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Structural Engineering and Mechanics Volume 88, Number 3, November10 2023 , pages 287-299 DOI: https://doi.org/10.12989/sem.2023.88.3.287 |
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Tests and numerical behavior of circular concrete-filled double skin steel tubular stub columns under eccentric loads |
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Manigandan R. and Manoj Kumar
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| Abstract | ||
| This article describes experimental and numerical analyses of eccentrically loaded over the axially loaded circular concrete filled double-skinned steel tubular (CFDST) short columns. Tests on circular CFDST short columns under eccentric and concentric loading were conducted to assess their responses to the frequent intensity of 5–30 mm at the interval of each 5 mm eccentric loading conditions with constant cross-sectional proportions and width-to-thickness ratios of the outside and internal tubes. The non-linear finite-element analysis of circular CFDST short columns of eccentrically loaded over the axially loaded was performed using the ABAQUS to predict the structural behavior and compare the concentric loading capacity over the various eccentric loading conditions. The comparison outcomes show that the axial compressive strength of the circular CDFST short columns was 2.38–32.86%, lesser than the concentrically loaded short column with the inner circular section. Also, the influence of computer simulation employed is more efficient in forecasting the experimentally examined performance of circular CFDST stub columns. | ||
| Key Words | ||
| composite actions; concrete-filled double skinned steel tubes (CFDST); double tube; eccentric loading; finite element; non-linear analysis | ||
| Address | ||
| Manigandan R.: Department of Civil Engineering, Saveetha School of Engineering, (SIMATS), Chennai, Tamil Nadu, 602 105, India Manoj Kumar: Department of Civil Engineering, Birla Institute of Technology and Science, Pilani (BITS Pilani), Vidya Vihar, Rajasthan 333 301, India | ||