Confining effect of concrete in double-skinned composite tubular columns SCIE SCOPUS KCI

Cited 1 time in WEB OF SCIENCE Cited 1 time in Scopus
Title
Confining effect of concrete in double-skinned composite tubular columns
Author(s)
Won, Deok Hee; Han, Taek Hee; Kim, Seungjun; Lee, Jung-Hwa; Kang, Young-Jong
KIOST Author(s)
Won, Deok Hee(원덕희)Han, Taek Hee(한택희)
Publication Year
2014-11
Abstract
A double-skinned composite tubular (DSCT) column, which consists of concrete and inner and outer tubes, was finally developed to overcome the weaknesses of concrete filled tube columns by reducing the self-weight of the column and confining the concrete triaxially. Research pertaining to the stiffness and strength of the column and the confining effect in a DSCT column has been carried out. However, detailed studies on the confining stress, especially the internal confining stress in a DSCT column, have not been carried out. Internal and external confining stresses should be evaluated to determine the effective confining stress in a DSCT column. In this paper, the confining stresses of concrete before and after insertion of an inner tube were studied using finite element analysis. The relationship between the internal or external confining stresses and the theoretical confining stress was investigated by parametric studies. New modified formulae for the yield and buckling failure conditions based on the formulae suggested by former researchers were proposed. Through analytical studies, the modified formulae were verified to be effective for economic and reasonable design of the inner tubes in a DSCT column under the same confining stress.
ISSN
1598-8198
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/2681
DOI
10.12989/cac.2014.14.5.613
Bibliographic Citation
COMPUTERS AND CONCRETE, v.14, no.5, pp.613 - 633, 2014
Publisher
TECHNO-PRESS
Subject
BEHAVIOR; INNER
Keywords
concrete; concrete structures; concrete-filled hollow steel sections; confined concrete; finite elements method; non-linear analysis
Type
Article
Language
English
Document Type
Article
Publisher
TECHNO-PRESS
Related Researcher
Research Interests

Structural Engineering,Composite Structure,Marine Energy,구조공학,합성구조,해양에너지

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