Prefabricated comprehensive anti-collision guardrail

Abstract

The invention relates to the technical field of guardrail construction, and discloses a prefabricated comprehensive anti-collision guardrail which comprises a plurality of prefabricated concrete guardrails and a plurality of prefabricated concrete bridge deck slabs, reinforcement cages are arranged in the prefabricated concrete guardrails, and main pipes are fixedly connected to the inner sides of the reinforcement cages; wherein the top of one reinforcement cage is fixedly connected with a street lamp embedded flange, one side of the street lamp embedded flange is connected with a street lamp line pipe in an inserted mode, the inner side of one reinforcement cage is fixedly connected with a line box, and the main pipe and the street lamp line pipe are both connected with the line box in an inserted mode. And the top of one reinforcing steel bar reinforcing cage is fixedly connected with two portal frame embedded flanges. The construction time of the bridge deck guardrail is shortened to a great extent, the whole construction process is more efficient, various equipment facilities needed in the construction stage and the follow-up operation stage are integrated, and the requirement for follow-up omni-directional use of the guardrail is comprehensively met.

Description

Technical Field

[0001] This invention relates to the field of guardrail construction technology, specifically to a prefabricated integrated crash barrier. Background Technology

[0002] In the current field of municipal infrastructure construction, the improvement of construction speed has become a significant trend. Prefabricated bridge construction systems, with their advantages of excellent construction quality, fast construction speed, and minimal impact on the surrounding environment, are being increasingly promoted and applied as a green construction method.

[0003] Traditional municipal bridge construction methods, especially for crash barriers, typically employ on-site casting. This method requires the entire bridge deck paving to be completed before construction can begin, which not only lengthens the construction period but can sometimes lead to project delays. Furthermore, modern urban bridge construction necessitates the pre-embedding of numerous electrical wiring, streetlights, signage, and lightning protection grounding facilities within the guardrails after rebar tying and before formwork erection. This further complicates and slows down construction. Simultaneously, due to limitations in on-site construction conditions, the accuracy of pre-embedding work is often difficult to guarantee, frequently requiring extensive rework and corrections later in the construction process, thus increasing both project and time costs. Moreover, with the increasing use of precast bridge deck panels, traditional cast-in-place guardrails require pre-embedding rebar within the precast panels before on-site casting, making guardrail construction even more complex and increasing the difficulty of transporting and installing the bridge deck panels. Summary of the Invention

[0004] (a) Technical problems to be solved In view of the shortcomings of the existing technology, the present invention provides a prefabricated integrated crash barrier, which mainly solves the problems of long construction period and more complicated construction of traditional crash barriers, resulting in the delay of project progress.

[0005] (II) Technical Solution To achieve the above objectives, the present invention provides the following technical solution: A prefabricated integrated crash barrier includes multiple prefabricated concrete guardrails and multiple prefabricated concrete bridge decks. The prefabricated concrete guardrails have internal steel reinforcement cages, with a main pipe fixedly connected to the inner side of each cage. A street light pre-embedded flange is fixedly connected to the top of one of the steel reinforcement cages, and a street light conduit is inserted into one side of the flange. A junction box is fixedly connected to the inner side of one of the steel reinforcement cages, with both the main pipe and the street light conduit inserted into the junction box. Two pre-embedded gantry frames are fixedly connected to the top of one of the steel reinforcement cages. The flange has guardrail embedded parts fixedly connected to both sides of the bottom of the steel reinforcement cage. The precast concrete guardrail has two reserved insertion holes at both ends, and insertion bars are inserted into the reserved insertion holes. The precast concrete bridge deck has an exposed steel reinforcement cage inside, and a bridge deck embedded part is provided at the top of the exposed steel reinforcement cage. Multiple second connecting bars are fixedly connected to the bottom of the bridge deck embedded part, and the second connecting bars are tied to the exposed steel reinforcement cage of the bridge deck. The bridge deck embedded part and the guardrail embedded part are welded together, and the insertion bars are welded to the exposed steel reinforcement cage of the bridge deck.

