A sliding-guided, multi-energy-consuming bridge pier anti-collision device

Abstract

The present invention relates to the technical field of bridge pier anti-collision, specifically a sliding-guided multi-energy-dissipating bridge pier anti-collision device. It comprises a bridge pier, a rolling track is provided in the circumference of the bridge pier, a first protective device is provided on the outer side of the bridge pier, a rolling groove is provided on the first protective device, a rolling body is provided between the rolling groove and the rolling track, a second protective device is provided on the upper and lower sides of the first protective device, a sliding groove is provided on the second protective device, the bridge pier is provided with a sliding track, and the first protective device is connected to the second protective device through a damping block. The present invention provides the first and second protective devices, so that when the bridge pier is impacted by a vehicle, the first and second protective devices plastically deform to dissipate the energy of the impact force; the first and second protective devices rotate relative to the bridge pier, and can also significantly reduce the impact force transmitted to the bridge pier; the relative movement between the first and second protective devices drives the shear deformation of the damping block to further dissipate energy, thereby reducing the destructive effect of the vehicle on the bridge pier.

Description

Technical Field

[0001] The present invention relates to the technical field of bridge pier anti-collision technology, in particular to a bridge pier anti-collision device with sliding guidance and multiple energy consumption. Background Art

[0002] With the rapid development of transportation construction in my country, urban three-dimensional transportation has become increasingly complex. Common anti-collision measures include simple measures such as warnings, rigid isolation, or setting anti-collision cushions on the outside of bridge piers;

[0003] Chinese patent No. 201921998252.2 discloses a bridge pier column anti-collision protection device, which belongs to the field of road and bridge traffic safety facilities, including a bridge pier column, an inner ring connected and fixed soft steel plate, and an outer ring connected and fixed anti-collision steel plate. The outer layer of the pier column is provided with an inner ring connected and fixed soft steel plate, and the outer ring of the inner ring connected and fixed soft steel plate is provided with an outer ring connected and fixed anti-collision steel plate. A number of built-in shock-absorbing and energy-absorbing connecting springs, outer ring steel plate cutting curved panels and inner ring steel plate cutting curved panels are provided between the inner ring connected and fixed soft steel plate and the outer ring connected and fixed anti-collision steel plate. An impact and extrusion energy-absorbing buffer medium is provided in the area between the inner ring connected and fixed soft steel plate and the outer ring connected and fixed anti-collision steel plate, and a soft anti-collision buffer pad is provided on the outer layer of the outer ring connected and fixed anti-collision steel plate.

[0004] Although the above patent can unload the force of the vehicle's collision through the anti-collision cushion, since it is hard-connected to the bridge pier, the impact force will still be transmitted to the bridge pier, which has the disadvantage of poor protection effect on the bridge pier. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a sliding-guided multi-energy-consuming bridge pier anti-collision device that can guide vehicles that collide with the bridge piers, thereby improving the protection effect of the bridge piers.

[0006] The technical solution adopted by the present invention to solve its technical problems is a sliding-guided multi-energy-consuming bridge pier anti-collision device, including a bridge pier, a rolling track is arranged circumferentially of the bridge pier, a first protective device is arranged on the outer side of the bridge pier, a rolling groove is arranged on the first protective device to match the rolling track, a rolling body is arranged between the rolling groove and the rolling track, second protective devices are arranged on the upper and lower sides of the first protective device respectively, a sliding groove is arranged on the second protective device, a sliding track matching the sliding groove is arranged circumferentially of the bridge pier, and the first protective device is connected to the second protective device through a damping block.

[0007] Furthermore, a sleeve is provided on the outer side of the pier, and the sliding track and the rolling track are both fixedly connected to the sleeve.

[0008] Furthermore, a steel plate strip is provided on the damping block, and the extension direction of the steel plate strip is the same as the arrangement direction of the rolling track. A vertical roller is provided on the sleeve, and a limit block is provided on the outside of the roller. The end of the steel plate strip passes through the gap between the roller and the limit block and extends toward the damping block side, and the end of the steel plate strip is in contact with the sleeve.

[0009] Furthermore, the steel strip is provided with an elastic deformation device. Furthermore, multiple first protective devices are provided along the circumference of the pier, with two adjacent first protective devices connected by a first connector; second protective devices are provided on the upper and lower sides of each first protective device; each first protective device is connected to a corresponding second protective device via a damping block, and two adjacent second protective devices are connected by a second connector.

