Anti-settlement highway subgrade structure in cold region

Abstract

The utility model belongs to the technical field of highway subgrades, and particularly relates to a cold region anti-sedimentation highway subgrade structure which comprises a lower base layer, baffles, a soil filling layer, a base plate, a drainage groove, a hole plate, a geogrid, a reinforcing net, concrete, an upper base layer and a surface layer, the baffles are arranged on the two sides of the lower base layer, the soil filling layer is laid on the top of the lower base layer, and the base plate is arranged on the top of the soil filling layer. The drainage groove is formed in the top of the base plate and horizontally penetrates through the baffle, the hole plate is arranged on the top of the base plate, the geocell is laid on the top of the hole plate, and the concrete is laid on the top of the reinforcing net and backfilled in the geocell. According to the anti-settling highway subgrade structure in the cold region, the drainage channel is arranged in the foundation, water permeating into the foundation is discharged outwards through the drainage channel, loss of soil texture of the foundation is reduced, the foundation is reinforced, and the service life of the foundation is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of highway subgrade, and particularly relates to a cold region settlement-preventing highway subgrade structure. BACKGROUND

[0002] The highway subgrade is a basic structure for supporting the pavement structure and bearing the vehicle load, and is formed by excavation or filling, thereby ensuring the flatness and stability of the road.

[0003] In the area with large snowfall and low temperature, the cold region frozen soil is easily formed, and the melting snow in spring penetrates into the ground, thereby increasing the water content of the slope soil, causing the water and soil loss and reducing the bearing capacity of the foundation; the freezing and thawing instability and damage of the soil slope after the freezing and thawing cycle are common, which seriously threatens the safety of the highway operation, and the simple plant slope protection or simple slope surface protection cannot guarantee the overall stability of the slope. UTILITY MODEL CONTENT

[0004] The utility model discloses a cold region settlement-preventing highway subgrade structure, which is characterized in that a drainage ditch (2) is arranged in the foundation, so that the water penetrating into the foundation is discharged outward through the drainage ditch, the loss of the foundation soil is reduced, and the foundation is reinforced to prolong the service life.

[0005] The technical scheme adopted by the utility model is as follows:

[0006] The utility model discloses a cold region settlement-preventing highway subgrade structure, which is characterized in that a drainage ditch (2) is arranged in the foundation, so that the water penetrating into the foundation is discharged outward through the drainage ditch, the loss of the foundation soil is reduced, and the foundation is reinforced to prolong the service life.

[0007] Preferably, the two sides of the baffle are provided with drainage ditches, and the bottom of the inner side of the drainage ditch is in an arc shape.

[0008] Preferably, the top of the drainage ditch is provided with a reinforcing piece, the reinforcing piece is fixedly connected with the baffle, and the reinforcing piece is in a triangular shape.

[0009] Preferably, the inner side of the baffle is provided with a reinforcing rib, the two ends of the reinforcing rib are fixedly connected with the baffle respectively, and the reinforcing rib is located in the inside of the concrete.

[0010] Preferably, the baffle is in a conical shape.

[0011] Preferably, the number of said drainage grooves is several, and is evenly distributed on the top of the base plate

[0012] The technical effects achieved by the utility model are as follows:

[0013] In the utility model, when the frozen soil melts, rainwater will penetrate downward from the upper base layer, and when the rainwater continuously penetrates downward and passes through the concrete, the soil will be prevented from falling into the drainage groove under the screening of the hole plate and will be accumulated on the base plate, the base plate has a waterproof effect, rainwater is prevented from penetrating downward, and rainwater is discharged outward from the inside of the foundation, so that water can be discharged in time when snow is melted and it rains, further freezing caused by water accumulation is avoided, soil softening and bearing capacity reduction caused by the further freezing are avoided, and the stability of the roadbed is protected.

[0014] In the utility model, the conical baffle is arranged, when the roadbed is constructed, the design of the conical baffle makes the width of the roadbed gradually increase with the increase of the depth, the structure is helpful to disperse and bear the upper load, reduces stress concentration of the foundation, and improves the overall stability of the roadbed. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a three-dimensional schematic view of the overall structure of the utility model;

[0016] Figure 2 is a three-dimensional schematic view of the concrete bottom structure of the utility model;

[0017] Figure 3 is a three-dimensional schematic view of the connection between the reinforcing rib and the baffle of the utility model.

[0018] In the drawings, the component list represented by each reference numeral is as follows:

[0019] 101, lower base layer; 102, baffle; 103, soil filling layer; 104, base plate; 105, drainage groove; 106, hole plate; 107, geogrid; 108, reinforcing net; 109, concrete; 110, upper base layer; 111, surface layer; 2, drainage channel; 3, reinforcing member; 4, reinforcing rib. DETAILED DESCRIPTION

[0020] In order to make the purpose and advantages of the utility model more clear and explicit, the utility model is specifically described below in combination with examples. It should be understood that the following text is only used to describe one or several specific implementation manners of the utility model, and does not strictly limit the protection range of the utility model.

