钢箱拱肋制作预拱度与制造线形控制

The fabrication camber and linear control of steel-box arch rib

对广州南沙区凤凰三桥施工阶段进行分析计算,得出拱肋的制造预拱度值,将预拱度值与设计线形叠加可得到拱肋的制造线形。通过设置限位排座和调整鞍座,在空间上保证了拱肋制造线形的精度。

By means of Guangzhou Nansha area Phoenix Third Bridge construction simulation analysis,we obtained the arch rib camber.Adding the camber to the design linear,we can conclude the arch rib fabrication geometry.By the way of setting limit row seat and adjusting saddle,we could control the fabrication accuracy.