Lightweight HA-grade high-strength steel guardrail structure

Abstract

A light-weight HA-grade high-strength steel guardrail structure comprises a stand column, a cross beam, a cross beam connecting component and a base, the stand column is formed by welding steel plates and comprises a front wing plate, a rear wing plate, a web plate, a bottom plate, a stiffening rib plate, side rib plates and angle ribs, the stiffening rib plate is in a folded-angle L shape, and the two sides of the stiffening rib plate are welded to the vertical intersection position of the front wing plate and the bottom plate; the three angle ribs are arranged at the break angle positions of the stiffening rib plate at intervals and staggered with the anchor bolt holes, the angle ribs are trapezoidal, the base angles of the angle ribs are provided with over-welding holes, the angle ribs are welded to the stiffening rib plate, the angle ribs are perpendicular to the front wing plate, the side rib plates and the rear wing plate are both in a break angle inverted-L shape, and the cross beams are arranged in four rows in the vertical height direction of the stand column. The cross beam and the stand columns are respectively bolted through cross beam connecting components and longitudinally connected through sleeves, the base is in a door shape formed by welding steel plates, and the stand columns are arranged on the base at intervals. The light weight is achieved, the safety is met, meanwhile, the load borne by the bridge is greatly reduced, and the excellent vehicle rolling prevention function and the excellent guiding function are achieved.

Description

Technical Field

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

[0002] With the rapid development of expressway construction in my country, bridge guardrails are an indispensable and important facility to ensure driving safety.

[0003] The design of the above-mentioned guardrails may appear extremely conservative, such as increasing the unit weight of the bridge guardrails and enlarging the cross-sectional shape. However, this also creates a huge burden of permanent load on the bridge itself. The load-bearing capacity of the bridge is limited according to the design value. In recent years, there have been frequent safety accidents of overturning of precast bridge panels. The increase in the deadweight of the bridge guardrails is bound to affect the load-bearing capacity of the live load of the bridge itself. In addition, for cable-stayed bridges or suspension bridge structures, there is also a key issue of the safety of the protective rigging to prevent vehicles from hitting the cables and damaging the bridge body. The unlimited increase and widening of the bridge guardrails is a serious waste of resources. We should find ways to solve the problem from the structural and material aspects.

[0004] Based on the current status and related needs of bridge guardrail protection and relevant specifications, a lightweight HA-grade high-strength steel guardrail structure is proposed. Utility Model Content

[0005] The utility model aims to provide a lightweight HA-grade high-strength steel guardrail structure.

[0006] In order to achieve the above technical purpose, the technical solution of the utility model is implemented as follows:

[0007] A lightweight HA-grade high-strength steel guardrail structure includes a column, a beam, a beam connecting member, and a base. The column is assembled by welding steel plates. The column includes a front wing plate, a rear wing plate, a web plate, a bottom plate, a stiffening rib plate, a side rib plate, and an angle rib. The stiffening rib plate is an "L" shape with an angle. The two sides of the stiffening rib plate are welded at the vertical intersection of the front wing plate and the bottom plate. Three angle ribs are arranged at intervals at the angle position of the stiffening rib plate and staggered with the anchor bolt hole. The angle rib is trapezoidal and a welding hole is arranged at the bottom corner. The angle rib is The stiffening ribs are welded, the corner ribs are at a vertical angle to the front wing plate, the side ribs and the rear wing plate are both in an inverted "L" shape with folded angles, and the side ribs are welded to the front wing plate, the rear wing plate, the web plate, and the bottom plate respectively to form a closed surface. The cross beams are arranged in four rows in the vertical height direction of the columns, and the cross beams and the columns are bolted and fixed by cross beam connecting members respectively. The cross beams are longitudinally connected by sleeves, and the base is a "gate" shape composed of welded steel plates. The columns are arranged on the base at intervals, and the bottom of the base is welded to the bridge plate.

[0008] Furthermore, the vertical height of the side ribs is not less than the height of the second layer of beams on the columns.

[0009] Furthermore, the collision surface of the crossbeam is flush with the front of the base.

