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Punching Shear Behavior of Two-Way Slabs Reinforced with High-Strength Steel
- Issue Date
- 7월-2010
- Publisher
- AMER CONCRETE INST
- Keywords
- cracking; fiber-reinforced concrete; high-strength reinforcement; punching shear; slabs; stiffness
- Citation
- ACI STRUCTURAL JOURNAL, v.107, no.4, pp.468 - 475
- Indexed
- SCIE
SCOPUS
- Journal Title
- ACI STRUCTURAL JOURNAL
- Volume
- 107
- Number
- 4
- Start Page
- 468
- End Page
- 475
- ISSN
- 0889-3241
- Abstract
- The punching shear behavior of slabs reinforced with high-strength steel reinforcement was studied and compared with that of slabs reinforced with conventional steel reinforcement. The high-strength steel selected for this research conforms to ASTM A1035-07. The influences of the flexural reinforcement ratio, concentrating the reinforcement in the immediate column region, and using steel fiber-reinforced concrete (SFRC) in the slab on the punching shear resistance, post-cracking stiffness, strain distribution, and crack control were investigated. In addition, the test results were compared with the predictions using various design codes. The use of high-strength steel reinforcement and SFRC increased the punching shear strength of slabs, and concentrating the top mat of flexural reinforcement showed beneficial effects on post-cracking stiffness, strain distribution, and crack control.
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