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首页> 外文期刊>Magazine of Concrete Research >Behaviour of concrete beams reinforced with SMA and steel bars under cyclic and monotonic load
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Behaviour of concrete beams reinforced with SMA and steel bars under cyclic and monotonic load

机译：循环和单调荷载下SMA和钢筋混凝土梁的性能

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摘要

This paper presents cyclic and monotonic load test results of concrete flexural members reinforced with shape memory alloy (SMA) and conventional steel bars. The ability of the SMA bars to recover and reduce permanent deformations of concrete flexural members subjected to cyclic load was investigated using reinforced concrete (RC) beam models. Half were control beams, reinforced with conventional steel bars, and the remainder were treated beams, reinforced with both conventional steel and SMA bars. The cyclic load test results showed that there were negligible increments in deflection and the ratio of residual deflection to maximum deflection was almost zero in beams with SMA bars over the whole span. Initially, under lower values of load, the stiffness of the treated beams was slightly higher than that of the control beams, but reduced with an increase in imposed load. The load-deflection behaviours of the treated and control beams were verified using published codes and standards. The results indicate that RC flexural members with SMA and steel provide a better choice for structures subjected to cyclic loads and/or earthquakes.
机译：本文介绍了用形状记忆合金（SMA）和传统钢筋加固的混凝土抗弯构件的循环和单调荷载试验结果。使用钢筋混凝土（RC）梁模型研究了SMA钢筋恢复并减少承受周期性载荷的混凝土挠性构件的永久变形的能力。一半是用传统钢筋加固的控制梁，其余是用传统钢筋和SMA钢筋加固的经过处理的梁。循环载荷测试结果表明，在整个跨度中，带有SMA筋的梁的挠度增量几乎可以忽略不计，残余挠度与最大挠度之比几乎为零。最初，在较低的载荷值下，已处理梁的刚度略高于控制梁，但随着施加载荷的增加而降低。使用已发布的规范和标准验证了处理梁和控制梁的载荷-挠度行为。结果表明，带有SMA和钢的RC挠性构件为承受周期性载荷和/或地震的结构提供了更好的选择。

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  • 来源
    《Magazine of Concrete Research》 |2014年第6期|305-314|共10页
  • 作者

    Swarup R. Debbarma; Showmen Saha;

  • 作者单位

    ISIR-Central Mechanical Engineering Research Institute, Durgapur, India;

    Civil Engineering Department, National Institute of Technology, Durgapur, India;

  • 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
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