预应力混凝土箱梁结构三维实体有限元计算方法研究

Study of Calculation of PC Box Girder Structure with 3D-FEM

为精确计算分析预应力混凝土箱梁结构,创建了以通用有限元软件为平台的快速三维实体建模方法,提出了预应力结构空间实体分析的等效节点力法;编制了构建箱梁桥结构实体有限元模型的前处理程序。这些方法可为三维实体有限元计算方法在箱梁结构设计验算中推广应用提供有力的支撑。

To calculate PC box-girder structure accurately, this paper used the finite element software as a platform and put forward a method of quick building model for PC box-girder, and then introduced equivalent nodal force method for analyzing the entity of PC box structure in the space.The method is proved a way of direct, detailed and precise in simulating the actual engineering projects.