剪切变形的影响使得箱形梁的翼板中出现应力不均匀现象，尤其是悬臂箱形梁剪力滞现象。
The influence of shearing deformation causes the non-uniform stress in the wing plate of the box girder, especially the cantilever box girder.
就悬臂梁的负剪力滞现象进行理论分析和推导，并结合实际算例来对悬臂梁负剪力滞现象进行参数分析。
The negative shear lag effect of the cantilever and continuous girders is studied and the parameters which influence the shear lag effect is analysed.
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