[0021] For example, Figures 1-3As shown, a cold ground anti-settlement highway subgrade structure includes a lower base layer 101, a baffle 102, a fill layer 103, a base plate 104, a drainage channel 105, a hole plate 106, a geotechnical grid 107, a reinforcing net 108, a concrete 109, an upper base layer 110 and a surface layer 111. The baffle 102 is arranged on both sides of the lower base layer 101, the fill layer 103 is laid on the top of the lower base layer 101, the base plate 104 is arranged on the top of the fill layer 103, the drainage channel 105 is opened on the top of the base plate 104 and horizontally penetrates the baffle 102, the hole plate 106 is arranged on the top of the base plate 104, the geotechnical grid 107 is laid on the top of the hole plate 106, the reinforcing net 108 is laid on the top of the geotechnical grid 107, the concrete 109 is laid on the top of the reinforcing net 108 and backfilled inside the geotechnical, the upper base layer 110 is laid on the top of the concrete 109, and the surface layer 111 is laid on the top of the upper base layer 110. When the frozen soil melts, rainwater will penetrate downward from the upper base layer 110. When the rainwater continues to penetrate downward through the concrete 109, it will accumulate on the base plate 104. The base plate 104 has a waterproof effect to prevent rainwater from penetrating downward and allows rainwater to be discharged outward from the inside of the foundation through the drainage channel 105, ensuring that water can be discharged in time during snow melting and rainfall, avoiding further freezing caused by water accumulation and causing soil softening and bearing capacity reduction, thereby slowing down the settlement speed of the foundation and ensuring its safe operation. Under the protection of the baffle 102, soil loss of the foundation can be reduced and the service life of the foundation can be delayed.

[0022] As shown in Figure 1 and 3 , the two sides of the baffle 102 are provided with drainage channels 2, and the bottom of the inner side of the drainage channel 2 is arc-shaped. When the accumulated water in the foundation is discharged from the drainage channel 105, the accumulated water can flow into the drainage channel 2 to guide the water flow, reducing the erosion of the soil on both sides of the road by the water flow, thereby reducing soil erosion and improving the service life of the subgrade and road.

[0023] As shown in Figure 1 and 3 , the top of the drainage channel 2 is provided with a reinforcing member 3, and the reinforcing member 3 is fixedly connected with the baffle 102. The reinforcing member 3 is triangular in shape. The triangular structure has high stability due to its geometric characteristics. Using a triangular support member to support the baffle 102 can significantly improve the stability of the overall structure and reduce the risk of road deformation or collapse.

[0024] As shown in Figure 3 , the inner side of the baffle 102 is provided with a reinforcing rib 4, and the two ends of the reinforcing rib 4 are fixedly connected with the baffle 102. The reinforcing rib 4 is located inside the concrete 109. Temperature changes can cause the concrete 109 to expand or shrink. The reinforcing rib 4 can relieve this temperature stress and prevent the concrete 109 from cracking, improving the durability and service life of the road.

[0025] As Figure 1 and 3 The baffle 102 is conical, and the conical baffle 102 is arranged to gradually increase the width of the roadbed with the increase of the depth, which helps to disperse and bear the upper load, reduce the stress concentration of the foundation, and improve the overall stability of the roadbed.

[0026] As Figure 3 The number of the drainage grooves 105 is several, and the drainage grooves 105 are uniformly distributed on the top of the base plate 104, which can increase the drainage area, speed up the drainage speed, and improve the drainage efficiency, especially in the case of heavy rainfall and snowfall, which can reduce the water accumulation.

[0027] As Figure 3 The soil and the concrete 109 particles are locked in the geocell 107 under the action of the geocell 107 to form a reinforced soil effect, thereby enhancing the overall stability of the foundation, improving the bearing capacity of the foundation, reducing the foundation settlement, and effectively controlling the development of the settlement amount.

[0028] The above is only the preferred embodiment of the present application, and it should be pointed out that for ordinary skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, which should be considered as the protection scope of the present application. The structures, devices and operation methods not specifically described and explained in the present application are implemented according to the conventional means in the art, unless otherwise specified and limited.

Claims

1. A frost-protected, settlement-resistant highway subgrade structure, characterized by: The utility model provides a kind of road construction structure, including lower base layer (101), baffle (102), fill layer (103), base plate (104), drainage groove (105), hole plate (106), geogrid (107), reinforcing net (108), concrete (109), upper base layer (110) and surface layer (111), the baffle (102) is set in the both sides of lower base layer (101), the fill layer (103) is laid on the top of lower base layer (101), the base plate (104) is set on the top of fill layer (103), the drainage groove (105) is opened in the top of base plate (104) and horizontally penetrates baffle (102), the hole plate (106) is set on the top of base plate (104), the geogrid (107) is laid on the top of hole plate (106), the reinforcing net (108) is laid on the top of geogrid (107), the concrete (109) is laid on the top of reinforcing net (108) and backfill in the inside of geotechnical, the upper base layer (110) is laid on the top of concrete (109), the surface layer (111) is laid on the top of upper base layer (110).

2. A frost susceptible subsoil subgrade structure according to claim 1, characterised in that: The both sides of the baffle (102) are provided with drainage channels (2), and the bottom of the inner side of the drainage channels (2) is arc-shaped.

3. A frost susceptible subsoil subgrade structure according to claim 2, characterised in that: The top of the drainage channels (2) is provided with reinforcing members (3), the reinforcing members (3) are fixedly connected with the baffle (102), and the reinforcing members (3) are triangular.

4. A frost susceptible subsoil subgrade structure according to claim 1, characterized in that: The inner side of the baffle (102) is provided with reinforcing ribs (4), the both ends of the reinforcing ribs (4) are fixedly connected with the baffle (102), and the reinforcing ribs (4) are located in the inside of the concrete (109).

5. A frost susceptible subsoil subgrade construction according to claim 1, characterized in that: The shape of the baffle (102) is conical.

6. A frost susceptible subgrade construction according to claim 1, characterized in that: The number of the drainage grooves (105) is several, and they are uniformly distributed on the top of the base plate (104).

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