Metal beam column type bridge guardrail

Abstract

The utility model discloses a metal beam column type bridge guardrail, which relates to the technical field of bridge construction, and comprises a stand column and a cross beam, the stand column is anchored on a flange plate, the cross beam is connected with the stand column, the bottom of one side of the stand column far away from the cross beam is provided with a groove, one side of the stand column close to the cross beam is provided with an upper angle steel and a lower angle steel, and the upper angle steel and the lower angle steel are connected with each other. The upper angle steel and the lower angle steel are symmetrically arranged, and the cross beam is located between the upper angle steel and the lower angle steel. The protective capacity of the guardrail is guaranteed, and meanwhile when collision load reaches a certain value, the guardrail stand columns are bent, so that the load is prevented from being completely transmitted to a flange plate of a bridge; meanwhile, the beams and the stand columns are easy to install and high in installation efficiency.

Description

Technical Field

[0001] This utility model relates to the field of bridge construction technology, and in particular to a metal beam-column type bridge railing. Background Technology

[0002] During the use of roads and bridges, crash barriers are an important measure to ensure driving safety. When the barrier is hit by a car, the collision load is transferred to the column through the crossbeam, and then to the main beam through the anchor connection at the bottom of the column. The anchoring method at the bottom of the column ensures a reliable connection between the crash barrier and the road and bridge.

[0003] However, when the collision load exceeds the guardrail's tolerance, the anchored posts and bridge flanges cause deformation of the anchored bridge flanges after the impact, resulting in damage to the bridge flanges and affecting the bridge structure. This not only makes maintenance difficult in the future but also affects the overall use of the bridge.

[0004] Meanwhile, the installation of existing guardrails, posts, and beams is inconvenient, often requiring two people to work simultaneously: one person lifts the beam to the designated position on the post, while the other person secures it, resulting in low installation efficiency. Utility Model Content

[0005] The purpose of this utility model is to provide a metal beam-column type bridge railing to solve the problems existing in the background art.

[0006] The objective of this utility model is achieved through the following technical solution:

[0007] A metal beam-column type bridge railing includes columns and crossbeams. The columns are anchored to flange plates, and the crossbeams are connected to the columns. The bottom of the column on the side away from the crossbeams is provided with a groove. The column on the side close to the crossbeams is provided with upper and lower angle steels, which are arranged symmetrically. The crossbeams are located between the upper and lower angle steels.

[0008] Furthermore, the lower angle steel is welded to the crossbeam, the upper angle steel is bolted to the crossbeam, and the crossbeam is bolted to the upper angle steel and the lower angle steel.

[0009] Furthermore, the column has an H-shaped structure, with the side of the column connected to the crossbeam perpendicular to the flange plate, and the side of the column away from the crossbeam being an inclined surface. The column is provided with multiple connecting plates, which are parallel to the flange plate.

[0010] Furthermore, the cross-section of the beam is D-shaped, the vertical surface of the beam abuts against the column, and a connecting pipe is provided in two adjacent beams. The two adjacent beams and the connecting pipe are connected by bolts.

[0011] Furthermore, the column and the flange are connected by chemical bolts, which include a chemical tube, a screw, a washer, and a nut.

[0012] The beneficial effects of this utility model are:

[0013] 1) Protect the flange plate and bridge structure. A groove is set at the rear of the column to reduce the section moment and ensure the protective capacity of the guardrail. At the same time, when the collision load reaches a certain value, the guardrail column bends to prevent the entire load from being transferred to the flange plate of the bridge.

[0014] 2) Improved installation efficiency and reduced manpower. Because the lower angle steel was pre-installed, workers could directly place the crossbeam on it and complete subsequent tasks.

[0015] 3) Good protective effect and good aesthetics. The bolts connecting the upper angle steel, crossbeam and lower angle steel are perpendicular to the bridge deck and do not protrude from the impact surface of the crossbeam, ensuring safety while also being aesthetically pleasing; the D-shaped cross section of the crossbeam serves as a buffer while also taking into account aesthetics. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a metal beam-column type bridge railing according to the present invention;

[0017] Figure 2 This is a front view of a metal beam-column type bridge railing according to the present invention;

[0018] Figure 3 This is a side view of a metal beam-column type bridge railing according to the present invention.

[0019] In the diagram, 1-column, 2-beam, 3-flange plate, 4-groove, 5-upper angle steel, 6-lower angle steel, 7-connecting plate, 8-chemical bolt, 9-connecting pipe. Detailed Implementation

[0020] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0021] See Figures 1-3 This utility model provides a technical solution:

[0022] like Figures 1-3As shown, a metal beam-column type bridge railing includes a column 1 and a crossbeam 2. The column 1 is anchored to a flange plate 3. The crossbeam 2 is connected to the column 1. The bottom of the column 1 on the side away from the crossbeam 2 is provided with a groove 4. The side of the column 1 near the crossbeam 2 is provided with an upper angle steel 5 and a lower angle steel 6. The upper angle steel 5 and the lower angle steel 6 are arranged symmetrically. The crossbeam 2 is located between the upper angle steel 5 and the lower angle steel 6.

[0023] Through the above technical solution, the groove 4 at the rear of the column 1 reduces the section moment, ensuring the protective capability of the guardrail. Simultaneously, when the collision load reaches a certain value, the guardrail column 1 bends, preventing the entire load from being transferred to the bridge flange 3, thus protecting the flange 3 and consequently the bridge structure. Furthermore, depending on the load conditions and the height of the column 1, different layers of crossbeams 2 can be installed to improve the guardrail's impact resistance. The column 1 and crossbeams 2 are connected by upper angle steel 5 and lower angle steel 6, improving installation efficiency.

