Bridge edge guardrail

Abstract

The utility model relates to the technical field of bridge construction, in particular to a bridge edge guardrail. The bridge edge guardrail comprises a bridge, connecting assemblies, embedded steel bars and guardrail assemblies. The connecting assembly comprises a first connecting shaft with a bent section; the embedded steel bars are fixed to a bridge, the ends, provided with bent sections, of the first connecting shafts are connected with the embedded steel bars, the other ends of the first connecting shafts are connected with the guardrail assembly, and the state that the first connecting shafts hook the embedded steel bars to be located between the first connecting shafts and the guardrail assembly through the bent sections is formed; the other side face of the embedded steel bar abuts against the first connecting shaft, and the first connecting shaft is matched with the embedded steel bar to position the guardrail assembly. In this way, the problem that an existing temporary guardrail for the bridge is poor in position fixity is solved.

Description

Technical Field

[0001] This utility model relates to the field of bridge construction technology, and more specifically, to a bridge edge guardrail. Background Technology

[0002] During bridge construction, in order to ensure the safety of construction workers in the construction section, temporary guardrails are usually erected on both sides of the construction section. The conventional construction method is to use scaffolding steel pipes as columns, and weld the column steel pipes to the pre-embedded steel bars of the beam's anti-collision guardrail. This is extremely inconvenient to install and dismantle, has high construction costs, and the welding process can easily burn the pre-embedded steel bars of the beam, posing potential quality hazards.

[0003] The existing Chinese patent publication number "CN215632127U", entitled "Temporary Protective Device and Bridge Construction Protective System for Bridge Construction", discloses that "the temporary protective device for bridge construction includes: a bridge and multiple guardrails; multiple sets of steel reinforcement assemblies are reserved on the bridge, each set of steel reinforcement assemblies includes a first steel bar and a second steel bar arranged opposite to each other, and multiple guardrails are arranged between the first steel bar and the second steel bar, with adjacent guardrails being detachably connected; wherein, along the width direction of the bridge, a first connector and a second connector are respectively provided on both sides of the guardrail; one end of the first connector is connected to the guardrail and the other end is used for detachable connection with the first steel bar, and one end of the second connector is connected to the guardrail and the other end is used for detachable connection with the second steel bar, which is convenient for disassembly and installation and simple to use."

[0004] The aforementioned patent requires two opposing first and second reinforcing bars on the bridge for the connection between the two sides of the guardrail. If there is only one first or second reinforcing bar on the bridge, the position of the guardrail cannot be guaranteed to be stable and it is not easy to move. Furthermore, the guardrail is a whole, which makes it inconvenient to recycle it later.

[0005] The temporary guardrail is a temporary requirement and will need to be removed later. Therefore, in addition to ensuring the structural integrity of the temporary guardrail, it is also necessary to consider whether it is easy to dismantle. Utility Model Content

[0006] To address the problem of poor positional stability of existing temporary bridge railings, this utility model provides a bridge edge railing, comprising:

[0007] Bridges, connecting components, embedded steel bars, and guardrail components;

[0008] The connecting assembly includes a first connecting shaft having a curved section;

[0009] The pre-embedded steel bar is fixed to the bridge. One end of the first connecting shaft with the curved section is connected to the pre-embedded steel bar, and the other end of the first connecting shaft is connected to the guardrail assembly. This forms a state in which the first connecting shaft hooks the pre-embedded steel bar between the first connecting shaft and the guardrail assembly through the curved section. One side of the pre-embedded steel bar abuts against the guardrail assembly, and the other side of the pre-embedded steel bar abuts against the first connecting shaft. The first connecting shaft and the pre-embedded steel bar cooperate to position the guardrail assembly.

[0010] According to one embodiment of the present invention, the surface of the first connecting shaft that contacts the pre-embedded reinforcing bar is provided with a mating surface, and the mating surface mates with the surface of the pre-embedded reinforcing bar to position the first connecting shaft.

[0011] When the surface of the pre-embedded steel bar that contacts the first connecting shaft is a raised surface, the mating surface is a grooved surface;

[0012] When the surface of the pre-embedded steel bar that contacts the first connecting shaft is a groove, the mating surface is a raised surface.

[0013] According to one embodiment of the present invention, the surface of the pre-embedded steel bar that contacts the first connecting shaft is a spiral raised surface, and the mating surface is a spiral groove surface;

[0014] Alternatively, the surface of the pre-embedded steel bar that contacts the first connecting shaft is a spiral groove surface, and the mating surface is a spiral protrusion surface.

