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有限条法已被应用于箱形梁的分析.此法采用了在纵向满足边界条件(挠曲及平面内)的谐和函数与横向的简单多项式相结合的位移函数.将箱形梁划分为一系列板条,建立一个正交异性板条的挠曲及平面内的刚度矩阵,对任何一种荷载组合都是容易处理的.解出了节线上各种位移以后,板条中任何一点的应力即可算出,而且是计算程序中直接印出的一部分.曾对一座典型的箱形梁桥进行了分析,取得了良好的精确度.
The finite strip method has been applied to the analysis of box girders using a displacement function that combines a harmonic function longitudinally satisfying the boundary conditions (deflection and in-plane) with a simple horizontal polynomial. The box girder is divided into A series of slats, which establish the flexural and in-plane stiffness matrix of an orthotropic slats, are easy to handle for any combination of loads. After solving for the various displacements on the knuckles, any point in the slats Of the stress can be calculated, but also a direct printout of the calculation program has been a typical box girder bridge was analyzed, and achieved good accuracy.