Behaviour of high-strength CFDST chord to CHS brace T-joint: Experiment

Wei Li; Yu Feng Cheng; Di Wang; Lin Hai Han; Xiao Ling Zhao

doi:10.1016/j.engstruct.2020.110780

Behaviour of high-strength CFDST chord to CHS brace T-joint: Experiment

Wei Li, Yu Feng Cheng, Di Wang, Lin Hai Han, Xiao Ling Zhao

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

16 Citations (Scopus)

Abstract

This paper presents an experimental investigation on the fatigue behaviour of composite T-joints which consisted of circular concrete-filled double-skin steel tubular (CFDST) chord and circular hollow section (CHS) brace, with the high-strength steel used in the chord. The test parameters included the brace to chord diameter ratio, the hollow ratio of the chord and the load range. The brace was subjected to repeated cyclic tension and the development of cracks in test specimens were recorded. The measured fatigue lives were compared with predicted ones using current codes of practice. It is found that the fatigue life of CFDST T-joint was underestimated according to codes for hollow section steel T-joints or joints who have grout between annulus of chord.

Original language	English
Article number	110780
Journal	Engineering Structures
Volume	219
DOIs	https://doi.org/10.1016/j.engstruct.2020.110780
Publication status	Published - 15 Sept 2020
Externally published	Yes

Keywords

Concrete-filled double-skin steel tube
Experimental investigation
Fatigue behaviour
High-strength steel
T-joint

ASJC Scopus subject areas

Civil and Structural Engineering

More information

10.1016/j.engstruct.2020.110780

Cite this

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title = "Behaviour of high-strength CFDST chord to CHS brace T-joint: Experiment",

abstract = "This paper presents an experimental investigation on the fatigue behaviour of composite T-joints which consisted of circular concrete-filled double-skin steel tubular (CFDST) chord and circular hollow section (CHS) brace, with the high-strength steel used in the chord. The test parameters included the brace to chord diameter ratio, the hollow ratio of the chord and the load range. The brace was subjected to repeated cyclic tension and the development of cracks in test specimens were recorded. The measured fatigue lives were compared with predicted ones using current codes of practice. It is found that the fatigue life of CFDST T-joint was underestimated according to codes for hollow section steel T-joints or joints who have grout between annulus of chord.",

keywords = "Concrete-filled double-skin steel tube, Experimental investigation, Fatigue behaviour, High-strength steel, T-joint",

author = "Wei Li and Cheng, {Yu Feng} and Di Wang and Han, {Lin Hai} and Zhao, {Xiao Ling}",

note = "Funding Information: The authors gratefully acknowledge the Beijing Natural Science Foundation Program (No. 8182028 ) for financial support. Funding Information: The authors gratefully acknowledge the Beijing Natural Science Foundation Program (No. 8182028) for financial support. Publisher Copyright: {\textcopyright} 2020 Elsevier Ltd",

year = "2020",

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doi = "10.1016/j.engstruct.2020.110780",

language = "English",

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T2 - Experiment

AU - Li, Wei

AU - Cheng, Yu Feng

AU - Wang, Di

AU - Han, Lin Hai

AU - Zhao, Xiao Ling

N1 - Funding Information: The authors gratefully acknowledge the Beijing Natural Science Foundation Program (No. 8182028 ) for financial support. Funding Information: The authors gratefully acknowledge the Beijing Natural Science Foundation Program (No. 8182028) for financial support. Publisher Copyright: © 2020 Elsevier Ltd

PY - 2020/9/15

Y1 - 2020/9/15

N2 - This paper presents an experimental investigation on the fatigue behaviour of composite T-joints which consisted of circular concrete-filled double-skin steel tubular (CFDST) chord and circular hollow section (CHS) brace, with the high-strength steel used in the chord. The test parameters included the brace to chord diameter ratio, the hollow ratio of the chord and the load range. The brace was subjected to repeated cyclic tension and the development of cracks in test specimens were recorded. The measured fatigue lives were compared with predicted ones using current codes of practice. It is found that the fatigue life of CFDST T-joint was underestimated according to codes for hollow section steel T-joints or joints who have grout between annulus of chord.

AB - This paper presents an experimental investigation on the fatigue behaviour of composite T-joints which consisted of circular concrete-filled double-skin steel tubular (CFDST) chord and circular hollow section (CHS) brace, with the high-strength steel used in the chord. The test parameters included the brace to chord diameter ratio, the hollow ratio of the chord and the load range. The brace was subjected to repeated cyclic tension and the development of cracks in test specimens were recorded. The measured fatigue lives were compared with predicted ones using current codes of practice. It is found that the fatigue life of CFDST T-joint was underestimated according to codes for hollow section steel T-joints or joints who have grout between annulus of chord.

KW - Concrete-filled double-skin steel tube

KW - Experimental investigation

KW - Fatigue behaviour

KW - High-strength steel

KW - T-joint

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JO - Engineering Structures

JF - Engineering Structures

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Behaviour of high-strength CFDST chord to CHS brace T-joint: Experiment

Abstract

Keywords

ASJC Scopus subject areas

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