Bridge guardrail bridgehead transition structure

Abstract

The utility model relates to the technical field of bridge guardrails, and discloses a bridge guardrail bridgehead transition structure which comprises a transition plate, one end of the transition plate is connected with a roadbed section wave-shaped guardrail plate, and the other end of the transition plate is connected with a metal beam column type bridge guardrail lower cross beam. The buffer connecting assembly is arranged on the rear side of the transition plate, one end of the buffer connecting assembly is connected with the bridge guardrail lower cross beam, and the other end of the buffer connecting assembly is connected with the roadbed section wave-shaped guardrail plate; through the arrangement of the transition plate and the buffer connecting assembly, the wave-shaped guardrail plate, the transition plate, the buffer connecting assembly and the cross beam can be connected to form a transition structure with buffer and protection effects; the anti-deformation effect of the transition plate and the buffer connecting assembly is used for carrying out buffer protection on the connecting position of the roadbed section wave-shaped guardrail plate and the bridge guardrail; the connecting structure has the advantages of simple structure, convenience in mounting, good buffering and energy absorbing effects and the like, and solves the problems of poor toughness and difficulty in later maintenance and replacement of the connecting structure in the prior art.

Description

Technical Field

[0001] The utility model belongs to the technical field of bridge guardrails, and in particular relates to a bridge guardrail bridgehead transition structure. Background Art

[0002] Bridge guardrails refer to guardrails installed on bridges. Their purpose is to prevent out-of-control vehicles from going over the bridge. They have the functions of preventing vehicles from breaking through, passing under, or climbing over the bridge and beautifying the bridge structure. As an important guardrail structure, corrugated guardrails are mainly used in roadbed guardrails. They have good collision resistance, energy absorption and protection.

[0003] During the construction of the bridge guardrail at the bridgehead, it is often necessary to connect the bridge guardrail with the highway guardrail to make the guardrail structure continuous, thereby ensuring the driving safety of vehicles at the connection between the bridge and the highway. However, due to the limitations of the construction design, on-site construction environment and construction requirements, the width of the bridge cannot be guaranteed to be consistent with the width of the highway. Therefore, when connecting the bridge guardrail with the highway guardrail, there is a connection transition zone. In the connection transition zone, due to the different structures or elevations of the bridge guardrail and the highway guardrail, a connection transition structure is often required to achieve a smooth transition at the connection between the bridge guardrail and the highway guardrail. At present, in the construction process, welding connection is generally used to connect the bridge guardrail and the highway guardrail in the transition zone using a connection transition structure. However, since the welding connection method is a rigid connection, the structural brittleness of the transition zone after the connection increases, the toughness is insufficient, and it cannot absorb energy and isolate well after being hit, which poses obvious safety hazards; and after damage, later maintenance and replacement are more difficult, which increases the maintenance cost and the maintenance work is complicated and time-consuming.

[0004] Therefore, in response to the above problems, the utility model proposes a new type of bridge guardrail bridgehead transition structure to achieve mechanical connection between the bridge guardrail and the highway guardrail, increase the toughness of the transition zone connection structure, and solve the problems existing in the above-mentioned prior art. Utility Model Content

[0005] 1. Technical issues to be solved

[0006] In view of the shortcomings of the existing technology, the utility model provides a bridge guardrail bridgehead transition structure, which has the advantages of simple structure, easy installation, structural toughness and good buffering and energy absorption effect, and solves the problems of poor toughness of the connection structure and difficulty in subsequent maintenance and replacement in the existing technology.

[0007] (II) Technical solution

[0008] In order to achieve the above-mentioned purpose of facilitating installation and maintenance, and enhancing the connection toughness and energy absorption effect of the connection between the bridge guardrail and the highway guardrail, the utility model provides the following technical solutions:

[0009] A bridge guardrail bridgehead transition structure, comprising

[0010] The transition plate is a transition steel plate provided between the bridge guardrail and the highway guardrail, and one end of the transition plate is connected to the corrugated guardrail plate of the roadbed section provided on the bridge guardrail or the highway guardrail, and the other end is connected to the crossbeam provided on the bridge guardrail or the highway guardrail;

[0011] The buffer connection component is arranged at the rear side of the transition plate, and one end of the buffer connection component is connected to the crossbeam, and the other end is connected to the corrugated guardrail plate.

