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A platform for research: civil engineering, architecture and urbanism
Bridge tower for large-span bridge capable of resisting strong wind/typhoons
The invention discloses a bridge tower for a large-span bridge capable of resisting strong wind/typhoons. According to the bridge tower, an active flow control technology based on an air suction/blowing principle is introduced on the basis of a bridge tower structure for an existing large-span bridge, zero-mass jet devices and an active flow control system are reasonably arranged in the bridge tower structure, and therefore effective control over wind-induced vibration of the bridge tower structure of the large-span bridge under the action of the strong wind/typhoons is achieved. A specific method comprises the steps that the zero-mass jet devices are arranged in tower columns and transverse beams between the tower columns, operation of the zero-mass jet devices is controlled through a threshold determination subsystem with the help of measured data of anemorumbometers, acceleration sensors and wind-pressure gauges in the active flow control system, and therefore active flow control over wind-induced vibration of the bridge tower for the large-span bridge on the basis of the air suction/blowing principle is achieved; meanwhile, the tower columns and the transverse beams between the tower columns are specifically designed to resist the additional dynamic effect of the zero-mass jet devices in the working process. The bridge tower has the broad engineering application prospect of vibration control of ultrahigh bridge tower structures of large bridges.
Bridge tower for large-span bridge capable of resisting strong wind/typhoons
The invention discloses a bridge tower for a large-span bridge capable of resisting strong wind/typhoons. According to the bridge tower, an active flow control technology based on an air suction/blowing principle is introduced on the basis of a bridge tower structure for an existing large-span bridge, zero-mass jet devices and an active flow control system are reasonably arranged in the bridge tower structure, and therefore effective control over wind-induced vibration of the bridge tower structure of the large-span bridge under the action of the strong wind/typhoons is achieved. A specific method comprises the steps that the zero-mass jet devices are arranged in tower columns and transverse beams between the tower columns, operation of the zero-mass jet devices is controlled through a threshold determination subsystem with the help of measured data of anemorumbometers, acceleration sensors and wind-pressure gauges in the active flow control system, and therefore active flow control over wind-induced vibration of the bridge tower for the large-span bridge on the basis of the air suction/blowing principle is achieved; meanwhile, the tower columns and the transverse beams between the tower columns are specifically designed to resist the additional dynamic effect of the zero-mass jet devices in the working process. The bridge tower has the broad engineering application prospect of vibration control of ultrahigh bridge tower structures of large bridges.
Bridge tower for large-span bridge capable of resisting strong wind/typhoons
WANG HAO (author) / XU ZIDONG (author) / SUN FUYANG (author) / TAO TIANYOU (author) / YANG MIN (author)
2015-09-09
Patent
Electronic Resource
English
IPC:
E01D
BRIDGES
,
Brücken
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