A full-precast bolted central crash barrier structure device

Abstract

The utility model discloses a kind of full prefabricated bolt connection central anti-collision guardrail structure devices, including beam body, prefabricated body and reinforcing cage;Reinforcing bracket is embedded on beam body, reinforcing bracket has first bolt and second bolt;Prefabricated body includes base and main body, first bolt hole and second bolt hole are respectively set up in the two sides of this base. By embedding reinforcing bracket on beam body, the reinforcing bracket has first bolt and second bolt, and cooperate first bolt hole and second bolt hole set on prefabricated body, while first steel plate and second steel plate are set on reinforcing cage, first steel plate and second steel plate are embedded on prefabricated body, only need to make each bolt pass through corresponding bolt hole and corresponding through hole after with corresponding nut screwing connection fixed into whole in construction site, factory prefabrication can be realized, fast hoisting in site, do not affect bridge deck pavement construction procedure, do not need subsequent pouring, effectively speed up construction progress, green and environmental protection, can be widely used.

Description

Technical Field

[0001] This utility model relates to the field of crash barriers, and in particular to a fully prefabricated bolt-connected central crash barrier structure device. 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 median crash barriers on urban roads or highways are constructed using monolithic cast-in-place concrete. While this method offers the advantage of reliable anchoring, it suffers from drawbacks such as long construction periods, the need for numerous formwork panels, low construction efficiency, difficulty in ensuring pouring quality, and noise and dust pollution during construction. Existing prefabricated crash barriers, using bolts and steel structures for connection, suffer from weak impact resistance or complex construction. Furthermore, some prefabricated crash barriers still require formwork and concrete pouring at the outer load-bearing connections, affecting the bridge deck paving progress. 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 fully prefabricated bolt-connected central crash barrier structure device, which can effectively solve the problems of long construction period, high construction difficulty 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 bolt-connected central crash barrier structure includes a beam, a prefabricated body, and a reinforcing steel frame. A reinforcing steel support is embedded in the beam, and the support has a first bolt and a second bolt, both extending upwards from the beam. The prefabricated body includes a base and a main body. First bolt holes and second bolt holes are respectively formed on both sides of the base, extending downwards to the bottom surface of the base. The first bolt and second bolt pass through the first bolt holes and second bolt holes from bottom to top and are fixedly connected to a first nut and a second nut, respectively. The reinforcing steel frame is embedded and fixed within the prefabricated body. A first steel plate and a second steel plate are fixed to the reinforcing steel frame, respectively embedded on both sides of the base. The first steel plate has a first through hole of the same size as the first bolt hole and coaxially connected. The second steel plate has a second through hole of the same size as the second bolt hole and coaxially connected.

[0007] Preferably, the base has a first groove and a second groove recessed on both sides, the first bolt hole is recessed in the bottom surface of the first groove, the second bolt hole is recessed in the bottom surface of the second groove, and the first steel plate and the second steel plate are respectively embedded in the first groove and the second groove.

[0008] Preferably, there are multiple first slots and second slots arranged longitudinally at intervals. The bottom surface of each first slot is recessed to form a first bolt hole, and the bottom surface of each second slot is recessed to form a second bolt hole. Correspondingly, there are multiple first bolts and multiple second bolts, and there are also multiple first steel plates and multiple second steel plates.

[0009] Preferably, both the first bolt hole and the second bolt hole are filled with epoxy resin grout, and both the first groove and the second groove are filled with epoxy mortar or polymer mortar.

[0010] Preferably, the first bolt hole, the second bolt hole, the first through hole, and the second through hole are all elliptical holes, and the elliptical holes are arranged longitudinally.

[0011] Preferably, the first steel plate and the second steel plate are 80mm in length, 80mm in width, and 10mm in thickness.

[0012] Preferably, the reinforcing steel cage has two first U-shaped reinforcing bars, two first transverse reinforcing bars, two second U-shaped reinforcing bars, and two second transverse reinforcing bars. The two first U-shaped reinforcing bars, two first transverse reinforcing bars, two second U-shaped reinforcing bars, and two second transverse reinforcing bars are all pre-embedded in the base. The two first U-shaped reinforcing bars and two first transverse reinforcing bars are located below the first steel plate, and the two second U-shaped reinforcing bars and two second transverse reinforcing bars are located below the second steel plate.