[0012] In a preferred embodiment, the transition plate is arranged on the front side of the corrugated guardrail plate and the crossbeam, and includes a front guard plate, and side guard plates are symmetrically arranged on the upper and lower sides of the front guard plate.

[0013] In a preferred embodiment, the side guard plates are bent inwardly along the height direction of the front guard plate and match the corrugated guardrail plates and cross beams.

[0014] In a preferred embodiment, the left and right ends of the front guard plate are respectively provided with

[0015] A first guide plate is arranged on one end of the front guard plate close to the corrugated guardrail plate and matches the corrugated groove on the front side of the corrugated guardrail plate;

[0016] The second guide plate is arranged on one end of the front guard plate close to the cross beam and matches the gap between two adjacent cross beams.

[0017] In a preferred embodiment, a plurality of limit plates are further provided on the inner side surface of the front guard plate, and a slot matching the buffer connection assembly is formed between the limit plates and the side guard plates.

[0018] In a preferred embodiment, a guide plate is further provided on the inner side of the front guard plate, and the guide plate is arranged at the end of the slot of the front guard plate close to one end of the corrugated guardrail plate, and a through hole is provided on the guide plate.

[0019] In a preferred embodiment, the buffer connection assembly includes

[0020] The transition connecting rod is a steel pipe structure matching the transition plate;

[0021] The end connecting rod of the corrugated guardrail plate is arranged at one end of the transition connecting rod close to the corrugated guardrail plate and matches with the through-hole on the guide plate and the corrugated groove on the rear side of the corrugated guardrail plate;

[0022] The crossbeam end connecting rod is arranged at one end of the transition connecting rod close to the crossbeam and matches the middle cavity of the crossbeam.

[0023] In a preferred embodiment, the transition areas of the bent pipes at both ends of the ferry connecting rod are provided with clearance grooves, and the clearance grooves match the connecting rods at the ends of the corrugated guardrail plates and the connecting rods at the ends of the beams.

[0024] In a preferred embodiment, a middle connection area sleeve is further provided between the two end recesses of the ferry link, and the middle connection area sleeve is matched with the fixed end portions of the corrugated guardrail end link and the crossbeam end link respectively.

[0025] In a preferred embodiment, one end of the transition plate is fixedly connected to the corrugated guardrail plate, and the other end is movably connected to the crossbeam; one end of the buffer connection assembly is fixedly connected to the crossbeam, and the other end is movably connected to the corrugated guardrail plate.

[0026] (III) Beneficial effects

[0027] Compared with the prior art, the utility model provides a bridge guardrail bridgehead transition structure, which has the following beneficial effects:

[0028] 1. Through the arrangement of the transition plate and the buffer connection assembly, the transition plate is installed on the front side of the corrugated guardrail plate and the crossbeam during use, and the buffer connection assembly is connected to the corrugated guardrail plate and the crossbeam respectively, so as to form a bridge guardrail bridgehead transition structure with buffering and protective effects. When the connection between the corrugated guardrail plate and the crossbeam is subjected to external impact, the anti-deformation effect of the transition plate and the buffer connection assembly is used to buffer and protect the connection between the corrugated guardrail plate and the crossbeam, so as to realize the mechanical connection of the connection structure, effectively ensure the toughness and buffering energy absorption effect of the structure, and ensure the protection of vehicles and drivers and passengers;

[0029] 2. Through the setting of the transition plate, a smooth transition can be achieved between the bridge guardrails and highway guardrails of different structures or elevations, and the integrity of the structure can be ensured, thereby enhancing the structural strength of the connection between the corrugated guardrail plate and the beam;

[0030] 3. Through the setting of the buffer connection assembly, the corrugated guardrail plate, transition plate, buffer connection assembly and crossbeam can be connected to form a whole, so as to protect the middle connection between the bridge guardrail and the highway guardrail; at the same time, through the setting of the transition connecting rod, the corrugated guardrail plate end connecting rod and the crossbeam end connecting rod structure, a supporting structure that can play a buffering role is formed, and it is easy to disassemble and maintain; the purpose of facilitating installation and maintenance and enhancing the connection toughness and energy absorption effect of the connection between the bridge guardrail and the highway guardrail is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a structural schematic diagram of the bridge head transition structure of the bridge guardrail of the utility model;

[0032] Figure 2 This is a schematic diagram of the structure of the transition plate of the utility model;

[0033] Figure 3 This is an exploded view of the bridge head transition structure of the bridge guardrail of the utility model;

[0034] Figure 4 This is an exploded view of the buffer connection assembly of the utility model;

[0035] Figure 5 It is a structural schematic diagram of the transition connecting rod of the utility model from a rearward perspective.

