Active Wind-resistant Steel Box Girder Movable Air Nozzle and Its Control System

Abstract

The invention discloses an active wind-resistant movable steel box girder wind fairing and a control system thereof. The movable wind fairing comprises an upper left movable panel, an upper middle movable panel, an upper right movable panel, a lower left movable panel, a lower middle movable panel and a lower right movable panel, and the movable panels generates translation displacement and rotation displacement under the action of a mechanical control system, so that the line shape of a steel box girder is changed; control systems comprise the mechanical control system, a sensor system, a data analyzing and processing system and a data transmission system, wherein the mechanical control system controls the translation and the rotation of the movable wind fairing, and the sensor system andthe mechanical control system are connected to the data analyzing and processing system through the data transmission system. By means of the active wind-resistant movable steel box girder wind fairing, it is achieved that the shape of the steel box girder wind fairing can be changed, the adaptability of a girder in various wind environments is improved, and the active wind-resistant movable steel box girder wind fairing has a wide application prospect in the long-span bridge wind-induced vibration control field.

Description

technical field [0001] The invention relates to a wind-induced vibration control system of a long-span bridge, in particular to a movable air nozzle of an active wind-resistant steel box girder and a control system thereof. Background technique [0002] Wind disaster is a frequent natural disaster. According to statistics, there are 7 landfalling typhoons on average in my country's coastal areas every year, causing 6 severe storm surge disasters, and the maximum wind speed can reach more than 60m / s. Bridge structures, especially long-span bridges are wind-sensitive structures and are easily affected by wind disasters. The wind will bring various diseases to the bridge. The vibration of the bridge deck may cause traffic interruption or make pedestrians lose their sense of security, lead to premature fatigue failure of bridge components, and even cause serious tragedy of bridge destruction. With the continuous development of my country's bridge industry, the problem of wind-...

AI Technical Summary

Problems solved by technology

[0004] Purpose of the invention: The purpose of this invention is to provide a kind of active wind-resistant steel box girder movable air nozzle and its control system to solve the problem of wind-induced vibration of steel box girders of long-span bridges

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