[0013] Preferably, the diameters of the two first U-shaped steel bars, the two first transverse steel bars, the two second U-shaped steel bars, and the two second transverse steel bars are all 6-10 mm.

[0014] Preferably, the length of the prefabricated body is 3-5m.

[0015] Preferably, one end of the prefabricated body is provided with a mortise and tenon, and the other end of the prefabricated body is provided with a tenon that matches the mortise and tenon.

[0016] Compared with the prior art, this utility model has obvious advantages and beneficial effects. Specifically, as can be seen from the above technical solution:

[0017] By pre-embedding steel reinforcement supports on the beam, which have first and second bolts, and cooperating with the first and second bolt holes on the precast body, and simultaneously setting first and second steel plates on the steel reinforcement skeleton, with the first and second steel plates pre-embedded in the precast body, on the construction site, each bolt only needs to pass through the corresponding bolt holes and corresponding through holes and be screwed into the corresponding nuts to be fixed into a whole. This allows for factory prefabrication and rapid on-site hoisting, without affecting the bridge deck paving construction process, eliminating the need for subsequent pouring, effectively accelerating the construction progress, and being green and environmentally friendly, it can be widely promoted and used. Attached Figure Description

[0018] Figure 1 This is a front view of a preferred embodiment of the present invention;

[0019] Figure 2 This is a top view of a preferred embodiment of the present invention;

[0020] Figure 3 This is a side view of a preferred embodiment of the present invention;

[0021] Figure 4 This is a cross-sectional view of a preferred embodiment of the present invention.

[0022] Explanation of reference numerals in the attached diagram:

[0023] 10. Beam body; 11. Main beam top slab

[0024] 12. Reinforced concrete layer 13. Waterproof layer

[0025] 14. Asphalt concrete layer; 20. Precast body

[0026] 21. Base 22. Main body

[0027] 23. Epoxy resin grouting 24. Epoxy mortar or polymer mortar

[0028] 201, First bolt hole; 202, Second bolt hole

[0029] 203, First slot; 204, Second slot

[0030] 205. Mortise and tenon; 206. Tenon

[0031] 30. Reinforcing steel cage; 31. First steel plate

[0032] 32. Second steel plate; 33. First U-shaped reinforcing bar

[0033] 34. First transverse reinforcement bar; 35. Second U-shaped reinforcement bar

[0034] 36. Second transverse reinforcement; 37. Reinforcing steel bars

[0035] 38. Connecting reinforcing bar 301, first through hole

[0036] 302, Second through hole 40, Rebar support

[0037] 41. First bolt 42. Second bolt

[0038] 51. First nut 52. Second nut

[0039] 53. First gasket 54. Second gasket Detailed Implementation

[0040] Please refer to Figures 1 to 4 As shown, it illustrates the specific structure of a preferred embodiment of the present invention, including a beam 10, a prefabricated body 20, and a steel reinforcement frame 30.

[0041] A steel reinforcement support 40 is pre-embedded in the beam 10. The steel reinforcement support 40 has a first bolt 41 and a second bolt 42, both extending upwards from the beam 10. 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 steel reinforcement support 40 is 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 steel reinforcement support 40 is a U-shaped steel bar with a diameter of 20-28 mm. The two ends of the U-shaped steel bar are machined to form the first bolt 41 and the second bolt 42. Multiple U-shaped steel bars are arranged longitudinally at intervals, with a spacing of 200 mm between adjacent U-shaped steel bars. Each U-shaped steel bar has a first bolt 41 and a second bolt 42 formed at both ends.

