CN215714324U

CN215714324U - Widened and spliced roadbed structure of roadbed

Info

Publication number: CN215714324U
Application number: CN202121464256.XU
Authority: CN
Inventors: 阿七约古
Original assignee: Guyuan Hongxiang Highway Engineering Co ltd
Current assignee: Guyuan Hongxiang Highway Engineering Co ltd
Priority date: 2021-06-30
Filing date: 2021-06-30
Publication date: 2022-02-01
Anticipated expiration: 2031-06-30

Abstract

The utility model discloses a roadbed widening spliced roadbed structure, and relates to the technical field of road paving. The road comprises an old road bed, a new road bed is spliced with the old road bed, the new road bed comprises a plain soil foundation, a gravel cushion layer is laid on the upper surface of the plain soil foundation, a large-particle gravel cushion layer is laid on the upper surface of the gravel cushion layer, a medium-particle gravel cushion layer is laid on the upper surface of the large-particle gravel cushion layer, a fine-particle gravel cushion layer is laid on the upper surface of the medium-particle gravel cushion layer, a concrete layer is laid on the upper surface of the fine-particle gravel cushion layer, an emulsified asphalt seal layer is laid on the upper surface of the concrete layer, a medium-particle asphalt layer is laid on the upper surface of the emulsified asphalt seal layer, and a fine-particle asphalt layer is laid on the upper surface of the medium-particle asphalt layer. According to the utility model, the multilayer cushion layers are arranged, so that the bearing capacity of the new roadbed is improved, the settlement deformation is prevented, the strength of the new roadbed is improved by arranging the vertical reinforcing ribs and the horizontal reinforcing ribs, and the pavement cracking is prevented.

Description

Widened and spliced roadbed structure of roadbed

Technical Field

The utility model belongs to the technical field of road paving, and particularly relates to a roadbed widening and splicing roadbed structure.

Background

Along with the development of economic level in China, the transportation industry is rapidly developed, highway transportation is used as an important component of transportation, the number of highway transportation is gradually increased, and along with the development of freight transportation, a road surface also needs to be expanded.

After the old roadbed is used for a long time, the settlement deformation reaches a stable state, however, the widened part can continue to settle and deform, so that the joint part of the new roadbed and the old roadbed cracks, and the use of the road is influenced.

In order to solve the problems, the utility model provides a roadbed widening and splicing roadbed structure.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a roadbed widening spliced roadbed structure, which solves the problems that settlement deformation of an existing old roadbed reaches a stable state after long-time use, but a widened part can continue to settle and deform, so that a joint part of a new roadbed and an old roadbed cracks, and the use of a road is influenced.

In order to solve the technical problems, the utility model is realized by the following technical scheme:

the utility model relates to a roadbed widening spliced roadbed structure which comprises an old roadbed, wherein the old roadbed is spliced with a new roadbed, the new roadbed comprises a plain soil foundation, a gravel cushion layer is laid on the upper surface of the plain soil foundation, a large-particle gravel cushion layer is laid on the upper surface of the gravel cushion layer, a medium-particle gravel cushion layer is laid on the upper surface of the large-particle gravel cushion layer, a fine-particle gravel cushion layer is laid on the upper surface of the medium-particle gravel cushion layer, a concrete layer is laid on the upper surface of the fine-particle gravel cushion layer, an emulsified asphalt seal layer is laid on the upper surface of the concrete layer, a medium-particle asphalt layer is laid on the upper surface of the emulsified asphalt seal layer, a fine-particle asphalt layer is laid on the upper surface of the medium-particle asphalt layer, and the bearing capacity of the new roadbed is improved and settlement deformation is prevented by arranging a plurality of cushion layers.

Preferably, be provided with vertical strengthening rib and horizontal strengthening rib in the concrete layer, vertical strengthening rib and horizontal strengthening rib fixed connection improve the intensity of new road bed through setting up vertical strengthening rib and horizontal strengthening rib, prevent the road surface fracture.

Preferably, the cross section of the old roadbed is in a step shape, the old roadbed and the new roadbed are spliced through a horizontal splicing surface and a vertical splicing surface, and the old roadbed provides a certain support for the new roadbed through a step-shaped connection mode.

Preferably, the left side surface of the old roadbed and the right side surface of the new roadbed are respectively provided with a curb stone, and vehicles are limited to run in the lane by the curb stones.

