These are prestress in cables, sag of cables, riseof arches, the vertical flexible stiffness of arches and the axial stiffness ratio between the cable and the arch.
这些参数为索预应力、索垂度、拱矢高、拱竖向抗弯刚度以及索和拱的轴向刚度比。
2
Onthis foundation, the best range ofrise-span ratio ofarch bridge which reachesits limitation span is discussed.
并以此为基础，就极限跨径下拱桥的最佳矢跨比范围进行讨论。
3
For a secondary bifurcation buckling load, the limit load carried capacity of the archof 0.1 rise-span ratio is the biggest one under a full span load distribution.