论文部分内容阅读
采用广义Kelvin模型、Burgers模型和六元件黏弹性流变模型,分别对硬性结构面的剪切蠕变曲线进行拟合分析,并对FLAC3D中的interface单元进行修正,提出硬性结构面的剪切流变模型及剪切蠕变试验的数值分析方法。研究结果表明:六元件剪切流变模型适合用于硬性结构面的剪切蠕变特性分析;当结构面的爬坡角小于45°时,剪切蠕变变形会随着爬坡角的增加而增加,而当爬坡角大于45°时,剪切蠕变变形会随着爬坡角的增加而减小;当法向应力不变时,剪切蠕变变形将随着剪切应力的逐渐增加而增加;当切向应力不变时,剪切蠕变变形将随着法向应力的逐渐增加而减小。
Using the generalized Kelvin model, the Burgers model and the six-element viscoelastic rheological model, the shear creep curves of the rigid structure plane are fitted and analyzed respectively. The interface element in FLAC3D is corrected, and the shear flow of the rigid structure plane Variable Model and Numerical Analysis Method of Shear Creep Test. The results show that the six-element shear rheological model is suitable for the analysis of shear creep behavior of rigid structural plane. When the climbing angle of structural plane is less than 45 °, the shear creep deformation will increase with the climbing angle But when the climbing angle is larger than 45 °, the shear creep deformation will decrease with the increase of the climbing angle. When the normal stress is constant, the shear creep deformation will change with the shear stress Gradually increase and increase; when the tangential stress is constant, the shear creep deformation will decrease as the normal stress increases.