薄壁箱梁剪力滞剪切变形双重效应分析的矩阵方法

MATRIX ANALYSIS OF THIN-WALLED BOX GIRDERS WITH BOTH SHEAR LAG AND SHEAR DEFORMATION

摘要: 本文在得到薄壁箱梁同时考虑剪力滞及剪切变形影响微分方程初参数解的基础上,进一步推导出单元刚度矩阵和等效结点荷载,从而使薄壁箱梁势力滞、剪切变形效应分析方法方便地纳入广泛应用的矩阵位移法程序系统,为连续梁等复杂结构的剪力滞及剪切变形效应分析提供了强有力的计算手段。

Abstract: The differential governing equations of thin-walled box girders are established based on the minimum potential energy principle. Both shear lag and shear deformation effect are taken into account in present analysis. Numerical results show that the method proposed in this paper gives accurate solutions with relatively less computational efforts.