CN209907134U

CN209907134U - Roadbed widening structure

Info

Publication number: CN209907134U
Application number: CN201920034792.2U
Authority: CN
Inventors: 李海樑
Original assignee: Hunan Huada Engineering Co Ltd
Current assignee: Hunan Huada Engineering Co Ltd
Priority date: 2019-01-09
Filing date: 2019-01-09
Publication date: 2020-01-07
Anticipated expiration: 2029-01-09

Abstract

The utility model discloses a roadbed widening structure, which belongs to the technical field of roadbeds and comprises an old roadbed and a new roadbed, wherein a step is arranged between the old roadbed and the new roadbed, the step comprises a vertical surface and a horizontal surface, and further comprises a U-shaped hook, a vertical reinforcing rib, a horizontal reinforcing rib and a waterproof layer, the U-shaped hook is positioned on the horizontal surface of the step, the lower end of the U-shaped hook is fixed in the old roadbed, and the upper end of the U-shaped hook is embedded in the new roadbed; vertical strengthening rib is fixed in the new road bed, horizontal strengthening rib sets up the step vertical face go up and one end is pre-buried in the new road bed, the other end passes the waterproof layer just fixes in the old road bed, the waterproof layer is located the step vertical face is gone up and is fixed new road bed with between the old road bed, solved current road bed widen transformation in-process, the relatively poor problem of road bed overall stability.

Description

Roadbed widening structure

Technical Field

The utility model relates to a road bed technical field, in particular to structure is widened to road bed.

Background

With the rapid development of socioeconomic in China, most of the functions of the conventional common roads cannot meet the increasing traffic needs of the society, so that the conventional low-standard roads are inevitably upgraded and reformed. The key of the engineering reconstruction is the widening of the highway subgrade, no matter the design or the construction. After many years of traffic, subgrade settlement is basically completed, and cracks represented by longitudinal cracks are inevitably generated in the widening section of the subgrade due to uneven settlement of a new subgrade and an old subgrade, so that the highway is damaged. Therefore, design optimization and construction quality during highway subgrade widening must be enhanced, and settlement is reduced to the minimum so as to ensure the quality of the highway.

In the existing roadbed widening and transformation process, steps are usually dug at the joint of a new roadbed and an old roadbed, the new roadbed is paved and sufficiently compacted, and the settlement can be reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a structure is widened to road bed, it has solved current road bed widening transformation in-process, the relatively poor problem of road bed overall stability.

The above technical purpose of the present invention can be achieved by the following technical solutions:

a roadbed widening structure comprises an old roadbed and a new roadbed, wherein a step is arranged between the old roadbed and the new roadbed, the step comprises a vertical surface and a horizontal surface, the roadbed widening structure further comprises a U-shaped hook, a vertical reinforcing rib, a horizontal reinforcing rib and a waterproof layer, the U-shaped hook is positioned on the horizontal surface of the step, the lower end of the U-shaped hook is fixed in the old roadbed, and the upper end of the U-shaped hook is embedded in the new roadbed;

the vertical strengthening rib is fixed in the new road bed, horizontal strengthening rib sets up the step vertical face is gone up and one end is pre-buried in the new road bed, and the other end passes the waterproof layer just fixes in the old road bed, the waterproof layer is located the step vertical face is gone up and is fixed new road bed with between the old road bed.

By adopting the structure, the U-shaped hooks and the horizontal reinforcing ribs are arranged, so that the connection strength of the new roadbed and the old roadbed is improved, the overall stability is good, and longitudinal cracks are prevented from being generated on a joint surface. The setting of vertical strengthening rib has improved the stability of new road bed inner structure, reduces and subsides, avoids appearing diseases such as collapsing, subsidence. The waterproof layer can play a better waterproof role, prevents that the faying face of new road bed and old road bed from receiving the rainwater erosion, improves the stability of road bed inner structure, long service life, durable.

