Novel high-strength combined type medial strip guardrail structure

Abstract

The utility model discloses a novel high-strength combined type medial strip guardrail structure which is characterized in that the number of guardrails is two, the two guardrails are symmetrically arranged, and a supporting block is arranged between the guardrails; the bottom of the guardrail is leveled through the leveling layer. The guardrail comprises an upper steel structure unit and a lower concrete structure unit, and the lower concrete structure unit is connected with the road surface through a leveling layer; the concrete structure units of the guardrails on the two sides are connected through supporting blocks. The upper steel structure unit comprises cross beams and stand columns. The two cross beams are connected with the stand columns respectively. The scheme of the utility model can be used as a temporary safety facility to replace a movable steel guardrail, is used for one-way or two-way traffic isolation, gives consideration to the landscape effect, has stronger protection capability, can effectively reduce the risk that vehicles pass through the medial strip, can reduce the width of the medial strip by adjusting the guardrail structure, reducing the guardrail deformation and the like, and improves the traffic safety. The purposes of reducing road construction land and improving the land resource utilization rate are achieved.

Description

Technical Field

[0001] The utility model belongs to the field of highway traffic safety settings, and specifically relates to a novel high-strength combined central dividing belt guardrail structure. Background Art

[0002] In recent years, with the continuous growth of the total mileage of highways and the number of cars in my country, the problem of highway traffic safety has become increasingly prominent. Accidents in which vehicles collide with the central divider guardrail and rush into the opposite lane occur from time to time, which not only causes serious trauma to society and individual families, but also poses a huge threat to my country's highway development, people's livelihood and health, and social economy. The "14th Five-Year Plan" report also specifically pointed out the need to strengthen the safety of key sections of highways, especially for key sections such as highway collision central divider accidents and rapid growth in large vehicle traffic. Scientific evaluation and promotion of quality upgrade work will be carried out on the central divider guardrails.

[0003] At present, the guardrails of the central median of highways are mainly corrugated beam guardrails and concrete guardrails. Corrugated beam guardrails are semi-rigid guardrails with large deformation, and there is a high risk of large vehicles crossing the central median when an accident occurs; concrete guardrails are rigid guardrails, which will cause great damage to vehicles and drivers and passengers in the event of a traffic accident, and the landscape effect is poor. Summary of the invention

[0004] In order to solve the above-mentioned technical defects in the prior art, the utility model proposes a new type of high-strength combined central dividing strip guardrail structure, which, on the premise of meeting the requirements of the specifications, has the advantages of absorbing semi-rigid guardrails and rigid guardrails, reduces the risk of vehicles crossing the central dividing strip, improves road driving comfort, has strong protection capabilities and good landscape effects.

[0005] The technical solution to achieve the purpose of this utility model is:

[0006] A new type of high-strength combined central dividing strip guardrail structure, including guardrail, support block, leveling layer

[0007] There are two guardrails in total, which are symmetrically arranged, and a support block is arranged between the guardrails;

[0008] The bottom of the guardrail is leveled by a leveling layer;

[0009] The guardrail comprises an upper steel structure unit and a lower concrete structure unit;

[0010] The upper steel structure unit is connected to the lower concrete structure unit;

[0011] The lower concrete structure unit is connected to the road surface via a leveling layer;

[0012] The concrete structural units of the guardrails on both sides are connected by supporting blocks.

[0013] Furthermore, the upper steel structure unit includes beams and columns;

[0014] There are two cross beams, which are connected to the columns through bolts respectively.

[0015] Furthermore, the upper steel structure unit includes a beam, a column, and an L-shaped bracket;

[0016] There are two cross beams, which are connected to the columns through L-shaped brackets respectively.

[0017] Furthermore, a column flange is arranged in the lower concrete structure unit, and a foundation flange is arranged on the top of the lower concrete structure unit;

[0018] The upper steel structure unit is connected to the lower concrete structure unit through bolts and a foundation flange.

