A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Large-span bridge separation type three-box girder wind vibration monitoring and intelligent vibration reduction protection device
The invention discloses a large-span bridge separation type three-box girder wind vibration monitoring and intelligent vibration reduction protection device, which comprises four sets of anemorumbometers, a plurality of acceleration sensors, a collection box, a central control system and four sets of air suction/blowing systems, and is characterized in that the central control system collects data of the four sets of anemorumbometers and the plurality of acceleration sensors in real time; the central control system judges the wind field condition at the position with the maximum acceleration and the three box girders are in a static or vibration state, if the three box girders vibrate, the central control system judges whether the vibration amplitude exceeds a standard allowable value or not, then controls operation of the four sets of air suction/blowing systems and feeds back collected wind speed signals and vibration signals in real time, closed-loop control is formed, and the wind speed signals and the vibration signals are transmitted to the three box girders. And until the gap flow dominant frequency power spectrum density amplitude and the real-time vibration amplitude are smaller than the allowable values. The device has the advantage of being simple in structure, and vortex-induced vibration of the separated three-box-girder structure can be effectively prevented/controlled.
本发明公开一种大跨度桥梁分离式三箱梁风振监测及智能减振防护装置，包括四套风速风向仪、多个加速度传感器、采集箱、中央控制系统和四套吸/吹气系统，中央控制系统实时采集四套风速风向仪及多个加速度传感器的数据，判定加速度最大位置风场情况及三箱梁为静止或振动状态，若三箱梁发生振动，中央控制系统会判断振动幅值是否超过规范容许值，进而对四套吸/吹气系统的运行进行控制，并实时反馈采集到的风速信号和振动信号，形成闭环控制，直至间隙流主频功率谱密度幅值及实时振动幅值小于容许值。本发明的装置具有结构简单的优点，能够有效地预防/控制分离式三箱梁结构的涡激振动。
Large-span bridge separation type three-box girder wind vibration monitoring and intelligent vibration reduction protection device
The invention discloses a large-span bridge separation type three-box girder wind vibration monitoring and intelligent vibration reduction protection device, which comprises four sets of anemorumbometers, a plurality of acceleration sensors, a collection box, a central control system and four sets of air suction/blowing systems, and is characterized in that the central control system collects data of the four sets of anemorumbometers and the plurality of acceleration sensors in real time; the central control system judges the wind field condition at the position with the maximum acceleration and the three box girders are in a static or vibration state, if the three box girders vibrate, the central control system judges whether the vibration amplitude exceeds a standard allowable value or not, then controls operation of the four sets of air suction/blowing systems and feeds back collected wind speed signals and vibration signals in real time, closed-loop control is formed, and the wind speed signals and the vibration signals are transmitted to the three box girders. And until the gap flow dominant frequency power spectrum density amplitude and the real-time vibration amplitude are smaller than the allowable values. The device has the advantage of being simple in structure, and vortex-induced vibration of the separated three-box-girder structure can be effectively prevented/controlled.
本发明公开一种大跨度桥梁分离式三箱梁风振监测及智能减振防护装置，包括四套风速风向仪、多个加速度传感器、采集箱、中央控制系统和四套吸/吹气系统，中央控制系统实时采集四套风速风向仪及多个加速度传感器的数据，判定加速度最大位置风场情况及三箱梁为静止或振动状态，若三箱梁发生振动，中央控制系统会判断振动幅值是否超过规范容许值，进而对四套吸/吹气系统的运行进行控制，并实时反馈采集到的风速信号和振动信号，形成闭环控制，直至间隙流主频功率谱密度幅值及实时振动幅值小于容许值。本发明的装置具有结构简单的优点，能够有效地预防/控制分离式三箱梁结构的涡激振动。
Large-span bridge separation type three-box girder wind vibration monitoring and intelligent vibration reduction protection device
大跨度桥梁分离式三箱梁风振监测及智能减振防护装置
GAO DONGLAI (author) / MENG HAO (author) / CHEN WENLI (author) / LI HUI (author)
2024-09-20
Patent
Electronic Resource
Chinese
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