应变软化岩土材料内扩孔问题解析解

详细信息

ANALYTICAL SOLUTION TO EXPANSION OF CAWITY IN STRAIN-SOFTENING MATERIALS

摘要: 依据试验结果,本文对岩土材料的剪胀和应变软化特性进行了恰当的简化后,利用弹塑性理论和体积平衡原理,推导出能反映岩上体的剪胀和应变软化的岩土体内扩孔问题的全部解析解,讨论了岩土的扩容和剪胀对扩孔结果的影响,并对一些工程现象进行了解释。
- 剪胀 /
- 应变软化 /
- 极限扩孔压力
Abstract: On the basis of experiment resuls, a simplified geomaterial behavior model is given. By using elasto-plastic theory the analytical solution to the expanson of cavities is presented. The solution takes the strain-softening and shear dilation into consideration Through volume-balance equation. the limit expansion pressure and plastic zone are presented in this paper as well. The effect of softening and shear dilation on expansion are examined, It is shown that the results in this paper are in good agreement with other availabe data.
- shear dilation /
- strain-softening /
- limit expansion pressure