[0019] Furthermore, a column sleeve is provided in the lower concrete structure unit;

[0020] The upper steel structure unit is connected to the lower concrete structure unit through a column sleeve.

[0021] Furthermore, the crossbeam is a crossbeam with a rectangular cross section, and the shorter side of the cross section is connected to the column.

[0022] Furthermore, the crossbeam is a crossbeam with a rectangular cross section, the shorter side of the cross section is matched with the column, and the longer side of the cross section is matched with the upper surface of the L-shaped bracket and connected with bolts.

[0023] Furthermore, the columns are H-shaped steel columns or square tube steel columns.

[0024] Furthermore, the cross beams between the adjacent central median guardrail structures are connected by sleeves;

[0025] The lower concrete structure unit is provided with bolts, and the lower concrete structure units between adjacent central dividing zone guardrail structures are connected by bolts and channel steels.

[0026] Furthermore, the surface of the lower concrete structure unit facing the highway is a collision surface and is arranged in a single slope type.

[0027] Compared with the prior art, the utility model has the following significant advantages:

[0028] (1) The solution of the utility model can be used as a temporary safety facility to replace the mobile steel guardrail in the renovation and expansion project, and is used for one-way or two-way traffic isolation. While taking into account the landscape effect, it has a stronger protective ability and can effectively reduce the risk of vehicles crossing the central dividing strip;

[0029] (2) The solution of the utility model can reduce the width of the central dividing strip by adjusting the guardrail structure and reducing the deformation of the guardrail, thereby reducing the land used for highway construction and improving the utilization rate of land resources.

[0030] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the cross-sectional structure of the new high-strength combined central dividing zone guardrail structure in Example 1 of the utility model.

[0032] Figure 2 It is a schematic diagram of the structural elevation and plan view in Example 1 of the utility model.

[0033] Figure 3 This is a schematic diagram of the column structure in Example 1 of the utility model.

[0034] Figure 4 It is the elevation and plan view of the beam in Example 1 and Example 2 of the utility model.

[0035] Figure 5 This is a schematic diagram of the connection between the crossbeam and the column in Example 1 of the utility model.

[0036] Figure 6 This is a schematic diagram of the connection between the column and the concrete base in Example 1 of the utility model.

[0037] Figure 7 It is a schematic diagram of the elevation, plane and section of the concrete base part in Example 1 of the utility model.

[0038] Figure 8 It is a schematic diagram of the cross-sectional structure of the new high-strength combined central dividing zone guardrail structure in Example 2 of the utility model.

[0039] Fig. 9 It is a schematic diagram of the structural elevation and plan view in Example 2 of the utility model.

[0040] Fig.10 This is a schematic diagram of the column structure in Example 2 of the utility model.

[0041] Fig.11 This is a schematic diagram of the connection between the crossbeam and the column in Example 2 of the utility model.

[0042] Fig.12 This is a schematic diagram of the connection between the column and the concrete base in Example 2 of the utility model.

[0043] Fig.13 It is a schematic diagram of the elevation, plane and section of the concrete base part in Example 2 of the utility model. DETAILED DESCRIPTION

[0044] It is easy to understand that according to the technical solution of the utility model, without changing the essential spirit of the utility model, a person skilled in the art can imagine a variety of implementation methods of the utility model. Therefore, the following specific implementation methods and drawings are only exemplary descriptions of the technical solution of the present invention, and should not be regarded as the whole of the utility model or as a limitation or limitation of the technical solution of the utility model. On the contrary, the purpose of providing these embodiments is to enable those skilled in the art to understand the utility model more thoroughly. The preferred embodiments of the utility model are described in detail below in conjunction with the accompanying drawings, wherein the drawings constitute a part of this application and are used together with the embodiments of the utility model to illustrate the innovative concept of the present invention.

[0045] Example 1

[0046] Combination Figures 1 to 7 , a new type of high-strength combined central dividing strip guardrail structure, including a guardrail, a support block 9, and a leveling layer 10;

[0047] The central median guardrail structure is arranged in the middle of the highway and is used as a median guardrail;

[0048] There are two guardrails in total, which are symmetrically arranged and face the lanes on both sides of the highway respectively; a support block 9 is arranged between the guardrails;

[0049] The bottom of the guardrail is leveled by a leveling layer 10 .

