Impact resistant bridge guardrail

Abstract

This utility model relates to the field of bridge guardrails, and more particularly to impact-resistant bridge guardrails, including an energy-absorbing box. The energy-absorbing box is located at the front end of the guardrail body. A honeycomb structure plate is located at the rear of the energy-absorbing box, and a polyethylene foam board is located at the front of the energy-absorbing box. A corrugated steel plate is fixedly connected to the front end of the energy-absorbing box. Two slots are respectively opened on the left and right sides of the front end of the energy-absorbing box. Connecting rods are rotatably connected to the guardrail body corresponding to the slots. This utility model fixes the energy-absorbing box by rotating a pivot block, and simultaneously uses bolts to firmly fix the energy-absorbing box to the guardrail body. When receiving an external impact, the polyethylene foam board reduces the initial impact force, while the corrugated steel plate and honeycomb structure plate absorb the main energy through plastic deformation. This solves the problem that current bridge guardrails, after being damaged by vehicle impacts, often require replacement of the entire guardrail instead of just replacing the damaged part, which increases maintenance costs and time.

Description

Technical Field

[0001] This utility model relates to the field of bridge guardrails, and more particularly to impact-resistant bridge guardrails. Background Technology

[0002] Bridge guardrails are protective structures installed on both sides of bridges to prevent vehicles and pedestrians from accidentally falling or running off the bridge surface. They not only provide necessary safety for those crossing the bridge, but also reduce injuries caused by traffic accidents to a certain extent. Guardrails are usually made of sturdy and durable materials, such as metal, reinforced concrete, or composite materials. The appropriate style and structure are selected according to the bridge's design style, the surrounding environment, and functional requirements. Modern bridge guardrails may also integrate elements such as lighting and reflective markings to improve visibility and safety at night or in low visibility conditions.

[0003] Currently, when bridge guardrails are damaged by vehicle collisions, the entire guardrail often needs to be replaced, rather than just the damaged part. This design increases maintenance costs and time, and also leads to a waste of resources. It not only affects the normal use of the bridge, but may also cause inconvenience to traffic and additional safety hazards due to long maintenance work.

[0004] Therefore, in response to the current situation where bridge guardrails are often damaged by vehicle collisions, the entire guardrail often needs to be replaced instead of just the damaged part. This design increases maintenance costs and time, and also leads to a waste of resources and affects the normal use of the bridge. Therefore, it is necessary to design impact-resistant bridge guardrails. Utility Model Content

[0005] To address the current issue that bridge guardrails often require replacement of the entire guardrail after being damaged by vehicle collisions, rather than just replacing the damaged part, this design increases maintenance costs and time, while also wasting resources and affecting the normal use of the bridge.

[0006] The technical solution of this utility model is as follows: an impact-resistant bridge guardrail, including a guardrail body; and an energy-absorbing box. The energy-absorbing box is provided at the front end of the guardrail body. A honeycomb structure plate is provided at the rear position inside the energy-absorbing box. A polyethylene foam board is provided at the front position inside the energy-absorbing box. A corrugated steel plate is fixedly connected to the front end of the energy-absorbing box. Two slots are opened on the left and right sides of the front end of the energy-absorbing box. A connecting rod is rotatably connected to the guardrail body at the corresponding slot position. A rotating block is fixedly connected to the front end of the connecting rod. Two bolts are threadedly connected to the left and right sides of the front end of the energy-absorbing box. The bolts are threadedly connected to the guardrail body. Three preset holes are opened at the rear end of the energy-absorbing box.

[0007] Preferably, by placing the energy-absorbing box on the front side of the guardrail body, inserting the connecting rod and the rotating block from the slot, and then rotating the rotating block to fix the energy-absorbing box, the energy-absorbing box is firmly fixed to the guardrail body with bolts. When receiving external impact, the polyethylene foam board reduces the initial impact force, and the corrugated steel plate and honeycomb structure plate absorb the main energy through plastic deformation. At the same time, the pre-set holes can control the direction of collapse deformation to avoid random breakage. If the energy-absorbing box is damaged, it can be directly replaced without replacing the guardrail body, which reduces maintenance costs and time, reduces resource waste, and does not affect the normal use of the bridge.

[0008] Preferably, the rear end of the energy-absorbing box is fixedly connected with six fixing bars, and two connecting plates are movably connected between two fixing bars.

[0009] Preferably, a spring is fixedly connected to the rear end of the connecting plate, and the spring is fixedly connected to the guardrail body.

[0010] Preferably, a slot is provided at the top left of the guardrail body, and a center rod is installed inside the slot.

[0011] Preferably, the center bar is fixedly connected to the guardrail body, and a warning sign is installed inside the slot.

[0012] Preferably, a reflector is fixedly connected to the left end of the energy-absorbing box, and a reflector strip is fixedly connected to the left end of the guardrail body.

[0013] Preferably, a light strip is fixedly connected to the top of the guardrail body, and two support columns are fixedly connected to the rear end of the guardrail body.

