Anchorage-free guardrail

Abstract

The utility model belongs to the technical field of highway safety protection equipment, specifically relates to a free anchoring guardrail, in the utility model, because the crossbeam adopts two clamping fixed plates to be clamped and fixed, and the bottom of clamping fixed plate is detachably arranged on the side surface of concrete base through bolt, therefore, the crossbeam and concrete base can be fixedly connected under the condition of different width, and the fixing mode of crossbeam has no limitation to the width of concrete base, can reduce the width of concrete base upper end while increasing the height of concrete base, and enhances the protection performance of concrete base whole.

Description

Technical Field

[0001] This utility model belongs to the technical field of highway safety protection equipment, specifically relating to an anchor-free guardrail. Background Technology

[0002] Highway guardrails are safety facilities installed on the edge of roads or in the median strip. Their main purpose is to prevent vehicles from running off the road after losing control and to reduce collision damage in the event of a traffic accident. Most existing guardrails are made of inelastic iron, which cannot absorb kinetic energy when colliding with a car and cannot buffer the impact force. The dynamic shear force experienced by the colliding vehicle is significant, easily causing serious damage and even injury or death to the occupants.

[0003] Chinese patent document CN221029799U (202322649913.3) discloses a permanent-temporary combined guardrail, including a concrete base, insertable posts, crossbeams, and connecting components. The concrete base is a precast reinforced concrete segment with C-shaped grooves at both ends, each containing an anchor bolt. The sides of both ends of the concrete base have plate-shaped grooves with through holes. Each segment of the concrete base is longitudinally assembled with bolts via connecting components. Positioning holes are spaced at the top of the concrete base, extending into the concrete base but not penetrating through it. The bottom of the insertable posts is inserted into the positioning holes at the top of the concrete base. The crossbeams are also segmented and fixed to the upper part of the insertable posts with connecting bolts. Each segment of the crossbeam is longitudinally assembled with bolts. A through drainage hole is provided at the bottom of the concrete base. This guardrail structure, through its upper and lower stiffness matching design, enables the single-beam combined permanent-temporary combined guardrail to meet safety protection requirements. However, the horizontal beam above the guardrail structure needs to be supported by inserting and removing posts. In order to set up positioning holes, the top of the concrete base must reserve a cross-sectional area of ​​sufficient size. The side walls of the concrete base are usually inclined surfaces. With the width of the concrete base limited both above and below, the height of the concrete base is also limited, resulting in low protective performance of the guardrail. Utility Model Content

[0004] The purpose of this invention is to design an anchor-free guardrail that uses a pair of clamping plates to fix the crossbeam above the concrete base and installs the clamping plates on the side of the concrete base. This solves the problem of the existing column structure limiting the width of the upper surface of the concrete base and helps to increase the protective height of the concrete base.

[0005] The technical problem to be solved by this utility model is achieved by the following technical solution: an anchor-free guardrail, comprising two or more concrete bases arranged linearly in the left and right direction, wherein the concrete bases are connected together by connecting components. A crossbeam is provided above the concrete base. The crossbeam is arranged linearly in the left-right direction. Both ends of the crossbeam are connected to the upper end of the concrete base by a pair of clamping and fixing plates. The ends of the crossbeam are located between two clamping and fixing plates, and the ends of the crossbeam are connected to the two clamping and fixing plates by bolts. The bottom of the clamping and fixing plates is detachably set on the side of the concrete base by bolts.

[0006] In a preferred embodiment of this utility model, the connecting member includes a reinforcing beam and a first connecting plate. The reinforcing beam is symmetrically arranged on the front and rear sides of the concrete base. Two or more concrete bases are arranged between a pair of reinforcing beams. The ends of the reinforcing beams are respectively connected to the concrete bases at both ends. Two adjacent reinforcing beams are connected by a first connecting plate, and both the first connecting plate and the reinforcing beams are bolted to the concrete base. By symmetrically arranging reinforcing beams on the front and rear sides of the concrete base, and connecting the ends of the reinforcing beams to the concrete bases at both ends, the overall impact resistance of the guardrail is increased while simultaneously fixing the concrete bases with the reinforcing beams. Furthermore, when there are three or more concrete bases, the concrete base between the two ends does not need to be connected to the reinforcing beams. Preferably, the crossbeam is made of structural steel; Preferably, the reinforcing beam is a steel section or a corrugated plate.

