Lightweight HA-grade high-strength steel guardrail structure

Abstract

A lightweight HA-grade high-strength steel guardrail structure comprises square tube stand columns, a cross beam and a base, mounting grooves are formed in the front faces of the square tube stand columns, the cross beam is mounted in the mounting grooves, the mounting grooves and the cross beam are spliced through connecting bolts, mounting openings are formed in the side faces of the square tube stand columns, the connecting bolts penetrate through the mounting openings, and the bottoms of the square tube stand columns are welded to the top of the base. A base is welded to the bottom of each square tube stand column, the bottoms of the bases are welded to a steel box girder, and the bases are connected into a whole through steel baffles. The protection level reaches the HA level, and on-site installation and construction are convenient.

Description

Technical Field

[0001] The utility model relates to the field of traffic safety facilities, and more specifically, to a lightweight HA-level high-strength steel guardrail structure. Background Art

[0002] With the rapid growth of the number of bridges, the running safety of vehicles on bridge sections has attracted more and more attention. As the last line of defense to protect the driving safety of vehicles, the safety of bridge guardrails is of crucial importance.

[0003] There are various forms of bridge guardrails in China, such as concrete guardrails, combined guardrails, beam-column type steel guardrails, etc. Among them, the beam-column type steel guardrails are increasingly used due to their advantages such as good permeability and landscape effect. However, it is found in actual applications that some beam-column type steel guardrails on bridges have some defects and deficiencies in structural design, which will affect the safety protection performance of the guardrails. Once a vehicle breaks through the bridge guardrail, it is very easy to cause an accident where the vehicle directly collides with the stay cables, which will directly affect the safety of the main body of the bridge. At the same time, all the beam-column type steel guardrails obtained by domestic research are of strong beam and strong column structures, and the material consumption is relatively large, which causes a great burden of permanent load on the bridge body.

[0004] Combined with the current status and related requirements of bridge guardrails and relevant code regulations, a lightweight HA-level high-strength steel guardrail structure is proposed. Content of the Utility Model

[0005] The purpose of the utility model is to provide a lightweight HA-level high-strength steel guardrail structure.

[0006] To achieve the above technical purpose, the technical solution of the utility model is realized as follows:

[0007] A lightweight HA-level high-strength steel guardrail structure includes square tube columns, cross beams, and bases. An installation groove is arranged in front of the square tube column, and the cross beam is installed in the installation groove. The installation groove and the cross beam are assembled by connecting bolts. An installation opening is arranged on the side of the square tube column, and the connecting bolts pass through the installation opening. The bottom of the square tube column is welded to the top of the base. A base is welded to the bottom of each square tube column, and the bottom of the base is welded to the steel box girder. The bases are connected into a whole by steel baffles.

[0008] Furthermore, support plates are arranged on three sides in the installation groove. The support plates are welded to the grooving position in front of the square tube column, and connecting bolt holes are arranged in the upper and lower layers of the support plates, which are matched with the connecting bolt holes on the cross beam.

[0009] Further, the installation openings are arranged on the left and right sides of the square tube column and penetrate through the square tube column. The positions of the installation openings are arranged at intervals. Installation openings are provided at the bottom of the bolting position of the uppermost cross beam, and installation openings are provided at the upper and lower parts of the bolting positions of the remaining several layers of cross beams.

[0010] Further, stiffening angle ribs are provided at the welding position between the square tube column and the base, and stiffening angle ribs are provided on all four surfaces of the square tube column.

[0011] Further, the base is an independent block, and the base is welded and assembled into a shape through a channel-shaped folding plate and a sealing plate. The channel-shaped folding plate is buckled on the steel box girder, and the base forms a closed cavity.

[0012] Further, the steel baffle is arranged between every two of the bases. The upper part of the steel baffle is provided with an arc angle and matches the cross section of the base. The steel baffle is welded to the front surface of the base, and the steel baffle and the base form a closed strip surface.

[0013] Further, drain holes may be provided in the steel baffle.

[0014] Further, the square tube column and the base may be fixed by bolting, and manholes are provided on the base.

[0015] Further, the base and the steel box girder may be fixed by bolting, and manholes are provided on the base.

[0016] Further, the materials of the square tube column and the cross beam are 700L alloy steel.

