Pier anti-scouring device capable of self-adapting to water flow direction

Abstract

The utility model belongs to the field of local scouring protection of bridge foundations, and discloses a bridge pier anti-scouring device self-adaptive to the water flow direction, which comprises an anti-scouring assembly and a flow guide assembly, and is formed by splicing and connecting a first pile casing and a second pile casing to form a complete pile casing structure which is sleeved on a bridge pier body and can rotate freely; a scour baffle of the anti-scour assembly is located on one side of the pier body, and a diversion tail wing of the diversion assembly is located on the other side of the pier body. When water flows to the front portion of the pier body, the water scours the baffles and then flows to the two sides to be dispersed, downward flowing water flow is reduced, and the strength of front horseshoe-shaped vortexes is effectively weakened so as to weaken the scouring depth in front of the pier; when the water flow direction deflects, the transverse component of the water flow acting force on the two sides of the empennage changes, the flow guide empennage deflects and flexibly complies with the water flow direction due to the change of the transverse component, and meanwhile the flushing baffle can be driven to deflect, so that the flushing baffle can always deflect in the water flow direction to work under the optimal working condition; and the anti-scouring capability is improved.

Description

Technical Field

[0001] The utility model belongs to the field of local scouring protection of bridge foundations, and in particular relates to a bridge pier scouring protection device which is adaptive to the direction of water flow. Background Art

[0002] In recent years, the number of bridges has increased significantly, and bridge disasters have become increasingly frequent. According to relevant statistics, one of the main causes of bridge disasters is water damage. A major cause of bridge pier water damage is the local scouring effect of water on the piers. Therefore, it is very important to reduce the local scouring effect of bridge piers.

[0003] There are three main causes of local scour on bridge piers: First, forward water flow: When water encounters a bridge pier, it creates vortices around it. These vortices sweep up sediment, forming scour pits. Second, downward water flow: When water encounters a bridge pier, it creates a downward jet, which then scours the sediment at the base of the pier, forming a scour pit. Third, tail vortex: After the water flows around the pier, it creates a horseshoe-shaped vortex, which carries away the sediment behind the pier, forming a scour pit. There are two types of protection measures for local scour on bridge piers: active and passive. Active protection primarily reduces local scour by disrupting the flow characteristics around the pier, disrupting vortices, and typically employing retaining rings and sacrificial piles. Passive protection aims to enhance the scour resistance around the pier foundation, typically employing methods such as riprap and foundation expansion. For example, Chinese patent number CN109235370B discloses an assembled bridge pier anti-scour device with a diversion-type baffle. Although it can reduce the local scouring effect of the bridge pier, it has certain limitations when facing working conditions where the direction of the water flow is deflected. When the direction of the water flow is deflected, the anti-scour plate is fixed on the fixed piles on the riverbed and cannot be deflected in the direction of the water flow, resulting in its anti-scour capability being greatly reduced.

[0004] It can be seen that the existing bridge pier anti-scour device, due to the fixed installation direction of the anti-scour plate, cannot be deflected according to the direction of water flow, thereby greatly reducing its anti-scour ability. Utility Model Content

[0005] The utility model provides a bridge pier anti-scour device that is adaptive to the direction of water flow, so as to solve the technical problem that the existing bridge pier anti-scour device has a fixed installation direction of the anti-scour plate and cannot be deflected according to the direction of water flow, thereby greatly reducing its anti-scour ability.

[0006] In order to achieve the above purpose, the present invention adopts the following technical contents:

[0007] A bridge pier anti-scour device that is self-adaptive to water flow direction, comprising an anti-scour component and a diversion component;

[0008] The anti-scour assembly includes a connected scour baffle and a first casing;

[0009] The guide assembly includes a second casing and a guide tail connected to each other;

[0010] The first casing and the second casing are spliced ​​together to form a complete casing structure, which is movably sleeved on the pier body, with a gap reserved between the casing and the pier body;

[0011] The scouring baffle is located on one side of the pier body and is used to prevent water from scouring the pier body.

[0012] The guide tail is located on the other side of the pier body. The guide tail can be deflected under the action of water flow, thereby driving the scouring baffle to deflect in the direction of water flow.

[0013] Furthermore, the top and bottom of the complete casing structure are both provided with retaining rings; the retaining rings are sleeved on the pier body.

[0014] Furthermore, the retaining ring is made of stainless steel.

