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发现板在两端简支、中点联结松动时，结构首先出现屈曲失稳，而不会发生颤振失稳。
For pined_pined, loosed midpoint support plate, it is found that the plate's buckling instability will happen first while the flutter instability will disappear.
发现板在两端简支、中点联结松动时，结构首先出现屈曲失稳，而不会发生颤振失稳。
For pined_pined, loosed midpoint support plate, it is found that the plates buckling instability will happen first while the flutter instability will disappear.
结构的颤振失稳风速呈下降趋势，最低颤振失稳风速出现在成桥阶段，临时墩的架设和边跨合拢对结构的颤振稳定性有提升作用。
The erection of the temporary piers in side spans and the completion of the side spans can improve the aerodynamic stability of the bridge under construction.
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