[0006] Furthermore, a grounding flat steel is fixedly connected to the top of the steel reinforcement cage, and the two ends of the grounding flat steel are integrally formed with first connecting bars, and two adjacent first connecting bars are welded together. A grounding bar is fixedly connected to the bottom of the first connecting bar, and the grounding bar is located on both sides of the main pipe.

[0007] Based on the aforementioned scheme, guardrail brackets are fixedly connected to both ends of the top of the steel reinforcement cage, and guardrail body is fixedly connected to the top of the guardrail brackets.

[0008] As a further embodiment of the present invention, the top of the pre-embedded flange of the gantry is fixedly connected to the gantry body, and the gantry body has a triangular structure, with the top flange of the gantry body fixedly connected to the top of the gantry body.

[0009] Furthermore, multiple reinforcing ribs are fixedly connected between the two guardrail embedded parts.

[0010] Based on the aforementioned scheme, a lifting sleeve is fixedly connected to the top of the steel reinforcement cage.

[0011] As a further embodiment of the present invention, both the insert and the second connecting bar are L-shaped structures.

[0012] Furthermore, both the guardrail embedded parts and the bridge deck embedded parts are made of steel plates, and the thickness of the guardrail embedded parts and the bridge deck embedded parts is between 1.5cm and 2cm.

[0013] (III) Beneficial Effects Compared with the prior art, the present invention provides a prefabricated integrated crash barrier, which has the following beneficial effects: 1. This invention adopts prefabricated integrated crash barriers, replacing the on-site casting method with factory prefabrication. This prefabrication assembly method is not affected by the bridge deck paving progress and can be carried out during, after, and during the rebar binding stage. A new connection method is adopted, using dry connection to connect the prefabricated bridge deck and crash barriers, solving the drawback of needing to use pre-reserved rebar for connection. This facilitates the transportation of bridge deck and improves the efficiency of guardrail installation. Not only is the quality significantly improved, but the production efficiency is also greatly increased, and the appearance is also more aesthetically pleasing.

[0014] This invention employs integrated pipeline design technology, pre-embedding all embedded parts, pipelines, grounding, and other measures within the prefabricated integrated crash barrier, connecting them in pairs to form a unified whole. This integrates various equipment and facilities required for both the construction and subsequent operation phases. It solves the difficulty of reserving pipelines on-site, fully meeting the needs of the barrier's subsequent all-around use. It effectively avoids the drawbacks of secondary destructive work often required in traditional processes, thereby reducing environmental impact and construction costs. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of a prefabricated integrated crash barrier proposed in this invention; Figure 2 This is a partially enlarged structural schematic diagram of a prefabricated integrated crash barrier proposed in this invention; Figure 3 This is a partial exploded structural diagram of a prefabricated integrated crash barrier proposed in this invention; Figure 4 This is a schematic diagram of the first internal exploded structure of a prefabricated integrated crash barrier proposed in this invention; Figure 5 This is a schematic diagram of the second internal exploded structure of a prefabricated integrated crash barrier proposed in this invention; Figure 6 This is a schematic diagram of the internal structure of the prefabricated panel of a prefabricated integrated crash barrier proposed in this invention.

[0016] In the diagram: 1. Precast concrete guardrail; 2. Precast concrete bridge deck; 201. Exposed reinforcing cage of bridge deck; 3. Main pipe; 4. Reserved insertion hole for reinforcing bars; 5. Grounding flat steel; 501. First connecting bar; 502. Grounding bar; 6. Street light embedded flange; 7. Street light conduit; 8. Guardrail bracket; 9. Guardrail body; 10. Lifting sleeve; 11. Junction box; 12. Gantry embedded flange; 13. Gantry body; 14. Gantry top flange; 15. Guardrail embedded parts; 1501. Reinforcing bar; 16. Bridge deck embedded parts; 1601. Second connecting bar; 17. Reinforcing cage; 18. Inserted bar. Detailed Implementation The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0017] Reference Figures 1-6 A precast integrated crash barrier includes multiple precast concrete guardrails 1 and multiple precast concrete bridge decks 2. Both the precast concrete guardrails 1 and the precast concrete bridge decks 2 are precast in a high-strength concrete factory, serving as the main body of the product and the bridge deck pavement layer, respectively. The precast concrete guardrails 1 have internal steel reinforcement cages 17, and the inner side of the steel reinforcement cages 17 is bound with main pipes 3 for later wiring conduits. The top of one of the steel reinforcement cages 17 is bound with a streetlight embedded flange 6 for use as a light pole fixing base. A street light conduit 7, used as a conduit for street light wires, is inserted into one side of flange 6. A junction box 11 for electrical connection is bundled inside one of the steel reinforcement cages 17, and both the main pipe 3 and the street light conduit 7 are inserted into the junction box 11. Two gantry embedded flanges 12 are bundled to the top of one of the steel reinforcement cages 17. Guardrail embedded parts 15 are bundled to both sides of the bottom of the steel reinforcement cage 17. Two reserved insertion holes 4 made of corrugated metal pipes are opened at both ends of the precast concrete guardrail 1, and insertion bars 18 are inserted into the reserved insertion holes 4.