[0042] The precast body 20 includes a base 21 and a main body 22. The base 21 has a first bolt hole 201 and a second bolt hole 202 on both sides, extending downwards to the bottom surface of the base 21. A first bolt 41 and a second bolt 42 pass through the first bolt hole 201 and the second bolt hole 202 from bottom to top and are then fixedly connected to a first nut 51 and a second nut 52. In this embodiment, the base 21 rests against the surface of the main beam top plate 11, and the reinforced concrete layer 12, waterproof layer 13, and asphalt concrete layer 14 are all located around the base 21. The base 21 has a first groove 203 and a second groove 204 recessed on both sides. The first bolt hole 201 is recessed into the bottom surface of the first groove 203, and the second bolt hole 202 is recessed into the bottom surface of the second groove 204. Furthermore, the first slot 203 and the second slot 204 are multiple longitudinally spaced, with a first bolt hole 201 recessed on the bottom surface of each first slot 203 and a second bolt hole 202 recessed on the bottom surface of each second slot 204. Both the first bolt hole 201 and the second bolt hole 204 are elliptical holes, arranged longitudinally. The prefabricated body 20 has a length of 3-5m. Additionally, one end of the prefabricated body 20 has a tenon 205, and the other end has a tenon 206 that matches the tenon 205, facilitating the splicing of multiple prefabricated bodies 20. Furthermore, the first bolt hole 201 and the second bolt hole 202 are filled with epoxy resin grout 23, and the first slot 203 and the second slot 204 are filled with epoxy mortar or polymer mortar 24. Furthermore, a first washer 53 and a second washer 54 are respectively fitted onto the first bolt 41 and the second bolt 42, and the first nut 51 and the second nut 52 press against the first washer 53 and the second washer 54 respectively.

[0043] The reinforcing steel frame 30 is embedded and fixed in the precast body 20. A first steel plate 31 and a second steel plate 32 are fixed to the reinforcing steel frame 30. The first steel plate 31 and the second steel plate 32 are respectively embedded on both sides of the base 21. The first steel plate 31 has a first through hole 301, which is the same size as and coaxially connected to the first bolt hole 201. The second steel plate 32 has a second through hole 302, which is the same size as and coaxially connected to the second bolt hole 202. In this embodiment, the first steel plate 31 and the second steel plate 32 are respectively embedded in the first slot 203 and the second slot 204. There are multiple first steel plates 31 and the second steel plate 32. The first through hole 301 and the second through hole 302 are both elliptical holes, arranged longitudinally. The first steel plate 31 and the second steel plate 32 have a length of 80 mm, a width of 80 mm, and a thickness of 10 mm. The reinforcing steel cage 30 has two first U-shaped reinforcing bars 33, two first transverse reinforcing bars 34, two second U-shaped reinforcing bars 35, and two second transverse reinforcing bars 36. All three are embedded in the base 21. The first U-shaped reinforcing bars 33 and 34 are located below the first steel plate 31, and the second U-shaped reinforcing bars 35 and 36 are located below the second steel plate 32. The diameter of each of the first U-shaped reinforcing bars 33, 34, 35, and 36 is 6-10 mm. Additionally, the reinforcing steel cage 30 has multiple load-bearing reinforcing bars 37, arranged longitudinally at intervals of 100 mm between adjacent bars to increase overall strength. The diameter of each load-bearing reinforcing bar 37 is 12-16 mm. In addition, the reinforcing steel cage 30 has multiple connecting reinforcing bars 38, which are arranged longitudinally at intervals, with a spacing of 200mm between adjacent connecting reinforcing bars 38. These connecting reinforcing bars 38 are staggered with the bolt holes, and their diameter is 16-22mm. Furthermore, the reinforcing steel cage 30 also has U-shaped bars (not shown in the figure), which are located within the tenon 206 and have a diameter of 8-12mm.

[0044] The manufacturing and construction process of this embodiment is described in detail below:

[0045] First, the steel reinforcement frame 30 is fabricated in the factory, and the precast body 20 is precast using concrete, so that the precast body 20 is embedded and fixed together with the steel reinforcement frame 30. Then, the precast body 20 is hoisted to the construction site. The main beam top plate 11 is pre-constructed at the construction site, and the main beam top plate 11 is pre-embedded with steel reinforcement supports 40. After the precast body 20 is hoisted and placed on the main beam top plate 11, the first bolt 41 passes through the first bolt hole 201 and the first through hole 301 from top to bottom and then connects with the first washer 5. 3. The second bolt 42 is fixedly connected to the first nut 51. The second bolt 42 passes through the second bolt hole 202 and the second through hole 302 from top to bottom and is fixedly connected to the second washer 54 and the second nut 52. Then, epoxy resin grout 23 is filled into the first bolt hole 201 and the second bolt hole 202. Then, the first groove 203 and the second groove 204 are filled with epoxy mortar or polymer mortar 24. Finally, the reinforced concrete layer 12, the waterproof layer 13 and the asphalt concrete layer 14 are laid in sequence.