[0015] According to one embodiment of the present invention, the length of the straight line connecting the bending start point to the bending end point of the bending segment is equal to or greater than the diameter of the pre-embedded steel bar, wherein the length of the straight line is less than a preset length.

[0016] According to one embodiment of the present invention, the guardrail assembly includes vertical bars and horizontal bars;

[0017] The vertical bar is provided with a connecting sleeve, and the horizontal bar is connected to the vertical bar through the connecting sleeve. At least two vertical bars and one horizontal bar constitute the guardrail assembly.

[0018] One of the vertical rods is connected to one of the pre-embedded steel bars via the first connecting shaft.

[0019] According to one embodiment of the present invention, the pre-embedded steel bar is in contact with the first side of the vertical rod, one end of the bent section is in contact with the second side of the vertical rod, and the first side and the second side are adjacent to each other.

[0020] According to one embodiment of the present invention, the side of the vertical rod is provided with a first groove portion that contacts the pre-embedded steel bar;

[0021] Alternatively, the vertical rod may be provided with a positioning plate, and the positioning plate may be provided with a first groove portion that contacts the reinforcing bar.

[0022] According to one embodiment of the present invention, the side of the vertical rod is provided with a second groove that contacts one end of the curved section.

[0023] According to one embodiment of the present invention, the guardrail assembly includes a baffle and a second connecting shaft. The baffle is located on the third side of the vertical rod and is located at one end of the vertical rod near the bridge. The third side is adjacent to the second side and opposite to the pre-embedded steel bar. The second connecting shaft is L-shaped. One end of the second connecting shaft is connected to the vertical rod, and the other end of the second connecting shaft abuts against the baffle. The first connecting shaft passes through the baffle and the vertical rod in sequence and is connected to the pre-embedded steel bar.

[0024] According to one embodiment of the present invention, the first connecting shaft is a J-bolt.

[0025] To address the problem of poor positional stability of existing temporary bridge railings, this utility model has the following advantages:

[0026] In this invention, after one end of the first connecting shaft is connected to the guardrail assembly, the bent section of the first connecting shaft hooks onto the pre-embedded reinforcing bar, thus positioning the guardrail assembly closer to the pre-embedded reinforcing bar and fixing the guardrail assembly to the pre-embedded reinforcing bar. The guardrail assembly is thus fixed to the bridge position near the pre-embedded reinforcing bar via the first connecting shaft. The pre-embedded reinforcing bar abuts against both sides of the first connecting shaft and the guardrail assembly, ensuring the reliability of the guardrail assembly being fixed to the pre-embedded reinforcing bar via the first connecting shaft. This method of fixing the guardrail assembly to the pre-embedded reinforcing bar via the first connecting shaft facilitates installation of the guardrail assembly, and since the guardrail assembly does not need to be pre-embedded in the bridge, it is easy to remove the guardrail assembly from the pre-embedded reinforcing bar later. Attached Figure Description

[0027] Figure 1 A partial structural schematic diagram of a bridge edge guardrail according to one embodiment is shown;

[0028] Figure 2 It shows Figure 1 A schematic diagram of the structure of part A in the diagram;

[0029] Figure 3 A schematic diagram of a connection component structure according to one embodiment is shown;

[0030] Figure 4 A schematic diagram of the structure of a bridge edge guardrail according to one embodiment is shown.

[0031] Reference numerals: 10-Bridge; 20-Connecting assembly; 21-First connecting shaft; 22-Bent section; 30-Embedded reinforcing bar; 40-Guardrail assembly; 41-Vertical bar; 42-Horizontal bar; 43-Connecting sleeve; 44-Tightening bolt; 45-Baffle; 46-Second connecting shaft. Detailed Implementation

[0032] The present disclosure will now be discussed with reference to several exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and thus implement the present disclosure, and are not intended to imply any limitation on the scope of the disclosure.

