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Direct shear strength of high-strength fibre concrete

机译：高强度纤维混凝土的直接剪切强度

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摘要

An experimental and theoretical study of the shear behaviour of steel-fibre-reinforced concrete is presented. Twenty-seven direct shear push-off tests were carried out on high-strength concrete, with and without steel fibre reinforcement. The test series contained uncracked and precracked specimens for the study of the slipping response and the shear stress that can be transferred across an open crack. The test variables were the fibre content and the reinforcement ratio. The test results were compared with information provided by the available codes and other, previous results. The test results indicated that incorporation of steel fibres and bars in concrete members subjected to shear leads to an improved mechanical behaviour before failure. Based on the presented experimental results, an equation governing the direct shear strength is proposed and verified against test results from other test series.
机译：提出了钢纤维混凝土抗剪性能的实验和理论研究。在有或没有钢纤维增强的高强度混凝土上进行了27次直接剪切推力试验。该测试系列包含未开裂和预开裂的试样，用于研究滑移响应和可在整个开裂裂纹上传递的切应力。测试变量是纤维含量和增强比。将测试结果与可用代码和其他先前结果提供的信息进行了比较。试验结果表明，将钢纤维和钢筋掺入受剪切力的混凝土构件中可改善破坏前的机械性能。根据给出的实验结果，提出了控制直接剪切强度的方程，并针对其他测试系列的测试结果进行了验证。

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  • 来源
    《Magazine of Concrete Research》 |2010年第5期|p.379-390|共12页
  • 作者

    L. Ahmed; A. Ansell;

  • 作者单位

    Department of Civil and Architectural Engineering, KTH, SE-100 44 Stockholm, Sweden;

    Department of Civil and Architectural Engineering, KTH, SE-100 44 Stockholm, Sweden;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
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