Prefabricated central anti-collision guardrail structure device with reserved connecting notches

Abstract

The utility model discloses a prefabricated central anti-collision guardrail structure device with a reserved connecting notch. The prefabricated central anti-collision guardrail structure device comprises a beam body, a prefabricated body, a steel reinforcement framework and two side seats, a first reinforcing steel bar and a second reinforcing steel bar are pre-buried on the beam body; the prefabricated body is made of concrete, the prefabricated body abuts against a beam body, the prefabricated body comprises a base and a main body, two connecting notches are formed in the bottoms of the two sides of the base in a concave mode respectively, the two connecting notches extend longitudinally respectively, and the first reinforcing steel bar and the second reinforcing steel bar extend into the two connecting notches respectively. The prefabricated body is arranged, the two connecting notches are formed in the bottoms of the two sides of the base in a matched mode, after the prefabricated body is hoisted, the steel reinforcement framework can be connected with the first steel reinforcement and the second steel reinforcement in a coupled mode, then secondary concrete pouring is conducted to form the two side bases, factory prefabrication can be achieved, the precision requirement is low, on-site rapid hoisting can be achieved, and the construction progress is greatly accelerated; and noise and dust residue pollution generated in the construction process can be reduced, and the coating is environmentally friendly and can be widely popularized and used.

Description

Technical Field

[0001] This utility model relates to the field of crash barriers, and in particular to a prefabricated central crash barrier structure device with a reserved connection slot. Background Technology

[0002] Crash barriers, as the name suggests, are railings or barriers installed to prevent vehicles or other objects from colliding with and causing injury. These barriers are commonly found on roads, bridges, highways, parking lots, warehouses, airports, ports, and other locations, their primary function being to protect people and property from accidental impacts. In addition to their crash-prevention function, crash barriers also serve a separating function, dividing roads, parking lots, and other areas to ensure smooth and orderly traffic flow. Furthermore, barriers can also act as warnings and guides, using their color, shape, and reflective materials to alert drivers to road conditions and prevent accidents.

[0003] Currently, most urban roads and highways use cast-in-place concrete for central crash barriers. While this method offers the advantage of reliable anchoring, it suffers from long construction periods, requires numerous formwork templates, and has low construction efficiency, impacting bridge deck paving progress and generating dust and noise pollution. Existing prefabricated crash barriers, using bolts and steel structures, suffer from weak crashworthiness or complex construction, making construction difficult, requiring high precision, and hindering practical application. Therefore, it is necessary to research a solution to address these issues. Summary of the Invention

[0004] In view of this, the present invention addresses the deficiencies of the existing technology and its main objective is to provide a prefabricated central crash barrier structure device with a reserved connection slot, which can effectively solve the problems of long construction period, high construction difficulty, high precision requirements and low construction efficiency of existing crash barriers.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A prefabricated central crash barrier structure with pre-reserved connection slots includes a beam, a prefabricated body, a steel reinforcement skeleton, and two side seats. The beam has a first steel reinforcement and a second steel reinforcement embedded in it. The prefabricated body is made of concrete and rests against the beam. The prefabricated body includes a base and a main body. Two connection slots are recessed on the bottom of each side of the base, extending longitudinally. The first and second steel reinforcements extend into the two connection slots. The main body extends integrally upward from the base and has two grouting holes that communicate with the two connection slots. The steel reinforcement skeleton is bound and fixed within the prefabricated body, with a portion of the skeleton located within the two connection slots. The skeleton is coupled to the first and second steel reinforcements. The two side seats are formed by secondary pouring of concrete into the two connection slots through the two grouting holes, completely filling each slot.

[0007] Preferably, the first reinforcing bar has a first U-shaped portion, the second reinforcing bar has a second U-shaped portion, and the reinforcing bar skeleton has a plurality of third U-shaped portions. The plurality of third U-shaped portions are respectively located in two connecting slots. The plurality of third U-shaped portions form a snap-fit ​​with the first U-shaped portion and the second U-shaped portion, and a longitudinal reinforcing bar is inserted into the snap-fit ​​for coupling connection.

[0008] Preferably, the first and second reinforcing bars are multiple longitudinally spaced bars, and the distance between two adjacent first reinforcing bars and two adjacent second reinforcing bars is 100-150mm.

[0009] Preferably, the base has inclined surfaces on both sides of its top, and the two grouting holes are located at the middle of the two inclined surfaces.

[0010] Preferably, the base has a base at its bottom, and the two connecting slots are located on both sides of the base; the beam includes a main beam top plate, a reinforced concrete layer, a waterproof layer, and an asphalt concrete layer; the base rests on the main beam top plate, the first and second reinforcing bars are embedded in the main beam top plate, the reinforced concrete layer is laid on the surface of the main beam top plate and located on the periphery of the two side bases, the waterproof layer is laid on the surface of the reinforced concrete layer and located on the periphery of the two side bases, and the asphalt concrete layer is laid on the surface of the waterproof layer and located on the periphery of the two side bases.