Preferably, the old roadbed and the new roadbed are provided with a water return slope, and the water return slope is arranged by reducing the height of the left side of the old roadbed and the height of the right side of the new roadbed, so that water drainage is facilitated.

Preferably, the medium-particle asphalt layer is AC-20C medium-particle asphalt concrete, the fine-particle asphalt layer is AC-13C fine-particle asphalt concrete, and the capacity of resisting damage of driving and natural factors to the road surface is improved through the medium-particle asphalt layer and the fine-particle asphalt layer.

Preferably, fly ash is laid among the large-particle gravel cushion layer, the medium-particle gravel cushion layer and the fine-particle gravel cushion layer, and gaps among the gravels are filled with the fly ash, so that the strength of the pavement is improved.

The utility model has the following beneficial effects:

the multi-layer cushion layer is arranged, so that the bearing capacity of a new roadbed is improved, the settlement deformation is prevented, the strength of the new roadbed is improved by arranging the vertical reinforcing ribs and the horizontal reinforcing ribs, the pavement cracking is prevented, the old roadbed provides a certain support for the new roadbed in a step-shaped connection mode, the vehicles are limited to run in the lane by arranging the curb stones, the left side height of the old roadbed and the right side height of the new roadbed are reduced, the reverse slope is arranged, the drainage is convenient, the capacity of resisting the damage of a running vehicle and natural factors to the pavement is improved by the middle particle asphalt layer and the fine particle asphalt layer, and the pavement strength is improved by filling gaps among broken stones with the fly ash.

Of course, it is not necessary for any product in which the utility model is practiced to achieve all of the above-described advantages at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic view of the right side overall structure of a roadbed widening spliced roadbed structure according to the utility model;

fig. 2 is a schematic view of the left-side overall structure of a roadbed widening spliced roadbed structure according to the utility model;

fig. 3 is a front view of a roadbed widening spliced roadbed structure according to the present invention;

fig. 4 is a top view of a roadbed widening spliced roadbed structure according to the present invention;

fig. 5 is a left side view of a roadbed widening spliced roadbed structure according to the present invention;

fig. 6 is a schematic view of the cross-sectional structure a-a in fig. 5.

In the drawings, the components represented by the respective reference numerals are listed below:

1. old roadbed; 2. a new roadbed; 201. a plain soil foundation; 202. a gravel cushion layer; 203. a large-particle gravel cushion layer; 204. a medium particle gravel cushion; 205. a fine particle gravel cushion; 206. a concrete layer; 207. sealing the emulsified asphalt layer; 208. a medium particle asphalt layer; 209. a fine particle asphalt layer; 3. a vertical reinforcing rib; 4. horizontal reinforcing ribs; 5. horizontally splicing the surfaces; 6. a vertical splicing surface; 7. a kerb stone.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "middle", "outer", "inner", and the like, indicate orientations or positional relationships, are used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referenced components or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Referring to fig. 1-6, the utility model relates to a roadbed widening spliced roadbed structure, which comprises an old roadbed 1, wherein a new roadbed 2 is spliced on the old roadbed 1, the new roadbed 2 comprises a plain soil foundation 201, a gravel cushion layer 202 is laid on the upper surface of the plain soil foundation 201, a large-particle gravel cushion layer 203 is laid on the upper surface of the gravel cushion layer 202, a medium-particle gravel cushion layer 204 is laid on the upper surface of the large-particle gravel cushion layer 203, a fine-particle gravel cushion layer 205 is laid on the upper surface of the medium-particle gravel cushion layer 204, a concrete layer 206 is laid on the upper surface of the fine-particle gravel cushion layer 205, an emulsified asphalt seal layer 207 is laid on the upper surface of the concrete layer 206, a medium-particle asphalt layer 208 is laid on the upper surface of the emulsified asphalt seal layer 207, a fine-particle asphalt layer 209 is laid on the upper surface of the medium-particle asphalt layer 208, and the bearing capacity of the new roadbed 2 is improved and the settlement deformation is prevented by arranging a plurality of cushion layers.

Be provided with vertical strengthening rib 3 and horizontal strengthening rib 4 in concrete layer 206,

vertical strengthening rib

3 and 4 fixed connection of horizontal strengthening rib improve new road bed 2's intensity through setting up vertical strengthening rib 3 and horizontal strengthening rib 4, prevent the road surface fracture.

