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首页> 外文期刊>International Journal of Sustainable Materials and Structural Systems >Cyclic behaviour of cantilever RC columns with steel fibre reinforced concrete at plastic hinge regions
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Cyclic behaviour of cantilever RC columns with steel fibre reinforced concrete at plastic hinge regions

机译：钢纤维混凝土悬臂RC柱在塑性铰区的循环行为。

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摘要

Steel fibre reinforced concrete (SFRC) has been used in a wide range of structural applications to improve the overall behaviour, energy absorption capacity, and damage tolerance of reinforced concrete (RC) members. This study aims at investigating the cyclic behaviour of concrete columns in which SFRC is used only at the expected plastic hinge regions. Three geometrically-similar specimens, namely, one RC and two SFRC columns with fibre content of 0.75% and 1.0%, are tested under the reversed-cyclic lateral loading. The main objectives of this study are to determine the lateral strength, ductility, failure mechanism, and energy dissipation potential of test specimens. The addition of 0.75% steel fibres enhanced the lateral strength of columns by 25%. At the failure state, the RC specimen showed the formation of flexural plastic hinges near the footing. The addition of steel fibres at these locations improved the energy dissipation potential.
机译：钢纤维增强混凝土（SFRC）已被广泛用于各种结构应用中，以改善增强混凝土（RC）构件的整体性能，能量吸收能力和损伤承受能力。这项研究旨在研究仅在预期的塑料铰链区域使用SFRC的混凝土柱的循环行为。在反向循环侧向载荷下测试了三个几何相似的试样，即一根纤维含量为0.75％和1.0％的RC柱和两根SFRC柱。这项研究的主要目的是确定试样的侧向强度，延展性，破坏机理和耗能潜力。添加0.75％的钢纤维可将立柱的侧向强度提高25％。在破坏状态下，钢筋混凝土试样在基脚附近显示出弯曲的塑料铰链。在这些位置添加钢纤维可改善能量消散潜力。

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