[0010] Furthermore, the first connecting member and the second connecting member are both made of low elastic modulus rubber.

[0011] Furthermore, the first protective device includes a first mounting plate, the rolling groove is arranged on the first mounting plate, a first anti-collision unit is arranged on the outer side of the first mounting plate, and polyurethane foam is arranged inside the first anti-collision unit; the second protective device includes a second mounting plate, the sliding groove is arranged on the second mounting plate, a second anti-collision unit is arranged on the outer side of the second mounting plate, and polyurethane foam is arranged inside the second anti-collision unit.

[0012] Furthermore, reinforcing ribs are alternately arranged inside the first anti-collision unit and the second anti-collision unit.

[0013] Furthermore, the damping block is made of rubber.

[0014] The beneficial effects of the present invention are:

[0015] 1. By providing a first protective device and a second protective device, the first protective device is in rolling connection with the bridge pier, and the second protective device is in sliding connection with the bridge pier. The first protective device is connected to the second protective device via a damping block. When the first protective device or the second protective device is impacted by a vehicle, the first protective device or the second protective device can slide along the bridge pier under the action of the impact force to guide the vehicle, significantly reducing the impact force or impact energy of the vehicle on the first protective device or the second protective device, and reducing the damage to the bridge pier caused by the huge kinetic energy of the vehicle. At the same time, the friction between the first anti-collision device and the bridge pier is less than the friction between the second anti-collision device and the bridge pier. As a result, when the first anti-collision device is impacted by a vehicle, relative movement occurs between the first and second anti-collision devices, which causes shear deformation of the damping block, which can also absorb some kinetic energy. In this way, when the bridge pier is impacted by a vehicle, the first protective device or the second protective device plastically deforms to dissipate the energy of the impact force. At the same time, the first and second protective devices rotate relative to the bridge pier, further significantly reducing the impact force transmitted to the pier. The relative movement between the first protection device and the second protection device drives the shear deformation of the damping block to further consume energy, thus achieving the first and second level energy consumption.

[0016] 2. By setting up an elastic deformation device and a steel plate belt, when the first anti-collision device and the second anti-collision device move relative to each other, the damping block will be shear-deformed to absorb part of the kinetic energy. At the same time, the movement of the damping block relative to the fixed roller and the limit plate will further drive the elastic deformation device to stretch and deform, thus achieving the third level of energy dissipation. When the rotational deformation is large, the steel plate belt will be pulled to produce plastic deformation, thus achieving the fourth level of energy dissipation. In this way, when the bridge pier is impacted by a vehicle, the rotation and deformation of the first protective device or the second protective device can dissipate the energy of the impact force, and the shear deformation of the damping block can dissipate the energy of the impact force. At the same time, the steel plate belt and the elastic deformation device connected to the damping block will be driven to further dissipate the impact force. This achieves multiple energy dissipation and can better protect the bridge pier. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present invention;

[0018] Figure 2 yes Figure 1 Cross-sectional view along AA;

[0019] Figure 3 yes Figure 1 A top view of

[0020] Figure 4 It is an exploded view of the connection between the first protective device, the second protective device and the cylinder.

[0021] Figure markings: 1-bridge pier; 2-sleeve; 201-rolling track; 202-sliding track; 203 elastic deformation device; 3-first protective device; 301-rolling groove; 302-rolling body; 303-first mounting plate; 304-first anti-collision unit; 305-first connecting piece; 4-second protective device; 401-sliding groove; 402-second mounting plate; 403-second anti-collision unit; 404-reinforcement rib plate; 405-second connecting piece; 5-damping block; 6-steel plate belt; 7-roller; 8-limit block. DETAILED DESCRIPTION

[0022] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0023] like Figure 1 and Figure 4 As shown, the present invention provides a sliding-guided multi-energy-dissipating bridge pier anti-collision device, comprising a bridge pier 1, a rolling track 201 being provided circumferentially of the bridge pier 1, a first protective device 3 being provided on the outer side of the bridge pier 1, a rolling groove 301 matching the rolling track 201 being provided on the first protective device 3, a rolling body 302 being provided between the rolling groove 301 and the rolling track 201, second protective devices 4 being provided on the upper and lower sides of the first protective device 3, a sliding groove 401 being provided on the second protective device 4, a sliding track 202 matching the sliding groove 401 being provided circumferentially of the bridge pier 1, and the first protective device 3 being connected to the second protective device 4 via a damping block 5.