[0018] The precast concrete bridge deck 2 has an exposed steel reinforcement cage 201 inside, and a bridge deck embedded part 16 is provided on the top of the exposed steel reinforcement cage 201. Multiple second connecting bars 1601 are welded to the bottom of the bridge deck embedded part 16, and the second connecting bars 1601 are tied to the exposed steel reinforcement cage 201. The bridge deck embedded part 16 and the guardrail embedded part 15 are welded together, and the dowel bar 18 is welded to the exposed steel reinforcement cage 201.

[0019] The top of the reinforcing cage 17 is bound with a grounding flat steel 5, which is made of copper-plated flat iron and embedded along its length for lightning protection grounding. Both ends of the grounding flat steel 5 are integrally formed with first connecting ribs 501, and adjacent first connecting ribs 501 are welded together. Grounding ribs 502 are welded to the bottom of the first connecting ribs 501, and the grounding ribs 502 are located on both sides of the main pipe 3. Guardrail brackets 8 are bound to both ends of the top of the reinforcing cage 17, and a guardrail body 9 is welded to the top of the guardrail brackets 8. The tops of the pre-embedded flanges 12 of the gantry are all fixed with gantry bodies 13 by bolts. Furthermore, the gantry body 13 has a triangular structure, and a gantry top flange 14 is welded to the top of the gantry body 13. The gantry top flange 14 is used to connect the signboard for subsequent secondary installation. Multiple reinforcing ribs 1501 are welded between the two guardrail embedded parts 15. A lifting sleeve 10 is welded to the top of the steel reinforcement cage 17 for lifting components during production and installation. The insert rib 18 and the second connecting rib 1601 are both L-shaped structures. The guardrail embedded parts 15 and the bridge deck embedded parts 16 are both made of steel plates, and the thickness of the guardrail embedded parts 15 and the bridge deck embedded parts 16 is between 1.5cm and 2cm.

[0020] The working principle of this embodiment is as follows: During production, the mold is first assembled, and the steel reinforcement cage 17 inside the precast concrete guardrail 1 and the precast concrete bridge deck 2 and the exposed steel reinforcement cage 201 of the bridge deck are tied together. Then, the main pipe 3, the reserved insertion hole 4, the grounding flat steel 5, the street light embedded flange 6, the street light conduit 7, the lifting sleeve 10, the junction box 11, the gantry embedded flange 12 and the guardrail embedded part 15 are placed in the steel reinforcement cage 17 inside the precast concrete guardrail 1 by tying together. The bridge deck embedded part 16 and the second connecting bar 1601 are placed in the exposed steel reinforcement cage 201 of the bridge deck inside the precast concrete bridge deck 2 by tying together. Then, concrete is poured to form the precast concrete guardrail 1 and the precast concrete bridge deck 2. Finally, precast concrete bridge deck 2 is installed on top of the steel box girder of the bridge deck. The reinforcing bars 18 are welded to the corresponding positions of the exposed steel cage 201 on the bridge deck. Then, the shackles are screwed into the lifting sleeve 10, and the whole precast concrete guardrail 1 is lifted. The reserved reinforcing bar holes 4 in the precast concrete guardrail 1 are aligned with the reinforcing bars 18, and the guardrail is installed from top to bottom. Cement slurry is laid at the bottom of the precast concrete guardrail 1, and the overall elevation is adjusted. After the elevation adjustment is completed, the guardrail embedded parts 15 are welded and fixed to the bridge deck embedded parts 16. High-strength mortar is poured into the reserved reinforcing bar holes 4. Finally, the bottom hole of the gantry body 13 is aligned with the bolt in the gantry embedded flange 12. After the bolt passes through the hole, the nut is tightened. The grounding flat steel 5 between two adjacent guardrails is fully overlapped and then welded. The overall installation is completed.