[0036] In the figure: 1. corrugated guardrail plate; 2. transition plate; 21. front guard plate; 22. side guard plate; 23. first guide plate; 24. second guide plate; 25. limit plate; 26. guide plate; 3. buffer connection assembly; 31. transition connecting rod; 311. clearance slot; 32. corrugated guardrail plate end connecting rod; 33. crossbeam end connecting rod; 4. crossbeam. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0038] See also Figure 1-5 , the utility model provides a technical solution:

[0039] A bridge guardrail bridgehead transition structure is arranged between the bridge guardrail and the highway guardrail, comprising a transition plate 2 and a buffer connection component 3;

[0040] The transition plate 2 is a transition steel plate, and one end of the transition plate 2 is detachably connected to the roadbed section corrugated guardrail plate 1 set on the bridge guardrail or highway guardrail, and the other end is movably connected to the lower crossbeam 4 set on the bridge guardrail or highway guardrail (metal beam-column bridge guardrail);

[0041] The buffer connection component 3 is arranged at the rear side of the transition plate 2, and one end of the buffer connection component 3 is fixedly connected to the lower cross beam 4 of the bridge guardrail, and the other end is movably connected to the corrugated guardrail plate 1 of the roadbed section to form a transition buffer structure;

[0042] In this embodiment, by setting the transition plate 2, the corrugated guardrail plate 1 and the crossbeam 4 on the adjacent bridge guardrail and highway guardrail are connected, thereby achieving a smooth transition of the transition zone between the bridge guardrail and the highway guardrail of different widths or elevations, and at the same time, it can play a role in connecting and protecting the ends of the corrugated guardrail plate 1 and the crossbeam 4; by setting the buffer connection assembly 3, the corrugated guardrail plate 1, the transition plate 2, the buffer connection assembly 3 and the crossbeam 4 can be connected to form a whole, thereby protecting the middle connection between the bridge guardrail and the highway guardrail.

[0043] As a preferred embodiment, Figure 2 and Figure 3 As shown, the transition plate 2 is installed on the front side of the corrugated guardrail plate 1 and the crossbeam 4, and includes a front guard plate 21, and the upper and lower sides of the front guard plate 21 are symmetrically provided with inwardly curved side guard plates 22, and the curvature of the side guard plates 22 is greater than the cross-sectional width of the corrugated guardrail plate 1 and the crossbeam 4;

[0044] In this embodiment, by providing the side guard plates 22, the edges of the corrugated guardrail plates 1 and the cross beams 4 can be covered, thereby improving the integrity of the entire telescopic structure.

[0045] As a preferred embodiment, Figure 2 and Figure 3 As shown, the left and right ends of the front guard plate 21 are respectively provided with a first guide plate 23 and a second guide plate 24; the first guide plate 23 is arranged on one end of the front guard plate 21 close to the corrugated guardrail plate 1, and is used in conjunction with the corrugated groove on the front side of the corrugated guardrail plate 1; the second guide plate 24 is arranged on one end of the front guard plate 21 close to the crossbeam 4, and is used in conjunction with the gap between two adjacent crossbeams 4;

[0046] In this embodiment, by setting the first guide plate 23, it can be stuck in the corrugated groove on the front side of the corrugated guardrail plate 1 after installation, which can guide the movement of the front guard plate 21 on the front guard plate 21 and also have a waterproof effect; by setting the second guide plate 24, it can be stuck in the gap between two adjacent beams 4 during installation to fill the gap, which can play a guiding role and enhance the connection strength between the two adjacent beams 4.

