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首页> 外文期刊>Magazine of Concrete Research >Effect of axial restraint on flexural and shear behaviour of high-strength concrete members
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Effect of axial restraint on flexural and shear behaviour of high-strength concrete members

机译：轴向约束对高强度混凝土构件弯曲和剪切性能的影响

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摘要

This paper was developed to examine the effect of sequential axial restraint on flexural and shear behaviour of high-strength concrete beams. This study includes flexural and shear tests conducted under both restrained and unrestrained conditions to provide a comparison in test results. In the early stage of the tests, the bending stiffness of the fully-restrained beam was lower than that of the unrestrained beam due to a crack generated by tensile restraint during concrete curing. However, as the transverse load increased, the restraint force changed from tension to compression, causing the stiffness to be higher. Even though the displacement capacity of the restrained beam at failure decreased, the yield load and displacement of the restrained beam was higher than that of the unrestrained beam. Additionally, it was observed that shear crack propagation and shear capacity were not affected by cracks less than 0.1 mm in width, which penetrated due to the restraining tensile stress that occurred before loading.
机译：本文旨在研究顺序轴向约束对高强度混凝土梁抗弯和抗剪性能的影响。这项研究包括在约束和无约束条件下进行的弯曲和剪切测试，以提供测试结果的比较。在试验的早期阶段，由于混凝土养护过程中受拉伸约束而产生的裂纹，全约束梁的弯曲刚度低于无约束梁的弯曲刚度。但是，随着横向载荷的增加，约束力从拉伸变为压缩，从而使刚度变高。即使约束梁在破坏时的位移能力降低，约束梁的屈服载荷和位移也比未约束梁的屈服载荷和位移高。另外，观察到剪切裂纹的扩展和剪切能力不受宽度小于0.1 mm的裂纹的影响，宽度小于0.1 mm的裂纹由于在加载之前发生的约束拉伸应力而穿透。

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  • 来源
    《Magazine of Concrete Research》 |2004年第2期|p.63-72|共10页
  • 作者

    E.-I. Yang; S.-T. Yi; Shiro Morita;

  • 作者单位

    Department of Civil Engineering, Kangnung National University, 123, Chibyon-dong, Kangnung-si, Kangwon-do, 210-702, 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 水泥工业;
  • 关键词

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