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A platform for research: civil engineering, architecture and urbanism
Flexible foot bridge with vibration suppression function
The invention provides a flexible foot bridge with a vibration suppression function, which comprises a foot bridge main beam and a vibration suppression device, and the vibration suppression device comprises a plurality of wind bells suspended below the foot bridge main beam at intervals. According to the flexible foot bridge provided by the invention, the vibration suppression device is suspended below the main beam of the foot bridge in the form of a wind bell, so that melodious ringtones can be provided, the flexible foot bridge has visual modeling beauty, and the pneumatic stability of the bridge can be improved. When airflow passes through the bridge, the wind chimes deflect by a certain angle along with the airflow and collide with one another to give out melodious ringtones. Under the working condition that the wind chime deflects, the flow state of airflow around the lower portion of the section of the bridge can be disturbed, the attack angle of wind can be changed, the situation that the inherent frequency of the bridge is close to or equal to the frequency of the wind is avoided, the wind-induced vibration phenomenon of the bridge is restrained, and the design is attractive, simple and effective. In addition, the wind chimes can increase the dead load set degree of the flexible pedestrian bridge and increase the gravity rigidity of the bridge, and therefore the capacity of the bridge for resisting deformation caused by live loads is improved.
本发明提供了一种具有抑振功能的柔性人行桥，包括人行桥主梁和抑振装置，抑振装置包括若干间隔地悬挂于人行桥主梁下方的的风铃。本发明提供的柔性人行桥，将抑振装置以风铃的形式悬挂于人行桥主梁下方，不仅能提供悦耳的铃声，并具有视觉造型之美，还能够提高桥梁气动稳定性。当气流通过桥梁时，风铃随气流发生一定角度的偏转，互相碰撞发出悦耳的铃声。在风铃发生偏转现象的工况下，会干扰气流在桥梁断面下部的绕流流态和改变风的攻角，避免桥梁的固有频率与风的频率接近或相等，抑制桥梁的风致振动现象，是一种美观和简洁有效的设计。另外，风铃可以增大柔性人行桥梁的恒载集度，增加桥梁的重力刚度，从而增加桥梁抵抗活载引起变形的能力。
Flexible foot bridge with vibration suppression function
The invention provides a flexible foot bridge with a vibration suppression function, which comprises a foot bridge main beam and a vibration suppression device, and the vibration suppression device comprises a plurality of wind bells suspended below the foot bridge main beam at intervals. According to the flexible foot bridge provided by the invention, the vibration suppression device is suspended below the main beam of the foot bridge in the form of a wind bell, so that melodious ringtones can be provided, the flexible foot bridge has visual modeling beauty, and the pneumatic stability of the bridge can be improved. When airflow passes through the bridge, the wind chimes deflect by a certain angle along with the airflow and collide with one another to give out melodious ringtones. Under the working condition that the wind chime deflects, the flow state of airflow around the lower portion of the section of the bridge can be disturbed, the attack angle of wind can be changed, the situation that the inherent frequency of the bridge is close to or equal to the frequency of the wind is avoided, the wind-induced vibration phenomenon of the bridge is restrained, and the design is attractive, simple and effective. In addition, the wind chimes can increase the dead load set degree of the flexible pedestrian bridge and increase the gravity rigidity of the bridge, and therefore the capacity of the bridge for resisting deformation caused by live loads is improved.
本发明提供了一种具有抑振功能的柔性人行桥，包括人行桥主梁和抑振装置，抑振装置包括若干间隔地悬挂于人行桥主梁下方的的风铃。本发明提供的柔性人行桥，将抑振装置以风铃的形式悬挂于人行桥主梁下方，不仅能提供悦耳的铃声，并具有视觉造型之美，还能够提高桥梁气动稳定性。当气流通过桥梁时，风铃随气流发生一定角度的偏转，互相碰撞发出悦耳的铃声。在风铃发生偏转现象的工况下，会干扰气流在桥梁断面下部的绕流流态和改变风的攻角，避免桥梁的固有频率与风的频率接近或相等，抑制桥梁的风致振动现象，是一种美观和简洁有效的设计。另外，风铃可以增大柔性人行桥梁的恒载集度，增加桥梁的重力刚度，从而增加桥梁抵抗活载引起变形的能力。
Flexible foot bridge with vibration suppression function
一种具有抑振功能的柔性人行桥
HE HUIYU (author) / YU XIANGLIANG (author) / ZHAN XIAOYU (author) / HE HAN (author) / ZHOU YUE (author) / LIN QISHUN (author) / LIAN XIAOMIN (author)
2023-05-09
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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