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Performance of the High-Strength Self-Stressing and Self-Compacting Concrete-Filled Steel Tube Columns Subjected to the Uniaxial Compression

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Performance of the High-Strength Self-Stressing and Self-Compacting Concrete-Filled Steel Tube Columns Subjected to the Uniaxial Compression. / Xu, Lihua; Zhou, Penghua; Chi, Yin; Huang, Le; Ye, Jianqiao; Yu, Min.

In: International journal of civil engineering, Vol. 16, No. 9A, 09.2018, p. 1069-1083.

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Xu, Lihua ; Zhou, Penghua ; Chi, Yin ; Huang, Le ; Ye, Jianqiao ; Yu, Min. / Performance of the High-Strength Self-Stressing and Self-Compacting Concrete-Filled Steel Tube Columns Subjected to the Uniaxial Compression. In: International journal of civil engineering. 2018 ; Vol. 16, No. 9A. pp. 1069-1083.

Bibtex

@article{692536de0ee745509666958d47874cff,
title = "Performance of the High-Strength Self-Stressing and Self-Compacting Concrete-Filled Steel Tube Columns Subjected to the Uniaxial Compression",
abstract = "To improve the compactness of concrete and prevent the debonding between steel tube and concrete core, a high-strength self-stressing and self-compacting concrete-filled steel tube (HSS-CFST) column is introduced. This paper deals with an experimental study on the uniaxial compression of HSS-CFST. A total of 51 specimens subjected to axial compression were investigated. Important variables, including self-stress level, concrete strength, tube thickness, and length-to-diameter ratio, were studied. The failure modes, ultimate bearing capacity, and post-peak ductility were analyzed. The results showed that the use of HSS concrete in CFST yielded a better uniaxial compression performance in comparison with the conventional CFST specimens. An increase of 12.4% in ultimate bearing capacity was observed for an HSS-CFST specimen having a self-stress of 5 MPa. The improvement becomes more pronounced as the length-to-diameter ratio increases. Besides, increasing concrete strength can also contribute significantly to the ultimate bearing capacity, while improvement on the post-peak ductility is not obvious. Furthermore, a numerical analysis considering the self-stressing was carried out, which provided good agreement between the experimental results. Finally, predictive equations specially to calculate the ultimate bearing capacity of HSS-CFST columns were proposed and then validated by the experimental results.",
keywords = "Uniaxial compression performance, High strength, Self-stress, Concrete-filled steel tube, SECTION STUB COLUMNS, TUBULAR COLUMNS, EXPERIMENTAL BEHAVIOR, REINFORCED CONCRETE, AXIAL LOAD, CFST, CAPACITY",
author = "Lihua Xu and Penghua Zhou and Yin Chi and Le Huang and Jianqiao Ye and Min Yu",
note = "The final publication is available at Springer via http://dx.doi.org/10.1007/s40999-017-0257-9",
year = "2018",
month = sep
doi = "10.1007/s40999-017-0257-9",
language = "English",
volume = "16",
pages = "1069--1083",
journal = "International journal of civil engineering",
issn = "1735-0522",
publisher = "Springer",
number = "9A",

}

RIS

TY - JOUR

T1 - Performance of the High-Strength Self-Stressing and Self-Compacting Concrete-Filled Steel Tube Columns Subjected to the Uniaxial Compression

AU - Xu, Lihua

AU - Zhou, Penghua

AU - Chi, Yin

AU - Huang, Le

AU - Ye, Jianqiao

AU - Yu, Min

N1 - The final publication is available at Springer via http://dx.doi.org/10.1007/s40999-017-0257-9

PY - 2018/9

Y1 - 2018/9

N2 - To improve the compactness of concrete and prevent the debonding between steel tube and concrete core, a high-strength self-stressing and self-compacting concrete-filled steel tube (HSS-CFST) column is introduced. This paper deals with an experimental study on the uniaxial compression of HSS-CFST. A total of 51 specimens subjected to axial compression were investigated. Important variables, including self-stress level, concrete strength, tube thickness, and length-to-diameter ratio, were studied. The failure modes, ultimate bearing capacity, and post-peak ductility were analyzed. The results showed that the use of HSS concrete in CFST yielded a better uniaxial compression performance in comparison with the conventional CFST specimens. An increase of 12.4% in ultimate bearing capacity was observed for an HSS-CFST specimen having a self-stress of 5 MPa. The improvement becomes more pronounced as the length-to-diameter ratio increases. Besides, increasing concrete strength can also contribute significantly to the ultimate bearing capacity, while improvement on the post-peak ductility is not obvious. Furthermore, a numerical analysis considering the self-stressing was carried out, which provided good agreement between the experimental results. Finally, predictive equations specially to calculate the ultimate bearing capacity of HSS-CFST columns were proposed and then validated by the experimental results.

AB - To improve the compactness of concrete and prevent the debonding between steel tube and concrete core, a high-strength self-stressing and self-compacting concrete-filled steel tube (HSS-CFST) column is introduced. This paper deals with an experimental study on the uniaxial compression of HSS-CFST. A total of 51 specimens subjected to axial compression were investigated. Important variables, including self-stress level, concrete strength, tube thickness, and length-to-diameter ratio, were studied. The failure modes, ultimate bearing capacity, and post-peak ductility were analyzed. The results showed that the use of HSS concrete in CFST yielded a better uniaxial compression performance in comparison with the conventional CFST specimens. An increase of 12.4% in ultimate bearing capacity was observed for an HSS-CFST specimen having a self-stress of 5 MPa. The improvement becomes more pronounced as the length-to-diameter ratio increases. Besides, increasing concrete strength can also contribute significantly to the ultimate bearing capacity, while improvement on the post-peak ductility is not obvious. Furthermore, a numerical analysis considering the self-stressing was carried out, which provided good agreement between the experimental results. Finally, predictive equations specially to calculate the ultimate bearing capacity of HSS-CFST columns were proposed and then validated by the experimental results.

KW - Uniaxial compression performance

KW - High strength

KW - Self-stress

KW - Concrete-filled steel tube

KW - SECTION STUB COLUMNS

KW - TUBULAR COLUMNS

KW - EXPERIMENTAL BEHAVIOR

KW - REINFORCED CONCRETE

KW - AXIAL LOAD

KW - CFST

KW - CAPACITY

U2 - 10.1007/s40999-017-0257-9

DO - 10.1007/s40999-017-0257-9

M3 - Journal article

VL - 16

SP - 1069

EP - 1083

JO - International journal of civil engineering

JF - International journal of civil engineering

SN - 1735-0522

IS - 9A

ER -