The medium-particle asphalt layer 208 is AC-20C medium-particle asphalt concrete, the fine-particle asphalt layer 209 is AC-13C fine-particle asphalt concrete, and the ability of resisting driving and damage of natural factors to the road surface is improved through the medium-particle asphalt layer 208 and the fine-particle asphalt layer 209.

Fly ash is laid among the large-particle gravel cushion layer 203, the medium-particle gravel cushion layer 204 and the fine-particle gravel cushion layer 205, and gaps among the gravels are filled with the fly ash, so that the strength of the pavement is improved.

The cross section of the old roadbed 1 is in a step shape, the old roadbed 1 and the new roadbed 2 are spliced through a horizontal splicing surface 5 and a vertical splicing surface 6, and the old roadbed 1 provides certain support for the new roadbed 2 through a step-shaped connection mode.

And the left side surface of the old roadbed 1 and the right side surface of the new roadbed 2 are respectively provided with a curb 7, and the vehicles are limited to run in the lane by arranging the curb 7.

Old road bed 1 is provided with the anti-water slope with new road bed 2, through reducing old road bed 1 left side height and new road bed 2 right side height, sets up the anti-water slope, makes things convenient for the drainage.

As shown in fig. 1 to 6, the present embodiment is a roadbed widening spliced roadbed structure, and the basic principle of the present invention is as follows: the new roadbed 2 is provided with a plurality of cushion layers, the bearing capacity of the new roadbed 2 is improved, the settlement deformation is prevented, meanwhile, each cushion layer is compacted after the paving is finished, the large-particle gravel cushion layer 203, the medium-particle gravel cushion layer 204 and the fine-particle gravel cushion layer 205 are filled with pulverized coal ash, the strength of the new roadbed 2 is improved by the social group vertical reinforcing ribs 3 and the horizontal reinforcing ribs 4 in the concrete layer 206, the pavement cracking is prevented, the old roadbed 1 provides certain support for the new roadbed 2 through a step-shaped connection mode, the heights of the two sides of the pavement are lower than the height of the middle of the pavement, the curb 7 is arranged to limit vehicles to run in a lane by being inclined to the two sides.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the utility model disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the utility model to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, to thereby enable others skilled in the art to best utilize the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. The utility model provides a concatenation roadbed structure is widened to road bed, includes old road bed (1), its characterized in that: old road bed (1) concatenation has new road bed (2), new road bed (2) are including plain soil foundation (201), gravel bed course (202) is laid to the upper surface of plain soil foundation (201), large granule rubble bed course (203) has been laid to the upper surface of gravel bed course (202), granule rubble bed course (204) in having laid to the upper surface of large granule rubble bed course (203), fine grain rubble bed course (205) have been laid to the upper surface of well granule rubble bed course (204), concrete layer (206) has been laid to the upper surface of fine granule rubble bed course (205), emulsified asphalt seal (207) have been laid to the upper surface of emulsified asphalt seal (207), granule asphalt layer (208) in having laid to the upper surface of emulsified asphalt seal (207), fine granule asphalt layer (209) have been laid to the upper surface of well granule asphalt layer (208).

2. A roadbed widening spliced roadbed structure according to claim 1, wherein vertical reinforcing ribs (3) and horizontal reinforcing ribs (4) are arranged in the concrete layer (206), and the vertical reinforcing ribs (3) and the horizontal reinforcing ribs (4) are fixedly connected.

3. A roadbed widening spliced roadbed structure according to claim 1, wherein the cross section of the old roadbed (1) is stepped, and the old roadbed (1) is spliced with the new roadbed (2) through a horizontal splicing surface (5) and a vertical splicing surface (6).

4. A roadbed widening spliced roadbed structure according to claim 1, characterized in that the left side face of the old roadbed (1) and the right side face of the new roadbed (2) are respectively provided with a curb (7).

5. A roadbed widening spliced roadbed structure according to claim 1, characterized in that the old roadbed (1) and the new roadbed (2) are provided with a water-reversing slope.

6. The roadbed widening spliced roadbed structure according to claim 1, wherein the medium-particle asphalt layer (208) is AC-20C medium-particle asphalt concrete, and the fine-particle asphalt layer (209) is AC-13C fine-particle asphalt concrete.

7. The roadbed widening spliced roadbed structure according to claim 1, wherein fly ash is laid among the large-particle gravel cushion layer (203), the medium-particle gravel cushion layer (204) and the fine-particle gravel cushion layer (205).