society, more and more liquid storage tanks are built in seismically active areas, in extreme cases, these areas may belong to strong wind areas, which leads to the threat of wind and earthquake to large-scale liquid storage tanks in the whole life cycle
For high Reynolds number incompressible steady flow, velocity-inlet is chosen as the boundary condition at the entrance; pressure-outlet without backflow is chosen as the boundary condition at the outlet, that is, at the exit boundary of the flow field, the diffusion flux of the physical quantity of the flow field along the normal direction of the exit is 0; the non-slip wall boundary is used as boundary condition on the structure surface and ground
It is commonly believed that structure dynamic responses are usually dominated by either wind or earthquake, when wind speed is high, responses of liquid storage tanks under wind are greater than that under earthquake, besides, responses of liquid storage tanks under combination of wind and earthquake are more important
Summary
With the development of economy and society, more and more liquid storage tanks are built in seismically active areas, in extreme cases, these areas may belong to strong wind areas, which leads to the threat of wind and earthquake to large-scale liquid storage tanks in the whole life cycle. Base excitation by using finite element method based on coupled acoustic–structural andGenerally coupled speaking, dynamic responses of liquid storage speaking, tank involves complex fluid–structure interaction, and Generally dynamic responses of liquid storage tank numerical simulation is an effective means to solve this problem. Flores and Godoy [12] used numerical methods to study the of buckling problemtanks of liquid storage have made certain explorations on the behavior liquid storage under wind tanks under typhoon, and obtained that bifurcation buckling analysis could better evaluate the critical load. In view of the structural dynamic response under the combined action of wind and wind earthquake, to study the distribution of wind pressure and the stability of liquid storage tanks under loads. The dynamic responses of the liquid storage tank under wind, earthquake, and wind and earthquake are studied in many aspects, which is of great significance to the rationality of the design and the reliability of the operation of the liquid storage tank
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