[0033] As used herein, the term "comprising" and its variations are to be interpreted as open-ended terms meaning "including but not limited to". The term "based on" is to be interpreted as "at least partially based on". The terms "one embodiment" and "an embodiment" are to be interpreted as "at least one embodiment". The term "another embodiment" is to be interpreted as "at least one other embodiment". The terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "vertical", "horizontal", "lateral", "longitudinal", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments and are not intended to limit the indicated devices, elements, or components to having a specific orientation or being constructed and operated in a specific orientation. Furthermore, some of the above terms may be used to indicate other meanings besides orientations or positional relationships; for example, the term "upper" may in some cases indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application according to the specific circumstances. In addition, the terms "installed", "set up", "equipped with", "connected", and "linked" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, elements, or components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. Furthermore, the terms "first," "second," etc., are mainly used to distinguish different devices, elements, or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0034] Specifically, this embodiment provides a bridge edge guardrail, such as... Figure 1-4 As shown, it includes:

[0035] Bridge 10, connecting component 20, embedded steel bar 30, and guardrail component 40;

[0036] The connecting assembly 20 includes a first connecting shaft 21 having a curved section 22;

[0037] The embedded steel bar 30 is fixed to the bridge 10. One end of the first connecting shaft 21 with the bent section 22 is connected to the embedded steel bar 30, and the other end of the first connecting shaft 21 is connected to the guardrail assembly 40. This forms a state in which the first connecting shaft 21 hooks the embedded steel bar 30 between the first connecting shaft 21 and the guardrail assembly 40 through the bent section 22. One side of the embedded steel bar 30 abuts against the guardrail assembly 40, and the other side of the embedded steel bar 30 abuts against the first connecting shaft 21. The first connecting shaft 21 and the embedded steel bar 30 cooperate to position the guardrail assembly 40.

[0038] In this embodiment, the guardrail assembly 40 is moved to a position close to the embedded steel bar 30, so that the guardrail assembly 40 abuts against one side of the embedded steel bar 30. The first connecting shaft 21 is then connected to the guardrail assembly 40. Specifically, one first connecting shaft 21 is threadedly connected to one part of the guardrail assembly 40. During the threaded connection between the first connecting shaft 21 and the guardrail assembly 40, one end of the first connecting shaft 21 with the bent section 22 approaches the thread until the bent section 22 abuts against the embedded steel bar 30. At this point, the first connecting shaft 21 stops its threaded connection with the guardrail assembly 40, thus creating the effect of one first connecting shaft 21 hooking one embedded steel bar 30. The first connecting shaft 21, the embedded steel bar 30, and the guardrail assembly 40 are in a state where both sides of the embedded steel bar 30 abut against the bent section 22 of the first connecting shaft 21 and the guardrail assembly 40, respectively.

[0039] In this embodiment, the pre-embedded steel bar 30 is a steel bar pre-reserved in the bridge body 10. The pre-embedded steel bar 30 on the bridge 10 is the pre-embedded steel bar 30 used for the later construction of permanent guardrails. Part of the pre-embedded steel bar 30 is buried in the bridge 10, and the other part of the pre-embedded steel bar 30 is exposed in the bridge 10. In this embodiment, by using the existing pre-embedded steel bar 30, it is not necessary to build a new device for connecting the guardrail assembly 40. After one end of the first connecting shaft 21 is connected to the guardrail assembly 40, the bent section 22 of the first connecting shaft 21 hooks the pre-embedded steel bar 30, so that the first connecting shaft 21 moves the guardrail assembly 40 toward the position close to the pre-embedded steel bar 30, and fixes the guardrail assembly 40 and the pre-embedded steel bar 30 together. Thus, the guardrail assembly 40 can be fixed to the position of the bridge 10 close to the pre-embedded steel bar 30 by the pre-embedded steel bar 30. The two sides of the pre-embedded steel bar 30 abut against the first connecting shaft 21 and the guardrail assembly 40 respectively, ensuring the reliability of the guardrail assembly 40 being fixed to the pre-embedded steel bar 30 by the first connecting shaft 21. The guardrail assembly 40 is fixed to the pre-embedded part via the first connecting shaft 21, which facilitates the installation of the guardrail assembly 40. At the same time, the guardrail assembly 40 does not need to be pre-embedded in the bridge 10, that is, the guardrail assembly 40 and the bridge 10 are independent entities, which makes it easy to remove the guardrail assembly 40 from the pre-embedded steel bar 30 later.

[0040] Preferably, the curved section 22 of the first connecting shaft 21 is U-shaped to ensure the reliability of the connecting shaft hooking the pre-embedded steel bar 30 through the curved section 22.

[0041] According to one embodiment of the present invention, the surface of the first connecting shaft 21 that contacts the pre-embedded steel bar 30 is provided with a mating surface, and the mating surface and the surface of the pre-embedded steel bar 30 are mated to position the first connecting shaft 21.

