A bridge pier anti-collision device and design method thereof

Abstract

The present application discloses a bridge pier anti-collision device and its design method, which belongs to the field of bridge anti-collision technology. It can solve the problem that the existing bridge pier anti-collision device is attached to the bridge pier for installation, needs to be directly connected to the bridge pier, or drills or digs holes on the bridge pier, which will damage the bridge pier. The bridge pier anti-collision device includes an anti-collision plate and an energy absorption component; an anti-collision plate is set on each side of the bridge pier, and the surfaces of the two anti-collision plates are perpendicular to the extension direction of the road; a group of energy absorption components are set on each side of the anti-collision plate; the energy absorption component is fixed to the ground, and the two sides are respectively slidably connected to the same side of the two anti-collision plates, and can undergo elastic deformation. The present application is not attached to the bridge pier, but is independently set up, does not need to be installed on the bridge pier, is not connected to the bridge pier, does not require drilling or digging holes on the bridge pier, does not destroy the structure of the bridge pier, and will not damage the bridge pier during installation.

Description

Technical Field

[0001] The present application relates to the technical field of bridge anti-collision technology, and in particular to a bridge pier anti-collision device and a design method thereof. Background Art

[0002] A bridge is a structure that spans a river, strait, road, or other obstacle, typically consisting of piers and a deck. Piers are a crucial component of a bridge structure, and damage to them can compromise the safety of the bridge. For mountain bridges exposed to rockfall impacts and urban cross-line bridges exposed to vehicle impacts, protective measures, such as anti-collision devices, are generally required to ensure the safety of the bridge under extreme impact loads.

[0003] Current bridge pier anti-collision devices can enhance the structure's impact resistance by reinforcing the existing structure. For example, a steel casing can be installed outside the existing bridge piers, and concrete can be poured between the pier's outer wall and the steel casing to improve the pier's impact resistance. With the steel casing and concrete pouring method, the concrete directly connects to the pier and clings to it, causing damage to the pier when impacted. Alternatively, a single damper, metal material, composite material, foam material, or a combination of several energy-dissipating materials (components) can be used to absorb external impact forces and provide structural protection. For example, patent application number 201610748532.2, titled "A Bridge Pier Anti-Collision Module," comprises a fixed layer, a bead layer, a coarse spring layer, a dense spring layer, and a soft rubber pier layer. The fixed layer has a flexible connection to the pier on the inside. As shown in the patent's drawings, the connection between the anti-collision module and the pier requires drilling or excavating holes in the pier, which can damage the pier.

[0004] When the existing bridge pier anti-collision device is installed, it is attached to the bridge pier for installation and needs to be directly connected to the bridge pier, or a hole is drilled or dug on the bridge pier, which will damage the bridge pier. Summary of the Invention

[0005] The embodiments of the present application provide a bridge pier anti-collision device and a design method thereof, thereby solving the problem that the existing bridge pier anti-collision device, when installed, needs to be attached to the bridge pier for setting, needs to be directly connected to the bridge pier, or drills or digs holes in the bridge pier, which may damage the bridge pier.

[0006] In order to achieve the above-mentioned purpose, the technical solution of the embodiment of the present invention is:

[0007] In the first aspect, an embodiment of the present invention provides a bridge pier anti-collision device, comprising an anti-collision plate and an energy absorbing assembly; one anti-collision plate is respectively arranged on both sides of the bridge pier, and the surfaces of the two anti-collision plates are perpendicular to the extension direction of the road; one group of the energy absorbing assemblies is respectively arranged on both sides of the anti-collision plate; the energy absorbing assembly is fixed to the ground, and both sides are slidingly connected to the same side of the two anti-collision plates, and can undergo elastic deformation.

[0008] In combination with the first aspect, in a possible implementation, the energy absorbing assembly includes a column, an elastic member and a baffle; one column is fixed to the ground on both sides of the pier; two baffles are hinged on each column; the elastic member is arranged between the surfaces of the two baffles facing away from the pier; and the surface of the baffle facing the pier is slidably connected to the anti-collision plate.

