Seismic Responses of Large Height-Width Ratio Liquid Storage Structure with Base Isolation and Baffles

With the shortage of land resources, the engineering application of large height-width ratio liquid storage structure is of great significance. 3-D numerical calculation models of large height-width ratio liquid storage structure are established by ANSYS. The elements Solid 65 and Solid 185 are used to simulate the concrete and the bearing, while the element Fluid 80 is used to simulate the liquid. The dynamic responses of four types of structure are comparatively investigated, which are non-isolated structure with double baffles, isolated structure with double baffles, non-isolated structure with triple baffles and isolated structure with triple baffles. The results show that under the Tianjin waves, the wall tensile stress of the non-isolated structure with triple baffles is decreased by 50% compared to the non-isolated structure with double baffles, while the wall tensile stresses of the isolated structures with double and triple baffles are increased by 10% and 122%, respectively, compared to those of the non-isolated structures. It is shown that conventional rubber isolation is not suitable for the large height-width ratio liquid storage structures with baffles, where the load-bearing capacity and safety of the structure can be improved by increasing the number of horizontal baffles. © 2024, Jordan University of Science and Technology. All rights reserved.