[0015] Furthermore, the scour baffle is connected to the first casing via a T-shaped plate, and the scour baffle, the first casing and the T-shaped plate are welded into an integrated structure.

[0016] Furthermore, the scour baffle is a V-shaped steel plate, and the opening of the V-shaped baffle is arranged toward the pier body.

[0017] Furthermore, the surface of the scouring baffle is coated with a rust-proof and hydrophobic layer.

[0018] Furthermore, a plurality of support rods are provided between the guide fin and the second casing, and the guide fin, the second casing and the support rods are welded into an integrated structure.

[0019] Furthermore, the guide tail includes two groups of symmetrical blades and is arranged in the middle part of the second casing.

[0020] Furthermore, the first protective tube and the second protective tube are connected by bolts.

[0021] Furthermore, the scour baffle is longer than the first casing.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] The utility model provides a bridge pier anti-scour device that is adaptive to the direction of water flow. The device comprises a connected anti-scour component and a diversion component; the anti-scour component and the diversion component are spliced ​​and connected by a first casing and a second casing to form a complete casing structure that is sleeved on the bridge pier body and can rotate freely; the scour baffle of the anti-scour component is located on one side of the bridge pier body, and the diversion tail of the diversion component is located on the other side of the bridge pier body; when water flows to the front of the bridge pier body, the scour baffle will disperse the water to both sides, reduce the underwater flow, and effectively weaken the strength of the front horseshoe vortex to weaken The depth of scour in front of the pier; when water flows through the tail guide tail, it can stabilize the water flow, reduce the vortex behind the pier, and thus reduce the scour behind the pier; when the water flow direction is deflected, the lateral component of the water flow force on both sides of the tail changes. The change in the lateral component causes the guide tail to deflect and flexibly follow the direction of water flow. At the same time, it can drive the scour baffle to deflect, so that the scour baffle can always deflect in accordance with the direction of water flow, work in the best working conditions, and improve the anti-scour capability; the structure and principle of this device are simple, easy to disassemble and operate and maintain, and has good promotion and application value.

[0024] Preferably, in the present invention, the provision of the retaining ring enhances the connection stability between the casing structure and the pier body, prevents the casing structure from moving up and down, and improves the overall stability and durability.

[0025] Further preferably, in the present invention, the retaining ring made of stainless steel has good corrosion resistance and strength, and can be used for a long time in a harsh environment without being easily damaged.

[0026] Preferably, in the present invention, the design of the T-shaped plate and the welded integrated structure improves the connection strength between the scour baffle and the first casing, ensuring the stability and reliability of the device under complex water flow conditions.

[0027] Preferably, in the present invention, the scour baffle is designed with a V-shaped steel plate to better disperse the impact force of the water flow and reduce direct scouring of the pier body. At the same time, the V-shaped opening faces the pier body, which helps to guide the flow direction of the water and reduce scouring.

[0028] Preferably, in the present invention, the application of the rust-proof hydrophobic layer prolongs the service life of the scour baffle and prevents performance degradation due to rust. At the same time, the hydrophobic layer can reduce the retention of water on the baffle surface and improve the anti-scour effect.

[0029] Preferably, in the present invention, the design of the integrated support rod and welding structure ensures the stability and reliability of the guide fin during deflection, and prevents performance degradation due to loose connections.

[0030] Preferably, in the present invention, the guide tail adopts a design of two sets of symmetrical blades so that the guide tail can be more evenly stressed under the action of water flow, thereby improving the sensitivity and accuracy of deflection, thereby better adapting to changes in the direction of water flow.

[0031] Preferably, in the present invention, the first casing and the second casing are connected by bolts, which is convenient for installation and maintenance, while ensuring a tight connection between the first casing and the second casing, thereby improving the stability of the overall structure.

[0032] Preferably, in the present invention, the design of the scouring baffle being longer than the first casing can more effectively prevent the scouring of the pier body by the water flow, thereby improving the anti-scouring effect and maintaining the balance and stability of the overall structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 A schematic structural diagram of a bridge pier anti-scour device that is adaptive to water flow direction provided by an embodiment of the utility model;

[0034] Figure 2 This is a front view of a bridge pier anti-scour device that is adaptive to water flow direction provided by an embodiment of the utility model.