[0042] When the surface of the pre-embedded steel bar 30 that contacts the first connecting shaft 21 is a raised surface, the mating surface is a grooved surface;

[0043] When the surface of the pre-embedded steel bar 30 that contacts the first connecting shaft 21 is a grooved surface, the mating surface is a raised surface.

[0044] In this embodiment, by setting the surfaces of the pre-embedded steel bar 30 and the first connecting shaft 21 that come into contact with each other in a manner that combines protrusions and grooves, the relative sliding between the first connecting shaft 21 and the pre-embedded steel bar 30 is reduced, thereby further increasing the reliability of the connection between the guardrail assembly 40 and the pre-embedded assembly through the first connecting shaft 21.

[0045] According to one embodiment of the present invention, the surface of the pre-embedded steel bar 30 that contacts the first connecting shaft 21 is a spiral raised surface, and the mating surface is a spiral groove surface;

[0046] Alternatively, the surface of the pre-embedded steel bar 30 that contacts the first connecting shaft 21 is a spiral groove surface, and the mating surface is a spiral protrusion surface.

[0047] In this embodiment, by setting the surfaces of the pre-embedded steel bar 30 and the first connecting shaft 21 that come into contact with each other in a spiral protrusion and spiral groove manner, the relative sliding between the first connecting shaft 21 and the pre-embedded steel bar 30 is further prevented.

[0048] According to one embodiment of the present invention, the length of the straight line connecting the bending start point to the bending end point of the bending segment 22 is equal to or greater than the diameter of the pre-embedded steel bar 30, wherein the length of the straight line is less than the preset length.

[0049] In this embodiment, the starting point of the bending segment 22 is the part where the bending segment 22 begins to fully bend, and the ending point of the bending segment 22 is the part where the bending ends. By ensuring that the length of the straight line connecting the starting point and the ending point of the bending is equal to or greater than the diameter of the embedded steel bar 30, the first connecting shaft 21 hooks the embedded steel bar 30 through the bending segment 22. By ensuring that the length of the straight line connecting the starting point and the ending point of the bending is less than a preset length, it ensures that the first connecting shaft 21 hooks the embedded steel bar 30 while preventing the bending arc of the bending segment 22 from exceeding its limit, thus reducing the effectiveness of the first connecting shaft 21 in hooking the embedded steel bar 30. This also facilitates the removal of the first connecting shaft 21 from the embedded steel bar 30.

[0050] Preferably, the preset length is less than the diameter of the embedded steel bar 30 + 1 mm to ensure the reliability of the first connecting shaft 21 hooking the embedded steel bar 30 through the bent section 22.

[0051] Preferably, the length of the straight line connecting the starting point and the ending point of the bend in the bent section 22 is equal to the diameter of the embedded steel bar 30. This further ensures the reliability of the first connecting shaft 21 in hooking the embedded steel bar 30.

[0052] According to one embodiment of the present invention, such as Figure 1 , 2 and Figure 4 As shown, the guardrail assembly 40 includes a vertical bar 41 and a horizontal bar 42;

[0053] The vertical rod 41 is provided with a connecting sleeve 43, and the horizontal rod 42 is connected to the vertical rod 41 through the connecting sleeve 43. At least two vertical rods 41 and one horizontal rod 42 constitute the guardrail assembly 40.

[0054] One of the vertical rods 41 is connected to one of the pre-embedded steel bars 30 through the first connecting shaft 21.

[0055] In this embodiment, multiple vertical bars 41 and multiple horizontal bars 42 are connected to form a guardrail assembly 40 that functions as a protective barrier. Each vertical bar 41 is connected to a pre-embedded steel bar 30 via a first connecting shaft 21. There are two ways to connect the guardrail assembly 40 in this embodiment. The first way is to connect multiple vertical bars 41 to the pre-embedded steel bars 30 via the first connecting shaft 21, and then pass the horizontal bars 42 through the connecting sleeves 43 on the vertical bars 41. The second way is to pass the horizontal bars 42 through the connecting sleeves 43 on the vertical bars 41, and then adaptively adjust the spacing between adjacent vertical bars 41 according to the spacing between the multiple pre-embedded steel bars 30, ensuring that each vertical bar 41 is connected to one pre-embedded steel bar 30. The first connection method is preferred because it avoids moving the spacing between adjacent vertical bars 41, facilitating installation and increasing work efficiency. The method of connecting the vertical bars 41 and horizontal bars 42 to form the guardrail assembly 40 also makes it easy to recycle the vertical bars 41 and horizontal bars 42 after disassembly.

