Anti-settling highway shoulder structure

Abstract

The utility model discloses a kind of anti-settlement highway shoulder structures, including the roadbed being arranged in one side of carriageway, further include: bottom base layer, top of roadbed is laid, its top is provided as inclined plane;Drainage mechanism, top of bottom base layer is laid, drainage mechanism is used to carry out effective drainage operation to the water that seeps into;Reinforcing mechanism, top of drainage mechanism is laid, reinforcing mechanism is used to improve the overall strength of shoulder structure;Anti-settlement revetment, it is arranged in the side of roadbed away from carriageway, and contact with drainage mechanism and reinforcing mechanism.The utility model cooperates by drainage mechanism, reinforcing mechanism and anti-settlement revetment, constructs a compound shoulder structure of smooth drainage, structure rigid, lateral stability, the shoulder structure can effectively discharge seepage water, and evenly diffuse load by high-strength rigid layer, finally by anti-settlement revetment provide lateral restraint, effectively solve the occurrence of shoulder structure settlement from root.

Description

Technical Field

[0001] This utility model relates to the field of highway shoulder technology, and in particular to a highway shoulder structure for preventing settlement. Background Technology

[0002] Highway shoulders, serving as lateral supports for the driving lanes and emergency stopping lanes, are a crucial component of highway engineering. However, during long-term use, uneven settlement easily occurs at the connection between the shoulder and the driving lane, leading to longitudinal cracks and misalignments. This condition not only affects driving comfort and safety but also significantly increases the cost of subsequent road maintenance. The main causes of shoulder settlement include: 1. Relatively low shoulder compaction, making it prone to plastic deformation and settlement; 2. Insufficient internal drainage capacity of traditional shoulder structures, preventing timely drainage of infiltrated water, which softens the subgrade soil over time, resulting in reduced bearing capacity and settlement; 3. Lack of effective lateral restraint on the outermost side of the shoulder, making it prone to outward displacement under load, accelerating the loosening of the internal structure and leading to settlement.

[0003] In existing technologies, geotextiles or crushed stone layers are typically used to reinforce settlement, but these structures are often simple and fail to form a comprehensive solution that integrates efficient drainage, rigid reinforcement, and lateral restraint. To achieve effective settlement prevention, this application proposes a settlement-preventing highway shoulder structure. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a road shoulder structure for preventing settlement.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A settlement-resistant highway shoulder structure includes a roadbed set on one side of the driving lane, and further includes:

[0007] The subbase layer is laid on top of the roadbed, and its top is set as a sloping surface;

[0008] Drainage system, laid on top of the subbase, is used to effectively drain infiltrated water.

[0009] The reinforcement mechanism, laid on top of the drainage mechanism, is used to improve the overall strength of the shoulder structure.

[0010] Anti-settlement slope protection is set on the side of the roadbed away from the driving lane and is in contact with the drainage and reinforcement mechanisms. Anti-settlement slope protection is used to provide lateral support for the shoulder structure.

[0011] The road surface layer is laid on top of the reinforcement structure and the anti-settlement slope protection.

[0012] Preferably, the drainage mechanism includes a first drainage composite geotextile, a second drainage composite geotextile, a first crushed stone layer, a second crushed stone layer, multiple drainage pipes, and multiple filter screens. The second crushed stone layer is laid on the inclined surface at the top of the subbase. The first drainage composite geotextile is laid on top of the second crushed stone layer. The first crushed stone layer is laid between the first and second drainage composite geotextiles. The second drainage composite geotextile is located at the top. Multiple drainage pipes are inclinedly cast within the anti-settlement slope. Filter screens are fixedly fitted inside the corresponding drainage pipes. The right side of the bottom inner wall of the drainage pipe is flush with the bottom of the second crushed stone layer. The filter screens are used to intercept impurities, reduce the possibility of impurities clogging the drainage pipes, and ensure smooth drainage.

[0013] Preferably, the reinforcement mechanism includes a cement pouring layer, a first reinforcing steel skeleton, a grid-type reinforcing geotextile, and a reinforced concrete slab. The first reinforcing steel skeleton is poured inside the cement pouring layer, the cement pouring layer is laid on top of the second drainage composite geotextile, the grid-type reinforcing geotextile is laid on top of the cement pouring layer, and the reinforced concrete slab is laid on top of the grid-type reinforcing geotextile. The top of the reinforced concrete slab is in contact with the bottom of the pavement layer. The cement pouring layer, the first reinforcing steel skeleton, the grid-type reinforcing geotextile, and the reinforced concrete slab can effectively improve the strength of the shoulder structure and achieve the effect of uniformly distributing the load.