[0024] Among them, the cross-section of the pier 1 is circular or rectangular, and the rolling track 201 plays a guiding role for the first protective device 3. The arrangement direction of the rolling track 201 is the moving direction of the first protective device 3. The rolling track 201 can be pre-buried in the pier 1. The first protective device 3 is used to absorb the impact force brought by the vehicle. The first protective device 3 can be made of foam aluminum. A rolling groove 301 that matches the rolling track 201 is provided on the first protective device 3. A rolling body 302 is provided between the rolling groove 301 and the rolling track 201. The rolling body 302 can be a roller or a ball. The rolling body 302, the rolling groove 301 and the track 201 form a structure similar to a bearing, so that the first protective device 3 can roll relative to the rolling track 201; the second protective device 4 also uses foam aluminum, the sliding groove 401 can be a dovetail groove, the sliding track 202 can be pre-buried in the pier 1, and the sliding track 202 can be a dovetail block. Through the coordinated use of the dovetail groove and the dovetail block, the second protective device 4 can slide relative to the sliding track 202. The damping block 5 can be made of silicone plate, propylene elastomer, vinyl elastomer, or rubber plate, and the damping block 5 can be connected to the first protective device 3 by bolts or strong glue. The end of the damping block 5 can also be pre-embedded in the first protective device 3; the damping block 5 can also be connected to the second protective device 4 by bolts or strong glue.

[0025] By setting the first protective device 3 and the second protective device 4, the first protective device 3 is connected to the bridge pier 1 in a rolling manner, and the second protective device 4 is connected to the bridge pier 1 in a sliding manner. The first protective device 3 is connected to the second protective device 4 through the damping block 5. When the first protective device 3 or the second protective device 4 receives the impact force of the vehicle, the first protective device 3 or the second protective device 4 can slide along the bridge pier 1 under the action of the impact force to guide the vehicle, thereby greatly reducing the impact force or impact energy of the vehicle on the first protective device 3 or the second protective device 4, and reducing the destructive effect of the huge kinetic energy of the vehicle on the bridge pier 1. At the same time, the first anti-collision device 3 and the bridge pier 1 are connected. The friction between them is smaller than the friction between the second anti-collision device 4 and the bridge pier 1. This makes it possible for relative movement between the first anti-collision device 3 and the second anti-collision device 4 when the first anti-collision device 3 is impacted by the vehicle. This causes the damping block 5 to undergo shear deformation and also absorb a portion of the kinetic energy. In this way, when the bridge pier 1 is impacted by the vehicle, the first protective device 3 or the second protective device 4 can dissipate the energy of the impact force, and the damping block 5 can also dissipate the energy of the impact force. The rotation of the first protective device 3 and the second protective device 4 relative to the bridge pier 1 can also dissipate the energy of the impact force. In this way, multiple energy dissipation is achieved, and the bridge pier 1 can be better protected.

[0026] The sliding track 202 and the rolling track 201 are both embedded in the pier 1, which may cause damage to the pier 1. Figure 2 and Figure 3 (The solid arrows in the figure indicate the rotational directions of the first and second protective devices 3 and 4, and the hollow arrows indicate the impact side.) A sleeve 2 is provided on the outside of the pier 1, and the sliding track 202 and rolling track 201 are both fixedly connected to the sleeve 2. The cross-section of the sleeve 2 is the same as that of the pier 1. For example, if the cross-section of the pier 1 is circular, the cross-section of the sleeve 2 is also circular. If both the sliding track 202 and the rolling track 201 are made of steel, the connection between the sliding track 202 and the sleeve 2, and the connection between the rolling track 201 and the sleeve 2, can be achieved by welding or bolting.

