大跨度节段预制悬臂拼装桥施工过程受力研究

以郑州西四环主线桥为工程背景,结合国内外研究成果,针对节段拼装桥梁的力学性能进行研究分析,利用有限元软件Midas Civil建立大跨度节段预制悬臂拼装梁桥全桥有限元模型,计算分析桥梁静力学性能,通过对节段拼装梁桥进行受力分析,得出背景工程桥梁在不同荷载组合工况作用下受力合理,满足规范要求,研究结论可为同类桥梁结构计算提供参考.

Study on Mechanical Performance of Long-span Segmental Precast Cantilever Assembled Girder Bridge during Construction

Taking the West Fourth Ring Main Bridge in Zhengzhou as the engineering background, combined with the study results at home and abroad, the mechanical properties of segmental assembled bridges are studied and analyzed. The finite element model of the whole bridge for long-span segmental precast cantilever assembled girder bridge is established by MIDAS/Civil to calculate analyze the statics performance of bridge. Through the stress analysis of the segmental assembled girder bridge, it is concluded that the load of the bridge in the background engineering is reasonable under the different loading combinations, which meet the specification requirements. The study conclusion can provide the reference for the calculation of similar bridge structures.