Base buffering structure for bridge guardrail stand column

Abstract

The utility model relates to a base buffering structure for a bridge guardrail stand column, which belongs to the field of buffering structures, is arranged between a stand column flange and a box girder and comprises a supporting pad, one side of the supporting pad is abutted against the stand column flange, the other side of the supporting pad is abutted against the box girder, and the stand column flange is connected with the box girder through a plurality of bolts. A plurality of air storage holes used for storing air are formed in the supporting pad along the axis of the supporting pad, one side of each air storage hole is sealed by a stand column flange, and the other side of each air storage hole is sealed by a box girder to form an air storage cavity. Due to the arrangement of the multiple air storage cavities, when the guardrail is impacted, air in the air storage cavities is extruded and diffused to absorb part of impact force, the impact force is further absorbed in cooperation with the supporting pads, damage to the joint of the bridge guardrail during collision is reduced, meanwhile, the possibility that an anti-corrosion layer is abraded after the bridge guardrail is used for a long time is reduced, and the service life of the bridge guardrail is prolonged. Therefore, the service life of the whole bridge guardrail is prolonged.

Description

Technical Field

[0001] This application relates to the field of buffer structures, and in particular to a base buffer structure for bridge railing posts. Background Technology

[0002] The column flanges of the steel guardrails for beam-column bridges are directly installed on the steel box girder or concrete box girder of the bridge deck, which is a rigid connection.

[0003] When cars cross a bridge, they cause vibrations. After prolonged vibration, friction occurs between the rigid connection surfaces, causing the connection between the column flanges and the bridge deck to loosen. Furthermore, prolonged friction can damage the anti-corrosion layer on the flange surface, resulting in a loss of the function and strength of the bridge railings.

[0004] If the materials of the column flange and the steel box girder are different after the anti-corrosion layer is damaged, the difference between the materials will cause an electrochemical reaction, which will accelerate the corrosion rate of the materials and affect the service life of the guardrail. Therefore, this needs to be improved. Utility Model Content

[0005] To address the aforementioned issues, this application provides a base buffer structure for bridge guardrail posts.

[0006] This application provides a base buffer structure for bridge guardrail posts, which adopts the following technical solution:

[0007] A base buffer structure for bridge railing posts is provided, which is set between the post flange and the box girder. It includes a support pad, one side of which abuts against the post flange and the other side of which abuts against the box girder. The post flange and the box girder are connected by several bolts. The support pad has several air storage holes along its own axis for storing air. Each air storage hole is closed on one side by the post flange and on the other side by the box girder to form an air storage cavity.

[0008] By adopting the above technical solution, the setting of multiple air storage chambers allows the air in the air storage chambers to be compressed and diffused when the guardrail is impacted, so as to absorb part of the impact force. In conjunction with the support pad, the impact force is further absorbed, reducing the damage to the connection of the bridge guardrail during collision. At the same time, it reduces the possibility of wear of the anti-corrosion layer of the bridge guardrail after long-term use, thereby extending the overall service life of the bridge guardrail.

[0009] Preferably, each of the gas storage holes is configured as an elliptical hole.

[0010] By adopting the above technical solution, after the column flange is fixed to the box girder, an elliptical air storage cavity is formed at the air storage hole, which facilitates the dispersion of the force transmitted to the connection between the column flange and the box girder. Moreover, the elliptical structure is convenient to achieve slight deformation. Compared with the circular or square shape, it has a better force dispersion effect, further reducing the possibility of damage to the anti-corrosion layer on the surface of the column flange caused by friction at the connection between the column flange and the box girder, thereby further extending the overall service life of the guardrail.

[0011] Preferably, each of the gas storage holes is evenly arranged on the support pad around the axis of the support pad.

[0012] By adopting the above technical solution, after the column flange and box girder are fixed, the evenly arranged air storage holes form an evenly arranged air storage cavity, so that the subsequent force transmitted to the column flange and box girder is more evenly distributed to various parts of the support pad, reducing the possibility of the force being concentrated in the fixed area of ​​the support pad, improving the protection ability of the support pad for the column flange and box girder, that is, improving the protection ability of the support pad for the overall guardrail.

[0013] Preferably, the support pad has a plurality of mounting holes for bolts to pass through.

[0014] By adopting the above technical solution, the setting of mounting holes reduces the number of drilling steps for workers on the construction site, and provides convenience for workers to install support pads.

