文档介绍：Soil Dynamics and Earthquake Engineering 24 (2004) 839–852
ate/soildyn
Seismic response of base-isolated liquid storage tanks considering
fluid–structure–soil interaction in time domain
Kyung Hwan Choa, Moon Kyum Kima,*, Yun Mook Lima, Seong Yong Chob
aDepartment of Civil Engineering, Yonsei University, Seoul 120-749, South Korea
bResearch Development Team, LG E&C, Seoul 100-722, South Korea
Abstract
The seismic response analysis of a base-isolated liquid storage tank on a half-space was examined using a coupling method bines
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 patibility 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.
q 2004 Elsevier Ltd. All rights reserved.
Keywords: Base-isolated liquid storage tank; Finite elements; Boundary elements; Soil–structure interaction; Base isolation system; Spring-dashpot model
1. Introduction The main objective of this study is to establish a general
numerical algorithm to analyze the dynamic responses of
The dynamic responses of a liquid storage tank to a base-isolated liquid storage tank on flexibly-supported
seismic motion differ from those of general structures such foundation. Formulations are d