Temporary anti-scour device for bridge pier of seasonal river in rainy season

Abstract

The utility model belongs to the technical field of bridge pier protection, and particularly relates to a seasonal river bridge pier temporary anti-scouring device in rainy season, which comprises a protective sleeve installed on the surface of a bridge pier, a flow guide mechanism connected with the protective sleeve and facing the direction of incoming water, and a jet pipe arranged on the flow guide mechanism and opposite to the outer circumferential area of the bottom of the bridge pier. The utility model has a simple structure and is convenient to install and disassemble. It is specially used for protecting the bridge pier of a bridge over a river such as the Yellow River, which contains a large amount of sand and stone. The utility model can not only guide the water flow to avoid direct impact on the bridge pier, but also jet-impact the silt accumulated at the bottom of the bridge pier, so that the silt is boiled and then washed away with the water flow. In this way, the structure of the protected bridge pier is safe, and the flow resistance effect caused by silt accumulation is avoided.

Description

Technical Field

[0001] This invention belongs to the field of bridge pier protection technology, specifically relating to a temporary anti-scouring device for seasonal river bridge piers during the rainy season. Background Technology

[0002] During the rainy season, the Yellow River basin has abundant water, and the water level rises and falls rapidly. The water also contains a high amount of sediment, and boulders frequently collide with bridge piers, which can easily damage the steel reinforcement protective layer on the surface of the bridge piers, thus affecting their service life. At the same time, due to the flow-obstructing characteristics of the bridge piers, silt can easily accumulate near them, which over time affects the flow performance of the water.

[0003] Traditional bridge pier protection devices have the following problems: insufficient assemblability and slow installation efficiency; they can only play a simple diversion effect and are not ideal for solving the problem of siltation at the bridge piers. Therefore, there is an urgent need to design a targeted, easy-to-assemble and disassemble, and integrated anti-siltation and anti-erosion temporary protection device for bridge piers in the Yellow River during the rainy season. Utility Model Content

[0004] To address the problems of existing technologies, this invention discloses a temporary anti-scouring device for seasonal river bridge piers during the rainy season. The purpose is to provide a targeted, easy-to-assemble and disassemble, integrated anti-siltation and anti-scouring temporary protection device for Yellow River bridge piers during the rainy season.

[0005] To achieve the above objectives, the technical solution of this invention is as follows: A seasonal river pier temporary anti-scouring device for rainy season includes a protective sleeve for installation on the surface of the pier, a flow guiding mechanism connected to the protective sleeve and facing the direction of incoming water, and a jet pipe disposed on the flow guiding mechanism and opposite to the outer periphery of the bottom of the pier.

[0006] Preferably, the flow guiding mechanism is a triangular prism structure, with one side edge of the triangular prism structure vertically arranged and facing the direction of incoming water, and the side surfaces of the triangular prism structure on both sides of the side edge forming a flow guiding surface.

[0007] Preferably, the included angle of the two guiding surfaces satisfies the condition that the water flows from both sides of the pier and avoids the water directly impacting the pier.

[0008] Preferably, the guide surface is evenly distributed with a plurality of guide grooves, and the guide grooves are arranged laterally on the guide surface.

[0009] Preferably, the jet tubes are symmetrically arranged on two guide surfaces. The jet tubes penetrate the guide surfaces and the end face of the triangular prism structure facing the pier. The rear end of the jet tubes is inclined downward and points to the outer peripheral area of ​​the bottom of both sides of the pier. The front end of the jet tubes is provided with a metal filter screen.

[0010] Preferably, the inner diameter of the jet tube gradually decreases, with the front end of the jet tube being the large-diameter end and the rear end being the small-diameter end; one or more jet tubes are distributed on each guide surface.

[0011] Preferably, the flow guiding mechanism is a regular triangular prism structure. The back of the regular triangular prism structure is fixedly connected to the protective sleeve by a connecting block and a bolt and nut assembly. The protective sleeve has a U-shaped seat for assembly with the connecting block at one end facing the flow guiding mechanism.

[0012] Preferably, the protective sleeve is made of three arc-shaped plates spliced ​​together. The upper and lower ends of the arc-shaped plates are provided with horizontally arranged arc-shaped connecting plates. The outer surfaces of the arc-shaped connecting plates are respectively provided with butt plates. The butt plates between adjacent arc-shaped plates fit tightly together. The butt plates are provided with through holes for bolts to pass through. Adjacent butt plates are fixedly connected by bolts passing through the through holes and nuts screwed onto the bolts.

[0013] Preferably, the inner edge of the arc-shaped connecting plate is coplanar with the inner surface of the arc-shaped plate, and multiple fixed shafts are evenly distributed between the upper and lower ends of the arc-shaped connecting plates on the outer side of the arc-shaped plate. A bushing is rotatably connected to the fixed shaft, and multiple blades are distributed vertically on the outer surface of the bushing.

