钢管砼拱桥拱肋节段的放样坐标计算

钢管砼拱桥拱肋钢管放样坐标是制作拱肋的首要内容,常规的放大样方法费工费时,需要的放样场地较大。用平面几何关系计算放样坐标可大大简化施工工序,且精度高,推导的公式同样适用于钢筋砼拱肋的预制放样,适于编制程序,并给出了计算流程图。该方法已在多座钢管砼拱桥中应用,效果良好。

The calculation of the lofting coordinate of the ring segments for the CFST arch bridges

It's the important work for calculating the lofting coordinate of the ring segment for the concrete filled steel tubular arch bridges.The original method,which enlarged the model,took not only long time and many workers,but also need a large field.The directly method on lofting coordinate by means of plane geometry relation may calculating heavily simply the procedure and improve the lofting precise.The formula can also apply to the reinforced concrete arch. A flow chart was given in this paper for computer program.This method has been successfully introduced in many CFST arch bridges.