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.
机构:
College of Civil Engineering, Hunan University, Changsha
Key Laboratory for Wind and Bridge Engineering of Hunan Province, Hunan University, ChangshaCollege of Civil Engineering, Hunan University, Changsha
Fang Z.
Chen J.-X.
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机构:
College of Civil Engineering, Hunan University, ChangshaCollege of Civil Engineering, Hunan University, Changsha
Chen J.-X.
Cao Q.
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h-index: 0
机构:
Guangdong Province Communications Planning & Design Institute Group Co. Ltd., GuangzhouCollege of Civil Engineering, Hunan University, Changsha
Cao Q.
Zhongguo Gonglu Xuebao/China Journal of Highway and Transport,
2021,
34
(08):
: 91
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105