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- W3025167678 abstract "The axial compressive experiments were carried out on 21 welded composite T-shaped concrete-filled steel tubular columns, and 395 finite element models were established for parameter calculation. The calculating formula of axial compressive bearing capacity of welded composite T-shaped concrete-filled steel tubular columns is established. The results show that three typical failure modes were found: middle buckling, end local buckling, and integral bending. When the slenderness ratio λ exceeds the elastic instability limit λ p , the axial stress of steel is lower than yield strength f y , and the axial stress of core concrete is lower than axial compressive strength f c . Increasing the thickness of steel has a more obvious effect on increasing the axial compressive bearing capacity of specimen. The theoretical calculating formula can effectively predict the axial compressive bearing capacity, and the theoretical calculation is partial to safety. The average ratio of axial compressive bearing capacity of the theoretical calculation to the experimental is 0.909, and the standard deviation is 0.075. The average ratio of axial compressive bearing capacity of the finite element calculation to the experimental is 0.957, and the standard deviation is 0.045. The average ratio of axial compressive bearing capacity of the theoretical calculation to the finite element calculation is 0.951, and the standard deviation is 0.039." @default.
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- W3025167678 date "2020-05-01" @default.
- W3025167678 modified "2023-10-12" @default.
- W3025167678 title "Bearing capacity of welded composite T-shaped concrete-filled steel tubular columns under axial compression" @default.
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- W3025167678 doi "https://doi.org/10.1177/1687814020923102" @default.
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