The rationality method of first cable-tension is that tensile cables from the bridge tower to midspan and side span with increasing tension.

• 本文提出的第一遍吊索张拉的合理状态是：从桥塔的两侧对称地向中跨跨中和边跨两岸张拉，在张拉过程中，先张拉的吊索张拉力较小，后期张拉的吊索张拉力逐渐增大至最终索力。