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Flexural Behavior and Design of Concrete-filled U-shape Hybrid Composite Beams Fabricated from 570MPa High-strength Steel
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 Title & Authors
Flexural Behavior and Design of Concrete-filled U-shape Hybrid Composite Beams Fabricated from 570MPa High-strength Steel
Lee, Cheol Ho; So, Hyun Joon; Park, Chang Hee; Lee, Chang Nam; Lee, Seung Hwan; Oh, Ha Nool;
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 Abstract
Flexural tests of full-scale concrete-filled U-shape hybrid composite beams were conducted. Ordinary (SS400) and high-strength (SM570) steel plates were used in the web and in the bottom flange of U-shape steel section respectively. The primary objectives were to develop the hybrid section configuration with maximized flexural capacity and to investigate its flexural strength and deformation capacity. All the hybrid test specimens in this study exhibited the plastic moment capacity and resonable deformability. It is shown that the plastic stress distribution can be assumed in calculating the flexural strength of the proposed hybrid composite beams if the plastic neural axis is located within 15% of the total beam depth from the top of the composite slab. The procedure for computing the effective flexural stiffness of hybrid composite beams is also recommended based on test results.
 Keywords
Hybrid composite beams;U-shape steel section;High-strength steel;Strain compatibility method;Plastic stress distribution method;Plastic neutral axis;
 Language
Korean
 Cited by
1.
Flexural Capacity of a New Composite Beam with Concrete-Infilled Tubular Lower Flange, Applied Sciences, 2017, 7, 12, 57  crossref(new windwow)
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