[0047] As a preferred embodiment, Figure 2 and Figure 3 As shown, a plurality of limit plates 25 and guide plates 26 are further provided on the inner side surface of the front guard plate 21; the limit plates 25 are used in conjunction with the side guard plates 22, and a slot for clamping the buffer connection component 3 is formed between the limit plates 25 and the side guard plates 22 to clamp and limit the buffer connection component 3; the guide plate 26 is provided at the end of the slot of the front guard plate 21 close to one end of the corrugated guardrail plate 1, and a through hole is provided on the guide plate 26 for use in conjunction with the buffer connection component 3;

[0048] In this embodiment, by setting the limit plate 25, the buffer connection assembly 3 can be limited during use, and the buffer connection assembly 3 can be guided during installation, and the position of the buffer connection assembly 3 can be limited after installation; by setting the guide plate 26, it can not only limit the end of the corrugated guardrail plate 1 during installation, but also guide the buffer connection assembly 3, so that the end of the buffer connection assembly 3 is inserted into the corrugated groove on the rear side of the corrugated guardrail plate 1, so as to strengthen the protection and limiting effect on the end of the corrugated guardrail plate 1 after connection.

[0049] As a preferred embodiment, Figure 3 , Figure 4 and Figure 5 As shown, the buffer connection assembly 3 includes a transition link 31, a corrugated guardrail plate end link 32 and a beam end link 33 arranged at both ends of the transition link 31;

[0050] The transition connecting rod 31 is an irregular steel pipe structure matching the shape of the transition plate 2;

[0051] The corrugated guardrail plate end connecting rod 32 is arranged at one end of the transition connecting rod 31 close to the corrugated guardrail plate 1, and is used in conjunction with the through-hole arranged on the guide plate 26 and the corrugated groove on the rear side of the corrugated guardrail plate 1;

[0052] The crossbeam end connecting rod 33 is arranged at one end of the transition connecting rod 31 close to the crossbeam 4 and cooperates with the middle cavity of the crossbeam 4;

[0053] In this embodiment, by setting the transition link 31, the corrugated guardrail plate end link 32 and the crossbeam end link 33 can be effectively connected to form an integral structure that can play a buffering role; by setting the corrugated guardrail plate end link 32, it can pass through the through-hole on the guide plate 26 and the corrugated groove on the rear side of the corrugated guardrail plate 1 in sequence to achieve the connection and buffering protection of the transition plate 2 of the corrugated guardrail plate 1; by setting the crossbeam end link 33, it passes through the middle cavity of the crossbeam 4 to achieve the connection between the transition plate 2 and the crossbeam 4 to form an integral structure, and utilizes the buffering effect of the buffer connection assembly 3 to protect the connection between the corrugated guardrail plate 1 and the crossbeam 4 to ensure the safety of the vehicle and the driver.

[0054] As a preferred embodiment, Figure 3 , Figure 4 and Figure 5As shown, the corrugated guardrail plate end connecting rod 32 and the crossbeam end connecting rod 33 are both detachably connected to the transition connecting rod 31, and a clearance slot 311 is provided in the bend transition area of ​​the transition connecting rod 31 to cooperate with the corrugated guardrail plate end connecting rod 32 and the crossbeam end connecting rod 33, and the fixed ends of the corrugated guardrail plate end connecting rod 32 and the crossbeam end connecting rod 33 are inserted into the sleeve of the middle connecting area of ​​the transition connecting rod 31 to realize the connection between the transition connecting rod 31 and the corrugated guardrail plate end connecting rod 32 and the crossbeam end connecting rod 33;

[0055] In this embodiment, when in use, the corrugated guardrail end connecting rod 32 and the beam end connecting rod 33 are respectively inserted into the clearance groove 311, and their ends are inserted into the sleeve of the middle connecting area of ​​the transition connecting rod 31, and connected by a connecting bolt to form a complete buffer connection assembly 3, which can be easily disassembled and replaced when in use.

[0056] The construction process of the bridge head transition structure using the new type of bridge guardrail includes: first, installing the transition plate 2 on the front side of the corrugated guardrail plate 1 and the beam 4, and making the first guide plate 23 inserted into the corrugated groove on the front side of the corrugated guardrail plate 1, and the second guide plate 24 inserted into the gap between two adjacent beams 4; then respectively installing the corrugated guardrail plate end connecting rod 32 and the beam end connecting rod 33, and making the corrugated guardrail plate end connecting rod 32 pass through the through-hole on the guide plate 26 and the corrugated groove on the rear side of the corrugated guardrail plate 1 in turn, and the beam end connecting rod 33 passes through the middle cavity of the beam 4; finally installing the transition connecting rod 31, and connecting the corrugated guardrail plate end connecting rod 32 and the beam end connecting rod 33 through the transition connecting rod 31 to form a bridge guardrail bridge head transition structure, so as to play a supporting and buffering role when in use.