[0014] The beneficial effects of this utility model are:

[0015] By placing the energy-absorbing box on the front side of the guardrail body, inserting the connecting rod and rotating block from the slot, and then rotating the rotating block to fix the energy-absorbing box, and using bolts to firmly fix the energy-absorbing box to the guardrail body, when receiving external impact, the polyethylene foam board reduces the initial impact force, and the corrugated steel plate and honeycomb structure plate absorb the main energy through plastic deformation. At the same time, the pre-set holes can control the direction of collapse deformation to avoid random breakage. If the energy-absorbing box is damaged, it can be directly replaced without replacing the guardrail body, reducing maintenance costs and time, reducing resource waste, and not affecting the normal use of the bridge. Attached Figure Description

[0016] Figure 1 The diagram shown is a three-dimensional structural schematic of this utility model;

[0017] Figure 2 The diagram shown is a three-dimensional side sectional view of the present invention.

[0018] Figure 3The diagram shown is a three-dimensional front cross-sectional view of the present invention.

[0019] Figure 4 The diagram shown is a three-dimensional side sectional view of the guardrail body of this utility model.

[0020] Figure 5 The diagram shown is a three-dimensional rear cross-sectional view of the present invention.

[0021] Explanation of reference numerals in the attached drawings: 1. Guardrail body; 2. Energy-absorbing box; 3. Honeycomb structure panel; 4. Polyethylene foam board; 5. Corrugated steel plate; 6. Hole; 7. Connecting rod; 8. Rotating block; 9. Bolt; 10. Pre-set hole; 11. Fixing strip; 12. Connecting plate; 13. Spring; 14. Slot; 15. Center rod; 16. Warning sign; 17. Reflector; 18. Reflective strip; 19. Light strip; 20. Support column. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] Please see Figures 1-5This utility model provides an embodiment of an impact-resistant bridge guardrail, comprising a guardrail body 1 and an energy-absorbing box 2. The energy-absorbing box 2 is located at the front end of the guardrail body 1. A honeycomb structure plate 3 is located at the rear of the interior of the energy-absorbing box 2, and a polyethylene foam board 4 is located at the front of the interior of the energy-absorbing box 2. A corrugated steel plate 5 is fixedly connected to the front end of the energy-absorbing box 2. Two slots 6 are respectively opened on the left and right sides of the front end of the energy-absorbing box 2. A connecting rod 7 is rotatably connected to the guardrail body 1 corresponding to the slots 6. A rotating block 8 is fixedly connected to the front end of the connecting rod 7. Two bolts 9 are threadedly connected to the left and right sides of the front end of the energy-absorbing box 2, and the bolts 9 are threadedly connected to the guardrail body 1. Three pre-set holes 10 are opened at the rear end of the energy-absorbing box 2. Six fixing strips 11 are fixedly connected to the rear end of the energy-absorbing box 2. Two connecting plates 12 are movably connected between two fixing strips 11. When installing the energy-absorbing box 2, the connecting plates 12 are inserted between the fixing strips 11 to prevent impact. The spring 13 deflects under the influence of gravity. The rear end of the connecting plate 12 is fixedly connected to the spring 13, which is fixedly connected to the guardrail body 1. When the energy-absorbing box 2 receives an impact, it presses the connecting plate 12 and the spring 13. The spring 13 decreases in size, which helps to reduce the impact and protect the guardrail body 1. By placing the energy-absorbing box 2 on the front side of the guardrail body 1, the connecting rod 7 and the rotating block 8 are inserted from the slot 6. Then, the rotating block 8 is rotated to fix the energy-absorbing box 2. At the same time, the bolts 9 are used to firmly fix the energy-absorbing box 2 to the guardrail body 1. When it receives an external impact, the polyethylene foam board 4 reduces the initial impact force, and the corrugated steel plate 5 and the honeycomb structure plate 3 plastically deform to absorb the main energy. At the same time, the pre-set holes 10 can control the direction of collapse deformation to avoid random breakage. After the energy-absorbing box 2 is damaged, it can be directly replaced without replacing the guardrail body 1, which reduces maintenance costs and time, reduces the waste of resources, and does not affect the normal use of the bridge.

[0024] Please see Figures 1-5 In this embodiment, a slot 14 is provided on the top left side of the guardrail body 1. A central rod 15 is provided inside the slot 14. The slot 14 and the central rod 15 can fix the position of the warning sign 16. At the same time, the bottom of the slot 14 is connected to the outside to prevent water and dust accumulation. The central rod 15 is fixedly connected to the guardrail body 1. A reflector 17 is fixedly connected to the left end of the energy-absorbing box 2. A reflective strip 18 is fixedly connected to the left end of the guardrail body 1. The reflector 17 and the reflective strip 18 can reflect light sources at night to indicate the position of the guardrail to the driver. A light strip 19 is fixedly connected to the top of the guardrail body 1. Two support columns 20 are fixedly connected to the rear end of the guardrail body 1. In foggy or rainy weather, the light strip 19 can light up to remind the driver. The bottom of the support column 20 is fixedly connected to the ground. The triangular support structure can prevent the guardrail body 1 from collapsing under impact and prevent vehicles from rushing out of the guardrail.

