Rights statement: This is the author’s version of a work that was accepted for publication in Composite Structures. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Composite Structures, 223, 2019 DOI: 10.1016/j.compstruct.2019.110994
Accepted author manuscript, 1.55 MB, PDF document
Available under license: CC BY-NC-ND
Final published version
Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
}
TY - JOUR
T1 - Fire resistance of concrete-filled steel tube columns with preload.
T2 - Part I: Experimental investigation
AU - Yu, M.
AU - Wang, T.
AU - Huang, W.
AU - Yuan, H.
AU - Ye, J.
N1 - This is the author’s version of a work that was accepted for publication in Composite Structures. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Composite Structures, 223, 2019 DOI: 10.1016/j.compstruct.2019.110994
PY - 2019/9/1
Y1 - 2019/9/1
N2 - Preload in a cast-in-situ concrete-filled steel tube (CFST) structure is an important parameter that has been studied and considered in design and construction. However, the impact of a preload on fire resistance of CFST has not been taken into account in the existing design method of CFST under fire. In this paper, twelve CFST columns with and without preload in the steel tubes are experimentally studied to investigate their heating process, failure modes, thermal and structural responses. The test results show that preload of the steel tube has significant impact on the fire resistance of some of the columns. Further investigations on this important observation will be done numerically in a companion paper [24] to carry out a more comprehensive parametric study.
AB - Preload in a cast-in-situ concrete-filled steel tube (CFST) structure is an important parameter that has been studied and considered in design and construction. However, the impact of a preload on fire resistance of CFST has not been taken into account in the existing design method of CFST under fire. In this paper, twelve CFST columns with and without preload in the steel tubes are experimentally studied to investigate their heating process, failure modes, thermal and structural responses. The test results show that preload of the steel tube has significant impact on the fire resistance of some of the columns. Further investigations on this important observation will be done numerically in a companion paper [24] to carry out a more comprehensive parametric study.
KW - Concrete-filled steel tube (CFST)
KW - Experimental study
KW - Fire resistance
KW - Preload
KW - Concretes
KW - Tubes (components)
KW - Tubular steel structures
KW - Concrete filled steel tube columns
KW - Concrete-filled steel tubes
KW - Design and construction
KW - Experimental investigations
KW - In-situ concrete
KW - Pre loads
KW - Structural response
U2 - 10.1016/j.compstruct.2019.110994
DO - 10.1016/j.compstruct.2019.110994
M3 - Journal article
VL - 223
JO - Composite Structures
JF - Composite Structures
SN - 0263-8223
M1 - 110994
ER -