[0009] In combination with the first aspect, in a possible implementation, at least one slide groove is provided on the surface of the baffle facing the bridge pier; the extension direction of the slide groove is perpendicular to the column; and the end face of the anti-collision plate is provided with a sliding part that cooperates with the slide groove.

[0010] In combination with the first aspect, in a possible implementation, the sliding member includes a column and a sphere; one end of the column is fixed to the end surface of the anti-collision plate, and the other end is rotatably connected to the sphere; the sphere cooperates with the slide groove and can roll along the slide groove.

[0011] In combination with the first aspect, in a possible implementation, a plurality of limiting members are provided on the bottom surface of each sliding groove; the limiting members are configured to limit the sliding member from moving in a direction away from the column.

[0012] In combination with the first aspect, in a possible implementation, the limiting member is a right-angled triangle block; the surface where one right-angled side of the right angle is located is located at the bottom surface of the sliding groove, and the surface where the other right-angled side is located faces the column.

[0013] In combination with the first aspect, in a possible implementation manner, the elastic member is a spring.

[0014] In combination with the first aspect, in a possible implementation, the bridge pier anti-collision device further includes a casing; the casing is sleeved outside the anti-collision plate and the energy absorbing assembly.

[0015] In combination with the first aspect, in a possible implementation, the two groups of energy absorbing components are symmetrically arranged along a straight line perpendicular to the surface of the anti-collision plate.

[0016] In a second aspect, an embodiment of the present invention provides a method for designing a bridge pier anti-collision device, which is used to design the bridge pier anti-collision device described above, comprising:

[0017] Determining the structural parameters of the bridge pier, the mass of the collision object, and the impact velocity to obtain a design collision force between the collision object and the bridge pier;

[0018] According to the structural parameters of the bridge pier and the designed collision force, the size, thickness and material of the collision plate and the baffle are determined;

[0019] According to the arrangement of the anti-collision plate and the requirements for impact deformation, the designed impact force is taken as the maximum interception force when the anti-collision plate reaches the designed deformation in the direction perpendicular to its own surface, the stiffness coefficient of the elastic member is calculated, and the elastic member is selected according to the stiffness coefficient;

[0020] The baffle, the elastic member, and the anti-collision plate are installed.

[0021] One or more technical solutions provided in the embodiments of the present invention have at least the following technical effects or advantages:

[0022] An embodiment of the present invention provides a bridge pier anti-collision device comprising an anti-collision plate and an energy-absorbing assembly. A collision plate is provided on each side of the bridge pier, with the surfaces of both plates oriented perpendicular to the direction of the road. A set of energy-absorbing assemblies is provided on each side of the collision plate. The energy-absorbing assemblies are fixed to the ground, with their two sides slidingly connected to the same side of the two collision plates and capable of elastic deformation.

[0023] In practice, the two sides of the bridge pier located in the front and rear of the extension direction of the road will be hit, and a crash plate is set on each of the two sides, and a group of energy-absorbing components are set on each side of the crash plate to protect the bridge pier. The surfaces of the two crash plates are perpendicular to the extension direction of the road, so when the bridge pier is hit, the enclosure formed by the crash plate and the energy-absorbing component will first hit the crash plate. Since the two sides of the energy-absorbing component are respectively connected to the same side of the two crash plates in a sliding manner, the crash plate moves under the impact, causing the energy-absorbing component to undergo elastic deformation, hindering the movement of the crash plate. The entire bridge pier crash protection device resists and disperses the impact force, preventing damage to the bridge pier. The bridge pier crash protection device of the present application is not attached to the bridge pier, but is independently set up. It does not need to be installed on the bridge pier, is not connected to the bridge pier, and does not require drilling or digging holes on the bridge pier. It does not destroy the structure of the bridge pier and will not damage the bridge pier during installation. Under the joint action of the anti-collision plate and the energy-absorbing component, when a collision occurs, the anti-collision plate is hit, and the elastic deformation of the energy-absorbing component is determined by calculation, so that the anti-collision plate can be hit without touching the bridge pier, thereby resisting and dispersing the impact force, and the impact force will not damage the bridge pier. It is an efficient, low-cost, simple to construct, non-destructive bridge pier anti-collision device that can protect the safety of bridge piers under extreme impact loads such as vehicles and falling rocks. At the same time, the bridge pier anti-collision device can be quickly repaired and replaced after damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 Schematic diagram of the structure of the bridge pier anti-collision device provided in the embodiment of the present application Figure 1 ;

