陈鸿宾, 黄翔, 陈学军, 周兴, 胡舒伟. 2017: 硬化性红黏土应力-应变曲线拟合分析. 工程地质学报, 25(s1): 225-229. DOI: 10.13544/j.cnki.jeg.2017.s1.037
    引用本文: 陈鸿宾, 黄翔, 陈学军, 周兴, 胡舒伟. 2017: 硬化性红黏土应力-应变曲线拟合分析. 工程地质学报, 25(s1): 225-229. DOI: 10.13544/j.cnki.jeg.2017.s1.037
    CHEN Hongbin, HUANG Xiang, CHEN Xuejun, ZHOU Xing, HU Shuwei. 2017: FITTING ANALYSIS OF RED CLAY CURVE OF STRAIN HARDENING. JOURNAL OF ENGINEERING GEOLOGY, 25(s1): 225-229. DOI: 10.13544/j.cnki.jeg.2017.s1.037
    Citation: CHEN Hongbin, HUANG Xiang, CHEN Xuejun, ZHOU Xing, HU Shuwei. 2017: FITTING ANALYSIS OF RED CLAY CURVE OF STRAIN HARDENING. JOURNAL OF ENGINEERING GEOLOGY, 25(s1): 225-229. DOI: 10.13544/j.cnki.jeg.2017.s1.037

    硬化性红黏土应力-应变曲线拟合分析

    FITTING ANALYSIS OF RED CLAY CURVE OF STRAIN HARDENING

    • 摘要: 采用TFB-1型应力-应变控制式三轴仪,对红黏土进行饱和固结不排水三轴试验,基于红黏土应力-应变曲线出现硬化性特点,进行本构模型拟合研究,研究结果表明:红黏土应力-应变曲线硬化特性强化拐点位置出现在应变为0.5% ~2%处;应变硬化性红黏土应力-应变特征曲线适用于幂函数模型拟合,但对强化拐点位置不敏感。

       

      Abstract: Using TFB-1 triaxial apparatus of stress and strain control, to the red clay was subjected to saturated consolidation undrained triaxial test, based on the hardening characteristics of the stress-strain curve of red clay, the constitutive model was fitted. The result of the experiment shows that the stress-strain curve of red clay shows hardening property and its strengthening inflection point appears at the strain of 0.5%~2%; strain hardening type red clay should stress and strain characteristic curve for fitting a power function model, but to strengthen the position of the inflection point is not sensitive.

       

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