Shear Resistance of a Biaxial Hollow Composite Floor System with GFRP Plates

Jaeho Ryu, Chang Hwan Lee, Jintak Oh, Sung Won Yoon, Young-Kyu Ju

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

A new composite floor system was developed to reduce floor-to-floor height and to improve structural capacity and fire resistance as compared with existing encased composite floor systems. The proposed system is composed of asymmetric steel beams with web openings, a biaxial hollow concrete slab, and glass fiber-reinforced plastic (GFRP) plates. The shear resistance of the typical composite beams is commonly determined based on the shear strength of the steel web alone. However, for the proposed system, because the steel web has several circular openings, the concrete contribution to the shear resistance should be included in the design equation. In this paper, tests and finite-element analyses were conducted to evaluate the contribution of the shear-resisting components in the proposed system. An asymmetric steel beam with web openings, inner concrete panels, and a biaxial hollow concrete slab within the effective width for shear were considered as shear-resisting components. Each component fully resisted the applied shear force, exceeding the expected value until failure, and the design equation suggested was suitable for predicting the shear strength of the proposed system.

Original languageEnglish
Article number04016180
JournalJournal of Structural Engineering (United States)
Volume143
Issue number2
DOIs
Publication statusPublished - 2017 Feb 1

Keywords

  • Biaxial hollow concrete slab
  • Composite beam
  • Composite floor
  • Glass fiber-reinforced plastic (GFRP) plate
  • Metal and composite structures
  • Reduced story height
  • Shear capacity

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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