岩体三维节点偶对分析及其应用

本文讨论了节点偶对分析的三维扩展。节点偶对分析是针对摩擦滑动节理单元的约束边界进行的序列矢量判定。在三维节理单元的分析中,几何约束和相应的力学判据极为复杂,采用节点偶对等效结合力方法才能迎刃而解。文中对三维转向节理模型的分析得到合理的结果,它表明本文所提出的方法可成功地应用于节理岩体的有限元分析。

NODAL COUPLING ANALYSIS OF THREE-DIMENSIONAL ROCK JOINT MODEL

A three-dimensional extension for nodal coupling analysis is presented in this paper. \ procedure of sequential vector determination of constraint boundary is proposed to analyse the friction-sliding interface element. In "he analysis of three-dimensional joint elements the geometric constraints and relevant mechanical criteria are extremely complex. The problem can be readily solved only by introduing an equivalent binding force between coupled nodes in the analysis. The results of computed displacement of three-dimensional turning joint are proved to be reasonable, showing that the procedure propased in this paper can be successfully applied in advancing the finite element analysis of jointed rock mass.