Hinged rectifying plate for reducing water resistance of bridge pier

Abstract

The invention provides a hinged rectifying plate for reducing water resistance of a bridge pier, and belongs to the technical field of bridge pier flood fighting. For a bridge crossing a river, a hinged rectifying plate capable of adaptively adjusting the position and posture of the rectifying plate according to the water flow direction is arranged at the tail of a bridge pier in water, and the purposes of disturbing falling of water flow vortex at the tail of the bridge pier, adjusting the negative pressure of the back of the bridge pier and reducing water flow resistance to the maximum are achieved. Compared with a traditional rigid rectangular solid flow guide plate device fixed to a bridge pier, the device has the advantages that according to the variable water flow direction, the positions and postures of the rectifying plates are adaptively changed within a large range, the multiple rectifying plates can rotate to form included angles, holes can be formed in the rectifying plates, and curved plates can also be adopted; through the measures, the flowing water resistance can be better reduced; parameters such as shapes, sizes, quantity, hole opening positions and hole diameters of the rectifying plates are flexible and variable; the device is simple in structure, convenient to install, flexible in arrangement, economical and efficient.

Description

technical field [0001] The invention relates to a device for reducing the water flow resistance of bridge piers, in particular to a type of hinged rectifying plate. Background technique [0002] Millions of bridges across rivers and rivers have been built at home and abroad, and many bridge piers are built in water. The flow direction of river water and river water is relatively stable, and the direction of water impact load on bridge piers is also relatively fixed. Bridge piers often adopt circular or quasi-circular cross-sections, and the water flow resistance coefficient is relatively large. When the flow velocity and water blocking area are large, the piers will be subjected to a large horizontal thrust, which may even endanger the safety of the bridge structure. Therefore, measures should be taken to reduce the water resistance coefficient of bridge piers as much as possible to ensure the safety of bridge structures. For bridge piers with specific cross-sections, the...

AI Technical Summary

Problems solved by technology

Therefore, the traditional pier rectifiers and fairings cannot automatically adapt to the direction of water flow, and cannot achieve the best drag reduction effect

When the water flow direction has a large inclination, the resistance coefficient will even increase, posing a threat to the flood safety of the bridge structure

In addition, the fairing device has the disadvantages of troublesome processing, complicated installation, and high cost; once installed, it is difficult to adjust and replace

Images