TY - JOUR
T1 - Performance of concrete-filled steel tubular column-wall structure subjected to ISO-834 standard fire
T2 - analytical behaviour
AU - Liu, Jia Qi
AU - Han, Lin Hai
AU - Zhao, Xiao Ling
N1 - Funding Information:
This research is part of the project supported by the National Key Project of Science and Technical Supporting Programs Funded by Ministry of Science & Technology of China (No. 2014BAL05B04 ). The financial support is highly appreciated.
Publisher Copyright:
© 2018 Elsevier Ltd
PY - 2018/8
Y1 - 2018/8
N2 - Concrete-filled steel tubular (CFST) column-wall has a promising prospect in the construction field, especially for multi-story residential buildings. It is very important to have a thorough understanding of its mechanical behaviour and fire resistance. This is a companion paper that carries forward the work by the authors [1]. The previous paper focused on full-scale testing to determine the fire resistance of CFST column-wall, whereas this paper deals with finite element analysis and simplified design method for such composite structural elements. Heat transfer mechanism was analysed by comparing the temperature distributions of CFST column-wall sections with different fire exposures. Structural analysis, such as internal force distribution, strain and stress of different components, interfacial behaviour between steel and concrete was given to describe the deformation behaviour and failure mechanism of CFST column-wall. Based on the FEA model, parametric analysis was carried out to investigate the influence of geometric, load and physical parameters on the fire resistance of CFST column-wall. Since no specific design rules can be found for CFST column-walls, a simplified fire design method was proposed in this paper to calculate the fire resistance of CFST column-wall structure.
AB - Concrete-filled steel tubular (CFST) column-wall has a promising prospect in the construction field, especially for multi-story residential buildings. It is very important to have a thorough understanding of its mechanical behaviour and fire resistance. This is a companion paper that carries forward the work by the authors [1]. The previous paper focused on full-scale testing to determine the fire resistance of CFST column-wall, whereas this paper deals with finite element analysis and simplified design method for such composite structural elements. Heat transfer mechanism was analysed by comparing the temperature distributions of CFST column-wall sections with different fire exposures. Structural analysis, such as internal force distribution, strain and stress of different components, interfacial behaviour between steel and concrete was given to describe the deformation behaviour and failure mechanism of CFST column-wall. Based on the FEA model, parametric analysis was carried out to investigate the influence of geometric, load and physical parameters on the fire resistance of CFST column-wall. Since no specific design rules can be found for CFST column-walls, a simplified fire design method was proposed in this paper to calculate the fire resistance of CFST column-wall structure.
KW - Column-wall
KW - Concrete filled steel tubes (CFST)
KW - FEA analysis
KW - Fire resistance
KW - Parametric analysis
KW - Simplified design method
KW - Temperature distribution
UR - http://www.scopus.com/inward/record.url?scp=85054695017&partnerID=8YFLogxK
U2 - 10.1016/j.tws.2018.03.027
DO - 10.1016/j.tws.2018.03.027
M3 - Journal article
AN - SCOPUS:85054695017
SN - 0263-8231
VL - 129
SP - 28
EP - 44
JO - Thin-Walled Structures
JF - Thin-Walled Structures
ER -