CN214831583U

CN214831583U - Highway subgrade structure capable of preventing subgrade from softening

Info

Publication number: CN214831583U
Application number: CN202121635611.5U
Authority: CN
Inventors: 李春生
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-07-19
Filing date: 2021-07-19
Publication date: 2021-11-23
Anticipated expiration: 2031-07-19

Abstract

The utility model provides a can prevent highway roadbed structure that road bed is softened, the foundation ditch comprises a foundation pit, a plurality of big stones have been thrown to fill in the foundation ditch bottom, it has a plurality of little stones to fill between a plurality of big stones, it has a plurality of support columns to peg graft between a plurality of big stones and a plurality of little stones, the foundation ditch bottom packing has the earth and rockfill layer, the gravel layer has been laid at earth and rockfill layer top, drainage sand bed has been laid at gravel layer top. The utility model discloses an utilize excavating gear to carry out the excavation of foundation ditch bottom the foundation ditch to can utilize excavating gear to clear up the inside miscellaneous muddy soil that fills of foundation ditch, can improve the support ability to the highway main part through pack big stone in the foundation ditch, pack the whole degree of compactness of big stone simultaneously between big stone and can guarantee to pack little stone, thereby reduce the gap between the big stone, can play the effect of support to big stone and little stone through being provided with the support column.

Description

Highway subgrade structure capable of preventing subgrade from softening

Technical Field

The utility model relates to a highway roadbed structure technical field, in particular to can prevent highway roadbed structure that the road bed softens.

Background

The softened roadbed, as the name implies, is a roadbed composed of special soil foundations, and the compressibility of the soil foundations is far higher than that of common soil foundations. Such as silt foundations, miscellaneous fill soils, and the like. The special properties of soft soils are many: the water content and compressibility are both high, and the void ratio is also high. The shear strength is poor, and the mechanical bearing performance is also poor. Most importantly, it is very poorly permeable and nearly impervious to water. Therefore, this results in a slow rate of compressive consolidation. The highway roadbed structure can prevent roadbed softening, and the highway roadbed structure can be used and maintained at a later stage with certain difficulty.

Through the retrieval, chinese patent application number is CN 201822112168.8's patent, discloses a can prevent highway roadbed structure that the road bed is softened, including basic road layer and pavement layer, be provided with filter layer and the drainage sand bed course of permeating water between basic road layer and the pavement layer, the filter layer that permeates water includes steel framework, geotechnological cloth layer and gravel layer, steel framework sets up the top at basic road layer, geotechnological cloth layer sets up on steel framework, gravel layer sets up the top on geotechnological cloth layer, the drainage sand bed course sets up the top on gravel layer, still be provided with between basic road layer and the filter layer that permeates water and prevent the road bed and soften the subassembly.

The highway subgrade structure capable of preventing subgrade softening in the patent has the following defects: because the bottom of the roadbed contains a large amount of silt and soft soil, the stability of the bottom of the roadbed can not be effectively ensured by utilizing cement.

SUMMERY OF THE UTILITY MODEL

In view of this, the embodiments of the present invention are intended to provide a highway subgrade structure capable of preventing subgrade from softening, so as to solve or alleviate the technical problems in the prior art, and at least provide a useful choice.

The embodiment of the utility model provides a technical scheme is so realized: the utility model provides a can prevent highway roadbed structure that road bed is softened, includes the foundation ditch, a plurality of big stones have been thrown to the foundation ditch bottom, it has a plurality of little stones to fill between a plurality of big stones, it has a plurality of support columns to peg graft between a plurality of big stones and a plurality of little stones, the foundation ditch bottom packing has soil and stone layer, the gravel layer has been laid at soil and stone layer top, the drainage sand bed has been laid at gravel layer top, the highway main part has been laid at drainage sand bed top.

In some embodiments, the highway body comprises a gravel layer and a concrete layer, the gravel layer being laid on top of the draining sand layer.

In some embodiments, the concrete layer is laid on top of a gravel layer, and the outer wall of the top of the gravel layer is laid with a tar layer.

In some embodiments, a concrete isolation belt is arranged outside the gravel layer and the drainage sand layer, and a solid soil layer is arranged inside the concrete isolation belt.

In some embodiments, the top of the concrete isolation strip is provided with a side fence.

In some embodiments, two drainage grooves are arranged at the top of the foundation pit, and a drainage pipe is spliced on the inner wall of the drainage sand layer.

In some embodiments, the outer wall of the circumference of the drain pipe is provided with a plurality of seepage holes, and the outer wall of one side of the drain pipe is fixed with a filter screen through screws.

In some embodiments, the side wall of the side enclosure is provided with a plurality of drainage holes.

The embodiment of the utility model provides a owing to adopt above technical scheme, it has following advantage:

1. through utilizing excavating gear to carry out the excavation of foundation ditch bottom the foundation ditch, thereby can utilize excavating gear to clear up the miscellaneous muddy soil of filling of foundation ditch inside, can improve the support ability to the highway main part through pack big stone in the foundation ditch, pack the holistic degree of compactness of big stone simultaneously between big stone, thereby reduce the gap between the big stone, can play the effect of support to big stone and little stone through being provided with the support column, thereby can reduce the amount of movement of big stone and little stone.

