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Composite concrete beam with multi-web cold-formed steel section

CHALLENGE JOURNAL OF CONCRETE RESEARCH LETTERS • 2019
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Publication Information
Authors Ahmed Youssef Kamal, Nader Nabih Khalil
Keywords Composite concrete beam; Encased; Multi-web; Cold-formed steel; CFS
Journal CHALLENGE JOURNAL OF CONCRETE RESEARCH LETTERS
Publisher CHALLENGE JOURNAL
Volume 10
Issue 2
Pages 20-33
publication.type International
Paper Link Open Link
Supplementary Materials Not Available
Abstract
Lately, structural engineers use cold-formed steel sections (CFS) in buildings due to its light-weight and easy shaping. Encasing the cold-formed steel sections by con-crete avoiding the structure elements some of its disadvantages especially buckling. This paper reports an experimental test program for beams with a multi-web cold-formed steel section encased by reinforced concrete. Eleven (full-scale) specimens have tested under mid-span concentrated load, the experimental test program de-signed to cover many cold-formed steel section variables such as (web number, web height, and the steel section length). Comparison between the experimental results for specimens with encased steel cold-formed section and that for reference beam have presented. The experimental results show that the cold-formed steel webs num-ber has a noticeable influence on the structural behaviour of the beam, such as in-creasing the beam load capacity. The beam load capacity, failure mode and the beam ductility have analysed, and some preparatory criteria for a sufficient outline have presented.