CN211256522U

CN211256522U - Highway subgrade structure capable of preventing subgrade from softening

Info

Publication number: CN211256522U
Application number: CN201921497162.5U
Authority: CN
Inventors: 不公告发明人
Original assignee: Hunan Zhengbang Construction Engineering Co ltd
Current assignee: Hunan Zhengbang Construction Engineering Co ltd
Priority date: 2019-09-07
Filing date: 2019-09-07
Publication date: 2020-08-14
Anticipated expiration: 2029-09-07

Abstract

The utility model discloses a can prevent highway roadbed structure that road bed is softened, including soil layer, soil layer's inside embedding has concrete column, the inside central position department embedding of concrete column has two strengthening steel bars, and runs through between the inside of concrete column is close to two strengthening steel bars and has connecting reinforcement. This can prevent soft highway roadbed structure of road bed, cross slab and vertical partition in through the geogrid carry out regional separation with the intraformational gravel and sand of first gravel and sand bed course and second gravel and sand bed course, play and carry out spacing constraint with the intraformational gravel and sand in the road bed, thereby avoid the loose structure of gravel and sand, the drain bar is effectual to leave the highway roadbed with rainwater, avoid dirt bed contact rainwater infiltration to cause the soft problem of road bed, improve the structural strength of road bed, it is spacing to carry out the level with dirt bed through the intraformational concrete column of earth, avoid the deformation rate that dirt bed takes place under heavy pressure, further the structural strength of improvement road bed.

Description

Highway subgrade structure capable of preventing subgrade from softening

Technical Field

The utility model relates to a road bed technical field specifically is a can prevent highway roadbed structure that the road bed softens.

Background

The roadbed is a strip structure built according to the position of a route and certain technical requirements and used as a pavement foundation, is the foundation of a railway and a highway, is a linear structure built by soil or stones, is built under good geological, hydrological and climatic conditions, and can be divided into three types of roadbed, namely an earth roadbed, a stone roadbed and an earth-stone roadbed from the aspect of materials, the roadbed has various different cross sections according to the difference of the filling height and the terrain where the roadbed is located, and the roadbed design mainly comprises roadbed body engineering design, roadbed protection and reinforcement engineering design and roadbed retaining engineering design.

However, current highway subgrade can cause the inside infiltration of subgrade under long-term the use, reduces the hardness of subgrade to cause the subgrade to soften the structural strength who reduces highway subgrade, the easy appearance of gravel and sand layer in the subgrade collapses, thereby causes the subgrade roughness to reduce easily, in addition, the both sides of subgrade lack effectual support.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a can prevent highway roadbed structure that the road bed softens to it appears softening and collapses, the problem of the structure reinforce easily to provide current highway roadbed in solving above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a highway roadbed structure capable of preventing roadbed softening comprises a soil layer, wherein a concrete column is embedded in the soil layer, two reinforcing steel bars are embedded in the central position of the inner part of the concrete column, a connecting steel bar penetrates through the position, close to the position between the two reinforcing steel bars, of the inner part of the concrete column, a protective base plate is welded at one end of the connecting steel bar, a drainage plate is laid at the top of the soil layer, a drainage pipe is fixedly connected onto the outer wall of one side of the drainage plate through a bolt, a drainage groove is formed in the position, close to the lower position of the drainage pipe, of the top of the protective base plate, a drainage hole is formed in the top of the drainage plate, a first gravel cushion layer is laid at the top of the first gravel cushion layer, a geogrid is laid at the top of the geogrid, a second gravel cushion layer is laid at the top of the geogrid, and the concrete layer is poured at, the outer wall of one side of the geogrid is fixedly connected with a transverse partition plate through bolts, and the outer wall of one side, adjacent to the transverse partition plate, of the geogrid is fixedly connected with a longitudinal partition plate through bolts.

Preferably, the diaphragm and the longitudinal diaphragm are crossed.

Preferably, the concrete columns are provided with five, and the five concrete columns are uniformly arranged inside the soil layer.

Preferably, the protective substrate is a triangular prism, and the protective substrate and the soil layer are matched with each other.

Preferably, the number of the protection substrates is two, and the two protection substrates are symmetrically arranged at two ends of the connecting steel bar.

