Punching shear behavior of two-way slabs reinforced with high-strength steel
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Media Type: Article/Story
Article Source: ACI STRUCTURAL JOURNAL Vol 107, no 4 pp. 468 - 475
Series:
Author: YANG, J-M., YOON, Y.-S., COOK, W. D.
Call Number:
Accession Number: 201007468
Publisher: American Concrete Institute, Farmington Hills, MI, United States Publication Date: May - June 2010
Subject:CONCRETE PROPERTIES; FIBRE REINFORCED CONCRETE; UNITED STATES
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. Keywords: cracking; fiber-reinforced concrete; high-strength reinforcement; punching shear; slabs; stiffness
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