2. Through utilizing the road roller to roll earth and rockfill layer to can further improve the compactness between big stone and the little stone, thereby improve holistic load-carrying capacity, can further improve bearing capacity, can effectively improve the water permeability through being provided with gravel layer and drainage sand bed, thereby can effectively reduce the ponding of gravel layer and drainage sand bed inside, thereby can improve the stability of highway main part.

3. Can in time discharge the ponding on asphalt layer surface at rainwater weather through being provided with the wash port, through inserting the drain pipe in the drainage sand bed, can make the inside ponding of drainage sand bed can enter into the drain pipe through the filter screen, thereby can accelerate ponding exhaust speed, can avoid impurity to cause the jam to the drainage pipe inside through being provided with the filter screen, can make the ponding of each position of drainage sand bed inside can enter into inside the drain pipe through the mode of infiltration through being provided with the infiltration hole.

The foregoing summary is provided for the purpose of description only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present invention will be readily apparent by reference to the drawings and following detailed description.

Drawings

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

Fig. 1 is an overall structure diagram of a highway subgrade capable of preventing the subgrade from softening according to the utility model;

FIG. 2 is a diagram of a roadbed main body of the highway roadbed capable of preventing the roadbed from softening according to the utility model;

FIG. 3 is an overall structure diagram of a highway body of a highway subgrade capable of preventing the subgrade from softening according to the present invention;

fig. 4 is a structure diagram of the drainage pipe assembly of the highway subgrade of the utility model, which can prevent the subgrade from softening.

Reference numerals: 1-foundation pit, 2-drainage channel, 3-concrete isolation belt, 4-side edge fence, 5-drainage hole, 6-earth-rock square layer, 7-large stone, 8-small stone, 9-support column, 10-asphalt layer, 11-sand stone layer, 12-sand gravel layer, 13-drainage sand layer, 14-soil fixation layer, 15-concrete layer, 16-drainage pipe, 17-filter screen and 18-percolation hole.

Detailed Description

In the following, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. Accordingly, the drawings and description are to be regarded as illustrative in nature, and not as restrictive.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

Example 1

As shown in fig. 1-4, an embodiment of the present invention provides a highway subgrade structure capable of preventing subgrade from softening, including a foundation pit 1, a plurality of large stones 7 are thrown and filled at the bottom of the foundation pit 1, a plurality of small stones 8 are filled between the large stones 7, a plurality of support columns 9 are inserted between the large stones 7 and the small stones 8, an earth-stone square layer 6 is filled at the bottom of the foundation pit 1, a gravel layer 11 is laid at the top of the earth-stone square layer 6, a drainage sand layer 13 is laid at the top of the gravel layer 11, and a highway main body is laid at the top of the drainage sand layer 13; the excavation of the foundation pit is carried out by utilizing the excavating device at the bottom of the foundation pit 1, so that the excavating device can be utilized to clean the miscellaneous filling soil in the foundation pit 1, the supporting capability of the highway main body can be improved by filling the large stone blocks 7 in the foundation pit, meanwhile, the whole compactness of the large stone blocks 7 can be ensured by filling the small stone blocks 8 between the large stone blocks 7, so that the gaps between the large stone blocks 7 are reduced, the large stone blocks 7 and the small stone blocks 8 can be supported by arranging the supporting columns 9, so that the moving amount of the large stone blocks 7 and the small stone blocks 8 can be reduced, the soil and stone layer 6 is rolled by utilizing a road roller, so that the compactness between the large stone blocks 7 and the small stone blocks 8 can be further improved, the whole loading capability is improved, the bearing capability can be further improved, the water permeability can be effectively improved by arranging the sand stone layer 11 and the drainage sand layer 13, thereby can effectively reduce the inside ponding of gravel layer 11 and drainage sand bed 13 to can improve highway main part's stability.

In one embodiment, the highway main body comprises a gravel layer 12 and a concrete layer 15, wherein the gravel layer 12 is laid on the top of a drainage sand layer 13, the concrete layer 15 is laid on the top of the gravel layer 12, and a tar layer 10 is laid on the outer wall of the top of the gravel layer 12; the drainage sand layer 13 and the concrete layer 15 can be better crossed by arranging the gravel layer 12, the gravel layer 12 can be reinforced by arranging the concrete layer 15, and the flatness of the road surface can be ensured by arranging the asphalt layer 10.

In one embodiment, a concrete isolation belt 3 is arranged outside the gravel layer 11 and the drainage sand layer 13, a solid soil layer 14 is arranged inside the concrete isolation belt 3, and a side edge fence 4 is arranged on the top of the concrete isolation belt 3; can play the effect of consolidating and supporting to the lateral wall on grit layer 11 and drainage sand bed 13 through being provided with concrete isolation zone 3, can be used for the planting of vegetation through being provided with solid soil layer 14 to can play the effect of solid soil, utilize the side to enclose fender 4 and can enclose the fender to tar layer 10, thereby can guarantee the safety of driving a vehicle.