[0057] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0058] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A bridge guardrail bridgehead transition structure, characterized by: include The transition plate (2) is a transition steel plate arranged between the bridge guardrail and the highway guardrail, and one end of the transition plate (2) is connected to a roadbed section corrugated guardrail plate (1) arranged on the bridge guardrail or the highway guardrail, and the other end is connected to a crossbeam (4) arranged on the bridge guardrail or the highway guardrail; The buffer connection component (3) is arranged on the rear side of the transition plate (2), and one end of the buffer connection component (3) is connected to the crossbeam (4), and the other end is connected to the corrugated guardrail plate (1).

2. A bridge guardrail bridgehead transition structure as claimed in claim 1, characterized in that: The transition plate (2) is arranged on the front side of the corrugated guardrail plate (1) and the crossbeam (4), and comprises a front guard plate (21), and side guard plates (22) are symmetrically arranged on the upper and lower sides of the front guard plate (21).

3. A bridge guardrail bridgehead transition structure as claimed in claim 2, characterized in that: The side guard plate (22) is bent inwardly along the height direction of the front guard plate (21) and matches the corrugated guardrail plate (1) and the crossbeam (4).

4. A bridge guardrail bridgehead transition structure as claimed in claim 2, characterized in that: The left and right ends of the front guard plate (21) are respectively provided with A first guide plate (23) is arranged on the front guard plate (21) at one end close to the corrugated guardrail plate (1) and matches the corrugated groove on the front side of the corrugated guardrail plate (1); The second guide plate (24) is arranged on one end of the front guard plate (21) close to the cross beam (4) and matches the gap between two adjacent cross beams (4).

5. A bridge guardrail bridgehead transition structure as claimed in claim 2, characterized in that: A plurality of limit plates (25) are also provided on the inner side surface of the front guard plate (21), and a slot matching the buffer connection assembly (3) is formed between the limit plates (25) and the side guard plates (22).

6. A bridge guardrail bridgehead transition structure as claimed in claim 5, characterized in that: The inner side surface of the front guard plate (21) is also provided with a guide plate (26), the guide plate (26) is arranged at the end of the slot of the front guard plate (21) close to one end of the corrugated guardrail plate (1), and a through hole is arranged on the guide plate (26).

7. A bridge guardrail bridgehead transition structure as claimed in claim 6, characterized in that: The buffer connection assembly (3) comprises The transition connecting rod (31) is a steel pipe structure matching the transition plate (2); The corrugated guardrail plate end connecting rod (32) is arranged at one end of the transition connecting rod (31) close to the corrugated guardrail plate (1) and matches the through-hole on the guide plate (26) and the corrugated groove on the rear side of the corrugated guardrail plate (1); The crossbeam end connecting rod (33) is arranged at one end of the transition connecting rod (31) close to the crossbeam (4) and matches the middle cavity of the crossbeam (4).

8. A bridge guardrail bridgehead transition structure as claimed in claim 7, characterized in that: The transition areas of the two end bends of the ferry connecting rod (31) are provided with clearance slots (311), and the clearance slots (311) match the corrugated guardrail plate end connecting rod (32) and the crossbeam end connecting rod (33).

9. A bridge guardrail bridgehead transition structure as claimed in claim 8, characterized in that: A middle connection area sleeve is also provided between the two end yielding slots (311) of the ferry link (31), and the middle connection area sleeve is matched with the fixed end portions of the corrugated guardrail plate end link (32) and the crossbeam end link (33) respectively.

10. The bridge guardrail bridgehead transition structure according to claim 1, characterized in that: One end of the transition plate (2) is fixedly connected to the corrugated guardrail plate (1), and the other end is movably connected to the crossbeam (4); one end of the buffer connection component (3) is fixedly connected to the crossbeam (4), and the other end is movably connected to the corrugated guardrail plate (1).

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