Behaviour of steel-reinforced concrete columns under combined torsion based on ABAQUS FEA

Article

Wu, Linmei, Xiaoluo, Cao and Zhenming, Li. 2020. "Behaviour of steel-reinforced concrete columns under combined torsion based on ABAQUS FEA." Engineering Structures. 209. https://doi.org/10.1016/j.engstruct.2019.109980
Article Title

Behaviour of steel-reinforced concrete columns under combined torsion based on ABAQUS FEA

ERA Journal ID4188
Article CategoryArticle
AuthorsWu, Linmei (Author), Xiaoluo, Cao (Author) and Zhenming, Li (Author)
Journal TitleEngineering Structures
Journal Citation209
Article Number109980
Number of Pages10
Year2020
PublisherElsevier
Place of PublicationUnited Kingdom
ISSN0141-0296
1873-7323
Digital Object Identifier (DOI)https://doi.org/10.1016/j.engstruct.2019.109980
Abstract

A computational model for studying the mechanical performance of steel-concrete columns under combined
torsion is established via ABAQUS. The model is validated by experimental results. Through numerical simulations,
the influence of the axial load ratio, torsion-bending ratio, concrete strength, steel ratio, longitudinal
reinforcement ratio, stirrup ratio, and shear-span ratio on the torsional behaviour of steel-concrete columns is
comprehensively investigated. The initial torsion stiffness and ultimate torsion strength of the column increase with increasing concrete strength and decreasing shear-span ratio. The parameters in descending order of influence on the ultimate torsion strength are steel ratio, torsion-bending ratio, tirrup ratio, longitudinal reinforcement ratio, and axial load ratio. Furthermore, the seven parameters in descending order of influence on the ductility coefficient are the steel ratio, shear-span ratio, concrete strength, axial load ratio, stirrup ratio, torsion-bending ratio and longitudinal reinforcement ratio.

Keywordssteel-concrete composite column; combined torsion; numerical analysis ; torsion stiffness ; torsion strength ; ductility coefficient
ANZSRC Field of Research 2020400510. Structural engineering
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Byline AffiliationsCentre for Future Materials
Suzhou University of Science and Technology, China
Delft University of Technology, Netherlands
Institution of OriginUniversity of Southern Queensland
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