[0027] In order to further reduce the impact of vehicle impact on pier 1, see Figure 2 The damping block 5 is provided with a steel strip 6, the extension direction of which is the same as the arrangement direction of the rolling track 201. The sleeve 2 is provided with a vertical roller 7, and a limit block 8 is provided on the outer side of the roller 7. The end of the steel strip 6 passes through the gap between the roller 7 and the limit block 8 and extends toward the damping block 5. The end of the steel strip 6 is in contact with the sleeve 2. The width of the steel strip 6 is less than the distance between the first protective device 3 and the second protective device 4. The connection between the steel strip 6 and the damping block 5 can be bolted. When the damping block 5 is made of rubber, the steel strip 6 can be placed in a mold during casting of the damping block 5, and liquid rubber can be poured into the mold. When the liquid rubber solidifies, the steel strip 6 can be integrally formed with the damping block 5. The limit stop 8 and the sleeve 2 can be connected by welding or bolts, and the roller 7 and the sleeve 2 can be connected by welding or bearings. There is a gap between the roller 7 and the sleeve 2, and the thickness of the steel strip 6 is less than the distance between the roller 7 and the limit stop 8. When in use, the steel strip 6 passes through the gap between the roller 7 and the limit stop 8 and the gap between the roller 7 and the sleeve 2 in turn; when the first protective device 3 is impacted by the vehicle, the sliding of the first protective device 3 causes the displacement of the damping block 5. When the displacement is too large, the steel strip 6 will be pulled over the roller 7. Under the action of the roller 7 and the limit stop 8, the steel strip 6 will undergo a plastic deformation process from flat to bent and then to straight, further realizing the energy dissipation of the vehicle impact force.

[0028] Since the steel strip 6 will undergo plastic deformation after being pulled, the steel strip 6 cannot be used again after being pulled. In order to prevent the steel strip 6 from being pulled under a small impact force, an elastic deformation device 203 is further provided on the steel strip (6).

[0029] The elastic deformation device 203 can be made of a viscoelastic damping material or a damping spring combination. When a vehicle impacts the bridge pier, the first guard device 3 and / or the second guard device 4 guides the vehicle, absorbing most of the impact force and reducing damage to the pier. The first guard device 3 and / or the second guard device 4 deform themselves to absorb energy, achieving the first level of energy dissipation. The first guard device 3 and / or the second guard device 4 rotate relative to the pier, driving the damping block to shear, achieving the second level of energy dissipation. The damping block's displacement causes the elastic deformation device 203 to achieve the third level of energy dissipation, while simultaneously driving the steel strip 6 to plastically stretch, achieving the fourth level of energy dissipation. When the rotational force of the first guard device 3 and / or the second guard device 4 relative to the pier is small, the elastic deformation device 203 undergoes elastic deformation, while the steel strip 6 undergoes no or only minor plastic deformation. This allows the first guard device 3 and / or the second guard device 4 to be reset, and ensures that the steel strip 6 is not pulled under small impact forces.

[0030] In order to fully protect the pier 1, see Figure 2 and Figure 3 Multiple first protective devices 3 are provided along the circumference of the pier 1, with two adjacent first protective devices 3 connected by a first connector 305. Second protective devices 4 are provided on the upper and lower sides of each first protective device 3. Each first protective device 3 is connected to the corresponding second protective device 4 via a damping block 5, and two adjacent second protective devices 4 are connected by a second connector 405. This arrangement allows the multiple first protective devices 3 to form a single unit. When one first protective device 3 is impacted, the remaining first protective devices 3 can dissipate energy.

[0031] In order to further dissipate the impact force, the first connecting member 305 and the second connecting member 405 are both made of low elastic modulus rubber. When one of the first protective devices 3 receives an impact, the low elastic modulus rubber can absorb part of the energy, thereby dissipating the impact force.

[0032] Further, as a preferred embodiment, see Figure 4The first protective device 3 includes a first mounting plate 303, the rolling groove 301 is provided on the first mounting plate 303, a first anti-collision unit 304 is provided on the outer side of the first mounting plate 303, and an energy-absorbing material is provided inside the first anti-collision unit 304; the second protective device 4 includes a second mounting plate 402, the sliding groove 401 is provided on the second mounting plate 402, a second anti-collision unit 403 is provided on the outer side of the second mounting plate 402, and an energy-absorbing material is provided inside the second anti-collision unit 403. The first mounting plate 303 and the second mounting plate 402 are both steel plates, and the inner surfaces of the first mounting plate 303 and the second mounting plate 402 are in contact with the cylinder. The rolling groove 301 can be manufactured on the first mounting plate 303 using a milling cutter or by integral casting. Similarly, the sliding groove 401 can be manufactured on the second mounting plate 402 using a milling cutter or by integral casting. The energy-absorbing material can be made of polyurethane foam, aluminum foam, shear thickening material, etc.