[0050] Further, the guardrail includes an upper steel structure unit and a lower concrete structure unit 12;

[0051] The upper steel structure unit is connected to the lower concrete structure unit 12;

[0052] The lower concrete structure unit 12 is connected to the road surface via a leveling layer 10;

[0053] The concrete structural units 12 of the guardrails on both sides are connected by support blocks 9 .

[0054] Furthermore, the upper steel structure unit includes a beam 1 and a column 2;

[0055] There are two cross beams 1, each of which is provided with gourd-shaped bolt holes 5, which are connected to the columns 2 by bolts respectively;

[0056] The crossbeam 1 is a crossbeam with a rectangular cross section, and the shorter side of the cross section is connected to the column 2 to ensure the maximum bending strength of the crossbeam 1 in the force direction;

[0057] In this embodiment, the column 2 is an H-shaped steel column.

[0058] That is, two rectangular cross-section beams 1 and H-shaped steel columns 2 together form the upper steel structure of the high-strength combined central dividing zone guardrail;

[0059] A column flange 4 is provided in the lower concrete structure unit 12, and a foundation flange 3 is provided on the top of the lower concrete structure unit 12;

[0060] The upper steel structure unit is connected to the lower concrete structure unit 12 via U-bolts 8 and a foundation flange 3 .

[0061] In this embodiment, a plurality of median guardrail structures are connected to form a median of a highway, wherein:

[0062] The cross beams 1 between the adjacent central dividing strip guardrail structures are connected by sleeves 11 .

[0063] Furthermore, the lower concrete structure unit 12 is provided with bolts 7, and the lower concrete structure units 12 between adjacent central dividing zone guardrail structures are connected by bolts 7 and channel steels 6.

[0064] Furthermore, the surface of the lower concrete structure unit 12 facing the road is a collision surface, which is configured as a single slope.

[0065] Example 2

[0066] Combination Figures 8 to 13 as well as Figure 4 , a new type of high-strength combined central dividing strip guardrail structure, including a guardrail, a support block 9, and a leveling layer 10;

[0067] The central median guardrail structure is arranged in the middle of the highway and is used as a median guardrail. Two guardrails are arranged symmetrically and face the lanes on both sides of the highway respectively. A support block 9 is arranged between the guardrails.

[0068] The bottom of the guardrail is leveled by a leveling layer 10 .

[0069] The guardrail includes an upper steel structure unit and a lower concrete structure unit 12;

[0070] The upper steel structure unit is connected to the lower concrete structure unit 12;

[0071] The lower concrete structure unit 12 is connected to the road surface via a leveling layer 10;

[0072] The concrete structural units 12 of the guardrails on both sides are connected by support blocks 9 .

[0073] The upper steel structure unit includes a crossbeam 1, a column 2, and an L-shaped bracket 13;

[0074] There are two cross beams 1, which are connected to the columns 2 via L-shaped brackets 13 respectively. Compared with the connection method in Example 1, this solution has better construction convenience.

[0075] A column flange 4 is provided in the lower concrete structure unit 12, and a foundation flange 3 is provided on the top of the lower concrete structure unit 12;

[0076] The upper steel structure unit is connected to the lower concrete structure unit 12 through bolts and the foundation flange 3.

[0077] The column sleeve 14 is arranged in the lower concrete structure unit 12, and the upper steel structure unit is connected to the lower concrete structure unit 12 by implanting the column 2 into the column sleeve 14 and injecting cement mortar. Compared with the flange connection method in Example 1, the weld can be reduced to avoid errors caused by human factors in the production process, and the coordinated force of the upper and lower parts of the guardrail can be strengthened.

[0078] The crossbeam 1 is a crossbeam with a rectangular cross section, the shorter side of the cross section coincides with the column 2, and the longer side of the cross section coincides with the upper surface of the L-shaped bracket 3 and is connected with bolts to ensure the maximum bending strength of the crossbeam 1 in the force direction.

