摘要
本文提出了节理岩体的三维本构模型、强度理论及破坏概率的表达式。这里把节理岩体视作等效的各向异性连续介质,其具有裂隙张量S_(ifst)和柔度张量C_(ifst)。为了获得本构模型、强度判据及破坏概率,这里引用了能量平衡方程ω=ω_0+ω_c、断裂力学能量判据、岩体节理统计理论及可靠性理论,并引入了剩余剪应力τ_n,有效应力σ_(if)及最可能出现的最大节理半径a_m等概念。这套理论的初步应用是令人满意的。
A three-dimensional constitutive model, a failure criterion and an expression of failure probability for jointed rock masses are developed in the paper. Here rock masses are treated eguivalently as anisotropic continuous media with crack tensor S_(11st) and flexibility tensor C_(11st). In order to of tain the model, the criterion and the probability expression, the energy balance equation w=w_o+w_c, the energ criterion of fracture mechanics, the statistical theory of joint network and the reliability theory are quoted, and the concepts of residual tangent stress ~τn, effective stresses σ_i~* and the biggest radius with maximum probability to occur,a_m, are introduced. The theory developed in this paper is used to analyse rock mass deformation and failure probability at a cultural relic spot near Lianyungang, eastern China.
出处
《水文地质工程地质》
CAS
CSCD
北大核心
1991年第2期7-10,共4页
Hydrogeology & Engineering Geology
基金
国家自然科学基金
