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本文考虑了板桁组合结构桥面板的局部屈曲，剪力滞后和板桁梁段截面畸变、翘曲、扭转与剪切变形的影响，利用横向有限条带法构造了桥面板板段的局部空间变位模式，提出了板桁梁段有限元法。该方法自由度少，计算精度高，能用于大型板桥组合结构的空间计算。
In this paper, the effects of local buckling, shear lag and cross-section distortion, warpage, torsion and shear deformation of the deck slab are considered, and the local space of the deck slab section is constructed by the transverse finite strip method Displacement mode, the finite element method of plate girder section is proposed. This method has less degree of freedom and high computational accuracy and can be used for space calculation of large-scale slab-bridge composite structures.