黄海峰, 巨能攀, 李路, 肖金武, 李萌, 白洁, 卢向涛. 2018: 基于改进Harris函数的岩石统计损伤软化模型. 工程地质学报, 26(2): 520-527. DOI: 10.13544/j.cnki.jeg.2017-108
    引用本文: 黄海峰, 巨能攀, 李路, 肖金武, 李萌, 白洁, 卢向涛. 2018: 基于改进Harris函数的岩石统计损伤软化模型. 工程地质学报, 26(2): 520-527. DOI: 10.13544/j.cnki.jeg.2017-108
    HUANG Haifeng, JU Nengpan, LI Lu, XIAO Jinwu, LI Meng, BAI Jie, LU Xiangtao. 2018: IMPROVED HARRIS FUNCTION BASED STATISTICAL DAMAGE SOFTENING MODEL FOR ROCKS. JOURNAL OF ENGINEERING GEOLOGY, 26(2): 520-527. DOI: 10.13544/j.cnki.jeg.2017-108
    Citation: HUANG Haifeng, JU Nengpan, LI Lu, XIAO Jinwu, LI Meng, BAI Jie, LU Xiangtao. 2018: IMPROVED HARRIS FUNCTION BASED STATISTICAL DAMAGE SOFTENING MODEL FOR ROCKS. JOURNAL OF ENGINEERING GEOLOGY, 26(2): 520-527. DOI: 10.13544/j.cnki.jeg.2017-108

    基于改进Harris函数的岩石统计损伤软化模型

    IMPROVED HARRIS FUNCTION BASED STATISTICAL DAMAGE SOFTENING MODEL FOR ROCKS

    • 摘要: 为了反映岩石变形全过程,通过改进Harris函数,假设岩石微元强度服从改进的Harris概率密度分布,结合连续损伤理论,考虑损伤变量修正,建立岩石统计损伤软化模型。采用YSJ-01-00岩石三轴流变试验机进行红层泥岩常规三轴压缩试验,基于红层泥岩试验数据对模型参数进行敏感性分析,阐述模型参数的物理意义,分析累积损伤的扩展过程。引用相关文献中二长花岗岩和砂岩的试验数据,利用本文模型对3种岩石材料的试验数据进行辨识验证,给出初始损伤系数的约束范围,对比3种岩石材料的试验曲线和理论曲线,证明本文模型的合理性和适用性。

       

      Abstract: In order to reflect the whole process of rock deformation, the Harris function is improved. The micro-unit strength of rock is supposed to obey the improved Harris probability density distribution. The continuum damage theory is combined and the correction of damage variable is considered. As a result, statistical damage softening model of rock is established. The YSJ-01-00 rock triaxial creep testing machine is used to carry out conventional triaxial compression test of red mudstone. Sensitivity of model parameters is analyzed using test data of red mudstone. The physical meanings of the model parameters are described and the expansion process of cumulative damage is analyzed. Test data of monzonitic granite and sandstone in related literatures are used and the test data of three kinds of rock materials are verified using the model of this paper. Constraint range of initial damage coefficient is given. Finally, the rationality and applicability of the model are proved by comparing the experimental curves and theoretical curves of three kinds of rock materials.

       

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