[0010] Furthermore, the crossbeam connecting component is a channel steel, a flat plate or a rectangular tube. When the crossbeam connecting component is a channel steel, the column is welded to the plane of the back of the channel steel, and the crossbeam is inserted into the opening at the front of the channel steel and fixed by bolting. When the crossbeam connecting component is a flat plate, the crossbeam is welded to the plane of the flat plate, and the flat plate is fixed to the front wing by bolting. When the crossbeam connecting component is a rectangular tube, the crossbeam is welded to the plane of the rectangular tube, and the rectangular tube is fixed to the front wing by bolting.

[0011] Furthermore, when the column is welded and set on the base, the base plate is fitted with the base on all sides, and no anchor bolt holes are set on the base. When the column and the base are fixed with anchor bolts, anchor bolt holes are set on the base, and corresponding anchor bolt holes are also set on the side ribs. Hand holes are set on the back of the base at the position of each corresponding column, and the base is sealed with a sealing panel.

[0012] Furthermore, when the base is a concrete structure, the anchor bolts are anchored in the concrete base, the bottoms of the anchor bolts do not penetrate into the bridge slab, and are connected to the bridge slab via reserved steel bars.

[0013] Furthermore, the material of the columns, beams, beam connecting members and sleeves is 700L alloy steel.

[0014] After adopting the above technical solution, the utility model has the following beneficial effects:

[0015] (1) The protection level reaches HA level, and the protection energy is not less than 760kJ;

[0016] (2) It has excellent anti-vehicle rollover and guidance functions;

[0017] (3) The structure is lightweight, which ensures safety while greatly reducing the load on the bridge;

[0018] (4) The column foundation connection method can be bolted or welded, which is convenient for construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 This is an elevation view of Embodiment 1 of the present utility model;

[0021] Figure 2 It is a cross-sectional view of Embodiment 1 of the present utility model;

[0022] Figure 3 This is a three-dimensional diagram of a column in Embodiment 1 of the utility model;

[0023] Figure 4 This is a cross-sectional view of the base of Embodiment 1 of the utility model;

[0024] Figure 5 This is a elevation view of Embodiment 2 of the present utility model;

[0025] Figure 6 It is a cross-sectional view of Embodiment 2 of the present utility model;

[0026] Figure 7 This is a three-dimensional diagram of a column in Embodiment 2 of the present utility model;

[0027] Figure 8 This is a three-dimensional diagram of the rear wing panel of Embodiment 2 of the present utility model;

[0028] Fig. 9 This is a three-dimensional diagram of a stiffening rib plate according to Embodiment 2 of the present utility model;

[0029] Fig.10 This is a three-dimensional diagram of the corner rib of Example 2 of the utility model;

[0030] Fig.11 This is a cross-sectional view of the base of Embodiment 2 of the present utility model;

[0031] Fig.12 This is a three-dimensional diagram of the relationship between the base and the cover panel of Example 2 of the utility model;

[0032] Fig.13 This is a three-dimensional diagram of the sleeve of Example 2 of the utility model;

[0033] Fig.14 This is a three-dimensional diagram of the crossbeam of Embodiment 2 of the utility model;

[0034] Fig.15 It is a vertical view of Embodiment 3 of the present utility model;

[0035] Fig.16 It is a cross-sectional view of Embodiment 3 of the present utility model;

[0036] Fig.17 This is a three-dimensional diagram of a column in Embodiment 3 of the present utility model;

[0037] Fig.18 It is an elevation view of Embodiment 4 of the present utility model;

[0038] Fig.19 It is a cross-sectional view of embodiment 4 of the present utility model.

[0039] The following are marked in the figure:

[0040] 1. Column; 2. Crossbeam; 3. Crossbeam connecting member; 4. Base; 5. Anchor bolt; 6. Front wing plate; 7. Rear wing plate; 8. Web plate; 9. Bottom plate; 10. Stiffening rib plate; 11. Side rib plate; 12. Reserved steel bars; 13. Bridge plate; 14. Angle rib; 15. Casing; 16. Through-weld hole; 17. Anchor bolt hole; 18. Hand hole; 19. Covering panel. DETAILED DESCRIPTION

[0041] 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 belong to the scope of protection of the utility model.