[0056] Preferably, the first connecting shaft 21 is threadedly connected to the vertical rod 41, which facilitates assembly and disassembly while ensuring the reliability of the structural connection.

[0057] In some embodiments, the connecting sleeve 43 is threaded with a tightening bolt 44. After the crossbar 42 passes through the connecting sleeve 43, the tightening bolt 44 is screwed on, and the tightening bolt 44 abuts against the crossbar 42, so that the crossbar 42 is fixed to the vertical bar 41 through the connecting sleeve 43.

[0058] According to one embodiment of the present invention, such as Figure 1 and Figure 2 As shown, the pre-embedded steel bar 30 is in contact with the first side of the vertical rod 41, and one end of the bent section 22 is in contact with the second side of the vertical rod 41. The first side and the second side are adjacent to each other.

[0059] In this embodiment, by having the pre-embedded steel bar 30 contact the first side of the vertical rod 41 and one end of the bent section 22 contact the second side of the vertical rod 41, the first connecting shaft 21 and the vertical rod 41 form a closed structure that circumferentially fixes the pre-embedded steel bar 30, thus preventing the first connecting shaft 21 from shifting relative to the pre-embedded steel bar 30, which would cause the guardrail assembly 40 to shift relative to the moving steel bar along with the first connecting shaft 21.

[0060] According to one embodiment of the present invention, the side of the vertical rod 41 is provided with a first groove portion that contacts the pre-embedded steel bar 30;

[0061] Alternatively, the vertical rod 41 may be provided with a positioning plate, and the positioning plate may be provided with a first groove portion that contacts the reinforcing bar.

[0062] In this embodiment, the first groove allows the embedded reinforcing bar 30 to contact the vertical rod 41. The first groove prevents the vertical rod 41 from shifting position relative to the embedded reinforcing bar 30. By providing a positioning plate on the vertical rod 41 and then providing the first groove on the positioning plate, the supporting performance of the vertical rod 41 is guaranteed while ensuring that the first groove prevents the vertical rod 41 from shifting position relative to the embedded reinforcing bar 30. If the first groove were directly provided on the vertical rod 41, it might reduce the supporting performance of the vertical rod 41. Preferably, the vertical rod 41 is provided with a positioning plate, and the positioning plate is provided with a first groove that contacts the reinforcing bar.

[0063] Preferably, the structure of the first groove is adapted to the shape of the pre-embedded steel bar 30, thereby improving the reliability of the structure.

[0064] According to one embodiment of the present invention, the side of the vertical rod 41 is provided with a second groove that contacts one end of the curved section 22.

[0065] In this embodiment, by providing a second groove on the side of the vertical rod 41, the first connecting shaft 21 and the vertical rod 41 cooperate to form a closed space for fixing the embedded steel bar 30, thereby improving the stability of the structure.

[0066] According to one embodiment of the present invention, such as Figure 1 , 2 and Figure 4 As shown, the guardrail assembly 40 includes a baffle 45 and a second connecting shaft 46. The baffle 45 is located on the third side of the vertical rod 41, and the baffle 45 is located at one end of the vertical rod 41 near the bridge 10. The third side is adjacent to the second side and opposite to the embedded steel bar 30. The second connecting shaft 46 is L-shaped. One end of the second connecting shaft 46 is connected to the vertical rod 41, and the other end of the second connecting shaft 46 abuts against the baffle 45. The first connecting shaft 21 passes through the baffle 45 and the vertical rod 41 in sequence and is connected to the embedded steel bar 30.

[0067] In this embodiment, the baffle 45 increases the stability of the connection between the first connecting shaft 21 and the vertical rod 41. The baffle 45 is fixed to the vertical rod 41 via the second connecting shaft 46, further increasing the stability of the structure and facilitating its disassembly later. Furthermore, the baffle 45 prevents objects from falling from the bridge 10 and the guardrail assembly 40.

[0068] Preferably, the second connecting shaft 46 is threadedly connected to the vertical rod 41, which facilitates the disassembly of the structure later.

