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Ductile corrosion-free GFRP-stainless steel reinforced concrete elements

机译：球墨铸铁，无腐蚀，GFRP，不锈钢

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摘要

Corrosion of steel rebars is known to cause deterioration of concrete structures that can lead to catastrophic failures. To mitigate this problem, steel rebars can be replaced with Glass Fiber-Reinforced Polymer (GFRP) rebars. However, the lack of ductility of GFRP-reinforced elements has prevented their use in many structural applications, especially in seismic areas. Stainless Steel (SS) rebars are corrosion resistant and have adequate energy absorption and ductility. However, they are much more expensive than steel rebars. This paper proposes the combined use of SS and GFRP rebars to achieve ductile and corrosion-free elements. The first challenge for such a proposal relates to designing SS-GFRP reinforced concrete frame with adequate lateral performance in terms of initial stiffness, ductility, and strength. Design equations, which are based on a comprehensive parametric study, are developed to allow designing such a frame. A six-storey concrete frame is then designed using the proposed equations and its lateral performance is examined using pushover analysis.
机译：众所周知，钢筋的腐蚀会导致混凝土结构变质，从而导致灾难性的故障。为了缓解此问题，可以将钢钢筋替换为玻璃纤维增​​强聚合物（GFRP）钢筋。但是，由于GFRP增强元件缺乏延展性，因此无法在许多结构应用中使用它们，尤其是在地震地区。不锈钢（SS）钢筋耐腐蚀并且具有足够的能量吸收和延展性。但是，它们比钢筋要贵得多。本文提出了SS和GFRP钢筋的组合使用，以实现韧性和无腐蚀元素。这项建议的第一个挑战涉及设计SS-GFRP钢筋混凝土框架，该框架在初始刚度，延展性和强度方面具有足够的侧向性能。开发了基于全面参数研究的设计方程式，以允许设计这样的框架。然后使用提出的方程式设计六层混凝土框架，并使用推覆分析检查其横向性能。

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  • 来源
    《Composite Structures》 |2017年第12期|124-131|共8页
  • 作者

    Youssef Maged A.; Meshaly Mohamed E.; Elansary Ahmed A.;

  • 作者单位

    Western Univ, Civil & Environm Engn, London, ON N6A 5B9, Canada;

    Western Univ, Civil & Environm Engn, London, ON N6A 5B9, Canada|Alexandria Univ, Dept Struct Engn, Alexandria, Egypt;

    Western Univ, Civil & Environm Engn, London, ON N6A 5B9, Canada|Cairo Univ, Dept Struct Engn, Giza, Egypt;

  • 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
  • 关键词

    Concrete; Beams; Columns; Frames; GFRP; SS; Pushover;

    机译：混凝土;梁;柱;框架;GFRP;SS;推挤;

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