中文摘要：

根据含多节理层状岩体典型力学特征,在所提出的考虑一组节理面的层状岩体复合材料模型基础上,建立考虑多组结构面特性的层状岩体多节理本构模型,用来描述其在强度和变形方面的各向异性以及应变硬化-软化特征,进而采用VC＋＋编程语言将该模型嵌入到FLAC3D软件中,实现其非线性数值计算功能。然后,利用所提出的本构模型与三维节理网络模型相结合,初步提出基于连续介质力学理论的合成岩体模型（SRMM）分析方法。基于这些模型理论和分析方法,建立现场真三轴试验岩样的三维合成岩体计算模型,通过与现场试验结果对比,表明所提出的本构模型在描述多节理岩体力学特性方面是可行的、合适的。

英文摘要：

Based on the composite material model of layered rockmass considering a group of rock joints, a multi-joint constitutive model of layered rockmass considering characteristics of multi-group structural plane is proposed according to the mechanical characteristics of joint planes and rock matrix; and the model can be used to describe the anisotropic characteristics of rock strength and deformation, as well as strain hardening-softening characteristics. Then, the proposed model has been successfully established and embedded to fast Lagrangian analysis of continua in 3 dimensions（FLAC3D） by using programming language VC＋＋, realizing its nonlinear numerical calculation. Furthermore, using the combination method of the proposed constitutive model and three-dimensional joint network model, an analysis method of synthetic rockmass model（SRMM） based on the theory of continuum mechanics is initially put forward. Based on the proposed constitutive model and SRMM above, a three-dimensional synthetic rockmass computational model for true triaixal field test is established. The comparison between field tests and numerical simulation results proves that the proposed constitutive model is suitable for the description of the above characteristics of multi-joint rock masses.