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공과대학
건축도시시스템공학과
Journal papers
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Flexural behavior of U-shaped steel-concrete composite beams under positive bending
Title
Flexural behavior of U-shaped steel-concrete composite beams under positive bending
Authors
Kim C.-G.
;
Kim H.-S.
;
Lee S.-H.
Ewha Authors
김철구
SCOPUS Author ID
김철구
Issue Date
2023
Journal Title
Journal of Constructional Steel Research
ISSN
0143-974X
Citation
Journal of Constructional Steel Research vol. 208
Keywords
Bolt connection
;
Filled composite beam
;
Flexural behavior
;
Positive bending
;
U-shaped steel section
Publisher
Elsevier Ltd
Indexed
SCIE; SCOPUS
Document Type
Article
Abstract
The use of cold-formed U-shaped steel and concrete composite beams has increased with the advantage of permanent steel form as a load-resisting element. In this study, a new type of U-shaped steel-concrete composite beam with a bolt connection was proposed. Four-point flexural tests of full-scale specimens were performed to evaluate the flexural behavior of the composite beams under a positive bending moment. The main test parameters were the types of U-shaped steel sections and location of the neutral axis at ultimate strength. The U-shaped composite beams under positive bending behaved similarly to the composite beams with an I-shaped steel section. The strain compatibility method is recommended to evaluate the positive flexural strength of the composite beams. In addition, the effective flexural rigidity was proposed to capture the increasing trend of the flexural stiffness ratio according to the shear span-to-depth ratio. © 2023 Elsevier Ltd
DOI
10.1016/j.jcsr.2023.108008
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