Tests on concrete filled double-skin (CHS outer and SHS inner) composite short columns under axial compression

Mohamed Elchalakani; Xiao Ling Zhao; Raphael Grzebieta

doi:10.1016/S0263-8231(02)00009-5

Tests on concrete filled double-skin (CHS outer and SHS inner) composite short columns under axial compression

Mohamed Elchalakani, Xiao Ling Zhao, Raphael Grzebieta

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

220 Citations (Scopus)

Abstract

This paper presents stub columns tests on concrete-filled double skin sandwich tubes (CFDT) constructed using cold-formed steel tubes. The annulus is filled with micro high-strength concrete having compressive cylinder strength of 64 MPa. The outer skin is made of circular hollow sections (CHS), while the inner skin is made of square hollow sections (SHS). Eight different section sizes were used for the outer skin with diameter-to-thickness ratio ranging from 19 to 55. Three section sizes were chosen for the inner skin with width-to-thickness ratio in the range of 20 to 26. The CFDT construction was found to have significant increase in strength, ductility and energy absorption over the outer jacket. A simplified formula is derived to determine the compressive capacity of CFDT and compared against the current design rules. The proposed formula was found in good agreement with experimental results. This paper also verifies the yield slenderness limit (λ_ey) of 82 specified in AS 4100 for cold-formed CHS stub columns.

Original language	English
Pages (from-to)	415-441
Number of pages	27
Journal	Thin-Walled Structures
Volume	40
Issue number	5
DOIs	https://doi.org/10.1016/S0263-8231(02)00009-5
Publication status	Published - May 2002
Externally published	Yes

Keywords

Cold-formed
Concrete-filled tube
Double-skin
Steel hollow sections

ASJC Scopus subject areas

Civil and Structural Engineering
Building and Construction
Mechanical Engineering

More information

10.1016/S0263-8231(02)00009-5

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title = "Tests on concrete filled double-skin (CHS outer and SHS inner) composite short columns under axial compression",

abstract = "This paper presents stub columns tests on concrete-filled double skin sandwich tubes (CFDT) constructed using cold-formed steel tubes. The annulus is filled with micro high-strength concrete having compressive cylinder strength of 64 MPa. The outer skin is made of circular hollow sections (CHS), while the inner skin is made of square hollow sections (SHS). Eight different section sizes were used for the outer skin with diameter-to-thickness ratio ranging from 19 to 55. Three section sizes were chosen for the inner skin with width-to-thickness ratio in the range of 20 to 26. The CFDT construction was found to have significant increase in strength, ductility and energy absorption over the outer jacket. A simplified formula is derived to determine the compressive capacity of CFDT and compared against the current design rules. The proposed formula was found in good agreement with experimental results. This paper also verifies the yield slenderness limit (λey) of 82 specified in AS 4100 for cold-formed CHS stub columns.",

keywords = "Cold-formed, Concrete-filled tube, Double-skin, Steel hollow sections",

author = "Mohamed Elchalakani and Zhao, {Xiao Ling} and Raphael Grzebieta",

note = "Funding Information: The writers are grateful to the Australian Research Council and Monash University for their financial assistance for the project. Thanks are given to OneSteel for providing the steel tubes. The experiments were carried out in the Civil Engineering Laboratory at Monash University. The technical assistance of Mr Graham Rundle, Mr Roger Doulis and Mr Jeff Doddrell is gratefully acknowledged. ",

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AU - Zhao, Xiao Ling

AU - Grzebieta, Raphael

N1 - Funding Information: The writers are grateful to the Australian Research Council and Monash University for their financial assistance for the project. Thanks are given to OneSteel for providing the steel tubes. The experiments were carried out in the Civil Engineering Laboratory at Monash University. The technical assistance of Mr Graham Rundle, Mr Roger Doulis and Mr Jeff Doddrell is gratefully acknowledged.

PY - 2002/5

Y1 - 2002/5

N2 - This paper presents stub columns tests on concrete-filled double skin sandwich tubes (CFDT) constructed using cold-formed steel tubes. The annulus is filled with micro high-strength concrete having compressive cylinder strength of 64 MPa. The outer skin is made of circular hollow sections (CHS), while the inner skin is made of square hollow sections (SHS). Eight different section sizes were used for the outer skin with diameter-to-thickness ratio ranging from 19 to 55. Three section sizes were chosen for the inner skin with width-to-thickness ratio in the range of 20 to 26. The CFDT construction was found to have significant increase in strength, ductility and energy absorption over the outer jacket. A simplified formula is derived to determine the compressive capacity of CFDT and compared against the current design rules. The proposed formula was found in good agreement with experimental results. This paper also verifies the yield slenderness limit (λey) of 82 specified in AS 4100 for cold-formed CHS stub columns.

AB - This paper presents stub columns tests on concrete-filled double skin sandwich tubes (CFDT) constructed using cold-formed steel tubes. The annulus is filled with micro high-strength concrete having compressive cylinder strength of 64 MPa. The outer skin is made of circular hollow sections (CHS), while the inner skin is made of square hollow sections (SHS). Eight different section sizes were used for the outer skin with diameter-to-thickness ratio ranging from 19 to 55. Three section sizes were chosen for the inner skin with width-to-thickness ratio in the range of 20 to 26. The CFDT construction was found to have significant increase in strength, ductility and energy absorption over the outer jacket. A simplified formula is derived to determine the compressive capacity of CFDT and compared against the current design rules. The proposed formula was found in good agreement with experimental results. This paper also verifies the yield slenderness limit (λey) of 82 specified in AS 4100 for cold-formed CHS stub columns.

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KW - Steel hollow sections

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Tests on concrete filled double-skin (CHS outer and SHS inner) composite short columns under axial compression

Abstract

Keywords

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