大跨度连续梁-拱组合结构钢管拱肋安装工艺研究

Research on Installation Technology of the Steel Pipe Arch Rib in Large-span Continuous Beam-Arch Composite Structure

梁-拱结合结构钢管拱肋部位是大跨度连续梁拱组合桥设计的关键部位,其受力性能对全桥承载能力和跨越能力至关重要。文章结合具体工程实例,阐述了大跨度连续梁-拱组合结构拱肋分段布置方案,对支架抗倾覆稳定性进行了分析,并就大跨度连续梁-拱组合结构G2~G5节段拱肋安装施工技术要点展开了详细的研究,以提高钢管拱肋施工效率,确保桥梁工程整体施工质量,促进桥梁工程事业的长远发展。

The steel pipe arch rib of beam-arch composite structure is the key part of the design of large-span continuous beam-arch composite bridge,and its mechanical performance is very important to the bearing capacity and spanning capacity of the whole bridge.Combined with specific engineering examples,this paper expounds the segmental arrangement scheme of arch ribs of large-span continuous beam-arch composite structure,analyzes the anti-overturning stability of the support,and studies in detail the installation construction technical points of G2-G5 segment arch ribs of large-span continuous beamarch composite structure,so as to improve the construction efficiency of steel pipe arch ribs,ensure the overall construction quality of bridge engineering,and promote the long-term development of bridge engineering.