[0026] Figure 2 Schematic diagram of the structure of the bridge pier anti-collision device provided in the embodiment of the present application Figure 2 ;

[0027] Figure 3 Schematic diagram of the structure of the energy absorption component provided in the embodiment of the present application Figure 1 ;

[0028] Figure 4 Schematic diagram of the structure of the energy absorption component provided in the embodiment of the present application Figure 2 ;

[0029] Figure 5 A schematic diagram of the structure of the anti-collision plate provided in an embodiment of the present application;

[0030] Figure 6 This is a calculation symbol identification diagram of the bridge pier anti-collision device provided in an embodiment of the present application.

[0031] Icons: 1-anti-collision plate; 11-sliding part; 2-energy absorption component; 21-elastic part; 22-baffle; 23-chute; 24-limiting part; 25-column; 4-casing; 5-bridge pier. DETAILED DESCRIPTION

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0033] In the description of the embodiments of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. The terms "first", "second" and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be a communication between the two components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present invention can be understood according to the specific circumstances.

[0034] Please refer to Figure 1 and Figure 2 As shown, an embodiment of the present invention provides a bridge pier anti-collision device, including an anti-collision plate 1 and an energy absorbing assembly 2. An anti-collision plate 1 is provided on each side of the bridge pier 5, and the surfaces of the two anti-collision plates 1 are perpendicular to the extension direction of the road. Generally, the two anti-collision plates 1 are provided in parallel. The bridge pier anti-collision device of the present application is mainly aimed at the bridge pier 5 provided on the lane for traveling vehicles. The collision direction is determined, so the two anti-collision plates 1 are provided on both sides of the bridge pier 5, and the two sides are located in front and rear of the extension direction of the road. A group of energy absorbing assemblies 2 are provided on each side of the anti-collision plate 1. The energy absorbing assembly 2 is fixed to the ground, and the two sides are respectively slidably connected to the same side of the two anti-collision plates 1, and can undergo elastic deformation. The elastic deformation is generally consistent with the direction of the impact force.

[0035] In practice, the two sides of the bridge pier 5 located in the front and rear of the extension direction of the road will be hit. A collision plate 1 is provided on each of the two sides, and a group of energy-absorbing components 2 are provided on each side of the collision plate 1 to protect the bridge pier 5. The surfaces of the two collision plates 1 are perpendicular to the extension direction of the road. Therefore, when the bridge pier 5 is hit, the enclosure formed by the collision plates 1 and the energy-absorbing components 2 will first hit the collision plates 1. Since the two sides of the energy-absorbing components 2 are respectively slidably connected to the same side of the two collision plates 1, the collision plate 1 moves under the impact, causing the energy-absorbing components 2 to undergo elastic deformation, hindering the movement of the collision plates 1. The entire bridge pier collision prevention device resists and disperses the impact force, preventing the bridge pier 5 from being damaged. The bridge pier collision prevention device of the present application is not attached to the bridge pier 5, but is independently provided. It does not need to be installed on the bridge pier 5, is not connected to the bridge pier 5, and does not require drilling or digging holes on the bridge pier 5. It does not destroy the structure of the bridge pier 5 and will not damage the bridge pier 5 during installation. Under the joint action of the anti-collision plate 1 and the energy absorbing component 2, when impacted, the anti-collision plate 1 is hit, and the elastic deformation of the energy absorbing component 2 is determined by calculation, so that the anti-collision plate 1 can be hit without touching the bridge pier 5, thereby resisting and dispersing the impact force, and the impact force will not damage the bridge pier 5. It is a highly efficient, low-cost, simple to construct, non-destructive bridge pier anti-collision device, which can protect the safety of the bridge pier 5 under extreme impact loads such as vehicles and falling rocks. At the same time, the bridge pier anti-collision device can be quickly repaired and replaced after damage.