[0007] In a preferred embodiment of this invention, the connecting member includes a second connecting plate; Two adjacent concrete bases are connected by a second connecting plate. The two second connecting plates are positioned opposite each other on the front and rear sides of the concrete bases, and their ends are connected to the concrete bases by bolts. The second connecting plates further securely connect the two adjacent concrete bases, enhancing the overall strength of the guardrail and improving its impact resistance. The two second connecting plates, positioned opposite each other on the front and rear sides of the concrete bases, can be easily and quickly connected and fixed to the concrete bases using bolts.

[0008] In a preferred embodiment of this invention, the concrete base is provided with a first constant cross-section section, a first contraction cross-section section, a second constant cross-section section, a second contraction cross-section section, and a third constant cross-section section from top to bottom; The widths of the third section constant segment, the second section constant segment, and the first section constant segment decrease sequentially. The lower end of the clamping and fixing plate is connected to the first cross-section constant segment; The reinforcing beam is connected to the second constant section. The sides of the second and first constant sections are flat, facilitating the fixing and installation of the clamping plate, reinforcing beam, and bolts. The widths of the third, second, and first constant sections of the concrete base decrease sequentially, increasing the height of the concrete base while reducing the amount of concrete used. The first and second shrinking sections achieve a gradual transition in the cross-section of the concrete base, resulting in an aesthetically pleasing appearance. The lower end of the clamping plate is connected to the first constant section, reducing the distance between the two clamping plates. The reinforcing beam is connected to the second constant section and is positioned in the middle of the concrete base, ensuring high connection strength between the reinforcing beam and the concrete base and improving the impact resistance of the guardrail.

[0009] Preferably, in this invention, the third constant section is placed above the road surface or partially embedded below the road surface. When the anchorless guardrail is used temporarily, the third constant section can be placed above the road surface to facilitate the disassembly and relocation of the concrete base; when the anchorless guardrail is used for a long time, the third constant section is partially embedded below the road surface to improve the stability of the guardrail.

[0010] Preferably, the concrete base has a drainage hole extending through its width at the bottom. This drainage hole allows water to flow through, preventing water accumulation on one side of the concrete base due to uneven road surfaces.

[0011] Preferably, in this invention, anchor holes are provided at both ends of the concrete base, and the anchor holes are vertically penetrating. To further improve the impact resistance of the guardrail, anchor bolts or anchor rods can be used to anchor the concrete base, thereby fixing the concrete base to the road surface.

[0012] Preferably, in this invention, the lower end of the anchoring hole is located inside the drainage hole. Because the lower end of the anchoring hole is located inside the drainage hole, it facilitates the insertion and installation of the anchoring bolt or anchor rod.

[0013] Preferably, in this invention, two adjacent crossbeams are fixed using the same pair of clamping and fixing plates. Using the same pair of clamping and fixing plates to fix two adjacent crossbeams helps reduce the number of clamping and fixing plates required, while also enhancing the overall connection strength of the guardrail.

[0014] In a preferred embodiment of this utility model, the clamping and fixing plate includes a first clamping part, a bending part, and a second clamping part connected sequentially from top to bottom; The crossbeam is located between the first clamping parts, and the concrete base is located between the second clamping parts. Since the widths of the crossbeam and the concrete base are different, the first and second clamping parts are bent through a bending section to make the widths of the first and second clamping parts match those of the crossbeam and the concrete base, respectively.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: The anchor-free guardrail of this utility model includes two or more concrete bases arranged linearly in the left-right direction. The concrete bases are connected together by connecting components. A crossbeam is provided above the concrete bases. The crossbeam is arranged linearly in the left-right direction. The two ends of the crossbeam are respectively connected to the upper end of the concrete base by a pair of clamping and fixing plates. The ends of the crossbeam are respectively located between the two clamping and fixing plates. The ends of the crossbeam are connected to the two clamping and fixing plates by bolts. The bottom of the clamping and fixing plates is detachably set on the side of the concrete base by bolts. Since the crossbeam is clamped and fixed by two clamping and fixing plates, and the bottom of the clamping and fixing plates is set on the side of the concrete base, the crossbeam and the concrete base can be fixedly connected even when their widths are different. Moreover, the fixing method of the crossbeam is not limited by the width of the concrete base. It is possible to increase the height of the concrete base while reducing the width of the upper end of the concrete base, thereby enhancing the overall protective performance of the concrete base. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the anchor-free guardrail described in Embodiment 1 of this utility model; Figure 2 This is a cross-sectional view of the anchor-free guardrail described in Embodiment 1 of this utility model; Figure 3 This is a perspective view of the anchor-free guardrail described in Embodiment 1 of this utility model; Figure 4 This is a schematic diagram of the anchor-free guardrail described in Embodiment 2 of this utility model; In the figure, 1 is a concrete base, 2 is a crossbeam, 3 is a clamping and fixing plate, 4 is a reinforcing beam, 5 is a first connecting plate, and 6 is a second connecting plate; 11 First section constant segment, 12 First section contraction segment, 13 Second section constant segment, 14 Second section contraction segment, 15 Third section constant segment; 7 drainage holes, 100mm anchor holes; 31 First clamping part, 32 Bending part, 33 Second clamping part. Detailed Implementation

