Seismic Response Analysis of an Unanchored Steel Tank under Horizontal Excitation

The seismic performance of liquid storage tank affects the safety of people's life and property. A 3-D finite element method (FEM) model of storage tank is established, which considers the liquid-solid coupling effect. Then, the displacement and stress distribution along the tank wall is studie...

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Bibliographic Details
Published inIOP conference series. Materials Science and Engineering Vol. 216; no. 1; pp. 12011 - 12016
Main Authors Rulin, Zhang, Xudong, Cheng, Youhai, Guan
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.06.2017
Subjects
Axial stress
Building codes
Compressive properties
Deformation
Elephants
Finite element method
Hoop stress
Liquid surfaces
Seismic design
Seismic response
Steel structures
Storage tanks
Stress concentration
Stress distribution
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Summary:The seismic performance of liquid storage tank affects the safety of people's life and property. A 3-D finite element method (FEM) model of storage tank is established, which considers the liquid-solid coupling effect. Then, the displacement and stress distribution along the tank wall is studied under El Centro earthquake. Results show that, large amplitude sloshing with long period appears on liquid surface. The elephant-foot deformation occurs near the tank bottom, and at the elephant-foot deformation position maximum hoop stress and axial stress appear. The maximum axial compressive stress is very close to the allowable critical stress calculated by the design code, and may be local buckling failure occurs. The research can provide some reference for the seismic design of storage tanks.
ISSN:1757-8981
1757-899X
DOI:10.1088/1757-899X/216/1/012011