Roadside low-reinforced concrete guardrail

Abstract

The utility model discloses a roadside low-reinforced concrete guardrail which comprises a guardrail body, and the guardrail body is connected with a base body arranged under the ground through a plurality of connecting parts. A plurality of transversely-arranged steel strands are distributed in the guardrail body and evenly distributed in the longitudinal direction of the guardrail body. The steel strands are arranged to replace a traditional steel reinforcement cage in concrete, the construction process is optimized, related construction of steel reinforcements is reduced during construction, and the construction efficiency can be improved; meanwhile, the guardrail body is connected with the base layer through the I-shaped steel, so that the stability of the guardrail body is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of highway traffic safety facilities, in particular to a roadside low-reinforced concrete guardrail. Background Art

[0002] Guardrails are the most important safety facilities on high-grade highways, which can effectively prevent vehicles from running off the road and reduce accident losses. However, due to the special road conditions of steep cliff sections of western mountainous highways, general highway guardrails are not adequate and cannot be used.

[0003] Traffic accidents in which large vehicles collide with the central divider guardrail and cross into the opposite lane will cause great social impact and losses. In order to further improve the ability to ensure safe operation of highways, more and more highways are equipped with concrete guardrails in the central divider.

[0004] However, a large number of steel bars are installed inside the traditional concrete guardrail, which has high construction costs and is difficult to ensure the accuracy of steel bar construction. Utility Model Content

[0005] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a low-reinforced concrete guardrail on the side of a road. By arranging steel strands instead of the steel cage in traditional concrete, the construction process is optimized, the related construction of steel bars is reduced during construction, and the construction efficiency is improved. At the same time, the guardrail body is connected to the base layer through an I-beam, which improves the stability of the guardrail body.

[0006] The purpose of this utility model is achieved through the following technical solutions:

[0007] A roadside low-reinforced concrete guardrail comprises a guardrail body, wherein the guardrail body is connected to a base disposed under the ground through a plurality of connecting parts;

[0008] A plurality of transversely arranged steel strands are distributed in the guardrail body, and the plurality of steel strands are evenly distributed along the longitudinal direction of the guardrail body.

[0009] Furthermore, the guardrail body is cast by concrete.

[0010] Furthermore, the substrate includes a surface layer, a first base layer and a bottom base layer arranged in sequence from top to bottom;

[0011] The connecting portion comprises a connecting piece arranged at the bottom of the guardrail body, a first end of the connecting piece extends into the guardrail body, and the other end of the connecting piece extends into the bottom base layer through the surface layer and the first base layer.

[0012] Furthermore, the connecting member comprises an I-beam, and stirrups are fixedly arranged on the outside of the I-beam.

[0013] Furthermore, the stirrups include two V-shaped steel bars, the two steel bars form a hoop, and the hoop is inserted into the I-beam and fixed to the I-beam.

[0014] Further, the base body includes a second base layer and a retaining wall arranged in the second base layer;

[0015] The connecting portion includes a base arranged at the bottom of the guardrail body, the cross-section of the base is L-shaped, the base is arranged on the retaining wall, and the base and the guardrail body are connected by reinforcing ribs.

[0016] Furthermore, the retaining wall is a mortar-laid rubble stone retaining wall.

[0017] The beneficial effects of the utility model are:

[0018] The utility model optimizes the construction process by arranging steel strands to replace the steel cage in traditional concrete, reduces the related construction of steel bars during construction, and is conducive to improving construction efficiency; at the same time, the guardrail body is connected to the base layer through the I-beam, which improves the stability of the guardrail body. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a cross-sectional view of a low-reinforced concrete guardrail on the road side in Example 1 of the utility model;

[0020] Figure 2 It is a side view of a low-reinforced concrete guardrail on the road side in Example 1 of the utility model;

[0021] Figure 3 A top view of a low-reinforced concrete guardrail on the road side in Example 1 of the utility model;

[0022] Figure 4 for Figure 3 An enlarged schematic diagram of the local A in the middle;

[0023] Figure 5 It is a cross-sectional view of the roadside low-reinforced concrete guardrail in the use state in Example 2 of the utility model;

[0024] Figure 6 It is a cross-sectional view of a low-reinforced concrete guardrail on the road side in Example 2 of the utility model;

[0025] Figure 7 It is a side view of a low-reinforced concrete guardrail on the road side in Example 2 of the utility model;

[0026] Figure 8 A top view of a low-reinforced concrete guardrail on the road side in Example 2 of the utility model;

[0027] In the figure, 1. guardrail body; 2. base; 3. steel strand; 4. surface layer; 5. first base layer; 6. bottom base layer; 7. I-beam; 8. stirrups; 9. second base layer; 10. retaining wall; 11. base; 12. reinforcing ribs. DETAILED DESCRIPTION

[0028] The following will be combined with the embodiments to clearly and completely describe the technical solution 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 of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0029] See also Figure 1-Figure 8 , the utility model provides a technical solution:

[0030] Embodiment 1:

[0031] like Figure 1-Figure 4 As shown, a roadside low-reinforced concrete guardrail comprises a guardrail body 1, wherein the guardrail body 1 is connected to a base 2 disposed under the ground through a plurality of connecting parts;

[0032] A plurality of transversely arranged steel strands 3 are distributed in the guardrail body 1 , and the plurality of steel strands 3 are evenly distributed along the longitudinal direction of the guardrail body 1 .

