Roadbed structure based on freezing and thawing resistance of geopolymer concrete

Abstract

The utility model relates to a freeze-thaw resistant roadbed structure based on geopolymer concrete, which comprises a pavement layer, a waterproof layer arranged at the lower part of the pavement layer, a rubble layer arranged at the lower part of the waterproof layer, supporting columns arranged at the lower part of the waterproof layer, every two adjacent supporting columns as a group, an arched plate connected to the lower part of each group of supporting columns, and a convex block arranged at the left side of the lower part of each arched plate, concave blocks are arranged on the right sides of the lower portions of the arch-shaped plates, waterproof layers are arranged between the lower sides of the arch-shaped plates, a plurality of water seepage holes are formed in the arch-shaped plates and the waterproof layers on the lower sides, and drainage pipes are connected between the water seepage holes. Water in the base layer and the pavement layer is effectively prevented from permeating into the gravel layer through the double waterproof layers, free water is prevented from damaging the roadbed due to volume change caused by frost heaving or melting, the arched plates can keep the temperature of the frozen soil layer stable, the deformation requirement of the roadbed can be better met, the overall stability of the roadbed is ensured, and the service life of the roadbed is prolonged. Free water is discharged through the water seepage holes and the drainage pipes, the freeze-thaw problem caused by water accumulation is avoided, the freeze-thaw resistance and the service life of the roadbed are improved, and driving safety is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to roadbed structure design technical field especially, relates to a kind of roadbed structures based on geopolymer concrete freeze-thaw resistance. BACKGROUND

[0002] In the frozen soil area of our country, road can be damaged due to temperature change caused freeze-thaw cycle to road foundation, affect the stability of roadbed and the service life of road, threaten driving safety, need to use anti-freeze roadbed structure to avoid frozen soil to cause influence to road, since free water is contained in roadbed, free water is affected by temperature frost heaving or thawing, the volume of free water will change, in prior art, single waterproof design is difficult to completely prevent water penetration, and lack effective drainage system to guide and discharge free water, freeze-thaw problem can be worsened.

[0003] Aiming at the above problem, a kind of roadbed structure based on geopolymer concrete freeze-thaw resistance is developed. UTILITY MODEL CONTENT

[0004] In order to overcome the shortcomings in the prior art, single waterproof design is difficult to completely prevent water penetration, and lack effective drainage system to guide and discharge free water, freeze-thaw problem can be worsened, the utility model provides a kind of roadbed structure based on geopolymer concrete freeze-thaw resistance.

[0005] The technical scheme of the utility model is:

[0006] A kind of roadbed structure based on geopolymer concrete freeze-thaw resistance, including road surface layer, the lower part of the road surface layer is provided with waterproof layer, the lower part of the waterproof layer is provided with gravel layer, the lower part of the waterproof layer is also provided with support column, every 2 adjacent support column is a group, the lower part of each group of support column is connected with arch plate, the left side of the lower part of the arch plate is provided with lug, the right side of the lower part of the arch plate is provided with recess block, the lower side of the arch plate is also provided with waterproof layer, the arch plate and the waterproof layer on the lower side are all provided with a plurality of water seepage holes, the water seepage holes are connected with drain pipe, the lower side of the waterproof layer on the lower side is provided with base layer, the drain pipe penetrates the base layer.

[0007] Preferably, it also includes shock pad, and the recess block is provided with the shock pad.

[0008] Preferably, the support column can support the waterproof layer on the upside.

[0009] Preferably, the arch plate is convenient for directing melt water.

[0010] Preferably, the lug and the recess block are all provided with positioning hole.

[0011] Preferably, the drain pipe is high in the middle and low on both sides.

[0012] Compared with the prior art, the utility model has the advantages that:

[0013] The utility model discloses through double -deck waterproof layer effectively prevent the moisture in base layer and road surface layer and infiltrate into the gravel layer, prevent free water and cause the volume change of frost heaving or thawing and cause the damage of roadbed, and the arched plate can keep the temperature stability of frozen soil layer, can also better adapt to the roadbed deformation demand, ensure the overall stability of roadbed, and the splicing of arched plate is realized through the positioning hole and makes the convex block and the recessed block joint, thereby adapting the demand of different length roadbed, and the water seepage hole and the drain pipe export free water, avoid the moisture accumulation and lead to the freeze -thaw problem, be favorable to improving the freeze -thaw resistance and service life of roadbed, guarantee the traffic safety. BRIEF DESCRIPTION OF DRAWINGS

[0014] Fig. 1 It is the structural schematic diagram of the utility model.

[0015] Fig. 2 It is the first part of the utility model's three -dimensional structure schematic diagram.

[0016] Fig. 3 It is the second part of the utility model's three -dimensional structure schematic diagram.

[0017] Mark in the drawing: 1, road surface layer, 2, waterproof layer, 3, gravel layer, 4, support column, 5, arched plate, 6, convex block, 7, recessed block, 8, shock pad, 9, water seepage hole, 10, drain pipe, 11, base layer. DETAILED DESCRIPTION

[0018] First of all, it should be pointed out that in the different described embodiments, the same components are provided with the same figure mark or the same component name, wherein the disclosure contained in the entire specification can be transferred to the same components with the same figure mark or the same component name in the meaning. The selected position description in the specification, for example, up, down, lateral and the like, also refers to the directly described and shown drawings and is transferred to the new position in the meaning when the position changes.