[0024] Furthermore, the lower angle steel 6 is welded to the crossbeam 2, the upper angle steel 5 is bolted to the crossbeam 2, and the crossbeam 2 is bolted to the upper angle steel 5 and the lower angle steel 6.

[0025] Through the above technical solution, the lower angle steel 6 is pre-welded to the column 1 to position the crossbeam 2. Then, the crossbeam 2 is placed on the lower angle steel 6. The upper angle steel 5 is adjusted to abut against the top of the crossbeam 2 and then fixed to the column 1. At this point, the crossbeam 2 is confined between the upper angle steel 5 and the lower angle steel 6. Finally, bolts are passed through the upper angle steel 5, the crossbeam 2, and the lower angle steel 6 to complete the fixation. Because the lower angle steel 6 is pre-installed, workers can directly place the crossbeam 2 on it and complete subsequent work. Installation and disassembly are simple, effectively improving installation efficiency and saving manpower. Simultaneously, the bolts connecting the upper angle steel 5, the crossbeam 2, and the lower angle steel 6 are perpendicular to the bridge deck, and the bolts do not protrude from the impact surface of the crossbeam 2, ensuring safety while also providing an aesthetically pleasing appearance.

[0026] Furthermore, the column 1 has an H-shaped structure, the side of the column 1 connected to the crossbeam 2 is perpendicular to the flange plate 3, the side of the column 1 away from the crossbeam 2 is an inclined surface, and the column 1 is provided with a plurality of connecting plates 7, which are parallel to the flange plate 3.

[0027] Through the above technical solution, the H-shaped column 1 can have its cross-sectional size selected according to different load distributions and the actual height of the column 1 arrangement. Simultaneously, the strength and protective capability of the column 1 are improved by setting multiple connecting plates 7. The vertical side of the column 1 facilitates the installation of the crossbeam 2, upper angle steel 5, and lower angle steel 6, while the frontal impact is beneficial for dispersing the impact between the column 1 and the crossbeam 2. At the same time, the inclined surface of the column 1 can effectively withstand the impact received from the front of the column 1.

[0028] Furthermore, the cross section of the beam 2 is D-shaped, the vertical surface of the beam 2 abuts against the column 1, and a connecting pipe 9 is provided in two adjacent beams 2. The two adjacent beams 2 and the connecting pipe 9 are connected by bolts.

[0029] Through the above technical solution, the D-shaped cross-section of the beam 2 effectively serves as a buffer against impacts. Furthermore, the outward-facing curved surface of the beam 2 is more aesthetically pleasing and reduces the accumulation of rain and snow. The vertical surface of the D-shaped cross-section abuts against the vertical surface of the column 1, reducing installation space and expanding its applicability. Simultaneously, the D-shaped cross-section is also suitable for inserting connecting pipes. Adjacent beams 2 can be connected by adding a connecting pipe 9 and bolting, allowing for rapid installation, improving installation efficiency, and facilitating the extension of the beam 2.

[0030] Furthermore, the column 1 and the flange plate 3 are connected by chemical bolts 8, which include a chemical tube, a screw, a washer, and a nut.

[0031] Through the above technical solution, the chemical hose contains reactive resin, curing agent, and quartz particles. The column 1 resists pull-out through the combined action of the bond force and mechanical interlocking force between the chemical bolts 8 and the concrete flange 3, and resists shear through the chemical bolts 8 themselves. This improves the connection strength between the column 1 and the flange 3.

[0032] The above description is merely a preferred embodiment of this utility model. It should be understood that this utility model is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the concept described herein through the above teachings or related technologies or knowledge. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of this utility model should be protected within the scope of the appended claims.

Claims

1. A metal beam-column type bridge railing, comprising columns (1) and crossbeams (2), wherein the columns (1) are anchored to flange plates (3), and the crossbeams (2) are connected to the columns (1), characterized in that: The bottom of the column (1) away from the crossbeam (2) is provided with a groove (4), and the column (1) near the crossbeam (2) is provided with an upper angle steel (5) and a lower angle steel (6). The upper angle steel (5) and the lower angle steel (6) are arranged symmetrically, and the crossbeam (2) is located between the upper angle steel (5) and the lower angle steel (6).

2. The metal beam-column type bridge railing according to claim 1, characterized in that: The lower angle steel (6) is welded to the crossbeam (2), the upper angle steel (5) is bolted to the crossbeam (2), and the crossbeam (2) is bolted to the upper angle steel (5) and the lower angle steel (6).

3. The metal beam-column type bridge railing according to claim 1, characterized in that: The column (1) has an H-shaped structure. The side of the column (1) connected to the crossbeam (2) is perpendicular to the flange plate (3). The side of the column (1) away from the crossbeam (2) is an inclined surface. The column (1) is provided with multiple connecting plates (7), which are parallel to the flange plate (3).

4. The metal beam-column type bridge railing according to claim 1, characterized in that: The cross section of the beam (2) is D-shaped. The vertical surface of the beam (2) abuts against the column (1). A connecting pipe (9) is provided in the two adjacent beams (2). The two adjacent beams (2) and the connecting pipe (9) are connected by bolts.

5. The metal beam-column type bridge railing according to claim 1, characterized in that: The column (1) and the flange plate (3) are connected by chemical bolts (8), which include chemical tubes, screws, washers and nuts.

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