[0046] The key design feature of this invention is that a steel reinforcement support is pre-embedded in the beam body. This support has a first bolt and a second bolt, and the precast body has first bolt holes and second bolt holes. Simultaneously, a first steel plate and a second steel plate are set on the steel reinforcement frame. The first and second steel plates are pre-embedded in the precast body. On the construction site, each bolt only needs to pass through the corresponding bolt hole and the corresponding through hole and be screwed into the corresponding nut to be fixed into a whole. This allows for factory prefabrication and rapid on-site hoisting without affecting the bridge deck paving construction process. No subsequent pouring is required, which effectively speeds up the construction progress. It is green and environmentally friendly and can be widely promoted and used.

[0047] 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 bolt-connected central crash barrier structure, characterized in that: The system includes a beam, a precast body, and a reinforcing steel frame. A reinforcing steel support is embedded in the beam, and the support has a first bolt and a second bolt, both extending upwards from the beam. The precast body includes a base and a main body. The base has a first bolt hole and a second bolt hole on each side, extending downwards to the bottom surface of the base. The first bolt and the second bolt pass through the first bolt hole and the second bolt hole from bottom to top and are fixedly connected to a first nut and a second nut, respectively. The reinforcing steel frame is embedded and fixed within the precast body. A first steel plate and a second steel plate are fixed to the reinforcing steel frame, embedded on both sides of the base. The first steel plate has a first through hole, the same size as the first bolt hole and coaxially connected. The second steel plate has a second through hole, the same size as the second bolt hole and coaxially connected.

2. The prefabricated bolt-connected central crash barrier structure as described in claim 1, characterized in that: The base has a first groove and a second groove recessed on both sides, the first bolt hole is recessed on the bottom surface of the first groove, the second bolt hole is recessed on the bottom surface of the second groove, and the first steel plate and the second steel plate are respectively embedded in the first groove and the second groove.

3. The prefabricated bolt-connected central crash barrier structure device as described in claim 2, characterized in that: The first slot and the second slot are both arranged longitudinally at intervals. The bottom surface of each first slot is recessed to form a first bolt hole, and the bottom surface of each second slot is recessed to form a second bolt hole. Correspondingly, there are multiple first bolts and multiple second bolts, and there are also multiple first steel plates and multiple second steel plates.

4. The prefabricated bolt-connected central crash barrier structure device as described in claim 2, characterized in that: The first and second bolt holes are filled with epoxy resin grout, and the first and second grooves are filled with epoxy mortar or polymer mortar.

5. The prefabricated bolt-connected central crash barrier structure device as described in claim 1, characterized in that: The first bolt hole, the second bolt hole, the first through hole, and the second through hole are all elliptical holes, and the elliptical holes are arranged longitudinally.

6. The prefabricated bolt-connected central crash barrier structure device as described in claim 1, characterized in that: The first steel plate and the second steel plate are 80mm long, 80mm wide, and 10mm thick.

7. The prefabricated bolt-connected central crash barrier structure device as described in claim 1, characterized in that: The steel reinforcement cage has two first U-shaped steel bars, two first transverse steel bars, two second U-shaped steel bars, and two second transverse steel bars. The two first U-shaped steel bars, two first transverse steel bars, two second U-shaped steel bars, and two second transverse steel bars are all embedded in the base. The two first U-shaped steel bars and two first transverse steel bars are located below the first steel plate, and the two second U-shaped steel bars and two second transverse steel bars are located below the second steel plate.

8. The prefabricated bolt-connected central crash barrier structure device as described in claim 7, characterized in that: The diameters of the two first U-shaped steel bars, the two first transverse steel bars, the two second U-shaped steel bars, and the two second transverse steel bars are all 6-10mm.

9. The prefabricated bolt-connected central crash barrier structure as described in claim 1, characterized in that: The length of the prefabricated body is 3-5m.

10. The prefabricated bolt-connected central crash barrier structure device as described in claim 1, characterized in that: One end of the prefabricated body is provided with a mortise and tenon, and the other end of the prefabricated body is provided with a tenon that matches the mortise and tenon.

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