[0014] The beneficial effects of this novel temporary anti-scouring device for seasonal river bridge piers during the rainy season are as follows: This new type of structure is simple and easy to install and disassemble. It is specifically designed to protect the piers of bridges on rivers with a lot of sand and gravel, such as the Yellow River. It can not only guide the water flow to avoid direct impact on the piers, but also use jet impact to impact the silt accumulated at the bottom of the piers, causing the silt to "boil" and be washed away by the water flow. While protecting the structural safety of the piers, it avoids the flow obstruction effect caused by silt accumulation. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the basic structure of this novel invention.

[0016] Figure 2 This is a schematic diagram of the structure of this novel arc-shaped plate.

[0017] Figure 3 This is a schematic diagram of blades mounted on a fixed shaft.

[0018] Figure 4 This is a schematic diagram of the new flow guiding mechanism.

[0019] Figure 5 This is a top view of the new flow guiding principle.

[0020] Figure 6 This is a schematic diagram of the installation of this new type of jet tube.

[0021] Figure 7This is a front view of the jet tube installed on the flow guiding mechanism.

[0022] 01. Water flow; 02. Bridge pier; 03. Water direction; 04. Jet pipe; 05. Metal filter screen; 06. Arc plate; 1. Flow guiding mechanism; 2. Arc connecting plate one; 3. Arc connecting plate two; 4. Arc connecting plate three; 5. Fixed shaft; 6. Connecting block; 7. U-shaped seat; 8. Bolt hole; 9. Flow guiding groove; 10. Blade; 11. Through hole; 12. Bushing; 13. Upper U-shaped seat; 14. Outer surface of arc plate; 15. Connecting plate. Detailed Implementation

[0023] The following description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

[0024] The following embodiments can be understood as representing a part of the local structure or method of the present invention, or as a combination of embodiments explaining the broader structure or method of the present invention.

[0025] A temporary anti-scouring device for seasonal river bridge piers during the rainy season, such as Figure 1-7 As shown, the system includes a protective sleeve installed on the surface of the pier 02, a flow guiding mechanism 1 connected to the protective sleeve and facing the direction of incoming water, and a jet pipe 04 disposed on the flow guiding mechanism 1 and opposite to the outer periphery of the bottom of the pier 02. The flow guiding mechanism is used to guide the water flow directly towards the pier, preventing it from directly impacting the pier. The protective sleeve covers the surface of the pier, protecting the concrete protective layer from damage by the water flow and boulders. The jet pipe sprays a sand-free water flow to impact the silt and sand accumulated around the base of the pier, causing the silt and sand to boil under the impact and be washed away by the water flow.

[0026] In this embodiment, as Figure 1-7 As shown, the flow guiding mechanism 1 is a triangular prism structure. One side edge of the triangular prism structure is vertically arranged and faces the water inflow direction 03. The sides of the triangular prism structure on both sides of the side edge form the flow guiding surface.

[0027] Furthermore, the included angle between the two guiding surfaces satisfies the following condition: the water flow 01 is guided from both sides of the pier 02 and the water flow 01 is prevented from directly impacting the pier 02.

[0028] Furthermore, the guide surface is evenly distributed with a plurality of guide grooves 9, which are arranged laterally on the guide surface.

[0029] In this embodiment, as Figure 6 , 7As shown, the jet pipes 04 are symmetrically arranged on two guide surfaces. The jet pipes 04 penetrate the guide surfaces and the end face of the triangular prism structure facing the pier 02. The rear end of the jet pipes 04 is inclined downwards and points towards the outer periphery of the bottom sides of the pier 02. A metal filter screen 05 is provided at the front end of the jet pipes 04. Water flows through the metal filter screen to remove sand and gravel particles, and then is ejected through the jet pipes to both sides of the bottom of the pier, thereby impacting the silt accumulated at this location and washing it away with the water flow.

[0030] Specifically, the inner diameter of the jet tube 04 gradually decreases, with the front end of the jet tube 04 being the larger diameter end and the rear end being the smaller diameter end; one or more jet tubes are distributed on each guide surface. Based on the Venturi effect, the water flow velocity increases after the diameter is reduced, thereby increasing the impact force of the jet on sediment.

[0031] In this embodiment, as Figure 1-7 As shown, the flow guiding mechanism 1 is a regular triangular prism structure. The back of the regular triangular prism structure is fixedly connected to the protective sleeve via a connecting block 6 and a bolt and nut assembly. The end of the protective sleeve facing the flow guiding mechanism 1 is provided with a U-shaped seat 7 for assembly with the connecting block. The connecting block 6 is inserted into the U-shaped seat 7, and the connecting block and the U-shaped seat are fixedly connected by bolts passing through the connecting block and the U-shaped seat and nuts screwed onto the bolts.