[0019] A kind of roadbed structure based on freeze-thaw resistance of geopolymer concrete, such as Figs. 1-3As shown, it comprises a pavement layer 1, a waterproof layer 2 is arranged at the lower part of the pavement layer 1, a gravel layer 3 is arranged at the lower part of the waterproof layer 2, support columns 4 are also arranged at the lower part of the waterproof layer 2, the support columns 4 can support the upper waterproof layer 2, every two adjacent support columns 4 form a group, an arch-shaped plate 5 is connected to the lower part of each group of support columns 4, the arch-shaped plate 5 can guide the melt water, a protruding block 6 is arranged at the left lower part of the arch-shaped plate 5, a recessed block 7 is arranged at the right lower part of the arch-shaped plate 5, a positioning hole is arranged on the protruding block 6 and the recessed block 7, a shock pad 8 is arranged on the recessed block 7, the waterproof layer 2 is also arranged between the lower sides of the arch-shaped plates 5, a plurality of water permeation holes 9 are arranged on the arch-shaped plate 5 and the lower waterproof layer 2, a drainage pipe 10 is connected between the water permeation holes 9, the middle of the drainage pipe 10 is higher than the left and right sides, a base layer 11 is arranged at the lower side of the lower waterproof layer 2, and the drainage pipe 10 penetrates the base layer 11.

[0020] It should be noted that in the permafrost region, the road may be damaged due to the freeze-thaw cycle caused by temperature changes, which affects the stability of the roadbed and the service life of the road, and threatens the safety of driving, so it is necessary to use a freeze-thaw prevention roadbed structure to avoid the influence of permafrost on the road. Since the roadbed contains free water, the volume of the free water will change when it is affected by temperature, the present roadbed structure is provided with two waterproof layers 2, which can block the water in the base layer 11 and the pavement layer 1 from entering the gravel layer 3, and the residual free water in the two waterproof layers 2 can be collected into the drainage pipe 10 through the water permeation holes 9 and then discharged outward through the drainage pipe 10. The structure that the middle of the drainage pipe 10 is higher than the left and right sides is more conducive to the outward discharge of the free water, thereby avoiding the influence of the volume change of the free water on the roadbed. The arch-shaped plate 5 can keep the temperature of the permafrost layer stable, and the arc-shaped structure can better adapt to the deformation demand of the roadbed, so that the roadbed is stable as a whole, and the support column 4 can support the arch-shaped plate 5 and the waterproof layer 2;

[0021] When multiple arch-shaped plates 5 need to be spliced, the protruding block 6 and the corresponding recessed block 7 can be matched through the positioning hole, so as to complete the splicing of multiple arch-shaped plates 5, meet the paving demand of arch-shaped plates 5 of different roadbed lengths, and the shock pad 8 can have a certain shock absorption effect on the adjacent arch-shaped plates 5, thereby avoiding damage to the arch-shaped plate 5 caused by great pressure.

[0022] It should be understood that the above description is only for exemplary purposes and does not mean to limit the present application. Those skilled in the art will understand that the variations of the present application will be included in the scope of the claims herein.

Claims

1. A frost resistance based geopolymer concrete subgrade structure characterized by: The utility model provides a kind of road surface, including road surface layer (1), the lower part of the road surface layer (1) is equipped with waterproof layer (2), the lower part of the waterproof layer (2) is equipped with broken stone layer (3), the lower part of the waterproof layer (2) is also equipped with support column (4), every 2 adjacent support column (4) is a group, the lower part of each group support column (4) is connected with arch plate (5), the left side of the lower part of the arch plate (5) is equipped with lug (6), the right side of the lower part of the arch plate (5) is equipped with recessed block (7), the lower side between the arch plate (5) is also equipped with waterproof layer (2), the arch plate (5) and the waterproof layer (2) on lower side are equipped with a plurality of water seepage holes (9), the water seepage hole (9) is connected with drain pipe (10), the lower side of the waterproof layer (2) is equipped with base layer (11), the drain pipe (10) penetrates the base layer (11).

2. A frost resistance based geopolymer concrete subgrade structure as claimed in claim 1, wherein: It also includes shock pad (8), the recessed block (7) is equipped with the shock pad (8).

3. A frost resistance based geopolymer concrete subgrade structure as claimed in claim 1, wherein: The support column (4) can support the upper waterproof layer (2).

4. A frost resistance based geopolymer concrete subgrade structure as claimed in claim 1, wherein: The arch plate (5) is easy to guide melt water.

5. A frost resistance based geopolymer concrete subgrade structure as claimed in claim 1, wherein: The lug (6) and the recessed block (7) are equipped with positioning hole.

6. A frost resistance based geopolymer concrete subgrade structure as claimed in claim 1, wherein: The drain pipe (10) is high in the middle and low on both sides.

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