Shutter type wind shield for high-speed railway bridge

Abstract

The invention discloses a shutter type wind shield for a high-speed railway bridge. The wind shield comprises at least two stand columns, wherein a gap is reserved between every two stand columns, bottoms of the stand columns are fixed on the ground or on a base, at least one wind blocking blade which can rotate along the central axis of the blade and used for blocking crosswind is arranged between every two adjacent stand columns, and a gap is reserved between rotation tracks of every two adjacent wind blocking blades. The wind blocking blades change rotation angles according to the magnitude of the crosswind, and for small-magnitude crosswind, the flow direction of the crosswind is changed while ventilation is performed through rotation of the small-angle wind blocking blades; for large-magnitude crosswind, the wind blocking blades rotate to be parallel to the wind coming direction, the crosswind directly passes through the gaps between the wind blocking blades, andthe wind load acting force caused by the large-magnitude crosswind to the shutter type wind shield is reduced, so that the effect transmitted by the shutter type wind shield to the bridge at the lower part is reduced, the normal design and operation of the bridge are guaranteed, and the extra cost caused by resistance to the crosswind is reduced.

Description

technical field [0001] The invention relates to the technical field of railway bridge devices, in particular to a louver-type wind barrier for high-speed railway bridges. Background technique [0002] With the rapid development of high-speed railways, the safety problems of high-speed trains are also reflected one by one. Cross wind is one of the threats to high-speed trains. The train running under the cross wind is affected by the lateral force caused by the cross wind, which is prone to threats such as overturning and derailment. The strong wind seriously limits the speed of the train. In order to maintain the stability of train operation, wind barriers are installed on both sides of the line to provide a low wind speed operating environment for trains in windy areas. [0003] The current wind barriers all adopt a fixed structure, which ensures the wind-shielding effect of the train by reducing the ventilation rate and increasing the height of the barrier. But this just...

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Problems solved by technology

[0005] In order to make up for the defects of the existing technology, the patent of the present invention provides a louvered wind screen for high-speed railway bridges to solve the fatigue damage of the existing fixed wind screen under the action of continuous cross wind; the wind screen will suffer High wind loads are transmitted to the bridge, resulting in technical problems of bridge damage

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