Bending Performance Evaluation of Hybrid Composite Beam with Low Depth and New Shape

Kim, Sung‐Bae; Cho, Seong Hyun; Oh, Kwang Soo; Jeon, Yong Han; Choi, Young Han; Kim, Sang Seup

doi:10.7781/kjoss.2016.28.3.151

Cited by 5 publications

(1 citation statement)

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“…Lee et al [9,10] developed a similar composite beam utilizing high-strength steel for the improvement of its flexural and seismic capacity. Kim et al [11,12] developed a new composite beam that includes bolted cold-formed steel components and steel rebars for improved bending strength. This study proposes a new steel-concrete composite beam system with tubular lower flange illustrated in Figure 1.…”

Section: Introductionmentioning

confidence: 99%

Flexural Capacity of a New Composite Beam with Concrete-Infilled Tubular Lower Flange

Cho

Lee

Kim³

et al. 2017

Applied Sciences

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This paper proposes a new steel concrete composite beam that has a similar shape to the conventional steel wide flange beam, but whose lower flange has a tubular shape with infilled concrete. It has openings in the web for perfect integration between concrete and steel materials, and the tubular lower flange is reinforced with steel rebars to enhance its flexural strength. The bending capacity of the new composite beam was investigated by performing a two-point loading test on seven specimens, which can be categorized mainly into two types, non-composite and fully composite specimens. The load versus displacement curves were plotted for all the specimens and their failure modes were identified. Theoretical equations were proposed to estimate the flexural strength of the new composite beam members, and their accuracy was examined by comparing the predictions of the equations with the test results.

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Section: Introductionmentioning

confidence: 99%

Flexural Capacity of a New Composite Beam with Concrete-Infilled Tubular Lower Flange

Cho

Lee

Kim³

et al. 2017

Applied Sciences

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Experimental study on shear performance of composite beam using lipped channels

Lee,

Bae,

Lee

et al. 2024

Structures

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Experimental Study on the Flexural Performance of Composite Beams with Lipped Channels

Lee,

Bae,

Kim

et al. 2024

Materials

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This study conducted experiments to investigate the flexural behavior of steel–concrete composite beams with U-shaped sections, utilizing cold-formed lipped channels as web components. To enhance both flexural and shear performance, trapezoidal plates were added to the lower sides of the composite beams. A total of ten specimens were fabricated, with variables defined according to the following criteria: presence of bottom tension reinforcement and bottom studs, thickness of the trapezoidal side plates (6 mm and 8 mm), and the welding method. Four-point bending tests were conducted, and all specimens exhibited typical flexural failure at the ultimate state. Specimens with bottom tension reinforcement, specifically those in the H5-T6 and H5-T8 series, demonstrated increases in ultimate load of 28.8% and 33.5%, respectively, compared to specimens without tension reinforcement. The use of lipped channels enabled full composite action between the concrete and the steel web components, eliminating the need for stud anchors. Additionally, it was confirmed that the plastic neutral axis, reflecting the material test strengths, was located within the concrete slab as intended. This study also compared the design flexural strengths, calculated using the yield stress distribution method from structural steel design standards such as AISC 360 and KDS 14, with the experimental flexural strengths. The comparison was used to evaluate the applicability of current design standards.

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Bending Performance Evaluation of Hybrid Composite Beam with Low Depth and New Shape

Cited by 5 publications

References 0 publications

Flexural Capacity of a New Composite Beam with Concrete-Infilled Tubular Lower Flange

Flexural Capacity of a New Composite Beam with Concrete-Infilled Tubular Lower Flange

Experimental study on shear performance of composite beam using lipped channels

Experimental Study on the Flexural Performance of Composite Beams with Lipped Channels

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