International Journal of Steel Structures

, Volume 17, Issue 4, pp 1639–1649 | Cite as

An experimental study on bending performance of Hybrid forming composite beam

  • Sung-Bae Kim
  • Seong-Hyun Cho
  • Young-Han Choi
  • Sang-Seup KimEmail author


The new shape of Hybrid forming beam is a beam that two Z-shaped side plates and bottom plate are connected by high-strength bolt. By adjusting the height of Z-shaped side plate, it can be designed for required resistance and by adjusting the thickness of bottom plate and applying high-strength steel to it, nominal bending moment can be increased. In addition, if concrete is filled inside of the beam during the slab concrete installation process, it becomes the Hybrid forming composite beam which usability and fire resistance are increased. This study suggests the new shape of the Hybrid forming composite beam that applied high-strength steel to the bottom plate and this study acquired the conclusion as the following by the bending test. First, if the existing evaluating formula which evaluates the resistance of the couple moment by the compressive resistance and tensile resistance is applied to evaluating bending resistance of the Hybrid forming composite beam, the ratio of maximum load for the nominal load is more than 1.2 times on average, matches well with the experiment result. Second, if the bending stiffness of the Hybrid forming composite beam is calculated as the effective bending stiffness based on concrete that subjected to compression and steel that subjected to tension, it confirmed to reflect the experimental result well.


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Copyright information

© Korean Society of Steel Construction and Springer-Verlag GmbH Germany, part of Springer Nature 2017

Authors and Affiliations

  • Sung-Bae Kim
    • 1
  • Seong-Hyun Cho
    • 2
  • Young-Han Choi
    • 2
  • Sang-Seup Kim
    • 3
    Email author
  1. 1.The Naeun Structural EngineeringSeoulKorea
  2. 2.Department of Architectural EngineeringKOREATECH.CheonanKorea
  3. 3.School of Design & Architectural EngineeringKOREATECH.CheonanKorea

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