论文部分内容阅读
论文分为两大部分。第一部分提出了一种数值方法，用来估算节理岩体的REV值。其过程为：首先取不同尺寸的岩体，岩体中的节理位置由Monte－Carlo法确定；然后将这些岩体剖分成有限元网格，对其作数值试验，获取岩体的力学参数；最后分析岩体力学参数与尺寸的关系，从而确定REV值。该法充分考虑了节理网络生成的随机性。第二部分研究无网格伽辽金法（EFGM）。论文在介绍EFGM基本原理的基础上，研究该法用于岩体工程的可行性，比如用该法模拟边坡开挖过程、模拟不连续面、求解接触摩擦问题；并进一步对EPGM作了两点改进，即EFGM对集中力荷载的处理以及EFGM的一种点积分实现形式。
The paper is divided into two parts. The first part proposes a numerical method to estimate the REV value of jointed rock mass. The process is: first take rock bodies of different sizes, the joint position in the rock mass is determined by the Monte-Carlo method; then these rock masses are split into finite element meshes, and numerical tests are carried out to obtain the mechanical parameters of the rock masses; Finally, the relationship between rock mechanical parameters and size is analyzed to determine the REV value. The law fully considers the randomness generated by the joint network. The second part studies the meshless Galerkin method (EFGM). Based on the introduction of the basic principles of EFGM, this paper studies the feasibility of this method for rock mass engineering. For example, it uses this method to simulate the slope excavation process, simulate discontinuous surfaces, and solve contact friction problems; and further developed two methods for EPGM. Point improvement, that is, EFGM’s handling of concentrated force loads and a point-integral implementation of EFGM.