Conference Papers
Permanent URI for this collectionhttps://idr.nitk.ac.in/handle/123456789/28506
Browse
Search Results
Item Effect of Soil-Structure Interaction on the Seismic Response of Elevated Water Tank(Springer Science and Business Media Deutschland GmbH, 2022) Jogi, J.; Jayalekshmi, B.R.The elevated tanks are the most critical and strategic structures since the tank contains heavy fluid mass and is placed on a slender staging. The foundation transmits the loads from the superstructure to the subsoil, and the displacement of the soil influences the response of the structure. Therefore, it is important to study the seismic response of liquid storage tanks with the incorporation of soil-structure interaction (SSI). This study aims to find the importance of the effects of supporting soil medium in the response of the water tanks. An elevated intze water tank of capacity 7,00,000 L on frame type staging was modeled and analyzed by considering SSI in finite element software ANSYS. To incorporate the effect of SSI, rock, dense, stiff, and soft supporting soil strata were considered. The infinite extent of soil was modeled using viscous boundaries. The transient analysis was carried out for the 3D liquid tank models with different supporting soils using Kobe earthquake data. The base shear, base moment, and structural displacements were found with the variation of depth of fluid inside the tank for all the models. The results showed that the maximum base shear and the base moment were observed in a tank resting on hard soil for the completely filled condition of liquid. The displacements are higher in the case of tanks resting on soft soil. © 2022, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.Item Sloshing Response of Water Tanks Under Seismic Excitation(Springer Science and Business Media Deutschland GmbH, 2022) Jogi, J.; Jayalekshmi, B.R.Liquid storage tanks are the predominant structures and they have to be designed to withstand major earthquake loads. In the present study, an elevated intze water tank of capacity 700 m3 was considered and analyzed for seismic effects. Finite element modeling of the tank was made in ANSYS. A series of transient analyses was carried out for El Centro and Kobe earthquakes which are applied in the horizontal direction. The fluid inside the tank accelerates and causes additional hydrodynamic pressures on the tank. Past studies reveal that the convective hydrodynamic pressure is more than the impulsive hydrodynamic pressure. Time history plots were made to describe the sloshing phenomenon in the tank for various levels of the liquid. The sloshing displacements for the one-third level of the liquid were found to be maximum. The sloshing displacements in the horizontal direction are more than in the vertical direction. © 2022, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.