论文部分内容阅读
研究岩体结构面的力学性质对评价岩体工程的稳定性具有重要意义。根据Patton剪胀公式并结合ABAQUS软件中接触面滑动判定法则推导出定法向刚度下规则锯齿刚性结构面的剪胀公式,同时建立了相应的数值模型,两者计算结果一致。按锯齿倾角和法向刚度建立了16种结构面剪切模型,对各种模型的剪切位移曲线进行了分析,提出了一个参数:变形影响比。结果表明,变形影响比越大,锯齿变形承担的剪切位移越多。根据Seidel和Haberfield的试验建立相应的数值模型,计算结果与试验数据有较好的一致性,验证了ABAQUS在模拟粗糙结构面剪切方面的适用性。
It is very important to study the mechanical properties of rock mass structural plane in evaluating the stability of rock mass engineering. Based on the Patton dilatancy formula and the rule of sliding contact in ABAQUS software, the dilatancy formula of regular saw tooth rigid structure plane under normal stiffness is deduced. At the same time, the corresponding numerical model is established, and the calculated results agree well. According to the angle of serration and the normal stiffness, 16 kinds of structural plane shear models are established, and the shear displacement curves of various models are analyzed. A parameter is proposed: deformation effect ratio. The results show that the greater the deformation-affected ratio, the more shear displacement the serrated deformation will bear. According to the experiments of Seidel and Haberfield, corresponding numerical models are established, and the calculated results are in good agreement with the experimental data. The applicability of ABAQUS in simulating the shear of rough surface is verified.