[0017] After adopting the above technical solutions, the present utility model has the following beneficial effects:

[0018] (1) The protection level reaches HA level, and the protection energy is not less than 760 kJ;

[0019] (2) It has excellent functions of preventing vehicle rollover and guiding;

[0020] (3) While meeting safety requirements, it greatly reduces the load borne by the bridge;

[0021] (4) The connection method of the column foundation can be bolted or welded, and the construction is convenient. Description of the Drawings

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0023] Figure 1 It is the elevation view of Embodiment 1 of the present utility model;

[0024] Figure 2 It is the sectional view of Embodiment 1 of the present utility model;

[0025] Figure 3 It is the front three-dimensional view of the column and the base of Embodiment 1 of the present utility model;

[0026] Figure 4 It is the back three-dimensional view of the column and the base of Embodiment 1 of the present utility model;

[0027] Figure 5 It is the sectional view of the base of Embodiment 1 of the present utility model;

[0028] Figure 6 It is the elevation view of Embodiment 2 of the present utility model;

[0029] Figure 7 It is the sectional view of Embodiment 2 of the present utility model;

[0030] Figure 8 It is the three-dimensional view of the column of Embodiment 2 of the present utility model.

[0031] The markings in the figure are as follows:

[0032] 1. Column; 2. Cross beam; 3. Base; 4. Installation groove; 5. Connecting bolt; 6. Installation opening; 7. Steel box girder; 8. Steel baffle; 9. Support plate; 10. Connecting bolt hole; 11. Stiffening angle rib; 12. Grooved folded plate; 13. Sealing plate; 14. Drainage hole; 15. Manhole. Specific embodiments

[0033] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present utility model.

[0034] As Figures 1-5 shown is the exemplary view of Embodiment 1 of the present utility model described. A lightweight HA-level high-strength steel guardrail structure includes a square tube column 1, a cross beam 2, and a base 3. An installation groove 4 is provided in front of the square tube column 1, and the cross beam 2 is installed in the installation groove 4. The installation groove 4 and the cross beam 2 are assembled by connecting bolts 5. An installation opening 6 is provided on the side of the square tube column 1, and the connecting bolt 5 passes through the installation opening 6. The bottom of the square tube column 1 is welded to the top of the base 3, and a base 3 is welded to the bottom of each square tube column 1. The bottom of the base 3 is welded to the steel box girder 7, and the bases 3 are connected into a whole by steel baffles 8.

[0035] Three sides inside the installation groove 4 are provided with support plates 9, the support plates 9 are welded to the grooving position on the front surface of the square tube column 1, and the upper and lower layers of support plates 9 are provided with connecting bolt holes 10, which are matched with the connecting bolt holes 10 on the cross beam 2.

[0036] The installation openings 6 are arranged on the left and right sides of the square tube column 1 and penetrate through the square tube column 1. The positions of the installation openings 6 are arranged at intervals. An installation opening 6 is arranged at the bottom of the bolting position of the topmost cross beam 2, and installation openings 6 are arranged at the upper and lower parts of the bolting positions of several other layers of cross beams 2.

[0037] Stiffening angle ribs 11 are arranged at the welding position between the square tube column 1 and the base 3, and stiffening angle ribs 11 are arranged on all four surfaces of the square tube column 1.

[0038] The base 3 is an independent block, and the base 3 is welded and assembled into a shape through a channel-shaped folding plate 12 and a sealing plate 13. The channel-shaped folding plate 12 is buckled on the steel box girder 7, and the base 3 forms a closed cavity.

[0039] The steel baffle 8 is only arranged between every two bases 3. The upper part of the steel baffle 8 is provided with an arc angle and is matched with the cross section of the base 3. The steel baffle 8 is welded to the front surface of the base 3, and the steel baffle 8 and the base 3 form a closed strip surface.

[0040] The steel baffle 8 is provided with drain holes 14.

[0041] The base 3 and the steel box girder 7 may be fixed by bolting, and the base 3 is provided with a manhole 15.

[0042] The materials of the square tube column 1 and the cross beam 2 are 700L alloy steel.

[0043] As Figures 6-8 shown, it is a schematic diagram of Embodiment 2 of the present utility model. A lightweight HA-level high-strength steel guardrail structure includes a square tube column 1, a cross beam 2, and a base 3. An installation groove 4 is arranged on the front surface of the square tube column 1, and the cross beam 2 is installed in the installation groove 4. The installation groove 4 and the cross beam 2 are assembled by connecting bolts 5. Installation openings 6 are arranged on the side surface of the square tube column 1, and the connecting bolts 5 penetrate through the installation openings 6. The bottom of the square tube column 1 is bolted to the top of the base 3, and each bottom of the square tube column 1 is bolted to a base 3. The bottom of the base 3 is welded to the steel box girder 7, and the bases 3 are connected into a whole through steel baffles 8.

[0044] Three sides inside the installation groove 4 are provided with support plates 9, the support plates 9 are welded to the grooving position on the front surface of the square tube column 1, and the upper and lower layers of support plates 9 are provided with connecting bolt holes 10, which are matched with the connecting bolt holes 10 on the cross beam 2.

