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首页> 外文会议>SEM IX International Congress on Experimental Mechanics June 5-8, 2000 Orlando, Florida >Stress-strain curves of concrete obtained by different control methods
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Stress-strain curves of concrete obtained by different control methods

机译：不同控制方法获得的混凝土应力-应变曲线

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摘要

The stress-strain relationships of high-strength concrete under uniaxial compression have been investigated by using either axial strain or circumferential strain as control signal. The stress-strain curves obtained by axial or circumferential strain control are compared to each other and their differences studied. It was found that the latter control method is much more stable and could be used to obtain the complete stress-strain curves of high-strength concrete, including the descending branch. Moreover, based on test data obtained by circumferential control, an empirical equation is presented to generate the complete stress-strain relationship of high-strength concrete in compression. The empirical equation has been found to give a good representation of the test data.
机译：利用轴向应变或周向应变作为控制信号，研究了高强度混凝土在单轴压缩下的应力-应变关系。比较了通过轴向或周向应变控制获得的应力-应变曲线，并研究了它们之间的差异。结果发现，后一种控制方法更加稳定，可用于获得包括下降分支在内的高强度混凝土的完整应力-应变曲线。此外，基于通过圆周控制获得的试验数据，提出了一个经验方程式，以生成压缩状态下高强度混凝土的完整应力-应变关系。已经发现经验方程可以很好地表示测试数据。

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