【摘要】 讨论了用有限元法进行预应力混凝土箱梁节段非线性分析的方法。在杆系结构分析的基础上,选取箱梁节段,采用三维体单元进行有限元分析,探讨了单元类型选择、网格划分、材料模型描述、节段边界条件选取、非线性求解方法等问题。并通过具体实例分析,证明了方法的有效性。更多还原

【Abstract】 In this paper the authors discuss the nonlinear analysis method of PC part-box girder with finite element. Based on the structural analysis of the shaft system, the authors carry through FE analysis (adopting) three-dimensional body element for selected part-box girder. And it is discussed how to select (element) type, to (measure) off gridding, to describe the material model, to choose boundary condition of part-model and to find (nonlinear) solving means etc. And through analyzing an example, the authors verify its validity.更多还原