[0042] like Figure 1-4 The figure shows an example of the embodiment 1 of the utility model. A lightweight HA-grade high-strength steel guardrail structure includes a column 1, a crossbeam 2, a crossbeam connecting member 3, and a base 4. The column 1 is assembled by welding steel plates. The column 1 includes a front wing plate 6, a rear wing plate 7, a web 8, a bottom plate 9, a stiffening rib plate 10, a side rib plate 11, and an angle rib 14. The stiffening rib plate 10 is an "L" shape with an angle. The two sides of the stiffening rib plate 10 are welded at the vertical intersection of the front wing plate 6 and the bottom plate 9. Three angle ribs 14 are spaced apart at the angle position of the stiffening rib plate 10 and staggered with the anchor bolt hole 17. The angle rib 14 is trapezoidal and a through-welding hole 16 is set at the bottom corner. 14 is welded with the stiffening rib 10, the angle rib 14 is at a vertical angle with the front wing plate 6, the side rib plate 11 and the rear wing plate 7 are both in an inverted "L" shape with a folded angle, and the side rib plate 11 is welded with the front wing plate 6, the rear wing plate 7, the web 8, and the bottom plate 9 respectively to form a closed surface, the cross beam 2 is arranged in four rows in the vertical height direction of the column 1, the cross beam 2 and the column 1 are respectively bolted and fixed by the cross beam connecting member 3, the cross beams 2 are longitudinally connected by the sleeve 15, the base 4 is a "door" shape composed of welded steel plates, the columns 1 are arranged on the base 4 at intervals, and the bottom of the base 4 is welded to the bridge plate 13.

[0043] The vertical height of the side rib plate 11 is not less than the height of the second layer of cross beams 2 on the column 1 .

[0044] The collision surface of the cross beam 2 is flush with the front face of the base 4 .

[0045] The crossbeam connecting member 3 is a channel steel, the column 1 is welded to the back plane of the channel steel, and the crossbeam 2 is inserted into the opening at the front of the channel steel and fixed by bolting.

[0046] When the column 1 is welded and set on the base 4, the bottom plate 9 is in contact with the base 4 on all sides, and the bottom plate is not provided with anchor bolt holes 17.

[0047] The material of the column 1, the beam 2, the beam connecting member 3 and the sleeve 15 is 700L alloy steel.

[0048] like Figure 5-14 The figure shows an example of Embodiment 2 of the utility model. A lightweight HA-grade high-strength steel guardrail structure, comprising a column 1, a crossbeam 2, a crossbeam connecting member 3, and a base 4. The column 1 is assembled by welding steel plates. The column 1 comprises a front wing plate 6, a rear wing plate 7, a web plate 8, a bottom plate 9, a stiffening rib plate 10, a side rib plate 11, and an angle rib 14. The stiffening rib plate 10 is an "L" shape with an angle. The two sides of the stiffening rib plate 10 are welded at the vertical intersection of the front wing plate 6 and the bottom plate 9. Three angle ribs 14 are spaced apart at the angle position of the stiffening rib plate 10 and staggered with the anchor bolt hole 17. The angle rib 14 is trapezoidal and a through-welding hole 16 is set at the bottom corner. 14 is welded with the stiffening rib 10, the angle rib 14 is at a vertical angle with the front wing plate 6, the side rib plate 11 and the rear wing plate 7 are both in an inverted "L" shape with a folded angle, and the side rib plate 11 is welded with the front wing plate 6, the rear wing plate 7, the web 8, and the bottom plate 9 respectively to form a closed surface, the cross beam 2 is arranged in four rows in the vertical height direction of the column 1, the cross beam 2 and the column 1 are respectively bolted and fixed by the cross beam connecting member 3, the cross beams 2 are longitudinally connected by the sleeve 15, the base 4 is a "door" shape composed of welded steel plates, the columns 1 are arranged on the base 4 at intervals, and the bottom of the base 4 is welded to the bridge plate 13.

[0049] The vertical height of the side rib plate 11 is not less than the height of the second layer of cross beams 2 on the column 1 .

[0050] The collision surface of the cross beam 2 is flush with the front face of the base 4 .

[0051] The crossbeam connecting member 3 is a channel steel, the column 1 is welded to the back plane of the channel steel, and the crossbeam 2 is inserted into the opening at the front of the channel steel and fixed by bolting.

[0052] When the column 1 and the base 4 are fixed by the anchor bolts 5, the bottom plate is provided with anchor bolt holes 17, and the side rib plate 11 is also provided with corresponding anchor bolt holes 17. The back of the base 4 is provided with hand holes 18 at the position corresponding to each column 1, and is sealed by a sealing panel 19.

