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。
These are prestress in cables, sag of cables, rise of arches, the vertical flexible stiffness of arches and the axial stiffness ratio between the cable and the arch.
对于矢跨比较小的坦拱，矢高与截面回转半径的比值将决定拱的屈曲形式。
Secondary buckling mode of shallow arches depended on the ratio of rise to gyration radius.
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