Seismic response of base-isolated liquid storage tanks considering fluid–structure–soil interaction in time domain

✍ Scribed by Kyung Hwan Cho; Moon Kyum Kim; Yun Mook Lim; Seong Yong Cho

• Publisher: Elsevier Science
• Year: 2004
• Tongue: English
• Weight: 595 KB
• Volume: 24
• Category: Article
• ISSN: 0267-7261
• DOI: 10.1016/j.soildyn.2004.05.003

✦ Synopsis

The seismic response analysis of a base-isolated liquid storage tank on a half-space was examined using a coupling method that combines the finite elements and boundary elements. The coupled dynamic system that considers the base isolation system and soil -structure interaction effect is formulated in time domain to evaluate accurately the seismic response of a liquid storage tank. Finite elements for a structure and boundary elements for liquid are coupled using equilibrium and compatibility conditions. The base isolation system is modeled using the biaxial hysteretic element. The homogeneous half-space is idealized using the simple spring-dashpot model with frequencyindependent coefficients. Some numerical examples are presented to demonstrate accuracy and applicability of the developed method. Consequently, a general numerical algorithm that can analyze the dynamic response of base-isolated liquid storage tanks on homogeneous half-space is developed in three-dimensional coordinates and dynamic response analysis is performed in time domain.