Punching Shear Resistance of High Strength Concrete Flat Slabs Reinforced with Steel Fibers and Transverse Reinforcement

SP-179: Fourth CANMET/ACI/JCI Conference: Advances in Concrete Technology Pub Date : 1900-01-01 DOI:10.14359/6054

J. B. Hanai, Enz Vargas

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引用次数: 1

Abstract

The paper presents the results of an investigation about the behavior of reinforced concrete flat slabs made with high strength concrete, steel fibers and ordinary shear reinforcement. We tested twelve flat slabs made with different combinations of high strength concrete, ordinary strength concrete, shear reinforcement and steel fiber volume fraction (0%, 0.75% and 1.5%). The square-shaped slabs were designed to represent the slab-column connection in an interior column. A significant increase in the punching shear strength was observed, due to the use of high strength concrete and the addition of steel fibers. The combination of high strength concrete with 1.5% fiber volume fraction and shear reinforcement provided twice the punching shear resistance of an ordinary strength concrete slab without shear reinforcement and without fibers. Fiber addition is believed to be responsible for an increase of approximately 50% in the resistance and also for an increase in ductility. Comparisons with theoretical code provisions, including CEB/90, ACI-318/89 and Eurocode 2, are presented.

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钢纤维加横向配筋高强混凝土平板抗冲剪性能研究

本文介绍了用高强混凝土、钢纤维和普通抗剪钢筋制成的钢筋混凝土平板的性能研究结果。我们测试了12块由高强混凝土、普通强度混凝土、抗剪钢筋和钢纤维体积分数(0%、0.75%和1.5%)不同组合制成的平板。方形板的设计是为了代表内部柱的板柱连接。由于使用高强度混凝土和添加钢纤维，观察到冲孔抗剪强度显著增加。1.5%纤维体积分数的高强混凝土与抗剪钢筋的组合，其抗冲剪能力是普通强度无抗剪钢筋和无纤维混凝土板的两倍。纤维的添加被认为是负责增加约50%的阻力，也增加了延展性。并与CEB/90、ACI-318/89和欧洲法规2等理论法规进行了比较。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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SP-179: Fourth CANMET/ACI/JCI Conference: Advances in Concrete Technology

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