Preferably, the mud layer, the drainage plate, the first sand and stone cushion layer, the geogrid, the second sand and stone cushion layer and the concrete layer are all of a step body structure.

Compared with the prior art, the beneficial effects of the utility model are that: this can prevent soft highway roadbed structure of road bed, cross slab and vertical partition in through the geogrid carry out regional separation with the intraformational gravel and sand of first gravel bed course and second gravel bed course, play and carry out spacing constraint with the intraformational gravel and sand of different regions in the road bed, thereby avoid the gravel and sand loose to make, the drain bar is effectual to leave the highway roadbed with the rainwater, avoid dirt bed contact rainwater infiltration to cause the problem that the road bed is softened, improve the structural strength of road bed, it is spacing to carry out the level with dirt bed through the intraformational concrete column of earth, avoid the deformation rate that dirt bed takes place under the heavy pressure, further improve the structural strength of road bed, in addition, can be fine support the highway roadbed through the protection base plate of road bed both sides, further improve the structural strength of road bed.

Drawings

Fig. 1 is a front view of the present invention;

FIG. 2 is a top view of the drain board of the present invention;

fig. 3 is a top view of the present invention;

fig. 4 is a top view of the geogrid of the present invention.

In the figure: 1. a layer of clay; 2. a concrete column; 3. reinforcing steel bars; 4. connecting reinforcing steel bars; 5. a protective substrate; 6. a drain plate; 7. a drain pipe; 8. a drainage gutter; 9. a drain hole; 10. a first sand bed; 11. a geogrid; 12. a second sand bed course; 13. a concrete layer; 14. a diaphragm plate; 15. a longitudinal partition plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: a highway roadbed structure capable of preventing roadbed softening comprises a soil layer 1, a concrete column 2 is embedded in the soil layer 1, two reinforcing steel bars 3 are embedded in the central position inside the concrete column 2, a connecting steel bar 4 penetrates through the position, close to the position between the two reinforcing steel bars 3, inside the concrete column 2, a protective base plate 5 is welded at one end of the connecting steel bar 4, a drainage plate 6 is laid at the top of the soil layer 1, a drainage pipe 7 is fixedly connected to the outer wall of one side of the drainage plate 6 through a bolt, a drainage groove 8 is formed in the position, close to the lower position of the drainage pipe 7, of the top of the protective base plate 5, a drainage hole 9 is formed in the top of the drainage plate 6, a first sand cushion layer 10 is laid at the top of the drainage plate 6, a geogrid 11 is laid at the top of the first sand cushion layer 10, a second sand cushion layer 12 is laid at the top of the geogrid 11, a concrete layer 13 is poured at, a transverse partition plate 14 is fixedly connected to the outer wall of one side of the geogrid 11 through bolts, and a longitudinal partition plate 15 is fixedly connected to the outer wall of one side of the geogrid 11, which is adjacent to the transverse partition plate 14, through bolts.

The utility model discloses in: the diaphragm plate 14 and the longitudinal diaphragm plate 15 are crossed; the sand and stones in the first sand and stone cushion layer 10 and the second sand and stone cushion layer 12 are convenient to limit, and collapse and softening are avoided.

The utility model discloses in: the concrete columns 2 are arranged in five, and the five concrete columns 2 are uniformly arranged inside the soil layer 1; the stability and firmness of the soil layer 1 are ensured.

The utility model discloses in: the protective substrate 5 is a triangular prism, and the protective substrate 5 is matched with the soil layer 1; serving to support the soil layer 1.

The utility model discloses in: the number of the protective substrates 5 is two, and the two protective substrates 5 are symmetrically arranged at two ends of the connecting steel bar 4; the two sides of the soil layer 1 are supported in a limiting way.

The utility model discloses in: the mud layer 1, the drainage plate 6, the first sand and stone cushion layer 10, the geogrid 11, the second sand and stone cushion layer 12 and the concrete layer 13 are all in a ladder-shaped structure; the structural strength of the soil layer 1, the drainage plate 6, the first sand and stone cushion layer 10, the geogrid 11, the second sand and stone cushion layer 12 and the concrete layer 13 is improved.