The method is further optimized as follows: still include water drainage tank, stone-laying layer and water barrier, the stone-laying layer is laid on the new roadbed side slope, the water barrier is located the stone-laying layer with between the new roadbed, the water drainage tank is located new roadbed side slope bottom, stone-laying layer bottom is located the water drainage tank top.

By adopting the structure, the waterproof layer can play a good waterproof role, so that rainwater on the slope surface of the new roadbed edge is prevented from permeating into the new roadbed, and the stability of the internal structure of the new roadbed is improved. The stone layer plays the effect of domatic protection and water guide drainage, is convenient for with in the leading-in water drainage tank of rainwater.

The method is further optimized as follows: the water-resisting layer is a compact rock layer.

By adopting the structure, the construction is convenient, the water-resisting effect is good, and the cost is lower.

The method is further optimized as follows: the novel roadbed comprises an upper base layer and a lower base layer positioned below the upper base layer, the lower ends of the vertical reinforcing ribs are fixed in the lower base layer, and the upper ends of the vertical reinforcing ribs are embedded in the upper base layer.

By adopting the structure, the internal integral structure of the new roadbed is stable.

The method is further optimized as follows: the waterproof layer is an asphalt waterproof layer.

By adopting the structure, the construction is convenient, the waterproof effect is good, and the cost is lower.

The method is further optimized as follows: the bottom and the inner wall of the drainage tank are coated with impermeable layers which are mortar waterproof agents.

Adopt above-mentioned structure, prevent that the rainwater from permeating to the drain tank is all around.

To sum up, the utility model discloses following beneficial effect has: the U-shaped hook and the horizontal reinforcing rib are arranged, so that the connection strength of the new roadbed and the old roadbed is improved, the overall stability is good, and longitudinal cracks are prevented from being generated on a joint surface. The setting of vertical strengthening rib has improved the stability of new road bed inner structure, reduces and subsides, avoids appearing diseases such as collapsing, subsidence. Waterproof layer and water barrier can play better waterproof role, avoid the faying face of new road bed and old road bed to receive the rainwater erosion, avoid simultaneously that the rainwater on the domatic new road bed limit permeates inside the new road bed, improve the stability of new road bed inner structure, long service life, durable.

Drawings

Fig. 1 is a schematic partial cross-sectional view of an embodiment, which is mainly used for embodying a roadbed structure.

In the figure, 1, old road base; 2. a road bed; 3. a new roadbed; 31. an upper base layer; 32. a lower base layer; 4. a step; 41. a vertical plane; 42. a horizontal plane; 5. a U-shaped hook; 6. building a stone layer; 7. a water barrier layer; 8. a vertical reinforcing rib; 9. horizontal reinforcing ribs; 10. a water discharge tank; 11. an impermeable layer; 12. and a waterproof layer.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example (b): a roadbed widening structure is shown in figure 1 and comprises an old roadbed 1, a new roadbed 3, U-shaped hooks 5, vertical reinforcing ribs 8, horizontal reinforcing ribs 9, a waterproof layer 12, drainage channels 10, a stone layer 6, a water-resisting layer 7 and a roadbed 2 positioned at the bottom of the new roadbed 3 and the bottom of the old roadbed 1. The combination surface of the old roadbed 1 and the new roadbed 3 is dug with a step 4, and the step 4 comprises a vertical surface 41 and a horizontal surface 42. The U-shaped hooks 5 are located on the horizontal plane 42 of the step 4, the lower end of each U-shaped hook is fixed in the old roadbed 1, the upper end of each U-shaped hook is embedded in the new roadbed 3, the junction surface of the old roadbed 1 and the new roadbed 3 is provided with a plurality of steps 4, each horizontal plane 42 of each step 4 is provided with a plurality of U-shaped hooks 5, and the plurality of U-shaped hooks 5 are arranged along the length direction of the roadbed.