[0035] Reference numerals:

[0036] 1- pier body, 2- guard ring, 3- anti-scour assembly, 3-1- scour baffle, 3-2- first casing, 3-3- T-plate, 4- diversion assembly, 4-1- second casing, 4-2- diversion tail, 4-3- support rod, 5- bolt. DETAILED DESCRIPTION

[0037] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention more clearly understood, the present invention is further described in detail in the following specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0038] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0039] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are intended to fall within the scope of protection of the present invention.

[0040] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0041] In the description of the embodiments of the present invention, it should be noted that if the terms "upper," "lower," "horizontal," "inner," etc. appear to indicate an orientation or positional relationship, they are based on the orientation or positional relationship shown in the accompanying drawings, or are the orientation or positional relationship in which the product of the present invention is typically placed when in use. These terms are used solely to facilitate the description of the present invention and to simplify the description. They do not indicate or imply that the device or component referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first," "second," etc. are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0042] In addition, if the term "horizontal" appears, it does not mean that the component must be absolutely horizontal, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0043] In the description of the embodiments of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0044] The present invention is described in further detail below with reference to the accompanying drawings:

[0045] Example

[0046] As mentioned in the background technology, although the existing anti-scour devices can reduce the local scouring effect of bridge piers, they have certain limitations when facing working conditions where the direction of water flow is deflected. When the direction of water flow is deflected, the anti-scour plates are fixed on the fixed piles on the riverbed and cannot be deflected in the direction of water flow, which greatly reduces their anti-scour ability.

[0047] In order to solve the above problems, the present embodiment provides a bridge pier anti-scouring device that is adaptive to the direction of water flow. The device arranges multiple sets of tensioning and adsorption components in the circumferential direction of the wafer. The tensioning and adsorption components can tension the patch film outward during the chip picking process, thereby facilitating the ejector pin to lift the chip to be picked up, improving the picking efficiency, and avoiding damage to the chip.

[0048] like Figure 1 and Figure 2 As shown, this embodiment provides a bridge pier anti-scour device that is adaptive to the direction of water flow, and the device is installed near the riverbed.

[0049] The anti-scour device specifically includes a retaining ring 2 mounted on the pier body 1. In this embodiment, the pier body 1 is installed with two upper and lower retaining rings 2; the retaining rings 2 are made of stainless steel; and the retaining rings 2 are installed near the riverbed.

[0050] An anti-scour component 3 is installed at the front of the pier body 1, and a diversion component 4 is installed at the rear of the pier body 1.

[0051] In this embodiment, the retaining ring 2 is made of a stainless steel ring with a certain thickness.

[0052] The anti-scour assembly 3 comprises a V-shaped anti-scour baffle 3-1 welded to the first casing 3-2 via a T-shaped plate 3-3. The anti-scour baffle 3-1 is made of steel plate and coated with a rust-proof and hydrophobic layer. The scour baffle 3-1 is longer than the first casing 3-2, providing some protection for the first casing 3-2.

[0053] The guide assembly 4 is formed by welding the guide tail 4-2 to the second casing 4-1 through the support rod 4-3. The guide tail 4-2 is preferably welded to the middle part of the second casing 4-1. The guide tail 4-2 is composed of four symmetrical blades and has a tail shape similar to a bow and arrow.

[0054] Among them, the first casing 3-2 and the second casing 4-1 adopt semicircular casings with the same structure. Corresponding bolt holes are reserved at the connection points of the first casing 3-2 and the second casing 4-1, and are fixedly connected by bolts 5. After connection, a complete casing is formed. The casing is movably sleeved on the pier body 1, and a gap is reserved between the casing and the pier body 1 to facilitate the rotation of the anti-scour assembly 3; the two guard rings 2 are respectively connected to the top and the top of the casing to effectively protect the casing, and the bottom guard ring 2 can provide support for the casing.

[0055] This embodiment provides a bridge pier anti-scour device that is adaptive to water flow direction. The specific working principle is as follows:

[0056] When water flows toward the front of the pier body 1, the scour baffle 3-1 located in front of the pier body 1 disperses the water flow to the sides, reducing the submerged current and effectively weakening the horseshoe-shaped vortex in front of the pier, thereby reducing the depth of scour in front of the pier. The impact of the water flow is transmitted to the first casing 3-2 via the T-shaped plate 3-3, dispersing the impact force over a larger area and reducing the damage caused by the water flow. The integrated design of the anti-scour baffle 3-1 and the first casing 3-2 enhances the structural strength of the anti-scour assembly 3 and strengthens its anti-scour capability. The diversion assembly 4, located at the rear of the pier body 1, stabilizes the water flow when it passes through the tail diversion fins 4-2, reducing vortices behind the pier and, consequently, scour behind the pier. When the flow direction deflects, the lateral component of the force acting on both sides of the fins changes. This change in lateral component causes the diversion fins 4-2 to deflect, flexibly adapting to the flow direction. This simultaneously drives the anti-scour assembly 3 to deflect, ensuring that the scour baffle 3-1 always operates at optimal conditions, significantly improving efficiency. The support rods 4-3 enhance the overall stability of the rear structure. The anti-scour assembly 3 and diversion assembly 4 are connected by bolts 4. The first and second casings 3-2 and 4-1 are flexibly mounted on the pier body 1, mounted between the two retaining rings 2. A gap is left between the casings and the outer wall of the pier body 1, enhancing the overall strength of the device. Furthermore, the device can also deflect when the flow direction deflects, preventing it from losing optimal operation when the flow direction changes (optimal operation occurs when the flow direction is directly facing the device).

[0057] The utility model only plays an anti-scouring role and is not a load-bearing structure. It will not affect the main structure of the pier. The device is easy to industrialize and has a simple installation structure. It can be quickly disassembled and assembled using bolts. The construction is convenient and fast, and it is also convenient for later operation and maintenance.

[0058] The above embodiment is only one of the implementation methods that can realize the technical solution of the present invention. The scope of protection claimed by the present invention is not limited only to this embodiment, but also includes within the technical scope disclosed by the present invention, any changes, replacements and other implementation methods that can be easily thought of by any technician familiar with this technical field.

Claims

1. A bridge pier anti-scour device that is adaptive to water flow direction, characterized in that: It includes an anti-scour component (3) and a diversion component (4); The anti-scour assembly (3) comprises a connected scour baffle (3-1) and a first casing (3-2); The flow guide assembly (4) comprises a second casing (4-1) and a flow guide tail (4-2) connected to each other; The first casing (3-2) and the second casing (4-1) are spliced ​​together to form a complete casing structure, and the complete casing structure is movably sleeved on the pier body (1), with a gap reserved between the casing structure and the pier body (1); The scouring baffle (3-1) is located on one side of the pier body (1) and is used to prevent water from scouring the pier body (1); The guide tail wing (4-2) is located on the other side of the pier body (1), and the guide tail wing (4-2) can be deflected under the action of water flow, thereby driving the scouring baffle (3-1) to deflect in the direction of the water flow.

2. The bridge pier anti-scour device with adaptive water flow direction according to claim 1 is characterized in that: The top and bottom of the complete casing structure are both provided with retaining rings (2); the retaining rings (2) are sleeved on the pier body (1).

3. The bridge pier anti-scour device capable of adapting to water flow direction according to claim 2, characterized in that: The retaining ring (2) is made of stainless steel.

4. The bridge pier anti-scour device capable of adapting to water flow direction according to claim 1, characterized in that: The scouring baffle (3-1) is connected to the first casing (3-2) via a T-shaped plate (3-3), and the scouring baffle (3-1), the first casing (3-2) and the T-shaped plate (3-3) are welded into an integrated structure.

5. The bridge pier anti-scour device capable of adapting to water flow direction according to claim 1, characterized in that: The scour baffle (3-1) is a V-shaped steel plate, and the opening of the V-shaped baffle is arranged toward the pier body (1).

6. The bridge pier anti-scour device capable of self-adapting to water flow direction according to claim 1, characterized in that: The surface of the scouring baffle (3-1) is coated with a rust-proof hydrophobic layer.

7. The bridge pier anti-scour device capable of self-adapting to water flow direction according to claim 1, characterized in that: A plurality of support rods (4-3) are provided between the guide tail wing (4-2) and the second casing (4-1), and the guide tail wing (4-2), the second casing (4-1) and the support rods (4-3) are welded into an integrated structure.

8. The bridge pier anti-scour device capable of self-adapting to water flow direction according to claim 1, characterized in that: The guide tail (4-2) comprises two groups of symmetrical blades and is arranged in the middle portion of the second casing (4-1).

9. The bridge pier anti-scour device capable of adapting to water flow direction according to claim 1, characterized in that: The first protective tube (3-2) and the second protective tube (4-1) are connected via bolts (5).

10. The bridge pier anti-scour device capable of self-adapting to water flow direction according to claim 1, characterized in that: The scouring baffle (3-1) is longer than the first casing (3-2).

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