[0017] The technical solutions in the embodiments of this utility model will now be clearly and completely described in conjunction with the accompanying drawings.

[0018] In this embodiment, the bolt needs to be used in conjunction with the nut, which will not be described in detail here.

[0019] like Figures 1-3 As shown, an anchor-free guardrail includes two or more concrete bases 1 arranged linearly in the left-right direction, and the concrete bases 1 are connected together by connecting members.

[0020] like Figure 2 As shown, a steel frame is provided inside the concrete base 1, and the concrete base 1 is made of precast concrete.

[0021] like Figure 1 and Figure 3 As shown, a crossbeam 2 is provided above the concrete base 1. The crossbeam 2 is arranged linearly in the left-right direction, and both ends of the crossbeam 2 are connected to the upper end of the concrete base 1 by a pair of clamping and fixing plates 3. In this embodiment, the crossbeam 2 is a rectangular tube, square tube, or round tube, or it can be other profiles such as channel steel.

[0022] The ends of the crossbeam 2 are respectively located between the two clamping and fixing plates 3. The ends of the crossbeam 2 are connected to the two clamping and fixing plates 3 by bolts. The crossbeam 2 and the clamping and fixing plates 3 are provided with connecting through holes that match the bolts. The bottom of the clamping and fixing plates 3 is detachably set on the side of the concrete base 1 by bolts. The concrete base 1 and the clamping and fixing plates 3 are provided with connecting through holes that match the bolts.

[0023] The connecting component includes a reinforcing beam 4 and a first connecting plate 5. The reinforcing beam 4 is symmetrically arranged on the front and rear sides of the concrete base 1. Two or more concrete bases 1 are arranged between a pair of reinforcing beams 4, and the ends of the reinforcing beams 4 are respectively connected to the concrete bases 1 at both ends. In this embodiment, three concrete bases 1 are arranged between a pair of reinforcing beams 4, and the middle concrete base 1 is not connected to the reinforcing beam 4. In this embodiment, the reinforcing beam 4 is a rectangular tube or a square tube, or it can be a corrugated plate.

[0024] like Figure 1 and Figure 3 As shown, two adjacent reinforcing beams 4 are connected by a first connecting plate 5. The first connecting plate 5 and the reinforcing beams 4 are both connected to the concrete base 1 by bolts. The concrete base 1, the reinforcing beams 4 and the first connecting plate 5 are provided with connecting through holes that match the bolts.

[0025] The connecting component also includes a second connecting plate 6.

[0026] Two adjacent concrete bases 1 are connected by a second connecting plate 6. The two second connecting plates 6 are arranged opposite each other on the front and rear sides of the concrete base 1. The two ends of the second connecting plates 6 are connected to the concrete base 1 by bolts. The concrete base 1 and the second connecting plate 6 are provided with connecting through holes that match the bolts. In this embodiment, both the first connecting plate 5 and the second connecting plate 6 are made of sheet metal by stamping.

[0027] The concrete base 1 is provided with a first constant section 11, a first contraction section 12, a second constant section 13, a second contraction section 14, and a third constant section 15 from top to bottom.

[0028] The widths of the third cross-section constant segment 15, the second cross-section constant segment 13, and the first cross-section constant segment 11 decrease sequentially.

[0029] The lower end of the clamping and fixing plate 3 is connected to the first cross-section constant section 11, and the second connecting plate 6 is connected to the first cross-section constant section 11.

[0030] The reinforcing beam 4 is connected to the second cross-section constant segment 13.