[0036] like Figures 1 to 4 As shown, the energy absorbing assembly 2 includes a column 25, an elastic member 21 and a baffle 22. A column 25 is fixed to the ground on both sides of the pier 5. Two baffles 22 are hinged on each column 25 to form a V shape. For example, a rotating ring is provided on the side of the baffle 22, which is sleeved on the column 25 and can rotate along the central axis of the column 25. An elastic member 21 is provided between the surfaces of the two baffles 22 facing away from the pier 5. The surface of the baffle 22 facing the pier 5 is slidably connected to the anti-collision plate 1.

[0037] When the bridge pier anti-collision device is subjected to an impact force, the impact plate 1 is first subjected to the force, the energy absorbing assembly 2 is arranged between the two impact plates 1, the baffle 22 is subjected to the force, and the two baffles 22 are hinged to rotate relative to each other, the elastic member 21 is compressed and then rebounds, and because the side of the baffle 22 facing away from the elastic member 21 is in sliding connection with the impact plate 1, the impact plate 1 slides relative to the baffle 22. The energy absorbing assembly 2 of the embodiment of the present application cooperates with the impact plate 1 to effectively resist and disperse the impact force.

[0038] During actual installation, a column 25 is first set on both sides of the pier 5, and then two baffles 22 are hinged on each column 25. Then, an elastic member 21 is set between the two baffles 22 of the same energy absorbing component 2, and an anti-collision plate 1 is set between the two baffles 22 of different energy absorbing components 2.

[0039] like Figure 4 As shown, each baffle 22 is provided with at least one slide groove 23 on its surface facing the pier 5. The slide grooves 23 extend perpendicularly to the pillars 25. The end surface of the impact plate 1 is provided with a sliding member 11 that mates with the slide groove 23. The sliding member 11 is disposed within the slide groove 23. When the pier impact protection device is subjected to an impact force, the sliding member 11 can slide relative to the slide groove 23, thereby causing the impact plate 1 to slide relative to the energy absorbing assembly 2.

[0040] The number of the chute 23 can be one, two, three, etc. Figure 4 A schematic structural diagram showing five slide grooves 23 is shown.

[0041] Optionally, the sliding member 11 includes a column and a sphere. One end of the column is fixed to the end surface of the anti-collision plate 1, and the other end is rotatably connected to the sphere. The sphere engages with the chute 23 and can roll along the chute 23. Generally, the impact duration is very short, and the bridge pier anti-collision device needs to quickly resist and disperse the impact force within a short period of time. The sliding member 11 of the present application enables the sphere to roll quickly within the chute 23 and is not easily stuck, thus quickly and effectively enabling the bridge pier anti-collision device to resist and disperse the impact force.

[0042] Continue to refer to Figure 4 As shown, the bottom surface of each slide groove 23 is provided with a plurality of limit members 24. The limit members 24 are configured to limit the sliding member 11 from sliding in a direction away from the column 25, thereby preventing the anti-collision plate 1 from sliding back and avoiding giving a rebound force to the impacting object.

[0043] Of course, a spring can be provided under each stopper 24 to further facilitate the rolling of the slider 11 within the chute 23. Furthermore, when the impact plate 1 needs to be removed from the baffle 22 after being subjected to an impact force, the stopper 24 is pressed, and the slider 11 is freed and allowed to roll away from the hinge axis. After the impact plate 1 is removed, undamaged components such as the baffle 22 and the elastic member 21 can be reused.

[0044] The stopper 24 is a right-angled triangle. One side of the right angle is located at the bottom of the chute 23, while the other side faces the upright 25. When impacted, the slider 11 slides up along the hypotenuse and then gets caught by the right-angle side, achieving the desired position. The stopper 24 provided in this embodiment of the application is simple in structure and easy to manufacture and install.

[0045] Optionally, the elastic member 21 is a spring. The spring has the advantages of high elasticity, good fatigue resistance, easy processing and assembly, strong ability to withstand heavy loads and deformation, and good stability. The number of springs is set according to the actual estimated impact force that the bridge pier 5 will be subjected to, such as Figure 3A schematic diagram of a structure with nine springs is shown. The spring type, arrangement density, and length of the bridge pier anti-collision device in this embodiment can be rationally selected based on protection needs and supported by theoretical analysis, offering excellent flexibility. In the event of an impact, the spring stiffness is determined by calculation, ensuring that the impact plate 1 does not strike the bridge pier 5. Of course, the elastic member 21 can also be a damping structure.

