In the process of the linetype control analysis of the construction stage, the axis of the arch rib keeps round the ideal arch axis all the time.
施工阶段线型控制分析过程中,拱肋轴线始终在理想拱轴线附近。
On this model basis the first step method is used for optimization of the arch axis coefficient of the arch bridge.
在此模型基础上,使用一阶方法对拱桥的拱轴系数进行优化。
In design, the overall size of arch bridge is arranged firstly. Basing on it, arch axis coefficient and internal forces of dead load and live load are calculated.