One is taper section 3D beam element model, the other is 3D compounding model with solid element and shell element.

• 结果表明，在均布荷载与集中荷载作用下箱梁的剪力滞效应明显不同，对于地震时程反应分析而言，采用变截面三维梁单元模型计算效率较高。