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中文摘要：
针对翼板沿截面宽度方向变厚度的混凝土箱梁，利用势能变分原理，建立了可以考虑翼板厚度变化的剪滞效应分析通用方法；针对简支梁和悬臂梁等基本结构体系，系统研究了改变翼板厚度变化对正剪力滞效应、负剪力滞效应和剪力滞变形的影响规律。结果表明，翼板厚度变化对箱梁的截面应力和变形均产生影响。考虑翼板厚度变化对计算结果的影响可达15％。
英文摘要：
According to concrete box beam which flanges depth varying along the orientation of cross section, using variational principle of potential energy, new analysis method of shear lag is proposed for single cell concrete box beam. For simply supported girders and cantilever girders, general analysis of varying flange-depths influence on positive and negative shear lag effect and deflection have be done. It＇s shown that varying flange-depths have influence both on sectional stress and deflection. Considering the varying flange-depths have effect on the calculation results of up to 15%.
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