Experimental Study on Concrete-Filled Double Skin Circular Steel Tubular Beams under Bending Load

Seung Jo Lee; Jung Min Park

doi:10.4028/www.scientific.net/MSF.995.136

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HomeMaterials Science ForumMaterials Science Forum Vol. 995Experimental Study on Concrete-Filled Double Skin...

Experimental Study on Concrete-Filled Double Skin Circular Steel Tubular Beams under Bending Load

Abstract:

This paper examines the structural and mechanical behavior characteristics of the concrete-filled double circular steel tube (CFDT) fabricated with the installation of shape memory alloys (SMAs) and reinforcement bars in the inner and outer steel tubes, the inner-outer diameter ratio (D_i/D_o), and the concrete strength as the main variables. Towards this end, the displacement ductility, crack patterns, load-central deflection relationship, displacement ductility, and flexural shear strength were compared and analyzed. The results verified that a change in the D_i/D_o has significant effects on the crack pattern, maximum load, and ductility. The specimens with SMAs installed between the inner and outer steel tubes generally showed good results.

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Periodical:

Materials Science Forum (Volume 995)

Pages:

136-142

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.995.136

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Online since:

June 2020

Authors:

Seung Jo Lee*, Jung Min Park

Keywords:

CFDT, Displacement Ductility, Flexural-Shear Strength, Inside-Outside Diameter Ratio

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