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- 저자 : Gazi Algaj Hossain (검색결과 1 건)
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Gazi Algaj Hossain,Khandaker Fariha Ahmed,Soebur Rahman 한국강구조학회 2022 International Journal of Steel Structures Vol.22 No.4
The application of concrete-fi lled stainless steel tubular (CFSST) columns has been increased rapidly in bridges and other infrastructure around the globe due to its greater corrosion resistance, fi re resistance, and durability. This research has investigated the compressive behavior of CFSST columns both experimentally and numerically. An experimental program has been carried out with twenty-four (24) column specimens of six (6) diff erent sizes and shapes with varying concrete strength . A 3D non-linear fi nite element model was developed to validate the experimental result. Besides, an extensive parametric study has been conducted to investigate the eff ect of geometric and material properties. It was observed that the numerical model can predict the experimental result and failure mode with very high accuracy. In general, the failure was occurred due to the outwards buckling of the steel tube. The ductility index decreased with increasing the compressive strength of concrete. The rectangular columns exhibited less ductility index than the square and circular columns. The increase in column axial capacity due to higher concrete strength was more signifi cant for columns having a higher depth to thickness (D/t) ratio. Finally, the axial capacity of the columns was compared with the design standards.
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