[0053] The materials of the column 1, the crossbeam 2, the crossbeam connecting member 3 and the sleeve 15 are all 700L alloy steel.

[0054] like Figure 15-17The figure shows an example of the third embodiment of the utility model. A lightweight HA-grade high-strength steel guardrail structure, comprising a column 1, a crossbeam 2, a crossbeam connecting member 3, and a base 4. The column 1 is assembled by welding steel plates. The column 1 comprises a front wing plate 6, a rear wing plate 7, a web 8, a bottom plate 9, a stiffening rib plate 10, a side rib plate 11, and an angle rib 14. The stiffening rib plate 10 is an "L" shape with an angle. The two sides of the stiffening rib plate 10 are welded at the vertical intersection of the front wing plate 6 and the bottom plate 9. Three angle ribs 14 are arranged at intervals at the angle position of the stiffening rib plate 10 and staggered with the anchor bolt hole 17. The angle rib 14 is trapezoidal and a through-welding hole 16 is arranged at the bottom corner. 14 is welded with the stiffening rib 10, the angle rib 14 is at a vertical angle with the front wing plate 6, the side rib plate 11 and the rear wing plate 7 are both in an inverted "L" shape with a folded angle, and the side rib plate 11 is welded with the front wing plate 6, the rear wing plate 7, the web 8, and the bottom plate 9 respectively to form a closed surface, the cross beam 2 is arranged in four rows in the vertical height direction of the column 1, the cross beam 2 and the column 1 are respectively bolted and fixed by the cross beam connecting member 3, the cross beams 2 are longitudinally connected by the sleeve 15, the base 4 is a "door" shape composed of welded steel plates, the columns 1 are arranged on the base 4 at intervals, and the bottom of the base 4 is welded to the bridge plate 13.

[0055] The vertical height of the side rib plate 11 is not less than the height of the second layer of cross beams 2 on the column 1 .

[0056] The collision surface of the cross beam 2 is flush with the front face of the base 4 .

[0057] The cross beam connecting member 3 is a flat plate, the cross beam 2 is welded to the plane of the flat plate, and the flat plate is fixed to the front fender 6 by bolting.

[0058] When the column 1 is welded and set on the base 4, the bottom plate 9 is in contact with the base 4 on all sides, and the bottom plate is not provided with anchor bolt holes 17.

[0059] The material of the column 1, the beam 2, the beam connecting member 3 and the sleeve 15 is 700L alloy steel.

[0060] like Fig.18 , 19The figure shows an example of the fourth embodiment of the utility model. A lightweight HA-grade high-strength steel guardrail structure, comprising a column 1, a crossbeam 2, a crossbeam connecting member 3, and a base 4. The column 1 is assembled by welding steel plates. The column 1 comprises a front wing plate 6, a rear wing plate 7, a web plate 8, a bottom plate 9, a stiffening rib plate 10, a side rib plate 11, and an angle rib 14. The stiffening rib plate 10 is an "L" shape with an angle. The two sides of the stiffening rib plate 10 are welded at the vertical intersection of the front wing plate 6 and the bottom plate 9. Three angle ribs 14 are arranged at intervals at the angle position of the stiffening rib plate 10 and staggered with the anchor bolt hole 17. The angle rib 14 is a trapezoid and a through-welding hole 16 is arranged at the bottom corner. 14 is welded with the stiffening rib 10, the angle rib 14 is at a vertical angle with the front wing plate 6, the side rib plate 11 and the rear wing plate 7 are both in an inverted "L" shape with a folded angle, and the side rib plate 11 is welded with the front wing plate 6, the rear wing plate 7, the web 8, and the bottom plate 9 respectively to form a closed surface, the cross beam 2 is arranged in four rows in the vertical height direction of the column 1, the cross beam 2 and the column 1 are respectively bolted and fixed by the cross beam connecting member 3, the cross beams 2 are longitudinally connected by the sleeve 15, the base 4 is a "door" shape composed of welded steel plates, the columns 1 are arranged on the base 4 at intervals, and the bottom of the base 4 is welded to the bridge plate 13.

[0061] The vertical height of the side rib plate 11 is not less than the height of the second layer of cross beams 2 on the column 1 .

[0062] The collision surface of the cross beam 2 is flush with the front face of the base 4 .

