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Load capacity and failure modes of axially and eccentrically loaded thin-walled steel tubular slender columns filled with concrete
The purpose of this paper is to investigate the load capacity and failure modes of thin-walled steel tubular slender columns filled with concrete under axial and eccentric loads. Different concrete compressive strengths and length/diameter (width) ratios are adopted for the slender columns. The columns are modelled and analysed by the use of the finite element software ABAQUS. The verification study of the three-dimensional nonlinear finite element modelling is carried out using its corresponding experimental test result. In order to establish the verification of the modelling, all specifications of the experimentally tested column are taken into account in the modelling. Comparing obtained results from the modelling and test uncovers that they agree well with each other. Thus, the accuracy of the modelling is demonstrated. Then, the same modelling method is utilised for modelling and analysing developed slender columns. Variables used for the columns include different load eccentricities, cross-sectional shapes, and steel tube thicknesses. Effects of these variables on the load capacity of the columns are examined. It is concluded that increasing the load eccentricity reduces the load capacity of the slender columns. The circular columns perform better than the square and rectangular columns. Also, enhancing the steel tube thickness results in larger load capacity of the columns. Columns with the large load capacity are desirable in terms of their structural performance in projects. Meanwhile, various failure modes of the columns are widely evaluated and discussed.
Load capacity and failure modes of axially and eccentrically loaded thin-walled steel tubular slender columns filled with concrete
The purpose of this paper is to investigate the load capacity and failure modes of thin-walled steel tubular slender columns filled with concrete under axial and eccentric loads. Different concrete compressive strengths and length/diameter (width) ratios are adopted for the slender columns. The columns are modelled and analysed by the use of the finite element software ABAQUS. The verification study of the three-dimensional nonlinear finite element modelling is carried out using its corresponding experimental test result. In order to establish the verification of the modelling, all specifications of the experimentally tested column are taken into account in the modelling. Comparing obtained results from the modelling and test uncovers that they agree well with each other. Thus, the accuracy of the modelling is demonstrated. Then, the same modelling method is utilised for modelling and analysing developed slender columns. Variables used for the columns include different load eccentricities, cross-sectional shapes, and steel tube thicknesses. Effects of these variables on the load capacity of the columns are examined. It is concluded that increasing the load eccentricity reduces the load capacity of the slender columns. The circular columns perform better than the square and rectangular columns. Also, enhancing the steel tube thickness results in larger load capacity of the columns. Columns with the large load capacity are desirable in terms of their structural performance in projects. Meanwhile, various failure modes of the columns are widely evaluated and discussed.
Load capacity and failure modes of axially and eccentrically loaded thin-walled steel tubular slender columns filled with concrete
Bahrami, Alireza (author) / Mahmoudi Kouhi, A. (author)
2020-01-01
International Journal on Emerging Technologies, 0975-8364, 2020, 11:5, s. 517-524
Article (Journal)
Electronic Resource
English
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