用边界型最小二乘配点法研究岩石点载荷试样的应力状态

The Investigation of the Stress States in the Point-loaded Rock Specimens by the Boundary Least Square Collocation Method

用解轴对称问题及平面问题的边界型最小二乘配点法系统地分析研究了各种典型岩石点载荷试样内部的应力状态,得到了一些结论并提出了一些看法。给出了一个供试验参考的抗拉强度计算公式。为进一步深入研究不规则试件的点载荷试验提供了一些依据。

The stress states in the various typical point-loaded rock specimens have been systematically investigated with the boundary least square collocation method. Some conclusions are obtained and certain opinions are proposed. A formula to determine the tensile strength as well as the corresponding graph and table its modified coefficient are furnished as a reference to the experiments. These provide evidences for the further through study of the point-load test with irregular specimens.