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首页> 外文期刊>Magazine of Concrete Research >Structural behaviour of reinforced concrete beams with high yield strength stirrups
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Structural behaviour of reinforced concrete beams with high yield strength stirrups

机译：高屈服强度箍筋的钢筋混凝土梁的结构性能

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摘要

Primary national codes and standards for reinforced concrete (RC) members and structures specify a limit value of stirrup yield strength. The salient reason for this restriction is to control diagonal crack widths, which lead to shear tension failure. The influence of a high yield strength of stirrups on the failure mode of such members is thus of great concern. To investigate this issue, 12 RC beam specimens incorporating stirrups with high yield strength were tested. The test variables employed in the study were three levels of stirrup spacing and four levels of stirrup yield strength. Assessment of the test results was conducted by analysing the variation of both spacing and number of diagonal cracks due to an increment in the total amount of stirrups. An evaluation of diagonal crack width measured under the service load level was also performed. The test results showed that the diagonal crack width under the service load level is affected by the yield strength of the stirrups and the stirrup spacing. In addition, the number of diagonal cracks increased and the spacing of the cracks reduced as the amount of stirrups was increased. Overall, the average diagonal crack width of all the specimens incorporating high yield strength stirrups was less than the 0.41 mm recommended in ACI 224R-01.
机译：钢筋混凝土（RC）构件和结构的主要国家法规和标准规定了箍筋屈服强度的极限值。该限制的显着原因是控制对角裂纹宽度，这导致剪切张力失效。因此，箍筋的高屈服强度对这种构件的破坏模式的影响是非常令人关注的。为了研究这个问题，测试了12个带有高屈服强度的箍筋的RC梁样本。研究中使用的测试变量是箍筋间距的三个级别和箍筋屈服强度的四个级别。通过分析由于箍筋总量的增加而引起的对角线裂纹的间距和数量的变化，对测试结果进行评估。还对在使用载荷水平下测得的对角裂缝宽度进行了评估。试验结果表明，在工作载荷水平下的对角裂纹宽度受箍筋的屈服强度和箍筋间距的影响。另外，随着箍筋数量的增加，对角裂纹的数量增加并且裂纹的间距减小。总体而言，所有包含高屈服强度箍筋的试样的平均对角裂纹宽度均小于ACI 224R-01中建议的0.41 mm。

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  • 来源
    《Magazine of Concrete Research》 |2016年第24期|1187-1199|共13页
  • 作者

    Lee Jung-Yoon; Choi Seong-Ho; Lee Do Hyung;

  • 作者单位

    Sungkyunkwan Univ, Dept Civil Architectural & Environm Syst Engn, Suwon, South Korea;

    Samsung C&T, Engn & Construct Grp, Seoul, South Korea;

    Paichai Univ, Dept Civil Environm & Railrd Engn, Daejeon, South Korea;

  • 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

    beams girders; cracks cracking; shear;

    机译：梁和大梁;裂缝和裂缝;剪切;

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