[0063] The cross beam connecting member 3 is a rectangular tube, the cross beam 2 is welded to the plane of the rectangular tube, and the rectangular tube is fixed to the front fender 6 by bolting.

[0064] When the base 4 is a concrete structure, the anchor bolts 5 are anchored in the concrete base 4 , the bottom of the anchor bolts 5 does not penetrate into the bridge slab 13 , and is connected to the bridge slab 13 through the reserved steel bars 12 .

[0065] The material of the column 1, the beam 2, the beam connecting member 3 and the sleeve 15 is 700L alloy steel.

[0066] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A lightweight HA-grade high-strength steel guardrail structure, comprising a column (1), a beam (2), a beam connecting member (3), and a base (4), characterized in that: The column (1) is assembled by welding steel plates. The column (1) comprises a front wing plate (6), a rear wing plate (7), a web plate (8), a bottom plate (9), a stiffening rib plate (10), a side rib plate (11), and a corner rib (14). The stiffening rib plate (10) is in an "L" shape with an angled corner. Two sides of the stiffening rib plate (10) are welded at the vertical intersection of the front wing plate (6) and the bottom plate (9). Three corner ribs (14) are arranged at intervals at the angled position of the stiffening rib plate (10) and are staggered from the anchor bolt holes (17). The corner rib (14) is in a trapezoidal shape and a welding hole (16) is arranged at the bottom corner. The corner rib (14) is welded to the stiffening rib plate (10). The corner rib (14) is connected to the front wing plate (10). The wing plate (6) is at a vertical angle, the side rib plate (11) and the rear wing plate (7) are both in an inverted "L" shape with a folded angle, the side rib plate (11) and the front wing plate (6), the rear wing plate (7), the web plate (8), and the bottom plate (9) are respectively welded to form a closed surface, the cross beams (2) are arranged in four rows in the vertical height direction of the columns (1), the cross beams (2) and the columns (1) are respectively bolted and fixed through cross beam connecting members (3), the cross beams (2) are longitudinally connected through sleeves (15), the base (4) is a "door" shape composed of welded steel plates, the columns (1) are arranged on the base (4) at intervals, and the bottom of the base (4) is welded to the bridge plate (13).

2. A lightweight HA-grade high-strength steel guardrail structure according to claim 1, characterized in that: The vertical height of the side ribs (11) is flush with the height of the second-layer cross beams (2) on the columns (1).

3. A lightweight HA-grade high-strength steel guardrail structure according to claim 1, characterized in that: The collision surface of the crossbeam (2) is flush with the front of the base (4).

4. A lightweight HA-grade high-strength steel guardrail structure according to claim 1, characterized in that: The cross beam connecting member (3) is a channel steel, a flat plate or a rectangular tube. When the cross beam connecting member (3) is a channel steel, the column (1) is welded to the plane of the back of the channel steel, and the cross beam (2) is inserted into the opening at the front of the channel steel and fixed by bolting. When the cross beam connecting member (3) is a flat plate, the cross beam (2) is welded to the plane of the flat plate, and the flat plate is fixed to the front wing plate (6) by bolting. When the cross beam connecting member (3) is a rectangular tube, the cross beam (2) is welded to the plane of the rectangular tube, and the rectangular tube is fixed to the front wing plate (6) by bolting.

5. The lightweight HA-grade high-strength steel guardrail structure according to claim 1, characterized in that: When the column (1) is welded and arranged on the base (4), the bottom plate (9) is fitted with the base (4) on all sides, and the bottom plate is not provided with anchor bolt holes (17); when the column (1) and the base (4) are fixed by anchor bolts (5), the bottom plate is provided with anchor bolt holes (17), and corresponding anchor bolt holes (17) are also provided on the side rib plate (11); and hand holes (18) are provided on the back side of the base (4) at the position corresponding to each column (1), and are sealed by a sealing panel (19).

6. The lightweight HA-grade high-strength steel guardrail structure according to claim 1, characterized in that: When the base (4) is a concrete structure, the anchor bolts (5) are anchored in the concrete base (4), the bottom of the anchor bolts (5) does not penetrate into the bridge slab (13), and is connected to the bridge slab (13) via the reserved steel bars (12).

7. The lightweight HA-grade high-strength steel guardrail structure according to claim 1, characterized in that: The materials of the upright column (1), the crossbeam (2), the crossbeam connecting member (3), and the sleeve (15) are all 700L alloy steel.

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