[0025] During operation, the guardrail body 1 is installed on the ground, and then the energy-absorbing box 2 is placed in front of the guardrail body 1. The connecting rod 7 and the rotating block 8 are inserted from the slot 6, and then the rotating block 8 is rotated to fix the energy-absorbing box 2. At the same time, the bolts 9 are used to firmly fix the energy-absorbing box 2 to the guardrail body 1. When receiving external impact, the polyethylene foam board 4 reduces the initial impact force, and the corrugated steel plate 5 and honeycomb structure board 3 absorb the main energy through plastic deformation. At the same time, the pre-set holes 10 can control the direction of collapse deformation to avoid random breakage. If the energy-absorbing box 2 is damaged, it can be directly replaced without replacing the guardrail body 1. The connecting plate 12 is inserted between the energy-absorbing box 2 and the guardrail body 1. Between the fixing strips 11, the spring 13 is prevented from shifting under the influence of gravity. When the energy-absorbing box 2 is impacted, it presses the connecting plate 12 and the spring 13 to protect the guardrail body 1. In use, the slot 14 and the center rod 15 can fix the position of the warning sign 16. At the same time, the bottom of the slot 14 is connected to the outside to prevent water and dust accumulation. The reflector 17 and reflector strip 18 can reflect light sources at night to indicate the position of the guardrail to the driver. In foggy or rainy weather, the light strip 19 can light up to remind the driver. The bottom of the support column 20 is fixedly connected to the ground. The triangular support structure can prevent the guardrail body 1 from collapsing under impact and prevent vehicles from rushing out of the guardrail body 1.

[0026] Through the above steps, the guardrail body 1 is installed on the ground, and then the energy-absorbing box 2 is placed on the front side of the guardrail body 1. The connecting rod 7 and the rotating block 8 are inserted from the slot 6, and then the rotating block 8 is rotated to fix the energy-absorbing box 2. At the same time, the bolts 9 are used to firmly fix the energy-absorbing box 2 to the guardrail body 1. When it receives an external impact, the polyethylene foam board 4 reduces the initial impact force, and the corrugated steel plate 5 and honeycomb structure plate 3 plastically deform to absorb the main energy. At the same time, the pre-set holes 10 can control the direction of collapse deformation to avoid random breakage. After the energy-absorbing box 2 is damaged, it can be directly replaced without replacing the guardrail body 1. This solves the problem that after a bridge guardrail is damaged by a vehicle collision, it is often necessary to replace the entire guardrail instead of just replacing the damaged part. This design increases maintenance costs and time, and also leads to waste of resources and affects the normal use of the bridge.

[0027] It should be understood that this embodiment is for illustrative purposes only and is not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims.

Claims

1. An impact-resistant bridge guardrail, comprising a guardrail body (1); characterized in that: It also includes an energy-absorbing box (2), an energy-absorbing box (2) is provided at the front end of the guardrail body (1), a honeycomb structure plate (3) is provided at the rear of the energy-absorbing box (2), a polyethylene foam board (4) is provided at the front of the energy-absorbing box (2), a corrugated steel plate (5) is fixedly connected to the front end of the energy-absorbing box (2), two slots (6) are opened on the left and right sides of the front end of the energy-absorbing box (2), a connecting rod (7) is rotatably connected to the guardrail body (1) corresponding to the slot (6), a rotating block (8) is fixedly connected to the front end of the connecting rod (7), two bolts (9) are threadedly connected to the left and right sides of the front end of the energy-absorbing box (2), the bolts (9) are threadedly connected to the guardrail body (1), and three preset holes (10) are opened at the rear end of the energy-absorbing box (2).

2. The impact-resistant bridge guardrail according to claim 1, characterized in that: The rear end of the energy-absorbing box (2) is fixedly connected with six fixing bars (11), and two connecting plates (12) are movably connected between two fixing bars (11).

3. The impact-resistant bridge guardrail according to claim 2, characterized in that: A spring (13) is fixedly connected to the rear end of the connecting plate (12), and the spring (13) is fixedly connected to the guardrail body (1).

4. The impact-resistant bridge guardrail according to claim 1, characterized in that: A slot (14) is provided on the top left side of the guardrail body (1), and a center rod (15) is provided inside the slot (14).

5. The impact-resistant bridge guardrail according to claim 4, characterized in that: The center rod (15) is fixedly connected to the guardrail body (1), and a warning sign (16) is installed inside the slot (14).

6. The impact-resistant bridge guardrail according to claim 1, characterized in that: A reflector (17) is fixedly connected to the left end of the energy-absorbing box (2), and a reflector strip (18) is fixedly connected to the left end of the guardrail body (1).

7. The impact-resistant bridge guardrail according to claim 1, characterized in that: The top of the guardrail body (1) is fixedly connected with a light strip (19), and the rear end of the guardrail body (1) is fixedly connected with two support columns (20).

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