Behaviour of tapered concrete-filled double skin steel tubular (CFDST) stub columns

Wei Li; Qing Xin Ren; Lin Hai Han; Xiao Ling Zhao

doi:10.1016/j.tws.2012.03.019

Behaviour of tapered concrete-filled double skin steel tubular (CFDST) stub columns

Wei Li, Qing Xin Ren, Lin Hai Han, Xiao Ling Zhao

Research output: Journal article publication › Journal article › Academic research › peer-review

147 Citations (Scopus)

Abstract

Recently, tapered concrete-filled double skin steel tubular (CFDST) columns have been applied in electricity transmission towers in China. However, there is still lack of information on the behaviour of such kind of members. This paper thus carried out the investigation on axially loaded tapered CFDST stub columns. The parameters included the tapered angle and the sectional profile. A finite element analysis (FEA) model was developed to predict the behaviour of the tapered member as well. The results showed that the steel tubes and the sandwiched concrete could work together well despite the tapered angle. The failure mode of the tapered CFDST stub column was similar to that of the straight one, and the failure occurred near the smallest section. The confinement effect of the tapered member was discussed by using the stress analysis. Finally, formulas were suggested for the calculation on the ultimate strength of the tapered CFDST stub column.

Original language	English
Pages (from-to)	37-48
Number of pages	12
Journal	Thin-Walled Structures
Volume	57
DOIs	https://doi.org/10.1016/j.tws.2012.03.019
Publication status	Published - Aug 2012
Externally published	Yes

Keywords

Compressive strength
Concrete-filled double skin tubes (CFDST)
Confinement effect
Stub columns
Tapered

ASJC Scopus subject areas

Civil and Structural Engineering
Building and Construction
Mechanical Engineering

More information

10.1016/j.tws.2012.03.019

Cite this

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title = "Behaviour of tapered concrete-filled double skin steel tubular (CFDST) stub columns",

abstract = "Recently, tapered concrete-filled double skin steel tubular (CFDST) columns have been applied in electricity transmission towers in China. However, there is still lack of information on the behaviour of such kind of members. This paper thus carried out the investigation on axially loaded tapered CFDST stub columns. The parameters included the tapered angle and the sectional profile. A finite element analysis (FEA) model was developed to predict the behaviour of the tapered member as well. The results showed that the steel tubes and the sandwiched concrete could work together well despite the tapered angle. The failure mode of the tapered CFDST stub column was similar to that of the straight one, and the failure occurred near the smallest section. The confinement effect of the tapered member was discussed by using the stress analysis. Finally, formulas were suggested for the calculation on the ultimate strength of the tapered CFDST stub column.",

keywords = "Compressive strength, Concrete-filled double skin tubes (CFDST), Confinement effect, Stub columns, Tapered",

author = "Wei Li and Ren, {Qing Xin} and Han, {Lin Hai} and Zhao, {Xiao Ling}",

note = "Funding Information: The research reported in the paper is part of the National Basic Research Program of China (973 Program) (No. 2009CB623200 ) as well as Tsinghua University Initiative Scientific Research Program (No. 2011THZ03 ). The financial support is highly appreciated. The authors also thank Mr. Yin Ye for providing CFDST photos in this paper ( Fig. 1 (a) and (c)). ",

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doi = "10.1016/j.tws.2012.03.019",

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AU - Li, Wei

AU - Ren, Qing Xin

AU - Han, Lin Hai

AU - Zhao, Xiao Ling

N1 - Funding Information: The research reported in the paper is part of the National Basic Research Program of China (973 Program) (No. 2009CB623200 ) as well as Tsinghua University Initiative Scientific Research Program (No. 2011THZ03 ). The financial support is highly appreciated. The authors also thank Mr. Yin Ye for providing CFDST photos in this paper ( Fig. 1 (a) and (c)).

PY - 2012/8

Y1 - 2012/8

N2 - Recently, tapered concrete-filled double skin steel tubular (CFDST) columns have been applied in electricity transmission towers in China. However, there is still lack of information on the behaviour of such kind of members. This paper thus carried out the investigation on axially loaded tapered CFDST stub columns. The parameters included the tapered angle and the sectional profile. A finite element analysis (FEA) model was developed to predict the behaviour of the tapered member as well. The results showed that the steel tubes and the sandwiched concrete could work together well despite the tapered angle. The failure mode of the tapered CFDST stub column was similar to that of the straight one, and the failure occurred near the smallest section. The confinement effect of the tapered member was discussed by using the stress analysis. Finally, formulas were suggested for the calculation on the ultimate strength of the tapered CFDST stub column.

AB - Recently, tapered concrete-filled double skin steel tubular (CFDST) columns have been applied in electricity transmission towers in China. However, there is still lack of information on the behaviour of such kind of members. This paper thus carried out the investigation on axially loaded tapered CFDST stub columns. The parameters included the tapered angle and the sectional profile. A finite element analysis (FEA) model was developed to predict the behaviour of the tapered member as well. The results showed that the steel tubes and the sandwiched concrete could work together well despite the tapered angle. The failure mode of the tapered CFDST stub column was similar to that of the straight one, and the failure occurred near the smallest section. The confinement effect of the tapered member was discussed by using the stress analysis. Finally, formulas were suggested for the calculation on the ultimate strength of the tapered CFDST stub column.

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KW - Concrete-filled double skin tubes (CFDST)

KW - Confinement effect

KW - Stub columns

KW - Tapered

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Behaviour of tapered concrete-filled double skin steel tubular (CFDST) stub columns

Abstract

Keywords

ASJC Scopus subject areas

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