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首页> 外文期刊>Magazine of Concrete Research >Tangent Poisson's ratio of high-strength concrete in triaxial compression
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Tangent Poisson's ratio of high-strength concrete in triaxial compression

机译：三轴压缩中高强混凝土的切线泊松比

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摘要

Based on a carefully arranged experimental programme, the paper studies the variation of the tangent Poisson s ratio of high-strength concrete with a uniaxial compressive strength of 67 MPa (100 X 200 mm cylinder) under various confining pressures in triaxial compression. It shows that the high lateral confinement can significantly reduce the initial value of the tangent Poisson s ratio as compared with that of the uniaxial compression, and the tangent Poisson's ratio at failure also decreases notably with the increase of the lateral confining pressure. Therefore the tangent Poisson's ratio of high-strength concrete depends on not only the axial stress but also the lateral confinement. A simplified expression based on the experimental results is then proposed to define this variation. The influence of cyclic loading in triaxial compression is also investigated; this shows that the lateral versus axial strain relation of high-strength concrete during the cyclic loading essentially follows the general trend of the monotonic loading.
机译：基于精心安排的实验程序，本文研究了在三轴压缩条件下不同围压下单轴抗压强度为67 MPa（100 X 200 mm圆柱）的高强度混凝土的切线泊松比的变化。结果表明，与单轴压缩相比，较高的侧向约束可以大大减小切线泊松比的初始值，并且随着侧向约束压力的增加，破坏时的切线泊松比也将显着降低。因此，高强度混凝土的切线泊松比不仅取决于轴向应力，还取决于横向约束。然后提出了基于实验结果的简化表达式来定义这种变化。还研究了循环载荷对三轴压缩的影响。这表明，高强度混凝土在循环荷载作用下的横向应变与轴向应变关系基本上遵循单调荷载的总体趋势。

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  • 来源
    《Magazine of Concrete Research》 |2007年第1期|p.69-77|共9页
  • 作者

    X. Lu; C.-T. T. Hsu;

  • 作者单位

    Thornton and Tomasetti Group, 24 Commerce Street, 8th floor, Newark, NJ 07102, USA;

  • 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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