[0014] Preferably, the anti-sinking slope is reinforced with a second reinforcing steel frame, the anti-sinking slope is made of crushed stone and poured concrete, and the left end of the drainage pipe is flush with the left side of the anti-sinking slope.

[0015] Preferably, the subbase is lime-stabilized soil, and the pavement layer is asphalt concrete with the same thickness as the asphalt layer of the driving lane.

[0016] Preferably, both the first and second drainage composite geotextiles are provided with multiple filter mesh cores for filtration and isolation. The first and second drainage composite geotextiles are used to prevent the upper and lower fine-grained soil from intruding into the middle first crushed stone layer, ensuring its long-term permeability. The total thickness of the subbase, the first drainage composite geotextile, the second drainage composite geotextile, the first crushed stone layer, and the second crushed stone layer is the same as the thickness of the roadway subbase.

[0017] Preferably, the thickness of the reinforced concrete slab is 15-20cm, and the total thickness of the cement pouring layer, the grid-type reinforcing geotextile and the reinforced concrete slab is the same as that of the roadway base layer.

[0018] Compared with existing technologies, the beneficial effects of this utility model are:

[0019] This invention constructs a composite shoulder structure with smooth drainage, strong structure, and lateral stability through the coordinated operation of drainage mechanism, reinforcement mechanism and anti-settlement slope protection. The shoulder structure can effectively drain infiltrated water and evenly spread the load through a high-strength rigid layer. Finally, the anti-settlement slope protection provides lateral restraint, effectively solving the problem of shoulder structure settlement from the root. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of a road shoulder structure for preventing settlement proposed in this utility model;

[0021] Figure 2 This is a schematic diagram of the front sectional view of a road shoulder structure for preventing settlement proposed in this utility model;

[0022] Figure 3 for Figure 2 A magnified structural diagram of part A in the middle.

[0023] In the diagram: 1. Roadbed; 2. Subbase; 3. Drainage system; 301. Drainage pipe; 302. Second crushed stone layer; 303. Filter screen; 304. First crushed stone layer; 305. First drainage composite geotextile; 306. Second drainage composite geotextile; 4. Cement pouring layer; 5. First reinforcing steel skeleton; 6. Grid-type reinforcing geotextile; 7. Reinforced concrete slab; 8. Pavement layer; 9. Anti-settlement slope protection; 901. Second reinforcing steel skeleton. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] Reference Figure 1-3 A road shoulder structure for preventing settlement includes a roadbed 1 set on one side of the driving lane, and further includes:

[0026] Subbase 2 is laid on top of subgrade 1, and its top is set as an inclined surface. Subbase 2 is lime-stabilized soil.

[0027] Drainage mechanism 3 is laid on top of the base layer 2 and is used to effectively drain infiltrated water.

[0028] The drainage mechanism 3 includes a first drainage composite geotextile 305, a second drainage composite geotextile 306, a first crushed stone layer 304, a second crushed stone layer 302, multiple drainage pipes 301, and multiple filter screens 303. The second crushed stone layer 302 is laid on the inclined surface at the top of the base layer 2. The first drainage composite geotextile 305 is laid on top of the second crushed stone layer 302. The first crushed stone layer 304 is laid between the first drainage composite geotextile 305 and the second drainage composite geotextile 306. The second drainage composite geotextile 306 is located at the top. The filter screen 303 is fixedly sleeved in the corresponding drainage pipe 301. The bottom inner wall right side of the drainage pipe 301 is flush with the bottom of the second crushed stone layer 302. The filter screen 303 is set to intercept impurities, reduce the situation of impurities clogging the drainage pipe 301, and ensure smooth drainage.

[0029] Both the first drainage composite geotextile 305 and the second drainage composite geotextile 306 are equipped with multiple filter mesh cores for filtration and isolation. The first drainage composite geotextile 305 and the second drainage composite geotextile 306 are used to prevent the fine soil from the upper and lower layers from intruding into the middle first crushed stone layer 304, ensuring its long-term permeability. The total thickness of the subbase 2, the first drainage composite geotextile 305, the second drainage composite geotextile 306, the first crushed stone layer 304 and the second crushed stone layer 302 is the same as that of the roadway subbase.

