陈晓雪, 张丹, 施斌, 王嘉诚, 李博, 季婷媛. 2016: 土石混合体应力松弛试验研究. 工程地质学报, 24(s1): 252-257. DOI: 10.13544/j.cnki.jeg.2016.s1.039
    引用本文: 陈晓雪, 张丹, 施斌, 王嘉诚, 李博, 季婷媛. 2016: 土石混合体应力松弛试验研究. 工程地质学报, 24(s1): 252-257. DOI: 10.13544/j.cnki.jeg.2016.s1.039
    CHEN Xiaoxue, ZHANG Dan, SHI Bin, WANG Jiacheng, LI Bo, JI Tingyuan. 2016: STUDY OF SOIL-ROCK MIXTURE STRESS RELAXATION TEST. JOURNAL OF ENGINEERING GEOLOGY, 24(s1): 252-257. DOI: 10.13544/j.cnki.jeg.2016.s1.039
    Citation: CHEN Xiaoxue, ZHANG Dan, SHI Bin, WANG Jiacheng, LI Bo, JI Tingyuan. 2016: STUDY OF SOIL-ROCK MIXTURE STRESS RELAXATION TEST. JOURNAL OF ENGINEERING GEOLOGY, 24(s1): 252-257. DOI: 10.13544/j.cnki.jeg.2016.s1.039

    土石混合体应力松弛试验研究

    STUDY OF SOIL-ROCK MIXTURE STRESS RELAXATION TEST

    • 摘要: 本文采用应变控制式三轴仪,在分级加载条件下,分别对含石量为20%和30%的土石混合体进行三轴应力松弛试验。根据试验结果,对土石混合体的应力松弛阶段进行了划分,通过对不同含石量试样的应力松弛特征的对比和分析发现:随着初始应力的增加,应力松弛量增大,应力松弛比减小。高含石量的应力松弛量和应力松弛比均较小,即增加含石量可以减小土石混合体的应力衰减。采用Wiechert模型能够较好的描述土石混合体的应力松弛特征,基于该模型的拟合曲线与试验结果较为吻合。

       

      Abstract: The stress relaxation test of soil-rock mixtures of 20%, 30% stone-containing under triaxial compression is carried out on the strain triaxial apparatus by step loading method.According to the results, divide the stress relaxation stage of soil-rock mixtures, the stress relaxation characteristics under different stone containing were analyzed and compared. Studies suggest that, with the increase of axial stress, the stress relaxation increases, the stress relaxation ratio decreases. Wiechertmodel can describe stress relaxation characteristics of soil-rock mixtures, theoretical curves fitting with the experimental curve is very good.

       

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