A suspension bridge project is taken as an example, in which the evolution of critical wind speed of flutter during bridge erection is studied by a multi-mode flutter analysis approach.
以某悬索桥设计方案为工程背景，应用多模态颤振分析方法，分析了该桥架设阶段颤振临界风速的发展趋势。
When the head's shape or width of central slot is unsuitable, central slot decreases critical flutter wind speed instead of increasing it.
当头部形状或开槽宽度不合适时，中间开槽不但不能提高颤振临界风速，反而降低了断面的颤振稳定性。
Flutter derivatives play very important roles for determining the flutter critical wind speed and buffeting responses of long-span Bridges.
气动导数是大跨桥梁结构颤振和抖振分析中确定颤振临界风速和抖振响应的重要依据。
The results of the wind tunnel test show the flutter critical speed of the wing model increases by 37% after the implementation of AFS system.
风洞试验结果说明，采用颤振主动抑制控制系统后，机翼的颤振临界速度可提高37%。
The studying of the different sections deck shows: the variation pattern of flutter critical wind speed of bridge with flat box deck and wind yaw Angle is significantly affected by wind attack Angle.
研究发现：扁平箱形断面桥梁的颤振临界风速与风偏角的关系明显地受到风攻角的影响。
Finally, to determine the bridge flutter, galloping and buffeting critical wind speed as a method of judging the stability, buffeting response analysis is the key point.
最后，对成桥运营阶段确定了颤振、驰振临界风速以此来做为稳定性的判断依据，并重点进行脉动风场的抖振响应分析。
Finally, to determine the bridge flutter, galloping and buffeting critical wind speed as a method of judging the stability, buffeting response analysis is the key point.
最后，对成桥运营阶段确定了颤振、驰振临界风速以此来做为稳定性的判断依据，并重点进行脉动风场的抖振响应分析。
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