[0030] In this implementation plan, the second drainage composite geotextile 306, the first crushed stone layer 304, and the first drainage composite geotextile 305 form a closed drainage blind ditch system from top to bottom. The infiltrated water passes through the second drainage composite geotextile 306, the first crushed stone layer 304, and the first drainage composite geotextile 305 in sequence. With the inclined surface design of the top surface of the subbase 2, the infiltrated water is guided by gravity through the second crushed stone layer 302 to flow towards the drainage pipe 301 and collect. The collected water is laterally led out to the outside of the road shoulder through the inclined drainage pipe 301. The water flow is guided by the inclined surface, and the filter mesh core on the first drainage composite geotextile 305 and the second drainage composite geotextile 306 can quickly collect water, thereby greatly improving the drainage efficiency.

[0031] It should also be noted that the first drainage composite geotextile 305 and the second drainage composite geotextile 306 are both made of non-woven fabric. The non-woven fabric surface is used for reverse filtration to effectively prevent the fine soil from the upper and lower layers from intruding into the middle first gravel layer 304, ensuring its long-term permeability.

[0032] Furthermore:

[0033] A settlement-resistant highway shoulder structure also includes a reinforcement mechanism, which is laid on top of a second drainage composite geotextile 306. The reinforcement mechanism is used to improve the overall strength of the shoulder structure.

[0034] The reinforcement structure includes a cement pouring layer 4, a first reinforcing steel skeleton 5, a grid-type reinforcing geotextile 6, and a reinforced concrete slab 7. The first reinforcing steel skeleton 5 is poured inside the cement pouring layer 4. The cement pouring layer 4 is laid on top of the second drainage composite geotextile 306. The grid-type reinforcing geotextile 6 is laid on top of the cement pouring layer 4. The reinforced concrete slab 7 is laid on top of the grid-type reinforcing geotextile 6. The cement pouring layer 4, the first reinforcing steel skeleton 5, the grid-type reinforcing geotextile 6, and the reinforced concrete slab 7 can effectively improve the strength of the shoulder structure and achieve the effect of uniformly distributing the load.

[0035] The thickness of the reinforced concrete slab 7 is 15-20cm. The total thickness of the cement pouring layer 4, the grid-type reinforced geotextile 6 and the reinforced concrete slab 7 is the same as that of the roadway base course.

[0036] In this implementation plan: the cement pouring layer 4 and the first reinforcing steel skeleton 5 inside it provide the initial strength and integrity of the entire shoulder structure. The grid-type reinforcing geotextile 6 laid on it serves as a reinforcing material, which can effectively distribute the load and suppress the generation of reflective cracks. The top reinforced concrete slab 7 forms a high-rigidity load-bearing slab layer, which greatly reduces deformation under wheel loads, thereby effectively reducing the settlement problem caused by deformation.

[0037] Furthermore:

[0038] A road shoulder structure for preventing settlement also includes a slope protection 9, which is set on the side of the roadbed 1 away from the driving lane. Multiple drainage pipes 301 are inclinedly poured into the slope protection 9. The slope protection 9 is used to provide lateral support for the road shoulder structure. A second reinforcing steel skeleton 901 is poured into the slope protection 9. The slope protection 9 is made of crushed stone concrete. The left end of the drainage pipe 301 is flush with the left side of the slope protection 9.

[0039] The road surface layer 8 is laid on top of the reinforced concrete slab 7 and the anti-settlement slope protection 9. The road surface layer 8 is asphalt concrete and has the same thickness as the asphalt layer of the driving lane.

[0040] In this implementation plan: the anti-settlement slope protection 9, together with the concrete structure with the second reinforcing steel skeleton 901 poured inside, provides solid lateral support for the entire shoulder structure, effectively resisting lateral displacement of the soil and slope slippage.

[0041] Working principle: The second drainage composite geotextile 306, the first crushed stone layer 304, and the first drainage composite geotextile 305 form a closed drainage blind ditch system from top to bottom. Together with the second crushed stone layer 302 laid on the top surface of the inclined subbase 2, it provides a channel for water collection and initial drainage. This allows infiltrated water to sequentially pass through the second drainage composite geotextile 306, the first crushed stone layer 304, and the first drainage composite geotextile 305. Combined with the inclined surface design of the top surface of the subbase 2, the infiltrated water is drawn through the second crushed stone layer by gravity. 302 guides the water flow towards the drainage pipe 301 and collects the collected water. The water is then laterally led out to the outside of the road shoulder through the inclined drainage pipe 301. By guiding the water flow through the inclined surface, the first drainage composite geotextile 305 and the second drainage composite geotextile 306 use their non-woven fabric surfaces for reverse filtration, effectively preventing the upper and lower layers of fine soil from intruding into the middle first gravel layer, ensuring its long-term permeability. In addition, the filter mesh core on it can quickly collect water, thereby greatly improving the drainage efficiency and fundamentally avoiding settlement caused by water damage.

