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A platform for research: civil engineering, architecture and urbanism
Structural performance of concrete-filled cold-formed high-strength steel octagonal tubular stub columns
https://orcid.org/0000-0001-7552-8799
Highlights Behaviour of concrete-filled CFHSS octagonal tube stub columns was studied. Stub column tests and numerical modelling were performed for the study. The applicability of existing design approaches was assessed and discussed. A design approach was proposed to accurately estimate the structural strengths.
Abstract This paper presents a comprehensive experimental and numerical study on the structural performance of concrete-filled cold-formed high-strength steel octagonal tubular stub columns. Stub column specimens formed using high-strength steel and infilled concrete with grades C50 and C90, and with three different plate width-to-thickness ratios were tested. The ultimate loads, load-displacement responses and failure modes of the structures were observed and discussed. In addition to the experimental investigations, a finite element model validated using the stub column test results was developed. A series of parametric studies were subsequently conducted to obtain supplementary data for concrete-filled cold-formed high-strength steel octagonal tubular stub columns with a wide range of plate width-to-thickness ratios and different concrete compressive strengths. The applicability of existing design approaches in European and American standards and in literature provided for concrete-filled steel tubular structures with rectangular, circular or octagonal cross-sections were evaluated using the results obtained from the experimental and numerical study. The accuracy of design predictions for concrete-filled cold-formed high-strength steel octagonal tubular stub columns using different design approaches was discussed. A design approach that more accurately incorporates the strength contributions from steel tubes and concrete infill was also proposed for structural design.
Structural performance of concrete-filled cold-formed high-strength steel octagonal tubular stub columns
https://orcid.org/0000-0001-7552-8799
Highlights Behaviour of concrete-filled CFHSS octagonal tube stub columns was studied. Stub column tests and numerical modelling were performed for the study. The applicability of existing design approaches was assessed and discussed. A design approach was proposed to accurately estimate the structural strengths.
Abstract This paper presents a comprehensive experimental and numerical study on the structural performance of concrete-filled cold-formed high-strength steel octagonal tubular stub columns. Stub column specimens formed using high-strength steel and infilled concrete with grades C50 and C90, and with three different plate width-to-thickness ratios were tested. The ultimate loads, load-displacement responses and failure modes of the structures were observed and discussed. In addition to the experimental investigations, a finite element model validated using the stub column test results was developed. A series of parametric studies were subsequently conducted to obtain supplementary data for concrete-filled cold-formed high-strength steel octagonal tubular stub columns with a wide range of plate width-to-thickness ratios and different concrete compressive strengths. The applicability of existing design approaches in European and American standards and in literature provided for concrete-filled steel tubular structures with rectangular, circular or octagonal cross-sections were evaluated using the results obtained from the experimental and numerical study. The accuracy of design predictions for concrete-filled cold-formed high-strength steel octagonal tubular stub columns using different design approaches was discussed. A design approach that more accurately incorporates the strength contributions from steel tubes and concrete infill was also proposed for structural design.
Structural performance of concrete-filled cold-formed high-strength steel octagonal tubular stub columns
https://orcid.org/0000-0001-7552-8799
Highlights Behaviour of concrete-filled CFHSS octagonal tube stub columns was studied. Stub column tests and numerical modelling were performed for the study. The applicability of existing design approaches was assessed and discussed. A design approach was proposed to accurately estimate the structural strengths.
Abstract This paper presents a comprehensive experimental and numerical study on the structural performance of concrete-filled cold-formed high-strength steel octagonal tubular stub columns. Stub column specimens formed using high-strength steel and infilled concrete with grades C50 and C90, and with three different plate width-to-thickness ratios were tested. The ultimate loads, load-displacement responses and failure modes of the structures were observed and discussed. In addition to the experimental investigations, a finite element model validated using the stub column test results was developed. A series of parametric studies were subsequently conducted to obtain supplementary data for concrete-filled cold-formed high-strength steel octagonal tubular stub columns with a wide range of plate width-to-thickness ratios and different concrete compressive strengths. The applicability of existing design approaches in European and American standards and in literature provided for concrete-filled steel tubular structures with rectangular, circular or octagonal cross-sections were evaluated using the results obtained from the experimental and numerical study. The accuracy of design predictions for concrete-filled cold-formed high-strength steel octagonal tubular stub columns using different design approaches was discussed. A design approach that more accurately incorporates the strength contributions from steel tubes and concrete infill was also proposed for structural design.
Structural performance of concrete-filled cold-formed high-strength steel octagonal tubular stub columns
Fang, Han (author) / Chan, Tak-Ming (author) / Young, Ben (author)
Engineering Structures ; 239
2021-03-29
Article (Journal)
Electronic Resource
English
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