大跨度拱桥气动弹性模型设计

气动弹性模型设计是桥梁模型风洞试验的先决条件．主要讨论了大跨度中承式拱桥的气动弹性模型设计问题，分析了不同横撑布置和抗弯刚度对模型设计的影响，指出不同的横撑刚度需要采用完全不同的方案设计．针对变截面空间拱，提出了利用将变截面空间投影变换到平面设计，然后将设计好的拱反投影到空间的方法，较好地实现模型设计．实例表明，该方法是有效的．

Full Aero-elastic Bridge Model Design of Long Span Arch Bridge

Aero-elastic model design is the precondition of full bridge aero-elastic model tunnel tests. The full aero-elastic bridge model design of long span arch bridge is discussed. The effect on the model design of different transverse rod space and bend stiff is analyzed in detail. Different scheme need to be designed according to the transverse rod stiff. Considering the changing section dimensional arches, the method of projecting the spatial arches to the plane arches, then designing the plane arches, at last projecting the plane arches to the spatial arches is proposed at first. The results show that the method is effective.