[0042] Furthermore, the cement pouring layer 4 and the first reinforcing steel skeleton 5 inside it provide the initial strength and integrity of the entire shoulder structure. The grid-type reinforcing geotextile 6 laid on it serves as a reinforcing material, which can effectively distribute the load and suppress the generation of reflective cracks. The top reinforced concrete slab 7 forms a high-rigidity load-bearing slab layer, which greatly reduces the deformation under wheel load, thereby effectively reducing the settlement problem caused by deformation.

[0043] In addition, the anti-settlement slope protection 9 set on the outermost side of the shoulder structure, together with the concrete structure with the second reinforcing steel skeleton 901 poured inside, provides solid lateral support for the entire shoulder structure, effectively resisting lateral displacement of the soil and slope slippage, ensuring the long-term stability of the shoulder structure, and thus achieving an effective anti-settlement effect.

[0044] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A road shoulder structure for preventing settlement, comprising a roadbed (1) set on one side of the driving lane, characterized in that, Also includes: The subbase (2) is laid on top of the roadbed (1), and its top is set as an inclined surface; Drainage mechanism (3) is laid on top of the subbase (2); The reinforcement mechanism is laid on top of the drainage mechanism (3); The anti-sinking slope protection (9) is set on the side of the roadbed (1) away from the driving lane and is in contact with the drainage mechanism (3) and the reinforcement mechanism; The pavement layer (8) is laid on top of the reinforcement structure and the anti-settlement slope protection (9).

2. The anti-settlement highway shoulder structure according to claim 1, characterized in that, The drainage mechanism (3) includes a first drainage composite geotextile (305), a second drainage composite geotextile (306), a first crushed stone layer (304), a second crushed stone layer (302), multiple drainage pipes (301) and multiple filter screens (303). The second crushed stone layer (302) is laid on the inclined surface at the top of the base layer (2). The first drainage composite geotextile (305) is laid on top of the second crushed stone layer (302). The first crushed stone layer (304) is laid between the first drainage composite geotextile (305) and the second drainage composite geotextile (306). The second drainage composite geotextile (306) is located at the top. Multiple drainage pipes (301) are all inclinedly poured into the anti-settlement slope protection (9). The filter screens (303) are fixedly sleeved in the corresponding drainage pipes (301). The right side of the bottom inner wall of the drainage pipe (301) is flush with the bottom of the second crushed stone layer (302).

3. The anti-settlement highway shoulder structure according to claim 2, characterized in that, The reinforcement structure includes a cement pouring layer (4), a first reinforcing steel skeleton (5), a grid-type reinforcing geotextile (6), and a reinforced concrete slab (7). The first reinforcing steel skeleton (5) is poured inside the cement pouring layer (4). The cement pouring layer (4) is laid on top of the second drainage composite geotextile (306). The grid-type reinforcing geotextile (6) is laid on top of the cement pouring layer (4). The reinforced concrete slab (7) is laid on top of the grid-type reinforcing geotextile (6). The top of the reinforced concrete slab (7) is attached to the bottom of the pavement layer (8).

4. The anti-settlement highway shoulder structure according to claim 2, characterized in that, The anti-sinking slope (9) is filled with a second reinforcing steel frame (901). The anti-sinking slope (9) is made of crushed stone concrete. The left end of the drainage pipe (301) is flush with the left side of the anti-sinking slope (9).

5. The anti-settlement highway shoulder structure according to claim 1, characterized in that, The subbase (2) is lime-stabilized soil, and the pavement layer (8) is asphalt concrete with the same thickness as the asphalt layer of the carriageway.

6. A road shoulder structure for preventing settlement as described in claim 2, characterized in that, The first drainage composite geotextile (305) and the second drainage composite geotextile (306) are each provided with multiple filter mesh cores for reverse filtration and isolation. The total thickness of the subbase (2), the first drainage composite geotextile (305), the second drainage composite geotextile (306), the first crushed stone layer (304) and the second crushed stone layer (302) is the same as that of the roadway subbase.

7. A road shoulder structure for preventing settlement as described in claim 3, characterized in that, The thickness of the reinforced concrete slab (7) is 15-20cm, and the total thickness of the cement pouring layer (4), the grid-type reinforced geotextile (6) and the reinforced concrete slab (7) is the same as that of the roadway base course.

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