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

Kyung Hwan Cho, Moon Kyum Kim, Yun Mook Lim, Seong Yong Cho

Research output: Contribution to journalArticle

56 Citations (Scopus)


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 frequency-independent 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.

Original languageEnglish
Pages (from-to)839-852
Number of pages14
JournalSoil Dynamics and Earthquake Engineering
Issue number11
Publication statusPublished - 2004 Dec 1


All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Geotechnical Engineering and Engineering Geology
  • Soil Science

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