[0011] Preferably, the length of the prefabricated body is 3-5m.

[0012] Preferably, both ends of the prefabricated body have connection notches.

[0013] Compared with the prior art, this utility model has obvious advantages and beneficial effects. Specifically, as can be seen from the above technical solution:

[0014] By setting up a prefabricated body and having two connecting slots recessed on the bottom of both sides of the base, after the prefabricated body is hoisted, the steel reinforcement skeleton can be coupled and connected with the first and second steel reinforcements. Then, a second concrete pour is carried out to form the two side seats. This can achieve factory prefabrication, has low precision requirements, and can be quickly hoisted on site, greatly accelerating the construction progress. It can also reduce noise and dust pollution generated during construction, making it green and environmentally friendly, and can be widely promoted and used. Attached Figure Description

[0015] Figure 1 This is a front view of a preferred embodiment of the present invention;

[0016] Figure 2 This is a top view of a preferred embodiment of the present invention;

[0017] Figure 3 This is a side view of a preferred embodiment of the present invention;

[0018] Figure 4 This is a cross-sectional view of a preferred embodiment of the present invention.

[0019] Explanation of reference numerals in the attached diagram:

[0020] 10. Beam body; 11. Main beam top slab

[0021] 12. Reinforced concrete layer 13. Waterproof layer

[0022] 14. Asphalt concrete layer; 20. Precast body

[0023] 21. Base 211. Root

[0024] 22. Main body 201. Connecting slot

[0025] 202, Grouting hole; 203, Connection notch

[0026] 204, inclined plane 30, steel reinforcement cage

[0027] 31. Third reinforcing bar; 32. Vertical reinforcing bar

[0028] 33. Tie bars; 34. Horizontal reinforcement bars

[0029] 301, Third U-shaped part; 40, Side seat

[0030] 51. First reinforcing bar; 511. First U-shaped section

[0031] 52. Second reinforcing bar; 521. Second U-shaped section

[0032] 53. Longitudinal reinforcement Detailed Implementation

[0033] Please refer to Figures 1 to 4As shown, it illustrates the specific structure of a preferred embodiment of the present invention, including a beam 10, a prefabricated body 20, a steel reinforcement frame 30, and two side seats 40.

[0034] The beam 10 has pre-embedded first reinforcing bars 51 and second reinforcing bars 52. Specifically, the beam 10 includes a main beam top plate 11, a reinforced concrete layer 12, a waterproof layer 13, and an asphalt concrete layer 14. The first reinforcing bars 51 and second reinforcing bars 52 are pre-embedded in the main beam top plate 11. The reinforced concrete layer 12 is laid on the surface of the main beam top plate 11, the waterproof layer 13 is laid on the surface of the reinforced concrete layer 12, and the asphalt concrete layer 14 is laid on the surface of the waterproof layer 13. The first reinforcing bar 51 has a first U-shaped portion 511, and the second reinforcing bar 52 has a second U-shaped portion 521. Both the first U-shaped portion 511 and the second U-shaped portion 521 extend upwards from the main beam top plate 11. Furthermore, there are multiple first reinforcing bars 51 and second reinforcing bars 52 arranged longitudinally at intervals, with the distance between two adjacent first reinforcing bars 51 and two adjacent second reinforcing bars 52 being 100-150 mm.

[0035] The precast body 20 is made of concrete and rests against the beam 10. The precast body 20 includes a base 21 and a main body 22. Two connecting slots 201 are recessed on the bottom of both sides of the base 21, extending longitudinally. The first reinforcing bar 51 and the second reinforcing bar 52 extend into the two connecting slots 201. The main body 22 extends integrally upward from the base 21, and two grouting holes 202 are formed on the precast body 20, communicating with the two connecting slots 201. In this embodiment, the length of the precast body 20 is 3-5m. Both ends of the precast body 20 have connecting notches 203. The top of the base 21 has inclined surfaces 204 on both sides, and the two grouting holes 202 are located at the midpoint of the two inclined surfaces 204. Additionally, the base 21 has a base 211 at its bottom, the base 211 having an isosceles trapezoidal cross-section, the two connecting slots 201 being located on both sides of the base 211, and the base 211 abutting against the top plate 11 of the main beam.

[0036] The reinforcing steel skeleton 30 is bound and fixed in the precast body 20. Part of the reinforcing steel skeleton 30 is located within the two connecting slots 201, and is coupled to the first reinforcing steel 51 and the second reinforcing steel 52. In this embodiment, the reinforcing steel skeleton 30 has multiple third U-shaped portions 301, each located within one of the two connecting slots 201. These portions form snap-fits with the first U-shaped portions 511 and the second U-shaped portions 521, and are coupled by inserting longitudinal reinforcing steel 53 into the snap-fits. Specifically, the reinforcing steel skeleton 30 comprises multiple third reinforcing steel 31, multiple vertical reinforcing steel 32, multiple tie rods 33, and multiple transverse reinforcing steel 34.