Referring to fig. 1, vertical reinforcing bars 8 are fixed in a new roadbed 3, the new roadbed 3 includes an upper base layer 31 and a lower base layer 32 located below the upper base layer 31, the lower ends of the vertical reinforcing bars 8 are fixed in the lower base layer 32, and the upper ends thereof are embedded in the upper base layer 31. The horizontal reinforcing ribs 9 are arranged on the vertical surfaces 41 of the uppermost step 4 and the lowermost step 4, one end of each horizontal reinforcing rib is embedded in the new roadbed 3, and the other end of each horizontal reinforcing rib penetrates through the waterproof layer 12 and is fixed in the old roadbed 1. The waterproof layer 12 is positioned on the vertical surface 41 of the step 4 and fixed between the new roadbed 3 and the old roadbed 1, and the waterproof layer 12 is an asphalt waterproof layer. The rubble layer 6 is laid on 3 side slopes of new road bed, and the water barrier 7 is located between rubble layer 6 and new roadbed 3, and water barrier 7 is tight rock layer, and rubble layer 6 and water barrier 7 all follow 3 side slopes domatic settings of new roadbed. The water drainage tank 10 is arranged on the upper portion of the roadbed 2 and located at the bottom of the slope of the new roadbed 3, the bottom of the stone masonry layer 6 is located above the water drainage tank 10, the bottom and the inner wall of the water drainage tank 10 are both coated with the impermeable layer 11, and the impermeable layer 11 is a mortar waterproof agent.

The U-shaped hook 5 and the horizontal reinforcing ribs 9 are arranged, so that the connection strength of the new roadbed 3 and the old roadbed 1 is improved, the overall stability is good, and longitudinal cracks are prevented from being generated on a joint surface. The setting of vertical strengthening rib 8 has improved the stability of 3 inner structure in new roadbed, reduces and subsides, avoids appearing diseases such as collapsing, subsidence. The waterproof layer 12 and the waterproof layer 7 can play a good waterproof role, the bonding surface of the new roadbed 3 and the old roadbed 1 is prevented from being corroded by rainwater, meanwhile, rainwater on the slope surface of the new roadbed 3 is prevented from penetrating into the new roadbed 3, and the stability of the internal structure of the new roadbed 3 is improved.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Claims

1. The utility model provides a structure is widened to road bed, includes old road bed (1) and new road bed (3), old road bed (1) with be provided with step (4) between new road bed (3), step (4) are including vertical face (41) and horizontal plane (42), characterized by: the novel roadbed further comprises a U-shaped hook (5), a vertical reinforcing rib (8), a horizontal reinforcing rib (9) and a waterproof layer (12), wherein the U-shaped hook (5) is positioned on the horizontal plane (42) of the step (4), the lower end of the U-shaped hook is fixed in the old roadbed (1), and the upper end of the U-shaped hook is embedded in the new roadbed (3);

vertical strengthening rib (8) are fixed in new road bed (3), horizontal strengthening rib (9) set up step (4) vertical face (41) go up and one end is pre-buried in new road bed (3), the other end passes waterproof layer (12) and fix in old road bed (1), waterproof layer (12) are located step (4) vertical face (41) go up and fix new road bed (3) with between the old road bed (1).

2. A roadbed widening structure according to claim 1, characterized in that: still include drainage channel (10), masonry layer (6) and water barrier (7), masonry layer (6) are laid on new road bed (3) side slope, water barrier (7) are located masonry layer (6) with between new road bed (3), drainage channel (10) are located new road bed (3) side slope bottom, masonry layer (6) bottom is located drainage channel (10) top.

3. A roadbed widening structure according to claim 2, characterized in that: the water-resisting layer (7) is a compact rock layer.

4. A roadbed widening structure according to claim 1, characterized in that: new road bed (3) include upper basic level (31) and be located lower basic level (32) of upper basic level (31) below, vertical strengthening rib (8) lower extreme is fixed in lower basic level (32), the upper end is pre-buried in upper basic level (31).

5. A roadbed widening structure according to claim 1, characterized in that: the waterproof layer (12) is an asphalt waterproof layer.

6. A roadbed widening structure according to claim 2, characterized in that: the bottom and the inner wall in the drainage channel (10) are coated with an impermeable layer (11), and the impermeable layer (11) is a mortar waterproof agent.