混凝土三维钢筋埋置组合式有限单元模型及其网格自动生成

Three-Dimensional Embedded Finite Element Model of Reinforced Concrete and Its Automatic Mesh Generation

为克服三维钢筋混凝土有限单元模型中网格划分存在的缺陷 ,提出了埋置组合式有限单元模型 .该模型在形成混凝土三维单元时可不考虑钢筋的方位 ,只要给出钢筋的起点与终点的坐标 ,即可自动形成钢筋在组合单元中的信息 .实际应用表明 ,该模型方便可行 ,单元划分效率较高 .

In order to eliminate the shortcomings existing in the mesh generation of three dimensional finite element method of reinforced concrete structures, an embedded finite element model is proposed. In this model concrete elements can be subdivided independently of the directions of reinforcement. The information of reinforcement in embedded elements can be generated automatically after the coordinates of its starting and ending points are inputted. An example shows that this model is applicable and effective.