特大跨钢桁拱拱脚段定位与安装技术

Location and Installation Technology of Arch Foot Connecting Section of Extra Large Span Steel Truss Arch

通过工程实例阐述了特大跨度钢桁拱拱脚预埋件精确定位施工工艺及关键技术操作要点,拱脚预埋件精确定位采用设计的定位胎架刚接在钢支架进行定位,保证了该桥拱圈精确定位,线形满足要求,保证了拱脚施工质量。

Through engineering examples, this article expounds the arch foot accurate positioning construction technology and the key point of technical operation of the large span steel truss arch. The arch foot embedded parts is fixed edge positioning in steel bracket with the design of positioning jig, which ensures that the bridge arch ring precise positioning linear can meet the requirements and guarantee the arch foot construction quality.