The utility model discloses at the during operation, can improve the holistic intensity of road bed through being provided with a plurality of big stones 7 and little stone 8, utilize support column 9 to play reinforced effect to big stone 7 and little stone 8 simultaneously, pack the earthwork layer 6 in the foundation ditch of foundation ditch 1 after that, utilize the road roller to carry out the compaction operation, lay gravel layer 11 and drainage sand layer 13 on 6 top layers of earthwork layer in proper order after that, lay gravel layer 12 at drainage sand layer 13 top after that, concrete layer 15 and tar layer 10, pour concrete median 3 in gravel layer 11 and drainage sand layer 13 both sides at last, utilize concrete median 3 to support and consolidate the lateral wall of gravel layer 11 and drainage sand layer 13, utilize solid soil layer 14 can carry out the planting of vegetation, thereby can play the effect of solid soil.

Example 2

A highway substructure capable of preventing a subgrade from softening, as shown in fig. 1 to 4, in order to improve drainage capacity; the present embodiment is supplemented by the following on the basis of embodiment 1: the top of the foundation pit 1 is provided with two drainage grooves 2, a drainage pipe 16 is spliced on the inner wall of the drainage sand layer 13, the outer wall of the circumference of the drainage pipe 16 is provided with a plurality of seepage holes 18, the outer wall of one side of the drainage pipe 16 is fixed with a filter screen 17 through screws, and the outer wall of one side of the side edge fence 4 is provided with a plurality of drainage holes 5; can in time discharge the ponding on cypress oil layer 10 surface at rainwater weather through being provided with wash port 5, through inserting drain pipe 16 in drainage sand bed 13, can make the inside ponding of drainage sand bed 13 can enter into drain pipe 16 through filter screen 17, thereby can accelerate ponding exhaust speed, can avoid impurity to cause the jam to drain pipe 16 inside through being provided with filter screen 17, can make the ponding of each inside position of drainage sand bed 13 can enter into inside the drain pipe 16 through the mode of infiltration through being provided with infiltration hole 18.

The utility model discloses at the during operation, can improve the drainage ability on the 10 surfaces of cypress oil layer through being provided with wash port 5 for the discharged water can carry out the landing along concrete median 3, finally flow into and collect in water drainage tank 2, through being provided with drain pipe 16 in drainage sand bed 13 inside, can be so that drainage sand bed 13 inside ponding can be filtered through filter screen 17 after finally flow out from drain pipe 16, can make ponding flow into inside drain pipe 16 through the mode of infiltration through being provided with infiltration hole 18.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of various changes or substitutions within the technical scope of the present invention, which should be covered by the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The utility model provides a can prevent softened highway roadbed structure of road bed, includes foundation ditch (1), its characterized in that: foundation ditch (1) bottom is thrown and is filled with a plurality of big stones (7), it has a plurality of little stones (8) to fill between a plurality of big stones (7), it has a plurality of support columns (9) to peg graft between a plurality of big stones (7) and a plurality of little stones (8), foundation ditch (1) bottom packing has earth and stone layer (6), gravel layer (11) have been laid at earth and stone layer (6) top, drainage sand bed (13) have been laid at gravel layer (11) top, the highway main part has been laid at drainage sand layer (13) top.

2. A highway substructure capable of preventing subgrade softening according to claim 1, wherein: the highway main body comprises a gravel layer (12) and a concrete layer (15), wherein the gravel layer (12) is laid on the top of the drainage sand layer (13).

3. A highway substructure capable of preventing subgrade softening according to claim 2, wherein: the concrete layer (15) is laid on the top of the gravel layer (12), and the asphalt layer (10) is laid on the outer wall of the top of the gravel layer (12).

4. A highway roadbed structure capable of preventing roadbed softening according to claim 3, wherein: and a concrete isolation belt (3) is arranged on the outer sides of the gravel layer (11) and the drainage sand layer (13), and a solid soil layer (14) is arranged inside the concrete isolation belt (3).

5. A highway roadbed structure capable of preventing roadbed softening according to claim 4, wherein: and a side edge enclosure (4) is arranged at the top of the concrete isolation belt (3).

6. A highway roadbed structure capable of preventing roadbed softening according to claim 5, wherein: the top of the foundation pit (1) is provided with two drainage grooves (2), and the inner wall of the drainage sand layer (13) is spliced with a drainage pipe (16).

7. A highway roadbed structure capable of preventing roadbed softening according to claim 6, wherein: a plurality of infiltration holes (18) are formed in the circumferential outer wall of the drain pipe (16), and a filter screen (17) is fixed to the outer wall of one side of the drain pipe (16) through screws.

8. A highway substructure capable of preventing subgrade softening according to claim 7, wherein: the outer wall of one side of the side enclosing barrier (4) is provided with a plurality of drain holes (5).