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Soil Structure Interaction Analysis of Tanks Filled with Fluid

Chaithra, M and Krishnamoorthy, Agrahara and Nafisa, Naurin P M (2015) Soil Structure Interaction Analysis of Tanks Filled with Fluid. In: Soil Structure Interaction Analysis of Tanks Filled with Fluid, 19/12/2015, Universiti Putra Malaysia, Malaysia.

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Abstract

Failure of tanks filled with fluid occurs when subjected to earthquakes. In the conventional analysis of tanks with fluid, the tank is assumed to be fixed at the base and the flexibility of soil is not accounted in the analysis. However, it is well known that actual behavior of tank not only depends on the stiffness of tank but also on the stiffness of foundation and supporting soil system. Realistic analysis of tank supported on soil requires interaction between the tank, soil and foundation. In the proposed study, the tank resting on soil is analysed considering the effect of soil. Finite element method is used to model the tank, foundation and soil. Tank is modeled using two noded beam elements, foundation and soil is modeled using four noded plane strain element. The interaction between fluid and tank is modeled by pressure formulation approach. The developed analysis is used to study the effect of soil on response of tank. The various response parameters considered for the study are the variation of pressure in the fluid, the base shear and the acceleration. Three types of soil with different flexibility are considered in order to study the soil structure interaction (SSI) effect. The effect of thickness of tank on soil structure interaction is also investigated in the proposed study. It is concluded from the study that the flexibility of the soil significantly affects the response of tank and the effect of soil structure interaction may be either beneficial or detrimental on the response of tank. For realistic analysis of tank resting on soil, the effect of soil structure interaction needs to be considered

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Finite Element, Fluid- Structure- Soil Interaction, Rectangular Tank, Seismic response
Subjects: Engineering > MIT Manipal > Civil Engineering
Depositing User: MIT Library
Date Deposited: 02 Feb 2017 14:03
Last Modified: 02 Feb 2017 14:03
URI: http://eprints.manipal.edu/id/eprint/148260

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