[0021] All electrical components mentioned in this article are connected to an external main controller and 220V AC mains power, and the main controller can be a conventional known device such as a computer that can control it.

[0022] In the description herein, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0023] In the description herein, it should be noted that relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0024] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A prefabricated integrated crash barrier, comprising multiple prefabricated concrete guardrails (1) and multiple prefabricated concrete bridge decks (2), characterized in that, The precast concrete guardrail (1) is equipped with a steel reinforcement cage (17) inside, and a main pipe (3) is fixedly connected to the inner side of the steel reinforcement cage (17). A street light embedded flange (6) is fixedly connected to the top of one of the steel reinforcement cages (17), and a street light conduit (7) is inserted into one side of the street light embedded flange (6). A junction box (11) is fixedly connected to the inner side of one of the steel reinforcement cages (17), and both the main pipe (3) and the street light conduit (7) are inserted into the junction box (11). Two gantry embedded flanges (12) are fixedly connected to the top of one of the steel reinforcement cages (17), and guardrail embedded parts are fixedly connected to both sides of the bottom of the steel reinforcement cage (17). (15) Two reserved bar holes (4) are opened at both ends of the precast concrete guardrail (1), and bar (18) is inserted into the reserved bar holes (4). The precast concrete bridge deck (2) is provided with an exposed steel cage (201) inside the bridge deck, and a bridge deck embedded part (16) is provided at the top of the exposed steel cage (201). Multiple second connecting bars (1601) are fixedly connected to the bottom of the bridge deck embedded part (16), and the second connecting bars (1601) are tied to the exposed steel cage (201) of the bridge deck. The bridge deck embedded part (16) and the guardrail embedded part (15) are welded together, and the bar (18) is welded to the exposed steel cage (201) of the bridge deck.

2. The prefabricated integrated crash barrier according to claim 1, characterized in that, The top of the steel reinforcement cage (17) is fixedly connected to a grounding flat steel (5), and the two ends of the grounding flat steel (5) are integrally formed with first connecting bars (501), and two adjacent first connecting bars (501) are welded together. The bottom of the first connecting bar (501) is fixedly connected to a grounding bar (502), and the grounding bar (502) is located on both sides of the main pipe (3).

3. The prefabricated integrated crash barrier according to claim 1, characterized in that, The top two ends of the steel reinforcement cage (17) are fixedly connected to guardrail brackets (8), and the top of the guardrail brackets (8) is fixedly connected to the guardrail body (9).

4. A prefabricated integrated crash barrier according to claim 1, characterized in that, The top of each of the pre-embedded flanges (12) of the gantry is fixedly connected to the gantry body (13), and the gantry body (13) is a triangular structure, with the top of the gantry body (13) fixedly connected to the gantry top flange (14).

5. A prefabricated integrated crash barrier according to claim 1, characterized in that, Multiple reinforcing ribs (1501) are fixedly connected between the two guardrail embedded parts (15).

6. A prefabricated integrated crash barrier according to claim 1, characterized in that, The top of the steel reinforcement cage (17) is fixedly connected to a lifting sleeve (10).

7. A prefabricated integrated crash barrier according to claim 1, characterized in that, Both the insert (18) and the second connecting bar (1601) are L-shaped structures.

8. A prefabricated integrated crash barrier according to claim 1, characterized in that, Both the guardrail embedded part (15) and the bridge deck embedded part (16) are made of steel plate, and the thickness of the guardrail embedded part (15) and the bridge deck embedded part (16) is between 1.5cm and 2cm.

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