[0046] like Figure 2 As shown, the bridge pier anti-collision device provided in this embodiment also includes a casing 4. The casing 4 is mounted over the anti-collision plate 1 and the energy-absorbing assembly 2. When the bridge pier anti-collision device is subjected to an impact, the casing 4 first contacts the anti-collision plate 1, which can partially absorb and disperse the impact force. Furthermore, the brightly colored coating on the casing 4 can serve as a warning. Furthermore, the provision of the casing 4 protects the anti-collision plate 1 and the energy-absorbing assembly 2 disposed therein, while also enhancing the aesthetics of the bridge pier anti-collision device.

[0047] The anti-collision plate 1 and baffle 22 of the present embodiment can be manufactured from pre-made steel plates through simple welding, while the external casing 4 can be manufactured from pre-made steel or aluminum plates through simple cold working and spray painting, resulting in low cost and easy availability. Because the structure of the bridge pier anti-collision device of the present application is easily available and transportable, and does not require specialized construction techniques or equipment, it can be quickly repaired after damage without any technical difficulty.

[0048] like Figure 1 and Figure 2 As shown, the two sets of energy absorbing components 2 are symmetrically arranged along a straight line perpendicular to the anti-collision plate 1, so that when the bridge pier anti-collision device is subjected to impact force, the forces on both ends of the anti-collision plate 1 are more balanced, and the anti-collision effect of the entire device is better.

[0049] Another embodiment of the present invention provides a method for designing a bridge pier anti-collision device, which is used to design the bridge pier anti-collision device, including steps 101 to 104:

[0050] Step 101: Determine the structural parameters of the bridge pier 5 , the mass of the collision object, and the impact velocity to obtain the designed collision force between the collision object and the bridge pier 5 .

[0051] The structural parameters of the pier 5 include the diameter of the pier 5 and the like.

[0052] The design impact force F between the collision object and the bridge pier 5 is determined by the combined formula of the finite element model simulation of the collision object impacting the bridge pier 冲 ,in, m is the mass of the collision object, v is the impact velocity of the collision object, Δt is the duration of the impact when the collision object hits the bridge pier anti-collision device, and h is the buffer length of the bridge pier anti-collision device. m, v, and h are design values ​​and are known quantities.

[0053] Step 102: Based on the structural parameters of the pier 5 and the designed collision force, the size, thickness and material of the collision plate 1 and the baffle 22 are determined.

[0054] Step 103: Based on the layout of the impact plate 1 and the required impact deformation, the design impact force is used as the maximum interception force when the impact plate 1 reaches the designed deformation in a direction perpendicular to its own surface. The stiffness coefficient of the elastic member 21 is calculated and the elastic member 21 is selected based on the stiffness coefficient. If the elastic member 21 is a spring, the stiffness coefficient can be selected based on the number of springs.

[0055] Taking n springs as an example, the maximum interception force of a single spring in the direction of impact of the collision object is F 冲 / n. Take the maximum deformation of the nth spring along the impact direction as x n , the initial length is L0, the length after deformation is L1, the spring compression △L can be calculated n =x n (tanβ-tan(β-α)), where α is the change in the angle between the positions of the baffles 22 before and after the collision, and β is 1 / 2 of the angle formed by the initial positions of the two baffles 22 before the collision, that is, the angle between the baffle 22 and the angle bisector before the collision.

[0056] From the elastic force F = kL, we can get F 总 =k△L1+k△L2+k△L3+…+k△L n =k(△L1+△L2+△L3+…+△L n ). F 总 is the total elastic force provided by the elastic member 21, k is the stiffness coefficient of the spring, △L n is the extension of the nth spring.

[0057] Depend on Figure 6 From the geometric relationship, we can see that Wherein, a is the distance between the same anti-collision plate 1 before and after the collision, b is the distance between the anti-collision plate 1 and the central axis of the bridge pier 5 before the collision, and d is the distance between the two columns 25.

