RocsciencePhase2介绍.ppt

Rocscience Phase2,Finite Element Analysis for Excavations and Slopes,主要内容,RocScience软件介绍 Phase2介绍 Phase2实例演示 Phase2建模流程 分析设定 几何模型 材料定义 边界条件 网格剖分 求解 结果查看 施工过程模拟,Phase2专题 CAD导入 初始地应力场 本构模型 支护结构 节理模型 有限元边坡稳定性分析 渗流分析 孔隙水压力定义 结果解译,RocScience,Rocscience -1996加拿大 2D和3D的分析设计软件 应用领域：土木工程、岩土工程、矿业工程 特点：准确、易用、快速 目标：提高工程的安全性降低设计费用,“Rocscience understands the challenges engineers face - were engineers too. Our seasoned engineer-developer team has advanced degrees in a variety of geotechnical specialties, as well as years of field experience. Weve created software based on leading edge research to help you get your projects done quickly and accurately.”,Phase2 Slide Examine3D Settle3D Unwedge Swedge Rockfall Rocksupport Rockdata Dips Rockplane ExamineTAB CPillar,Rocscience 软件包括以下十三种专业分析软件,开挖和边坡有限元分析软件 二维边坡稳定性分析软件 三维地下开挖边界元分析软件 三维固结沉降分析软件 地下开挖三维楔体稳定性分析软件 岩石边坡楔体稳定性分析软件 陡峭边坡落石统计分析软件 软岩隧洞支护评价软件 岩石、土和不连续体强度分析软件 地质数据的几何学和统计学分析软件 岩质边坡平面楔体滑移稳定性分析软件 片状矿体三维应力分析软件 顶梁稳定性分析软件,Phase2,Phase2 7.0 is a powerful 2D elasto-plastic finite element stress analysis program for underground or surface excavations in rock or soil. It can be used for a wide range of engineering projects and includes support design, finite element slope stability and groundwater seepage analysis.,特点： 轻松、快速实现复杂多工况步模拟分析 丰富的支护结构类型 基于强度折减法的边坡稳定性分析 地下水稳态渗流分析 全面的岩土体本构模型 多种初始地应力场定义方法 ,Phase2软件架构,MODEL COMPUTE INTERPRET,Phase2实例演示,内容：Quick Start Tutorial 目标：认识Phase软件界面，熟悉菜单风格，了解建模流程,Phase2建模流程,分析设定 几何模型 载荷 材料定义 网格剖分 边界条件 求解 结果查看,分析设定Project settings,General,分析类型 求解器类型：默认高斯消元法 求解大规模问题时用共轭梯度法,Stages Stress Analysis Groundwater Strength Reduction Project Summary,模型几何Boundaries,Excavation 闭合的多义线，在分步开挖模拟中，代表开挖最外部的边界，内部的开挖边界用Stage或者Material 边界 External 闭合的多义线，一个模型必须且只能有一个外部边界，定义整个模型分析范围 Material 材料分界线 Stage 定义开挖步界限 Joint 代表岩体内的节理或不连续面，节理边界具有属性（刚度和强度参数） Structural Interface 结构接触面，具有属性 Piezometric Line 代表水位线或水位面，有效应力分析时计算孔隙水压力。当孔隙水压力计算方法是Piezometric Lines时才会用到这一边界,载荷Loading,Field Stress Load Split Load Split is an advanced option which can be used to “split“ the field stress and/or body force loading of the finite elements, between any stages of the model, rather than applying the entire load in the first stage. Seismic Load A pseudo-static seismic (earthquake) load can be applied to the model Distributed Loads The Distributed Load options allow you to add Uniform or Triangular distributed loads to model boundaries. Also, a special option is available for the modeling of loading due to Ponded Water. Line Loads The Line Loads option allows you to apply a concentrated load to any node(s) of the finite element mesh Springs Liner Moments,材料定义Material,Define Material Properties Material physical properties such as unit weight, strength and elastic parameters, are entered in the Define Material Properties dialog. Define Hydraulic Properties If your model considers groundwater pore pressure (e.g. for effective stress analysis), then the hydraulic properties of each material (e.g. piezometric surfaces or hydraulic conductivity) are entered in the Define Hydraulic Properties dialog. Assign Properties Material properties and the excavation staging sequence are assigned to the various regions of your model using the Assign Properties option.,网格剖分Mesh,Discretize Before the mesh is generated the boundaries must first be Discretized. This process subdivides the boundary line segments into discretizations which will form the framework of the finite element mesh Mesh After discretizing, the finite element mesh can be generated. The mesh is based on the discretization of the boundaries, and the mesh and element types selected in the Mesh Setup dialog. Discretize and Mesh Customizing the Mesh Several different options are available for customizing the mesh, which give the user complete control over the discretization and meshing. This includes the following options: Mapped Meshing Mesh Quality The options in the Mesh Quality sub-menu allow you to check the quality of the mesh, and highlight problem areas which may need custom discretization or editing of boundaries to avoid poor quality elements (i.e. long thin elements which can lead to numerical problems).,边界条件Displacements,边界条件类型如下： Restrain XY (i.e. pinned) Restrain X (i.e. free to move in the Y direction only) Restrain Y (i.e. free to move in the X direction only) Free (i.e. free in both X and Y directions) A fixed, non-zero displacement can be applied as a boundary condition using the Set Displacemen