[0079] The column 2 is a square tube steel column. The H-shaped column used in Example 1 has better bending resistance and bearing capacity, but has more welds. The square tube column used in this embodiment is made of bent and welded steel plates, has fewer welds, and the rectangular tube structure has better shear resistance.

[0080] In this embodiment, a plurality of median guardrail structures are connected to form a median of a highway, wherein:

[0081] The cross beams 1 between the adjacent central dividing strip guardrail structures are connected by sleeves 11 .

[0082] Furthermore, the lower concrete structure unit 12 is provided with bolts 7, and the lower concrete structure units 12 between adjacent central dividing zone guardrail structures are connected by bolts 7 and channel steels 6.

[0083] Furthermore, the surface of the lower concrete structure unit 12 facing the road is a collision surface, which is configured as a single slope.

[0084] The above embodiments show and describe the basic principles and main features of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the present invention, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the invention claimed for protection.

Claims

1. A new type of high-strength combined central dividing belt guardrail structure, characterized in that: It includes a guardrail, a support block (9), and a leveling layer (10) There are two guardrails in total, which are symmetrically arranged, and a support block (9) is arranged between the guardrails; The bottom of the guardrail is leveled by a leveling layer (10); The guardrail comprises an upper steel structure unit and a lower concrete structure unit (12); The upper steel structure unit is connected to the lower concrete structure unit (12); The lower concrete structure unit (12) is connected to the road surface via a leveling layer (10); The concrete structural units (12) of the guardrails on both sides are connected via support blocks (9).

2. The novel high-strength combined central dividing strip guardrail structure according to claim 1 is characterized in that: The upper steel structure unit comprises a crossbeam (1) and a column (2); There are two cross beams (1) in total, which are respectively connected to the upright posts (2) via bolts.

3. The new high-strength combined central dividing strip guardrail structure according to claim 1 is characterized in that: The upper steel structure unit comprises a crossbeam (1), a column (2), and an L-shaped bracket (13); There are two cross beams (1) in total, which are connected to the upright posts (2) via L-shaped brackets (13) respectively.

4. The novel high-strength combined central dividing strip guardrail structure according to claim 2 or 3 is characterized in that: A column flange (4) is arranged in the lower concrete structure unit (12), and a foundation flange (3) is arranged on the top of the lower concrete structure unit (12); The upper steel structure unit is connected to the lower concrete structure unit (12) via bolts and a foundation flange (3).

5. The novel high-strength combined central dividing strip guardrail structure according to claim 2 or 3 is characterized in that: A column sleeve (14) is arranged in the lower concrete structure unit (12); The upper steel structure unit is connected to the lower concrete structure unit (12) via a column sleeve (14).

6. The novel high-strength combined central dividing strip guardrail structure according to claim 2 is characterized in that: The crossbeam (1) is a crossbeam with a rectangular cross section, and the shorter side of the cross section is connected to the column (2).

7. The novel high-strength combined central dividing strip guardrail structure according to claim 3 is characterized in that: The crossbeam (1) is a crossbeam with a rectangular cross section, the shorter side of the cross section is matched with the column (2), and the longer side of the cross section is matched with the upper surface of the L-shaped bracket (13) and connected with bolts.

8. The novel high-strength combined central dividing strip guardrail structure according to claim 2 is characterized in that: The columns (2) are H-shaped steel columns or square tube steel columns.

9. The novel high-strength combined central dividing strip guardrail structure according to claim 2 is characterized in that: The crossbeams (1) between adjacent central median guardrail structures are connected via sleeves (11); The lower concrete structure unit (12) is provided with bolts, and the lower concrete structure units (12) between adjacent central dividing strip guardrail structures are connected via bolts and channel steels (6).

10. The novel high-strength combined central dividing strip guardrail structure according to claim 1 is characterized in that: The surface of the lower concrete structure unit (12) facing the road is a collision surface and is configured as a single slope.

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