[0033] The guardrail body 1 is formed by pouring concrete.

[0034] like Figure 1 As shown, the substrate 2 includes a surface layer 4, a first base layer 5 and a bottom base layer 6 arranged in sequence from top to bottom;

[0035] like Figure 1-Figure 4 As shown, the connecting portion includes a connecting piece arranged at the bottom of the guardrail body 1, a first end of the connecting piece extends into the guardrail body 1, and the other end of the connecting piece extends into the bottom base layer 6 through the surface layer 4 and the first base layer 5.

[0036] The connecting member includes an I-beam 7, and a stirrup 8 is fixedly arranged on the outside of the I-beam 7. The stirrup 8 is a ribbed steel bar, which is inserted into the I-beam 7 and then tied and welded to the I-beam 7.

[0037] The stirrup 8 includes two V-shaped steel bars, and the two steel bars form a hoop, and the hoop is inserted into the I-beam 7 and fixed to the I-beam 7.

[0038] Among them, 1. The guardrail in this embodiment is a roadbed section guardrail, which is suitable for roadside concrete guardrails installed on roadbed sections. 2. The guardrail is constructed using a cast-in-place process, and it is recommended to use a slipform construction process to improve construction efficiency. 3. The thickness of the concrete protective layer on the front impact surface of the guardrail body 1 shall not be less than 4.5 cm. 4. A false seam is set every 4 m on the guardrail body 1. 5. The longitudinal spacing of the I-beam 7 steel piles is 200 cm, and the original guardrail columns can be cast in the concrete guardrail. 6. The steel strand 3 is a non-galvanized steel strand 3, and the technical parameters should meet the requirements of GB / T 5224-2014. 7. A PCV drainage pipe is provided in the retaining wall 10. 8. The steel strand 3 can be but is not limited to being set along the central axis of the guardrail body 1.

[0039] The utility model optimizes the construction process by arranging steel strands 3 to replace the steel cage in traditional concrete, reduces the related construction of steel bars during construction, and is beneficial to improving construction efficiency; at the same time, the guardrail body 1 is connected to the base layer through the I-beam 7, which improves the stability of the guardrail body 1.

[0040] Embodiment 2:

[0041] like Figure 5-Figure 8 As shown, the difference between this embodiment and embodiment 1 is that the base body 2 includes a second base layer 9 and a retaining wall 10 disposed in the second base layer 9;

[0042] The connecting portion includes a base 11 disposed at the bottom of the guardrail body 1 . The cross section of the base 11 is L-shaped. The base 11 is disposed on the retaining wall 10 . The base 11 is connected to the guardrail body 1 via a reinforcing rib 12 .

[0043] The retaining wall 10 is a mortar-laid rubble stone retaining wall 10 .

[0044] Among them, 1. This embodiment is applicable to the roadside concrete guardrails set on the retaining wall section. 2. The height of the mortar-laid stone retaining wall is 1.5m, of which 0.5m is buried in the soil and the remaining 1m is exposed. 3. The reinforcing ribs are steel bars.

[0045] The above is only a preferred embodiment of the utility model. It should be understood that the utility model is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not deviate from the spirit and scope of the utility model, and should be within the scope of protection of the claims attached to the utility model.

Claims

1. A roadside low-reinforced concrete guardrail, comprising a guardrail body, characterized in that: The guardrail body is connected to a base disposed under the ground through a plurality of connecting parts; A plurality of transversely arranged steel strands are distributed in the guardrail body, and the plurality of steel strands are evenly distributed along the longitudinal direction of the guardrail body; The guardrail body is cast by concrete; The substrate comprises a surface layer, a first base layer and a bottom base layer arranged in sequence from top to bottom; The connecting portion comprises a connecting piece arranged at the bottom of the guardrail body, a first end of the connecting piece extends into the guardrail body, and the other end of the connecting piece extends into the bottom base layer through the surface layer and the first base layer.

2. The low-reinforced concrete guardrail on the road side according to claim 1 is characterized by: The connecting piece comprises an I-beam, and stirrups are fixedly arranged on the outside of the I-beam.

3. The low-reinforced concrete guardrail on the road side according to claim 2 is characterized in that: The stirrups include two V-shaped steel bars, the two steel bars form a hoop, and the hoop is inserted into the I-beam and fixed to the I-beam.

4. The low-reinforced concrete guardrail on the road side according to claim 1 is characterized in that: The base body includes a second base layer and a retaining wall arranged in the second base layer; The connecting portion includes a base arranged at the bottom of the guardrail body, the cross-section of the base is L-shaped, the base is arranged on the retaining wall, and the base and the guardrail body are connected by reinforcing ribs.

5. The low-reinforced concrete guardrail on the road side according to claim 4 is characterized in that: The retaining wall is a mortar-laid rubble stone retaining wall.

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