[0015] Preferably, the thickness of the support pad is 5-10 mm.

[0016] Preferably, the support pad includes a first buffer layer, a fiber layer, a second buffer layer, a steel wire layer and a third buffer layer arranged in sequence, with one side of the fiber layer embedded in the first buffer layer and the other side embedded in the second buffer layer, and one side of the steel wire layer embedded in the second buffer layer and the other side embedded in the third buffer layer.

[0017] By adopting the above technical solution, the first buffer layer, the second buffer layer and the third buffer layer all buffer the impact force on the connection between the column flange and the box girder. At the same time, the setting of the fiber layer and the steel wire layer improves the overall structural strength of the support pad, reducing the possibility of excessive deformation and damage to the support pad during use, and providing convenience for the support pad to more stably protect the connection between the column flange and the box girder.

[0018] Preferably, both the fiber layer and the steel wire layer are arranged in a mesh pattern.

[0019] By adopting the above technical solution, the mesh-like fiber layer and steel wire layer can easily support different positions of the support pad, thereby improving the overall support capacity of the fiber layer and steel wire layer for the support pad.

[0020] Preferably, a support plate is embedded in the second buffer layer, and the support plate is disposed between the fiber layer and the steel wire layer.

[0021] By adopting the above technical solution, the support plate increases the structural strength inside the second buffer layer, that is, increases the overall structural strength of the support pad, thereby further improving the support pad's ability to support the column flange and its ability to protect the guardrail as a whole.

[0022] In summary, this application includes at least one of the following beneficial technical effects:

[0023] 1. By setting up support pads and multiple air storage holes, after the support pads are installed, each air storage hole forms an air storage chamber. When the guardrail is impacted, the air in the air storage chambers is compressed and diffused to absorb part of the impact force. At the same time, the support pads absorb part of the impact force, which improves the impact absorption effect of the support pads and thus improves the overall protection capability of the guardrails, thereby extending the service life of the guardrails.

[0024] 2. By setting elliptical air storage holes, the impact force transmitted to the support pad can be easily dispersed, and the elliptical shape has good extensibility and a good force dispersion effect;

[0025] 3. By adding steel wire and fiber layers, the internal structural strength of the support pad is increased, so that the support pad can provide more stable protection for the guardrail. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0027] Figure 2 This is a structural schematic diagram illustrating the positional relationship between the gas storage chamber, the column flange, and the box girder in an embodiment of this application;

[0028] Figure 3 This is a schematic diagram illustrating the structure of the support pad in an embodiment of this application;

[0029] Figure 4 This is a structural schematic diagram illustrating the positional relationship between the support pad, the fiber layer, and the steel wire layer, as described in this application embodiment.

[0030] Explanation of reference numerals in the attached drawings: 1. Column flange; 2. Box girder; 3. Support pad; 31. Air storage hole; 32. Mounting hole; 33. First buffer layer; 34. Fiber layer; 35. Second buffer layer; 36. Steel wire layer; 37. Third buffer layer; 4. Bolt; 5. Air storage cavity; 6. Support plate. Detailed Implementation

[0031] The following is in conjunction with the appendix Figure 1-4 This application is described in further detail.

[0032] This application discloses a base buffer structure for bridge railing posts. (Refer to...) Figure 1 and Figure 2 A base buffer structure for bridge railing posts is disclosed, positioned between a post flange 1 and a box girder 2. The structure includes a support pad 3, one side of which abuts against the post flange 1, and the other side against the box girder 2. The post flange 1 and the box girder 2 are connected by several bolts 4. The support pad 3 has several air storage holes 31 along its axis. Each air storage hole 31 is closed on one side by the post flange 1 and on the other side by the box girder 2, forming an air storage chamber 5. When the post is impacted, the support pad 3 absorbs part of the impact force, while the air in the air storage chamber 5 is compressed and diffused, further absorbing the impact force. This reduces the possibility of hard contact between the post flange 1 and the box girder 2, and also reduces the possibility of damage to the anti-corrosion layer on the surface of the post flange 1, thereby improving the overall service life of the railing.

[0033] Reference Figure 3 The thickness of the support pad 3 is 5-10mm, and in this application, the thickness of the support pad 3 is set to 8mm. Each air storage hole 31 is an elliptical hole. Elliptical holes have better force transmission capabilities than square or circular holes, and the elliptical structure facilitates slight deformation, allowing for a more stable distribution of the force transmitted between the column flange 1 and the box girder 2. Furthermore, each air storage hole 31 is evenly distributed around the axis of the support pad 3.