[0033] In order to improve the strength of the first anti-collision unit 304 and the second anti-collision unit 403, further, see Figure 1 The first anti-collision unit 304 and the second anti-collision unit 403 are staggered with reinforcing ribs 404. The reinforcing ribs 404 are staggered to form a mesh or honeycomb structure, which improves the strength of the first anti-collision unit 304 and the second anti-collision unit 403.

[0034] Furthermore, the damping block 5 is made of rubber.

[0035] The embodiments of this specific implementation method are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A sliding-guided multi-energy-dissipating bridge pier anti-collision device, comprising a bridge pier (1), characterized in that: The bridge pier (1) is provided with a rolling track (201) in the circumference thereof, and a first protective device (3) is provided on the outer side of the bridge pier (1), and a rolling groove (301) matching with the rolling track (201) is provided on the first protective device (3), and a rolling body (302) is provided between the rolling groove (301) and the rolling track (201), and a second protective device (4) is provided on the upper and lower sides of the first protective device (3), and a sliding groove (401) is provided on the second protective device (4), and a sliding track (202) matching with the sliding groove (401) is provided on the circumference of the bridge pier (1), and the first protective device (3) is connected to the second protective device (4) through a damping block (5).

2. The sliding guide multi-energy dissipation bridge pier anti-collision device according to claim 1, characterized in that: A sleeve (2) is provided on the outside of the bridge pier (1), and the sliding track (202) and the rolling track (201) are both fixedly connected to the sleeve (2).

3. The sliding guide multi-energy dissipation bridge pier anti-collision device according to claim 2, characterized in that: A steel plate belt (6) is provided on the damping block (5), and the extension direction of the steel plate belt (6) is the same as the arrangement direction of the rolling track (201). A vertical roller (7) is provided on the sleeve (2), and a limit block (8) is provided on the outer side of the roller (7). The end of the steel plate belt (6) passes through the gap between the roller (7) and the limit block (8) and extends toward the damping block (5). The end of the steel plate belt (6) is in contact with the sleeve (2).

4. The sliding guide multi-energy dissipation bridge pier anti-collision device according to claim 3, characterized in that: An elastic deformation device (203) is provided on the steel strip (6).

5. The sliding guide multi-energy dissipation bridge pier anti-collision device according to claim 1, characterized in that: A plurality of the first protective devices (3) are arranged along the circumference of the pier (1), and two adjacent first protective devices (3) are connected via a first connecting member (305); a second protective device (4) is respectively arranged on the upper and lower sides of each first protective device (3); each first protective device (3) is connected to the corresponding second protective device (4) via a damping block (5), and two adjacent second protective devices (4) are connected via a second connecting member (405).

6. The sliding guide multi-energy dissipation bridge pier anti-collision device according to claim 5, characterized in that: The first connecting member (305) and the second connecting member (405) are both made of low elastic modulus rubber.

7. A sliding guide multi-energy dissipation bridge pier anti-collision device according to any one of claims 1 to 6, characterized in that: The first protective device (3) comprises a first mounting plate (303), the rolling groove (301) is arranged on the first mounting plate (303), a first anti-collision unit (304) is arranged on the outer side of the first mounting plate (303), and an energy-absorbing material is arranged inside the first anti-collision unit (304); the second protective device (4) comprises a second mounting plate (402), the sliding groove (401) is arranged on the second mounting plate (402), a second anti-collision unit (403) is arranged on the outer side of the second mounting plate (402), and an energy-absorbing material is arranged inside the second anti-collision unit (403).

8. The sliding guide multi-energy dissipation bridge pier anti-collision device according to claim 7, characterized in that: Reinforcement ribs (404) are alternately arranged inside the first anti-collision unit (304) and the second anti-collision unit (403).

9. The sliding guide multi-energy dissipation bridge pier anti-collision device according to claim 8, characterized in that: The damping block (5) is made of rubber.

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