大跨度钢管混凝土拱桥拱肋少支架安装法

Erection of Ribs on Large-Span CFST Arch Bridges with Method of Limited Brackets

结合实际工程介绍了少支架安装法在大跨度钢管混凝土拱桥中的应用,着重分析说明了在安装过程中预抬高量计算、地基沉陷以及各节段间标高控制方法.实践证明,少支架法安装大跨度钢管混凝土拱桥是合理的,不仅安全稳定性好,而且施工快、费用低.

On the basis of a practical project, a brief introducation is made on the application of the method of limited brackets on large-span CFST arch bridges, and an explanation is added to the camber calculation, the setting of subgrade and the elevation control over the panel joints in the erection process. The practice shows that it is intelligent to erect ribs on large-span CFST arch bridges with the method of limited brackets, which takes priority of high security and stability, quickness and low cost in construction.