[0037] The two side seats 40 are formed by secondary pouring of concrete into the two connecting slots 201 through the two grouting holes 202, and the two side seats 40 completely fill the two connecting slots 201 respectively. In this embodiment, the reinforced concrete layer 12, the waterproof layer 13 and the asphalt concrete layer 14 are all located on the periphery of the two side seats 40.

[0038] The manufacturing and construction process of this embodiment is described in detail below:

[0039] First, the steel reinforcement cage 30 is fabricated in the factory, and the precast body 20 is precast using concrete. The precast body 20 is then tied and fixed together with the steel reinforcement cage 30. Next, the precast body 20 is hoisted to the construction site. The main beam top plate 11 is pre-fabricated at the construction site, with the first steel reinforcement 51 and the second steel reinforcement 52 embedded in it. After the precast body 20 is hoisted and placed on the main beam top plate 11, the first steel reinforcement 51 and the second steel reinforcement 52 are inserted into the two connecting slots 201 respectively. Then, the longitudinal steel reinforcement 53 is inserted longitudinally, so that the first steel reinforcement 51 and the second steel reinforcement 52 are coupled and connected to the steel reinforcement cage 30. Then, non-shrink fine aggregate concrete is pressed into the connecting slots 201 from the grouting hole 202. The grade of the concrete poured should be one grade higher than that of the precast body 20 to form the two side seats 40 and form a whole. Finally, the reinforced concrete layer 12, the waterproof layer 13, and the asphalt concrete layer 14 are laid in sequence.

[0040] The key design feature of this invention is that by setting up a prefabricated body and having two connecting slots recessed on the bottom of both sides of the base, the steel reinforcement skeleton can be coupled and connected with the first and second steel reinforcements after the prefabricated body is hoisted. Then, a second concrete pour is carried out to form the two side seats. This allows for factory prefabrication with low precision requirements, rapid on-site hoisting, greatly accelerating the construction progress, and reducing noise and dust pollution generated during construction. It is green and environmentally friendly and can be widely promoted and used.

[0041] The technical principles of this utility model have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this utility model without any inventive effort, and these embodiments will all fall within the scope of protection of this utility model.

Claims

1. A prefabricated median crash barrier structure device for reserving a connection slot, characterized by: The structure includes a beam, a precast body, a reinforcing steel skeleton, and two side supports. The beam has a first and a second reinforcing steel bar embedded in it. The precast body is made of concrete and rests against the beam. It includes a base and a main body. Two connecting slots are recessed on the bottom of each side of the base, extending longitudinally. The first and second reinforcing steel bars extend into these slots. The main body extends integrally upward from the base and has two grouting holes that communicate with the two connecting slots. The reinforcing steel skeleton is bound and fixed within the precast body, with a portion of it located within the two connecting slots. The skeleton is coupled to the first and second reinforcing steel bars. The two side supports are formed by secondary concrete pouring through the two grouting holes into the connecting slots, completely filling each slot.

2. A prefabricated median crash barrier structure device reserving a connecting slot according to claim 1, characterized in that: The first reinforcing bar has a first U-shaped portion, the second reinforcing bar has a second U-shaped portion, and the reinforcing bar skeleton has multiple third U-shaped portions. The multiple third U-shaped portions are respectively located in two connecting slots. The multiple third U-shaped portions form a snap-fit ​​with the first U-shaped portion and the second U-shaped portion, and a longitudinal reinforcing bar is inserted into the snap-fit ​​for coupling connection.

3. A prefabricated central crash barrier structure device reserving a connecting slot according to claim 2, characterized in that: The first and second reinforcing bars are multiple longitudinally spaced bars, and the distance between two adjacent first reinforcing bars and two adjacent second reinforcing bars is 100-150mm.

4. A prefabricated median crash barrier structure device reserving a connecting slot as claimed in claim 1, characterized in that: The base has inclined surfaces on both sides of its top, and the two grouting holes are located at the middle of the two inclined surfaces.

5. A prefabricated median crash barrier structure device reserving a connecting slot according to claim 1, characterized in that: The base has a base at its bottom, and the two connecting slots are located on both sides of the base. The beam includes a main beam top plate, a reinforced concrete layer, a waterproof layer, and an asphalt concrete layer. The base rests on the main beam top plate, the first and second reinforcing bars are embedded in the main beam top plate, the reinforced concrete layer is laid on the surface of the main beam top plate and located around the two side bases, the waterproof layer is laid on the surface of the reinforced concrete layer and located around the two side bases, and the asphalt concrete layer is laid on the surface of the waterproof layer and located around the two side bases.

6. A prefabricated median crash barrier structure device reserving a connecting slot according to claim 1, characterized in that: The length of the prefabricated body is 3-5m.

7. A prefabricated median crash barrier structure device reserving a connecting slot according to claim 1, characterized in that: Both ends of the prefabricated body have connection notches.

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