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.
支架：有两根枢轴联结上承板、中承板和下承板之间的距离籍支承套固定为25毫米。
Bracket: it gets two pivots to contact upper support plate, mid-support plate and lower support plate and fix the distance 25mm.
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.
利用设置桥面横向预应力的技术，增强桥面的横向联结刚度，改善空心板梁与桥面板的共同受力性能。
Transverse pre-stress steel wire is set in order to advance the transverse rigidity of the deck and improve the stressed state of the cellular slab and the deck.
利用设置桥面横向预应力的技术，增强桥面的横向联结刚度，改善空心板梁与桥面板的共同受力性能。
Transverse pre-stress steel wire is set in order to advance the transverse rigidity of the deck and improve the stressed state of the cellular slab and the deck.
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