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DEVICE FOR REDUCING VIBRATIONS OF BRIDGE DESIGN CAUSED BY WIND

机译：减少风致桥梁设计振动的装置

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摘要

The invention relates to the field of aerodynamics, in particular to devices for reducing vibrations bridge structure and can be used to reduce transverse vibrations bridge spans, the influence caused by the wind. The proposed device is to reduce vibrations of the structure of the superstructure of the bridge caused by flow separation. The technical result consists in the elimination of flow separation over the entire range of wind speeds, as well as to reduce material consumption structure. Said technical result is achieved in that the device for reducing vibrations of bridge structure caused by wind, comprises a pair of horizontal and inclined plate having a rectangular shape in plan and arranged along the span on both its sides below the bottom surface of the stiffening beam. The plates are made as separate sections and arranged relative to each other at a distance of from 0.1 to 50 H, where H - the height of the beam stiffness of the span of the bridge, the inclined plate pivotally connected to the fixed horizontal plates arranged to deviate from the vertical by angle β varying in the range from 0 ° to β β 180 °, via β tilt angle control actuator receiving a signal from an acceleration sensor mounted on the superstructure of the bridge. Apparatus for reducing vibrations of bridge structure caused by wind, can be used as a permanent element structure of the existing bridge, and as a temporary module allowing for mounting stage bridge span to protect it from the possibility of aerodynamic instability.
机译：本发明涉及空气动力学领域，尤其涉及用于减小振动桥结构的装置，并且可以用于减小由风引起的横向振动桥的跨度。所提出的装置是为了减少由流动分离引起的桥梁上部结构的结构的振动。技术成果在于消除了整个风速范围内的气流分离，并减少了材料消耗结构。所述技术结果是通过减少风引起的桥梁结构的振动的装置而实现的，该装置包括一对水平且倾斜的板，该一对水平的倾斜板的平面形状为矩形，并且沿着跨度布置在加劲梁的底面下方的两侧。 。将板制成独立的部分，并以0.1至50 H的距离彼此相对布置，其中H-桥跨度的梁刚度高度，倾斜板可枢转地连接到固定的水平板上通过倾斜角控制致动器从安装在桥架上部结构上的加速度传感器接收信号，使倾斜角从垂直方向偏离角度β，角度β在0°到ββ180°范围内变化。用于减小由风引起的桥梁结构的振动的设备可以用作现有桥梁的永久性元件结构，并且可以用作临时模块，以允许安装阶段桥梁跨度，以保护其免受空气动力学不稳定的可能性。

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