[0031] The third cross-section constant segment 15 is placed above the road surface or partially embedded below the road surface.

[0032] The bottom of the concrete base 1 is provided with a drainage hole 7 extending through the width direction.

[0033] Anchor holes 100 are provided at both ends of the concrete base 1, and the anchor holes 100 are vertically penetrating.

[0034] The lower end of the anchor hole 100 is located inside the drainage hole 7.

[0035] The two adjacent crossbeams 2 are fixed by the same pair of clamping and fixing plates 3.

[0036] The clamping and fixing plate 3 includes a first clamping part 31, a bending part 32 and a second clamping part 33 connected sequentially from top to bottom.

[0037] The crossbeam 2 is located between the first clamping parts 31, and the concrete base 1 is located between the second clamping parts 33. The clamping and fixing plate 3 is made of pressed sheet metal.

[0038] Example 2 like Figure 4 As shown, the difference from Embodiment 1 is that the connecting member only includes the second connecting plate 6, which is disposed in the second cross-section constant section 13.

Claims

1. An anchor-free guardrail, characterized in that: It includes two or more concrete bases (1) arranged linearly in the left-right direction, and the concrete bases (1) are connected together by connecting members; A crossbeam (2) is provided above the concrete base (1). The crossbeam (2) is arranged linearly in the left and right direction. The two ends of the crossbeam (2) are respectively connected to the upper end of the concrete base (1) through a pair of clamping and fixing plates (3). The ends of the crossbeam (2) are located between two clamping plates (3). The ends of the crossbeam (2) are connected to the two clamping plates (3) by bolts. The bottom of the clamping plates (3) is detachably set on the side of the concrete base (1) by bolts.

2. The anchor-free guardrail according to claim 1, characterized in that: The connecting member includes a reinforcing beam (4) and a first connecting plate (5). The reinforcing beam (4) is symmetrically arranged on the front and rear sides of the concrete base (1). Two or more concrete bases (1) are arranged between a pair of reinforcing beams (4). The ends of the reinforcing beam (4) are respectively connected to the concrete bases (1) at both ends. The two adjacent reinforcing beams (4) are connected by a first connecting plate (5), and both the first connecting plate (5) and the reinforcing beams (4) are connected to the concrete base (1) by bolts.

3. The anchor-free guardrail according to claim 2, characterized in that: The crossbeam (2) is made of structural steel.

4. The anchor-free guardrail according to claim 2, characterized in that: The reinforcing beam (4) is a steel section or a corrugated plate.

5. The anchor-free guardrail according to claim 1 or 2, characterized in that: The connecting member includes a second connecting plate (6); Two adjacent concrete bases (1) are connected by a second connecting plate (6). The two second connecting plates (6) are arranged opposite each other on the front and rear sides of the concrete base (1). The two ends of the second connecting plate (6) are connected to the concrete base (1) by bolts.

6. The anchor-free guardrail according to claim 2, characterized in that: The concrete base (1) is provided with a first constant section (11), a first contraction section (12), a second constant section (13), a second contraction section (14), and a third constant section (15) from top to bottom. The widths of the third section constant segment (15), the second section constant segment (13), and the first section constant segment (11) decrease sequentially; The lower end of the clamping and fixing plate (3) is connected to the first cross-section constant segment (11); The reinforcing beam (4) is connected to the second section constant segment (13).

7. The anchor-free guardrail according to claim 6, characterized in that: The third section constant segment (15) is placed above the road surface or partially embedded below the road surface.

8. The anchor-free guardrail according to claim 1, characterized in that: The concrete base (1) has a drainage hole (7) extending through the bottom along the width direction.

9. The anchor-free guardrail according to claim 8, characterized in that: Anchor holes (100) are provided at both ends of the concrete base (1), and the anchor holes (100) are vertically penetrating.

10. The anchor-free guardrail according to claim 9, characterized in that: The lower end of the anchor hole (100) is located inside the drain hole (7).

11. The anchor-free guardrail according to claim 1, characterized in that: The two adjacent crossbeams (2) are fixed by the same pair of clamping and fixing plates (3).

12. The anchor-free guardrail according to claim 1, characterized in that: The clamping and fixing plate (3) includes a first clamping part (31), a bending part (32), and a second clamping part (33) connected sequentially from top to bottom. The crossbeam (2) is located between the first clamping parts (31), and the concrete base (1) is located between the second clamping parts (33).

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