[0032] In this embodiment, as Figure 1-7 As shown, the protective sleeve is composed of three arc-shaped plates 06 spliced ​​together. The upper and lower ends of the arc-shaped plates 06 are provided with horizontally arranged arc-shaped connecting plates (2 / 3 / 4). The outer surfaces of the arc-shaped connecting plates (2 / 3 / 4) are respectively provided with butt plates 15. The butt plates 15 between adjacent arc-shaped plates fit tightly together. The butt plates 15 are provided with through holes 11 for bolts to pass through. Adjacent butt plates 15 are fixedly connected by bolts passing through the through holes 11 and nuts screwed onto the bolts.

[0033] In this embodiment, as Figure 1-4 As shown, the inner edge of the arc-shaped connecting plate (2 / 3 / 4) is coplanar with the inner surface of the arc-shaped plate 06. Multiple fixed shafts 5 are evenly distributed between the upper and lower ends of the arc-shaped connecting plates (2 / 3 / 4) on the outer side of the arc-shaped plate 06. A bushing 12 is rotatably connected to the fixed shaft 5. Multiple blades 10 are distributed vertically on the outer surface of the bushing 12.

[0034] The working principle of this new type: In use, the flow guiding mechanism is oriented towards the side of the incoming water. The arc-shaped plate is spliced ​​onto the outer perimeter of the pier and fixed to the pier surface using bolt and nut assemblies. The flow guiding mechanism is then fixed to the protective sleeve using bolt and nut assemblies. The water flow is guided by the flow guiding mechanism to both sides of the pier, avoiding direct impact on the pier. At the same time, the jet pipe impacts the silt accumulated at the bottom of the pier, causing the silt to "boil" and be washed away by the water flow. The water flow approaching the pier has its potential energy buffered during the rotation of the blades. The blades also assist the protective cover, providing further protection.

Claims

1. A temporary anti-scouring device for seasonal river bridge piers during the rainy season, characterized in that: It includes a protective sleeve for installation on the surface of the bridge pier, a flow guiding mechanism connected to the protective sleeve and facing the direction of incoming water, and a jet pipe located on the flow guiding mechanism and opposite to the outer periphery of the bottom of the bridge pier.

2. The seasonal river bridge pier temporary scour prevention device as described in claim 1, characterized in that: The flow guiding mechanism is a triangular prism structure, with one side edge of the triangular prism structure set vertically and facing the direction of incoming water, and the sides of the triangular prism structure on both sides of the side edge forming the flow guiding surface.

3. A temporary anti-scouring device for seasonal river bridge piers during the rainy season as described in claim 2, characterized in that: The included angle between the two guide surfaces satisfies the following condition: the water is guided from both sides of the pier and the water is prevented from directly impacting the pier.

4. A temporary anti-scouring device for seasonal river bridge piers during the rainy season as described in claim 3, characterized in that: The guide surface is evenly distributed with several guide grooves, which are arranged laterally on the guide surface.

5. A temporary anti-scouring device for seasonal river bridge piers during the rainy season as described in claim 4, characterized in that: The jet tubes are symmetrically arranged on two guide surfaces. The jet tubes penetrate the guide surfaces and the end face of the triangular prism structure facing the pier. The rear end of the jet tubes is inclined downward and points to the outer peripheral area of ​​the bottom of both sides of the pier. The front end of the jet tubes is equipped with a metal filter screen.

6. A temporary anti-scouring device for seasonal river bridge piers during the rainy season as described in claim 5, characterized in that: The inner diameter of the jet tube gradually decreases, with the front end of the jet tube being the large-diameter end and the rear end being the small-diameter end; one or more jet tubes are distributed on each guide surface.

7. A temporary anti-scouring device for seasonal river bridge piers during the rainy season as described in claim 6, characterized in that: The flow guiding mechanism is a regular triangular prism structure. The back of the regular triangular prism structure is fixedly connected to the protective sleeve by a bolt and nut assembly through a connecting block. The protective sleeve has a U-shaped seat for assembly with the connecting block at one end facing the flow guiding mechanism.

8. A temporary anti-scouring device for seasonal river bridge piers during the rainy season as described in claim 7, characterized in that: The protective sleeve is composed of three arc-shaped plates spliced ​​together. The upper and lower ends of the arc-shaped plates are provided with horizontally arranged arc-shaped connecting plates. The outer surfaces of the arc-shaped connecting plates are respectively provided with butt plates. The butt plates between adjacent arc-shaped plates fit tightly together. The butt plates are provided with through holes for bolts to pass through. Adjacent butt plates are fixedly connected by bolts passing through the through holes and nuts screwed onto the bolts.

9. A temporary anti-scouring device for seasonal river bridge piers during the rainy season as described in claim 8, characterized in that: The inner edge of the arc-shaped connecting plate is coplanar with the inner surface of the arc-shaped plate. Multiple fixed shafts are evenly distributed between the upper and lower ends of the arc-shaped connecting plates on the outer side of the arc-shaped plate. A bushing is rotatably connected to the fixed shaft, and multiple blades are distributed vertically on the outer surface of the bushing.

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