[0069] In some embodiments, the height of the baffle 45 is lower than the maximum height of the embedded steel bar 30 to avoid the baffle 45 affecting the connection between the first connecting shaft 21 and the upright 41, so that the first connecting shaft 21 can easily pass through the upright 41 and hook the embedded steel bar 30.

[0070] According to one embodiment of the present invention, such as Figure 1-3 As shown, the first connecting shaft 21 is a J-bolt.

[0071] In this embodiment, by setting the first connecting shaft 21 as a J-bolt, one end of the first connecting shaft 21 hooks the pre-embedded steel bar 30, and the other end of the first connecting shaft 21 is connected to the vertical rod 41 and fixed by a nut, so that the first connecting shaft 21 can hook the pre-embedded steel bar 30 and connect with the guardrail assembly 40.

[0072] Those skilled in the art will understand that the above embodiments are specific examples of implementing this disclosure, and in practical applications, various changes can be made in form and detail without departing from the scope of this disclosure.

Claims

1. A bridge edge guardrail, characterized in that, include: Bridges, connecting components, embedded steel bars, and guardrail components; The connecting assembly includes a first connecting shaft having a curved section; The pre-embedded reinforcing steel is fixed to the bridge. One end of the first connecting shaft with the curved section is connected to the pre-embedded reinforcing steel, and the other end of the first connecting shaft is connected to the guardrail assembly. This forms a state where the first connecting shaft hooks the pre-embedded reinforcing steel between the first connecting shaft and the guardrail assembly through the curved section. One side of the pre-embedded reinforcing steel abuts against the guardrail assembly, and the other side of the pre-embedded reinforcing steel abuts against the first connecting shaft. The first connecting shaft and the pre-embedded reinforcing steel cooperate to position the guardrail assembly.

2. A bridge edge guardrail according to claim 1, characterized in that, The surface of the first connecting shaft that contacts the embedded steel bar is provided with a mating surface, and the mating surface mates with the surface of the embedded steel bar to position the first connecting shaft. When the surface of the pre-embedded steel bar that contacts the first connecting shaft is a raised surface, the mating surface is a grooved surface; When the surface of the pre-embedded steel bar that contacts the first connecting shaft is a groove, the mating surface is a raised surface.

3. A bridge edge guardrail according to claim 2, characterized in that, The surface of the pre-embedded steel bar that contacts the first connecting shaft is a spiral raised surface, and the mating surface is a spiral groove surface; Alternatively, the surface of the pre-embedded steel bar that contacts the first connecting shaft is a spiral groove surface, and the mating surface is a spiral protrusion surface.

4. A bridge edge guardrail according to claim 1, characterized in that, The length of the straight line connecting the starting point and the ending point of the bending segment is equal to or greater than the diameter of the embedded steel bar, wherein the length of the straight line is less than the preset length.

5. A bridge edge guardrail according to claim 1, characterized in that, The guardrail assembly includes vertical bars and horizontal bars; The vertical bar is provided with a connecting sleeve, and the horizontal bar is connected to the vertical bar through the connecting sleeve. At least two vertical bars and one horizontal bar constitute the guardrail assembly. One of the vertical rods is connected to one of the pre-embedded steel bars via the first connecting shaft.

6. A bridge edge guardrail according to claim 5, characterized in that, The embedded steel bar is in contact with the first side of the vertical rod, and one end of the bent section is in contact with the second side of the vertical rod. The first side and the second side are adjacent to each other.

7. A bridge edge guardrail according to claim 6, characterized in that, The side of the vertical rod is provided with a first groove that contacts the pre-embedded steel bar; Alternatively, the vertical rod may be provided with a positioning plate, and the positioning plate may be provided with a first groove portion that contacts the reinforcing bar.

8. A bridge edge guardrail according to claim 6, characterized in that, The side of the vertical rod is provided with a second groove that contacts one end of the curved section.

9. A bridge edge guardrail according to claim 6, characterized in that, The guardrail assembly includes a baffle and a second connecting shaft. The baffle is located on the third side of the vertical rod and is located at one end of the vertical rod near the bridge. The third side is adjacent to the second side and opposite to the pre-embedded steel bar. The second connecting shaft is L-shaped. One end of the second connecting shaft is connected to the vertical rod, and the other end of the second connecting shaft abuts against the baffle. The first connecting shaft passes through the baffle and the vertical rod in sequence and is connected to the pre-embedded steel bar.

10. A bridge edge guardrail according to claim 1, characterized in that, The first connecting shaft is a J-bolt.

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