[0045] The installation openings 6 are arranged on the left and right sides of the square tube column 1 and penetrate through the square tube column 1. The positions of the installation openings 6 are arranged at intervals. An installation opening 6 is provided at the bottom of the bolting position of the uppermost cross beam 2, and installation openings 6 are provided at the upper and lower parts of the bolting positions of the remaining several cross beams 2.

[0046] Stiffening angle ribs 11 are arranged at the welding position between the square tube column 1 and the base 3, and the stiffening angle ribs 11 are arranged on all four surfaces of the square tube column 1.

[0047] The base 3 is an independent block. The base 3 is welded and assembled into a shape through a channel-shaped folding plate 12 and a sealing plate 13. The channel-shaped folding plate 12 is buckled on the steel box girder 7, and the base 3 forms a closed cavity.

[0048] The steel baffle 8 is only arranged between every two bases 3. An arc angle is provided at the upper part of the steel baffle 8 and is matched with the cross section of the base 3. The steel baffle 8 is welded to the front surface of the base 3, and the steel baffle 8 and the base 3 form a closed strip surface.

[0049] The steel baffle 8 is provided with drainage holes 14.

[0050] The base 3 and the steel box girder 7 are fixed by bolting, and the base 3 is provided with a manhole 15.

[0051] The materials of the square tube column 1 and the cross beam 2 are 700L alloy steel.

[0052] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A lightweight HA-grade high-strength steel guardrail structure, comprising a square tube column (1), a crossbeam (2), and a base (3), characterized in that: A mounting groove (4) is arranged in front of the square tube column (1), a cross beam (2) is installed in the mounting groove (4), the mounting groove (4) and the cross beam (2) are assembled by connecting bolts (5), a mounting opening (6) is arranged on the side of the square tube column (1), the connecting bolts (5) are inserted through the mounting opening (6), the bottom of the square tube column (1) is welded to the top of the base (3), each of the square tube columns (1) is welded to the bottom of a base (3), the bottom of the base (3) is welded to the steel box beam (7), and the bases (3) are connected as a whole by a steel baffle (8).

2. A lightweight HA-grade high-strength steel guardrail structure according to claim 1, characterized in that: Support plates (9) are arranged on three sides of the installation groove (4), the support plates (9) are welded to the front groove positions of the square tube columns (1), and the upper and lower support plates (9) are provided with connecting bolt holes (10) that match the connecting bolt holes (10) on the crossbeam (2).

3. A lightweight HA-grade high-strength steel guardrail structure according to claim 1, characterized in that: The mounting openings (6) are arranged on the left and right sides of the square tube column (1) and pass through the square tube column (1). The mounting openings (6) are arranged at intervals. The mounting openings (6) are arranged at the bottom of the bolted position of the topmost layer of beams (2), and the mounting openings (6) are arranged at the top and bottom of the bolted positions of the remaining layers of beams (2).

4. A lightweight HA-grade high-strength steel guardrail structure according to claim 1, characterized in that: A stiffening corner rib (11) is provided at the welding position between the square tube column (1) and the base (3), and stiffening corner ribs (11) are provided on all four surfaces of the square tube column (1).

5. The lightweight HA-grade high-strength steel guardrail structure according to claim 1, characterized in that: The base (3) is an independent block, and the base (3) is formed by welding and assembling a groove-shaped folded plate (12) and a sealing plate (13). The groove-shaped folded plate (12) is inverted on the steel box beam (7), and the base (3) forms a closed cavity.

6. The lightweight HA-grade high-strength steel guardrail structure according to claim 1, characterized in that: The steel baffle (8) is only between every two bases (3), an arc angle is set on the upper part of the steel baffle (8) and also matches the cross-section of the base (3), the steel baffle (8) is welded to the front of the base (3), and the steel baffle (8) and the base (3) form a closed strip surface.

7. The lightweight HA-grade high-strength steel guardrail structure according to claim 1, characterized in that: The steel baffle (8) may be provided with a drainage hole (14).

8. The lightweight HA-grade high-strength steel guardrail structure according to claim 1, characterized in that: The square tube column (1) is fixed to the base (3) by bolting, and the base (3) is provided with a hand hole (15).

9. The lightweight HA-grade high-strength steel guardrail structure according to claim 1, characterized in that: The base (3) and the steel box girder (7) are fixed to each other by bolting, and a hand hole (15) is provided on the base (3).

10. The lightweight HA-grade high-strength steel guardrail structure according to claim 1, characterized in that: The square tube columns (1) and crossbeams (2) are made of 700L alloy steel.

Images