[0034] Reference Figure 2 To facilitate the installation of the support pad 3, several mounting holes 32 are provided on the support pad 3 for the bolts 4 to pass through.

[0035] During the use of the support pad 3 by the workers, the installation hole 32 reduces the number of drilling steps on site, thereby speeding up the workers' construction speed.

[0036] Reference Figure 4 The support pad 3 includes a first buffer layer 33, a fiber layer 34, a second buffer layer 35, a steel wire layer 36, and a third buffer layer 37 arranged sequentially. One side of the fiber layer 34 is embedded in the first buffer layer 33, and the other side is embedded in the second buffer layer 35. One side of the steel wire layer 36 is embedded in the second buffer layer 35, and the other side is embedded in the third buffer layer 37. Both the fiber layer 34 and the steel wire layer 36 are arranged in a mesh pattern.

[0037] Reference Figure 4 The first buffer layer 33, the second buffer layer 35 and the third buffer layer 37 are all made of rubber. The rubber is soft and has good insulation ability, which reduces the possibility of electrochemical reaction caused by friction between the column flange 1 and the box girder 2 and the support pad 3 when they vibrate.

[0038] The fiber layer 34 is woven from several basalt fibers, and the steel wire layer 36 is woven from several steel wires. Both the basalt fibers and the steel wires have high hardness, which improves the internal structural strength of the support pad 3, thereby improving the support capacity of the support pad 3 for the column flange 1 and the protection capacity for the guardrail.

[0039] Reference Figure 4 A support plate 6 is embedded in the second buffer layer 35, located between the fiber layer 34 and the steel wire layer 36. The support plate 6 is made of steel, which has high rigidity and supports the fiber layer 34 and the steel wire layer 36, reducing the possibility of deformation during use. The fiber layer 34 is positioned closer to the column flange 1, and the steel wire layer 36 is positioned closer to the box girder 2.

[0040] The implementation principle of the base buffer structure for bridge railing posts in this application embodiment is as follows: the setting of multiple air storage chambers 5 allows the air in the air storage chambers 5 to be compressed and diffused when the railing is impacted, so as to absorb part of the impact force. In conjunction with the support pad 3, the impact force is further absorbed, reducing the damage to the connection of the bridge railing during collision. At the same time, it reduces the possibility of wear of the anti-corrosion layer of the bridge railing after long-term use, thereby extending the overall service life of the bridge railing.

[0041] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A base buffer structure for bridge railing posts, disposed between the post flange (1) and the box girder (2), characterized in that: The support pad (3) is provided. One side of the support pad (3) abuts against the column flange (1) and the other side abuts against the box beam (2). The column flange (1) and the box beam (2) are connected by several bolts (4). The support pad (3) has several air storage holes (31) for storing air along its own axis. Each air storage hole (31) is closed on one side by the column flange (1) and closed on the other side by the box beam (2) to form an air storage cavity (5).

2. The base buffer structure for bridge railing posts according to claim 1, characterized in that: Each of the gas storage holes (31) is configured as an elliptical hole.

3. The base buffer structure for bridge railing posts according to claim 1, characterized in that: Each of the gas storage holes (31) is evenly arranged on the support pad (3) around the axis of the support pad (3).

4. The base buffer structure for bridge railing posts according to claim 1, characterized in that: The support pad (3) has several mounting holes (32) for bolts (4) to pass through.

5. The base buffer structure for bridge railing posts according to claim 1, characterized in that: The thickness of the support pad (3) is 5-10 mm.

6. The base buffer structure for bridge railing posts according to claim 1, characterized in that: The support pad (3) includes a first buffer layer (33), a fiber layer (34), a second buffer layer (35), a steel wire layer (36), and a third buffer layer (37) arranged in sequence. One side of the fiber layer (34) is embedded in the first buffer layer (33) and the other side is embedded in the second buffer layer (35). One side of the steel wire layer (36) is embedded in the second buffer layer (35) and the other side is embedded in the third buffer layer (37).

7. A base buffer structure for bridge railing posts according to claim 6, characterized in that: Both the fiber layer (34) and the wire layer (36) are arranged in a mesh pattern.

8. A base buffer structure for bridge railing posts according to claim 6, characterized in that: The second buffer layer (35) is embedded with a support plate (6), which is disposed between the fiber layer (34) and the wire layer (36).

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