Consideration on punching shear strength of steel-fiber-reinforced concrete slabs

Hyunjin Ju, Na Rae Cheon, Deuck Hang Lee, Jae Yuel Oh, Jin Ha Hwang, Kang Su Kim

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

The flat plate slab system is widely used in construction fields due to its excellent constructability and savings in story height compared to the conventional beam-column moment-resisting system. Many researchers are, however, concerned about the punching shear failure that can happen in a two-way flat plate slab system, for which many shear-strength-enhancement techniques have been suggested. One of the effective alternatives is the application of steel-fiber-reinforced concrete. However, most previous studies on the punching shear strength of steel-fiber-reinforced concrete flat slabs had presented empirical formulas based on experimental results. On the other hand, theoretical models proposed in previous studies are difficult to be applied to practical situations. Therefore, in this study, a punching shear strength model of the steel-fiber-reinforced concrete two-way flat slab is proposed. In this model, the total shear resistance of the steel-fiber-reinforced concrete flat slab is expressed by sum of the shear contribution of steel fibers in the cracked tension region and that of intact concrete in the compression zone. A total of 91 shear test data on steel-fiberreinforced concrete slab-column connection were compared to the analysis results, and the proposed model provided a good accuracy on estimating the punching shear strength of the steel-fiber-reinforced concrete flat slabs.

Original languageEnglish
Pages (from-to)1-12
Number of pages12
JournalAdvances in Mechanical Engineering
Volume7
Issue number5
DOIs
Publication statusPublished - May 1 2015
Externally publishedYes

Keywords

  • Flat plate
  • Punching
  • Shear strength
  • Slab
  • Steel fiber
  • Steel-fiber-reinforced concrete

ASJC Scopus subject areas

  • Mechanical Engineering

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