In the design of aeroelastic model of long-span concrete-filled steel tube arch bridge, the method of using an equivalent mandril to simulate the stiffness of whole arch rib is mainly used at present.

• 摘要对于超大跨度钢管混凝土拱桥，由于受模型缩尺比所限，通常在气弹模型试验中不能单独模拟出拱肋中单根钢管的刚度，目前常采用集中刚度法用一个芯棒模拟整个钢管桁架的刚度。