Anti-scouring protection device for bridge pier and abutment

Abstract

The utility model belongs to the technical field of bridge abutment protection, and particularly relates to an anti-scouring protection device for a bridge abutment, which comprises a base, a supporting mechanism is arranged above the base, and a protection mechanism is arranged on the supporting mechanism. When a protection mechanism and device are arranged for protection, auxiliary fixing and positioning are conducted through an auxiliary ejector rod and a positioning nail installed at the lower end of an auxiliary positioning table, when water is drained through a water leakage assembly, a vertical shaft and a rotating vane assembly are pushed to rotate at the same time, and part of impact force of water is consumed; the rotating vane assembly can change the flow direction of part of water flow and prevent the water flow from directly impacting on the supporting mechanism, so that the local scouring effect is weakened, impact on the supporting mechanism is reduced, the supporting mechanism is protected, the protection effect is guaranteed, the protection performance is improved, all-around protection on the pier is achieved, external impact is effectively resisted, and the service life of the pier is prolonged. And better protection is achieved, and practicability is high.

Description

Technical Field

[0001] This utility model belongs to the field of bridge pier protection technology, specifically relating to an anti-erosion protection device for bridge piers. Background Technology

[0002] The foundation of a bridge bears the entire weight of the piers, the bridge span structure (bridge body), and the variable forces acting on the bridge. Piers are one of the foundation structures widely used in hydraulic structures such as bridges, docks, and offshore platforms. They are mainly affected by water erosion and ship collisions. When the substructure of a bridge is built over rivers, streams, or other bodies of water, it is often affected by water erosion, which may lead to erosion and damage to the bridge foundation, thereby affecting the stability and service life of the bridge.

[0003] In existing technologies, scour protection measures for high-pile bridge foundations mostly rely on riprap protection. However, this method is only implemented when significant amounts of sediment near the pier foundation are carried away, threatening bridge safety. This not only risks damaging the piles but also requires regular monitoring and maintenance, resulting in high costs for individual pier protection. Furthermore, even with substantial protective material, the lost skin friction of the pile foundation is difficult to compensate for. Therefore, there is an urgent need to design a scour protection device for bridge piers to address these issues. Utility Model Content

[0004] In view of the shortcomings of the existing technology, this utility model discloses an anti-scouring and protective device for bridge piers and abutments.

[0005] This utility model achieves the above objectives through the following technical solutions:

[0006] A scour protection device for bridge piers includes a base, a support mechanism above the base, and a protective mechanism on the support mechanism.

[0007] The protective mechanism includes an auxiliary positioning platform fixedly mounted on the base, an auxiliary top rod fixedly mounted at the lower end of the auxiliary positioning platform, a slot vertically provided on the auxiliary positioning platform, an installation platform fixedly mounted on the auxiliary positioning platform, positioning nails fixedly and equidistantly mounted at the lower end of the installation platform, water leakage components installed longitudinally and equidistantly within the slot, a support plate fixedly mounted on the base, two sets of connecting plates movably mounted between the auxiliary positioning platform and the support plate, vertical shafts fixedly and equidistantly mounted on the connecting plates, and a rotating blade assembly movably mounted between the two sets of connecting plates.

[0008] Preferably, the support mechanism includes a pier fixedly installed above the base, a pier platform vertically fixedly installed on the pier, a protective plate on the outer surface of the pier, a cover plate fixedly installed on the top of the protective plate, side plates on both sides of the protective plate, a front plate fixedly installed on the front and rear sides of the protective plate, pile protection components on both sides above the base, a pile foundation installed at the lower end of the base, and a sand collection ring fixedly installed on the outer surface of the pile foundation.

[0009] Preferably, the water leakage component includes water leakage pipes arranged longitudinally at equal intervals in the groove, and water leakage holes arranged at equal intervals on the water leakage pipes.

[0010] Preferably, the blade assembly includes a non-powered rotating shaft disposed between two sets of connecting plates, and blades are mounted on the outer surface of the non-powered rotating shaft.

[0011] Preferably, a support column is provided between the side plate and the pier, and a first grate hole is provided on the side plate.

[0012] Preferably, the protective pile assembly includes a sacrificial pile disposed above the base, a fender is fixedly installed at the upper end of the sacrificial pile, and a connecting rod is fixedly disposed on the sacrificial pile.