[0058] From the balance of forces, we know that

[0059] Calculate k and select the spring and number of springs that meet the stiffness coefficient based on k.

[0060] Afterwards, finite element modeling calculations and model experiments can be used to verify the non-destructive protection effect of the bridge pier anti-collision device, and adjust parameters such as spring stiffness and quantity.

[0061] Step 104 : Install the baffle 22 , the elastic member 21 and the anti-collision plate 1 .

[0062] The design method of the bridge pier anti-collision device provided in the embodiment of the present application can quickly and accurately determine the size, thickness and material of the anti-collision plate 1 and the baffle 22, and select appropriate elastic members 21 and their number.

[0063] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other. Each embodiment focuses on the differences from other embodiments.

[0064] The above embodiments are intended only to illustrate the technical solutions of this application and are not intended to limit this application. Although this application has been described in detail with reference to the aforementioned embodiments, those skilled in the art will appreciate that they may modify the technical solutions described in the aforementioned embodiments or replace some or all of the technical features therein with equivalents. Such modifications or replacements do not deviate from the essence of the corresponding technical solutions within the scope of this application.

Claims

1. A bridge pier anti-collision device, characterized in that: Includes crash panels and energy-absorbing components; A collision avoidance plate is provided on each side of the bridge pier, and the surfaces of the two collision avoidance plates are perpendicular to the extension direction of the road; A group of energy absorbing components is respectively provided on both sides of the anti-collision plate; The energy absorbing component is fixed to the ground, and its two sides are respectively slidably connected to the same side of the two anti-collision plates and can undergo elastic deformation; The energy absorbing assembly includes a column, an elastic member and a baffle; One of the columns is fixed on the ground on both sides of the pier respectively; Two baffles are hingedly connected to each of the upright posts; The elastic member is arranged between the surfaces of the two baffles facing away from the bridge pier; The surface of the baffle facing the bridge pier is slidably connected to the anti-collision plate.

2. The bridge pier anti-collision device according to claim 1, characterized in that: The surface of the baffle facing the pier is provided with at least one slide groove; The extending directions of the chutes are perpendicular to the columns; The end surface of the anti-collision plate is provided with a sliding member that matches the sliding groove.

3. The bridge pier anti-collision device according to claim 2, characterized in that: The sliding member includes a cylinder and a sphere; One end of the column is fixed to the end surface of the anti-collision plate, and the other end is rotatably connected to the sphere; The ball is matched with the slide groove and can roll along the slide groove.

4. The bridge pier anti-collision device according to claim 2 or 3, characterized in that: The bottom surface of each chute is provided with a plurality of limiting members; The limiting member is configured to limit the sliding member from moving in a direction away from the column.

5. The bridge pier anti-collision device according to claim 4, characterized in that: The limiting member is a right-angled triangle block; The surface where one right-angle side of the right angle is located is located at the bottom surface of the chute, and the surface where the other right-angle side is located faces the column.

6. The bridge pier anti-collision device according to claim 1, characterized in that: The elastic member is a spring.

7. The bridge pier anti-collision device according to claim 1, characterized in that: Also includes casing; The protective sleeve is sleeved outside the anti-collision plate and the energy absorbing component.

8. The bridge pier anti-collision device according to claim 1, characterized in that: The two groups of energy absorbing components are symmetrically arranged along a straight line perpendicular to the surface of the anti-collision plate.

9. A design method for a bridge pier anti-collision device, characterized in that: The bridge pier anti-collision device according to any one of claims 1 to 8 is designed, comprising: Determining the structural parameters of the bridge pier, the mass of the collision object, and the impact velocity to obtain a design collision force between the collision object and the bridge pier; Determine the size, thickness and material of the collision plate and baffle according to the structural parameters of the bridge pier and the designed collision force; According to the arrangement of the anti-collision plate and the requirements for impact deformation, the designed impact force is taken as the maximum interception force when the anti-collision plate reaches the designed deformation in the direction perpendicular to its own surface, the stiffness coefficient of the elastic member is calculated, and the elastic member is selected according to the stiffness coefficient; The baffle, the elastic member, and the anti-collision plate are installed.

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