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Effects of fibres and headed bars on the response of concrete corbels.

机译:纤维和有头钢筋对混凝土牛腿响应的影响。

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摘要

Six full-scale reinforced concrete corbel specimens were tested to study the influence of steel and polypropylene fibres, headed bars, and horizontal loading on their responses. The experimentally determined capacities were compared with predictions using simplified and refined strut-and-tie models, with the refined models providing better predictions of the capacities.; The experimental study demonstrated the beneficial use of fibres in reinforced concrete corbels, that is a reduction in the number and the width of cracks at service loads. Headed bars provided excellent anchorage of the main tension tie reinforcement and eliminated the need to weld bearing plates to the reinforcement, as traditionally done in practice. Refined strut-and-tie models provide better predications to the ultimate load capacities.; The improved crack control, using fibre reinforced concrete, and the excellent end anchorage provided by the headed bars provides more durable corbels, suitable for use in parking garage structures.
机译:测试了六个全尺寸钢筋混凝土牛腿标本,以研究钢和聚丙烯纤维,带头钢筋和水平载荷对其响应的影响。将实验确定的容量与使用简化和精炼的“支杆和领带”模型的预测进行比较,精炼的模型可以更好地预测容量。实验研究证明了纤维在钢筋混凝土牛腿中的有益用途,即减少了使用载荷下裂缝的数量和宽度。带头钢筋可以很好地固定主拉紧钢筋,并且无需像传统上在实践中那样将承压板焊接到钢筋上。精致的撑杆和领带模型为最终载荷能力提供了更好的预测。使用纤维增强的混凝土改善的裂缝控制,以及带头钢筋提供的出色的末端锚固性能,使牛腿更加耐用,适用于停车场结构。

著录项

  • 作者

    Alameer, Mohammed.;

  • 作者单位

    McGill University (Canada).;

  • 授予单位 McGill University (Canada).;
  • 学科 Engineering Civil.
  • 学位 M.Eng.
  • 年度 2004
  • 页码 113 p.
  • 总页数 113
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 建筑科学;
  • 关键词

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