[0013] The beneficial effects are:

[0014] This utility model discloses an anti-scouring and protective device for bridge piers. Through its protective mechanism, the device is fixed in place by auxiliary top rods and positioning pins installed at the lower end of an auxiliary positioning platform. When water is drained through the leakage component, it simultaneously drives the vertical shaft and rotating blade assembly to rotate, consuming some of the water's impact force. Furthermore, the rotating blade assembly changes the direction of some water flow, preventing direct impact on the support structure, thereby weakening the local scouring effect, reducing the impact on the support structure, protecting it, ensuring the protective effect, improving protective performance, achieving all-round protection for the bridge pier, effectively resisting external impacts, providing better protection, and demonstrating strong practicality. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a front view structural diagram of the present invention;

[0017] Figure 3 This is a schematic diagram of the structure of this utility model from another perspective;

[0018] Figure 4 This is a schematic diagram of the side plate structure of this utility model;

[0019] Figure 5 yes Figure 1 Schematic diagram of the structure at point A;

[0020] Figure 6 This is a schematic diagram of the sacrificial pile structure of this utility model;

[0021] Figure 7 This is a schematic diagram of the blade structure of this utility model.

[0022] In the diagram: 1. Base; 2. Support mechanism; 201. Pier; 202. Foundation; 203. Guard plate; 2031. Cover plate; 204. Side plate; 2041. Support column; 2042. First grate hole; 205. Front plate; 206. Sacrificial pile; 207. Fender; 208. Connecting rod; 209. Pile foundation; 210. Sand collection ring; 3. Protective mechanism; 301. Auxiliary positioning platform; 3011. Auxiliary top rod; 302. Slot; 303. Mounting platform; 304. Positioning nail; 305. Drain pipe; 3051. Drain hole; 306. Support plate; 307. Connecting plate; 308. Vertical shaft; 309. Non-powered rotating shaft; 310. Blade. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. The terms "first", "second", and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] Reference Figure 1-7 One embodiment of this utility model is an anti-erosion protection device for bridge piers, including a base 1, a support mechanism 2 above the base 1, and a protection mechanism 3 on the support mechanism 2.

[0027] In this embodiment: the support mechanism 2 includes a pier 201 fixedly installed above the base 1, a pier cap 202 vertically fixedly installed on the pier 201, a protective plate 203 on the outer surface of the pier 201, a cover plate 2031 fixedly installed on the top of the protective plate 203, side plates 204 on both sides of the protective plate 203, and a front plate 205 fixedly installed on the front and rear sides of the protective plate 203. Pile protection assemblies are provided on both sides above the base 1, and a pile foundation 209 is installed at the lower end of the base 1. A sand-collecting protective ring 210 is fixedly installed on the outer surface of the pile foundation 209. A support column 2041 is provided between the side plate 204 and the pier 201, and a first grate hole 2042 is provided on the side plate 204. The pile protection assembly includes a sacrificial pile 206 installed above the base 1, a fender 207 fixedly installed at the upper end of the sacrificial pile 206, and a connecting rod 208 fixedly installed on the sacrificial pile 206. The function of the sand-collecting ring 210 is as follows: The sand-collecting ring 210 is fitted onto the pile foundation 209. When water flows over the pile foundation 209, it can dissipate the water flow and eliminate eddies, protecting the bottom of the pile foundation 209 from erosion. The sand-collecting ring 210 is a hollow circular ring surrounding the pile foundation 209, and its number is equal to the number of pile foundations 209. The sand-collecting ring 210 is similar to a tire structure. It can be made from appropriately sized scrap tires, with the upper part of the tire structure removed, or the tire having multiple sand-inlet holes. The outer diameter is not greater than the pile spacing, and the inner diameter is not less than the radius of the pile foundation 209. The sacrificial pile 206 mainly serves as both scour and collision protection; in deep water conditions, the height of the sacrificial pile 206 is below the water surface, and the sacrificial pile 206 only serves as scour protection. The function of the fender 207 is to reduce the impact force between the impacting object and the pier 201 and the sacrificial pile 206, thereby reducing the damage to the pier 201. The V-shaped straight line of the retaining pile assembly forms an incoming flow angle α with the water flow direction, where 25°≤α≤60°. This angle effectively blocks most of the incoming flow; if the angle is too large or too small, the effect is not as good. The connecting rod 208 serves both as a connection and for shock absorption. The main plate 205 is equipped with grate holes.