The working principle is as follows: the method comprises the steps of forming a groove in a soil layer 1, pouring concrete into the groove to form a concrete column 2, enabling a connecting reinforcing bar 4 to penetrate through the concrete column 2 to achieve connection and fixation of a plurality of concrete columns 2, sequentially paving a drainage plate 6, a first sand and stone cushion layer 10, a geogrid 11, a second sand and stone cushion layer 12 and a concrete layer 13 on the top of the soil layer 1, enabling accumulated water on a road to be gathered above the drainage plate 6 through the first sand and stone cushion layer 10 and the second sand and stone cushion layer 12 through water flow permeability of the first sand and stone cushion layer 10 and the second sand and stone cushion layer 12, enabling the accumulated water to enter the drainage plate 6 under dredging of a drainage hole 9, finally discharging the accumulated water through a drainage pipe 7, enabling the discharged rainwater to drip on a protective base plate 5, enabling a drainage groove 8 on the protective base plate 5 to guide the rainwater to leave a road bed so as to avoid the problem of structural strength reduction of the road bed caused by softening of the road bed, and separating sand and stones into different small cavities through a transverse partition plate 14 and a longitudinal partition plate 15 in the, thereby avoiding the problem of subgrade softening caused by the loose sand and stone and improving the structural strength of the subgrade.

In summary, the following steps: this can prevent highway roadbed softened roadbed structure, cross slab 14 and longitudinal baffle 15 through in the geogrid 11 carry out regional separation with the gravel in first gravel cushion layer 10 and the second gravel cushion layer 12, play and carry out spacing constraint with different regional gravel in the road bed, thereby avoid gravel and sand loose to make, drain bar 6 is effectual to discharge the rainwater away from highway roadbed, avoid the problem that dirt bed 1 contact rainwater infiltration leads to the fact the road bed to soften, improve the structural strength of road bed, it is spacing to carry out the level with dirt bed 1 through concrete column 2 in dirt bed 1, avoid the deformation rate that dirt bed 1 takes place under the heavy pressure, further improve the structural strength of road bed, in addition, can be fine support highway roadbed through the protection base plate 5 of road bed both sides, further improve the structural strength of road bed.

Claims

1. The utility model provides a can prevent softened highway roadbed structure of road bed, includes loam layer (1), its characterized in that: the concrete column (2) is embedded in the soil layer (1), two reinforcing steel bars (3) are embedded in the central position of the inner part of the concrete column (2), connecting steel bars (4) penetrate through the position, close to the two reinforcing steel bars (3), of the inner part of the concrete column (2), a protective base plate (5) is welded at one end of each connecting steel bar (4), a drainage plate (6) is laid at the top of the soil layer (1), a drainage pipe (7) is fixedly connected to the outer wall of one side of the drainage plate (6) through a bolt, a drainage groove (8) is formed in the position, close to the lower part of the drainage pipe (7), of the top of the protective base plate (5), a drainage hole (9) is formed in the top of the drainage plate (6), a first sand cushion layer (10) is laid at the top of the drainage plate (6), and a geogrid (11) is laid at the top of the first sand cushion layer (10, second gravel and sand bed course (12) have been laid at the top of geogrid (11), concrete layer (13) have been pour at the top of second gravel and sand bed course (12), through bolt fixedly connected with cross slab (14) on one side outer wall of geogrid (11), and through bolt fixedly connected with longitudinal baffle (15) on geogrid (11) the outer wall of one side adjacent to cross slab (14).

2. A highway substructure capable of preventing subgrade softening according to claim 1, wherein: the transverse partition plate (14) and the longitudinal partition plate (15) are crossed.

3. A highway substructure capable of preventing subgrade softening according to claim 1, wherein: the concrete columns (2) are provided with five, and the five concrete columns (2) are uniformly arranged inside the soil layer (1).

4. A highway substructure capable of preventing subgrade softening according to claim 1, wherein: the protective substrate (5) is a triangular prism, and the protective substrate (5) and the soil layer (1) are mutually matched.

5. A highway substructure capable of preventing subgrade softening according to claim 1, wherein: the protective base plates (5) are arranged in two, and the two protective base plates (5) are symmetrically arranged at two ends of the connecting steel bar (4).

6. A highway substructure capable of preventing subgrade softening according to claim 1, wherein: the soil layer (1), the drainage plate (6), the first sand and stone cushion layer (10), the geogrid (11), the second sand and stone cushion layer (12) and the concrete layer (13) are all of a step body structure.