箱型梁剪力滞效应求解的样条里兹法

The Spline Ritz Methed in the Analysis ofthe Shear Lag Effect of Box Girders

结合样条函数和里兹法提出薄壁箱形梁剪力滞效应计算的样条里兹法．利用合理假定将三维箱梁弯曲问题简化为一维问题．由于样条函数具有很好的光滑性，因而此方法能以极少的未知量得到较高的精度．

The spline Ritz method was proposed and used to analyse the shear lag effect of box girders. This new kind of methed combined the traditional Ritz methed (or called RayleighRitz method) with spline functions, and has higher accuracy and efficiency.