[0028] In this embodiment: the protective mechanism 3 includes an auxiliary positioning platform 301 fixedly mounted on the base 1. An auxiliary top rod 3011 is fixedly installed at the lower end of the auxiliary positioning platform 301. A slot 302 is vertically provided on the auxiliary positioning platform 301. An installation platform 303 is fixedly installed on the auxiliary positioning platform 301. Positioning nails 304 are fixedly and equidistantly installed at the lower end of the installation platform 303. A water leakage component is installed longitudinally and equidistantly within the slot 302. A support plate 306 is fixedly installed on the base 1. Two sets of connecting plates 307 are movably installed between the auxiliary positioning platform 301 and the support plate 306. A vertical shaft 308 is fixedly and equidistantly installed on the connecting plate 307. A rotating blade assembly is movably installed between the two sets of connecting plates 307. The water leakage component includes a water leakage pipe 305 longitudinally and equidistantly provided within the slot 302. Water leakage holes 3051 are equidistantly provided on the water leakage pipe 305. The rotating blade assembly includes a non-powered rotating shaft 309 disposed between two sets of connecting plates 307, with blades 310 mounted on the outer surface of the non-powered rotating shaft 309. Because the end of the drain pipe 305 is closed and the water flow has high pressure, it overflows at a certain velocity through several drain holes 3051 on the flow-facing surface of the drain pipe 305, thereby offsetting the intensity of the incoming water flow and playing a role in turbulence and flow reduction. Simultaneously, water that does not enter the drain pipe 305 flows along the drain pipe 305 to the rotating blade assembly for dissipation, preventing the water flow from directly scouring the bridge pier 201. The drain holes 3051 are of uniform size and are evenly distributed on the flow-facing surface of each drain pipe 305; however, the drain holes 3051 can also be of varying sizes.

[0029] Working principle: In use, the auxiliary positioning platform 301 is first fixed and positioned by the auxiliary top rod 3011 and positioning nail 304 installed at the lower end. When the water flows through the leakage component, it overflows at a certain speed through several leakage holes 3051 on the flow-facing surface of the leakage pipe 305, thereby offsetting the intensity of the incoming water flow and playing a role in turbulence and flow reduction. At the same time, it drives the vertical shaft 308 and the rotating blade assembly to rotate, thereby consuming part of the water impact force. The rotating blade assembly can also change the direction of part of the water flow, preventing the water flow from directly impacting the support mechanism 2, thereby weakening the local scouring effect and reducing the impact on the support mechanism 2. Meanwhile, the sacrificial pile 206, fender 207, and connecting rod 208 reduce the impact force between the impacting object and the pier 201 and the sacrificial pile 206, thereby reducing the damage of the impacting object to the pier 201, ensuring stability and load-bearing capacity, reducing the impact on the pier 201, and playing a role in protecting the pier 201.

[0030] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An erosion protection device for a bridge pier, characterized by: Includes a base (1), a support mechanism (2) is provided above the base (1), and a protective mechanism (3) is provided on the support mechanism (2); The protective mechanism (3) includes an auxiliary positioning platform (301) fixedly mounted on the base (1). An auxiliary top rod (3011) is fixedly installed at the lower end of the auxiliary positioning platform (301). A slot (302) is vertically provided on the auxiliary positioning platform (301). An installation platform (303) is fixedly installed on the auxiliary positioning platform (301). Positioning nails (304) are fixedly and equidistantly installed at the lower end of the installation platform (303). Water leakage components are installed longitudinally and equidistantly in the slot (302). A support plate (306) is fixedly installed on the base (1). Two sets of connecting plates (307) are movably installed between the auxiliary positioning platform (301) and the support plate (306). A vertical shaft (308) is fixedly and equidistantly installed on the connecting plate (307). A rotating blade assembly is movably installed between the two sets of connecting plates (307).

2. A scour protection device for a bridge pier according to claim 1, characterized in that: The support mechanism (2) includes a pier (201) fixedly installed above the base (1), a pier (202) vertically fixedly installed on the pier (201), a protective plate (203) provided on the outer surface of the pier (201), a cover plate (2031) fixedly installed on the top of the protective plate (203), side plates (204) provided on both sides of the protective plate (203), a front plate (205) fixedly installed on the front and rear sides of the protective plate (203), pile protection components provided on both sides above the base (1), a pile foundation (209) installed at the lower end of the base (1), and a sand collection ring (210) fixedly installed on the outer surface of the pile foundation (209).

3. A scour protection device for a bridge pier according to claim 1, wherein: The water leakage component includes a water leakage pipe (305) arranged longitudinally at equal intervals in the slot (302), and water leakage holes (3051) are arranged at equal intervals on the water leakage pipe (305).

4. A scour protection device for a bridge pier according to claim 1, wherein: The blade assembly includes a non-powered rotating shaft (309) disposed between two sets of connecting plates (307), and blades (310) are mounted on the outer surface of the non-powered rotating shaft (309).

5. A scour protection device for a bridge pier according to claim 2, wherein: A support column (2041) is provided between the side plate (204) and the pier (201), and a first grate hole (2042) is provided on the side plate (204).

6. A scour protection device for a bridge pier according to claim 2, wherein: The protective pile assembly includes a sacrificial pile (206) disposed above the base (1), a fender (207) is fixedly installed on the upper end of the sacrificial pile (206), and a connecting rod (208) is fixedly disposed on the sacrificial pile (206).

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