Paper Title: Seismic Response of Liquid Storage Tank Considering Uncertain Soil Parameters

Recent Advances in Computational Mechanics and Simulations, Vol-I

Sandip Kumar Saha., & Hitesh Kumar

Properties of soil and structure govern the effects of soil-structure interaction on the seismic response of any structure. However, it is well known that there involves high uncertainty in the engineering properties of the soil in its natural state. The present study attempts to investigate the effects of the uncertain soil properties on the seismic responses of liquid storage tank. Critical soil parameters, such as shear wave velocity and mass density, are represented by suitable probability distribution functions and used in the analyses. The liquid storage tank is modeled using the lumped mass idealization and the soil domain is modeled utilizing the finite element approach. A sufficiently large number of coupled soil-tank models are generated with each model having a unique variation of soil parameters along the depth. Utilizing Monte Carlo simulation technique, it is observed that the uncertain soil parameters have a significant effect on the peak response quantities of the liquid storage tank.

• Liquid storage tank
• Seismic response
• Soil-structure interaction
• Uncertainty