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采用分块有限元法对钢筋混凝土梁进行非线性分析 ,以得到其荷载—挠度全过程曲线。在分析中 ,提出了设置剪切位移函数以计算剪切变形影响的方法 ,混凝土材料本构关系采用了非均匀强化塑性理论来描述。与别的方法相比 ,具有计算量少 ,数据准备简单等优点。
Nonlinear analysis of reinforced concrete beams is carried out by using the block finite element method to obtain the whole curve of load-deflection. In the analysis, the method of setting shear displacement function is proposed to calculate the influence of shear deformation. The constitutive relation of concrete material is described by the non-uniform strengthening plastic theory. Compared with other methods, it has the advantages of less calculation and simple data preparation.