刚构一连续组合单箱室桥剪力滞效应分析

为了分析刚构一连续组合单箱室桥的剪力滞效应，以三股线刚构一连续组合桥为工程背景，利用空间有限元程序ANSYS建立箱梁空间网格模型，通过模型对剪力滞效应进行分析，最终得出空间网格法可以很好地分析刚构一连续单箱梁桥的成桥跨中、支点剪力滞效应；箱梁的剪力滞效应为：顶板的剪力滞效应较底扳显著；剪力滞效应沿纵向是变化的，总体上边跨截面的剪力滞比跨中截面要突出，相关结论可为同类桥梁的设计和加固提供参考。

Rigid Framework- Analysis on the Shearing Force Lag Effects of Continuously Combined Single Case Bridge

To analysis the shearing force lag effects of continuously combined single case bridges, compenzine rigid framework -continuously combined single case bridge is taken as engineering background. The space frame lattice model of the box girder is built up with finite element program. Through the analysis on the shearing force lag effect of the model, space grid method is proved to be the best way to analyze the shearing force lag of the midspan and fulcrum of rigid framework - continuously combined single case bridge. The shearing force lag of the box girder should be： the shearing force lag effect of the top board is stronger than that of baseboard; it changes in vertical direction; the shearing force lag effect of the top sidespan section is stronger than that of midspan section. All the above solutions will provide references to the bridges of the same type.