Seismic analysis of base-isolated liquid storage tanks using the BE-FE-BE coupling technique

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

Research output: Contribution to journalArticle

42 Citations (Scopus)

Abstract

A three-dimensional soil-structure-liquid interaction problem is numerically simulated in order to analyze the dynamic behavior of a base-isolated liquid storage tank subjected to seismic ground motion. A dynamic analysis of a liquid storage tank is carried out using a hybrid formulation, which combines the finite shell elements for structures and the boundary elements for liquid and soil. The system is composed of three parts: the liquid-structure interaction part, the soil-foundation interaction part, and the base-isolation part. In the liquid-structure interaction part, the tank structure is modeled using the finite elements and the liquid is modeled using the internal boundary elements, which satisfy the free surface boundary condition. In the soil-foundation interaction part, the foundation is modeled using the finite elements and the half-space soil media are modeled using the external boundary elements, which satisfy the radiation condition in the infinite domain. Finally, above two parts are connected with the base-isolation system to solve the system's behavior. Numerical examples are presented to demonstrate the accuracy of the developed method, and an earthquake response analysis is carried out to demonstrate the applicability of the developed technique. The properties of a real LNG tank located in the west coast of Korea are used. The effects of the ground and the base-isolation system on the behavior of the tank are analyzed.

Original languageEnglish
Pages (from-to)1151-1158
Number of pages8
JournalSoil Dynamics and Earthquake Engineering
Volume22
Issue number9-12
DOIs
Publication statusPublished - 2002 Jan 1

All Science Journal Classification (ASJC) codes

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

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