Geogrid for reinforcing highway subgrade

Abstract

The utility model discloses a geogrid for reinforcing a highway subgrade, which comprises a geogrid I and a geogrid II, the geogrid I and the geogrid II are respectively erected at the top of the subgrade, and the geogrid I and the geogrid II are mutually staggered and overlapped. According to the requirement for edge landing of grids between the second geogrid and the first geogrid, the limiting bolts on the two sides of the surface of the clamping pipe can be loosened, then the limiting bolts are separated from threaded connection of the threaded holes, the clamping rod slides on the inner surface of the clamping pipe, and after the clamping rod slides to a proper position, the limiting bolts are fastened; according to the construction method, the limiting bolts are screwed into the corresponding threaded holes, then the first connecting plate and the second connecting plate can generate force deformation through external pliers, the second connecting plate is clamped on the grid edge between the second geogrid and the first geogrid, finally, the pointed cones are inserted into a roadbed, and the whole geogrid is smashed into the roadbed through an external hammer head. Therefore, the first geogrid, the second geogrid and the roadbed are fastened, and the aim of adjusting the distance between the first geogrid and the second geogrid and the roadbed is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of highway subgrade, in particular to a geogrid for reinforcing a highway subgrade. Background Art

[0002] As an effective roadbed reinforcement material, geogrid has the advantages of high strength, corrosion resistance, good flexibility and easy construction. It has been widely used in engineering fields such as roads, railways, airports, and water conservancy. When using geogrid for roadbed reinforcement, the appropriate type and specifications should be selected according to the actual situation of the project, and the operation should be carried out strictly in accordance with the construction process to ensure the reinforcement effect.

[0003] However, during construction, when laying the geogrid, its joints need to be designed with overlapping edges. In order to avoid pulling apart, slipping, etc., U-shaped clips are generally used at the overlapping edges to be hammered into the base layer to stabilize the overlapping edges. Due to the different grid spacing formed by the geogrid, the clips cannot be fixed as required, resulting in instability at the overlapping edges. Utility Model Content

[0004] The purpose of the utility model is to provide a geogrid for roadbed reinforcement, which has the purpose of adjusting the overlap according to the grid spacing, so as to solve the above-mentioned background technical problems.

[0005] The technical solution of the utility model for solving the above-mentioned technical problems is as follows: a geogrid for reinforcing a highway roadbed, comprising a geogrid 1 and a geogrid 2, wherein the geogrid 1 and the geogrid 2 are respectively arranged on the top of the roadbed, the geogrid 1 and the geogrid 2 are staggered and overlapped with each other, and the overlapping part of the geogrid 1 and the geogrid 2 is clamped and fastened by a clamping structure, the clamping structure comprising a clamping tube tightly fitted on the top of the overlapping part of the geogrid 1 and the geogrid 2, a clamping rod is slidably connected to both sides of the inner cavity of the clamping tube, the clamping rod is fixedly connected to a pointed cone at one end away from the clamping tube, and the pointed cone is inserted into the interior of the roadbed, the bottom of the clamping tube is fixedly connected to a connecting plate 1, and the front and rear end surfaces of the bottom of the connecting plate 1 are integrally connected to a deformable connecting plate 2, a threaded hole is opened on the surface of the clamping rod located inside the clamping tube, and a limit bolt is threadedly connected to the inner surface of the threaded hole, and the limit bolt passes through the clamping tube and extends to the outside of the clamping tube.

[0006] Preferably, guide grooves are provided on the top and bottom of the clamping tube, and guide blocks are slidably connected to the inner surfaces of the guide grooves. The guide grooves penetrate the end surfaces on both sides of the clamping tube.

[0007] Preferably, a through hole is provided on the surface of the clamping tube at a position corresponding to the limiting bolt, and the limiting bolt passes through the through hole and is threadedly connected to the inner surface of the threaded hole.

[0008] Preferably, the connection between the connecting plate 1 and the connecting plate 2 is designed to be arc-shaped, and the connecting plate 2 can fit tightly with the side surface of the grid formed by the geogrid 1 and the geogrid 2 under the action of force.

[0009] Preferably, a grid is formed between the first geogrid and the second geogrid, and the clamping tube is clamped at a diagonal position of the grid at an angle, and there are multiple clamping tubes.

[0010] The beneficial effects of the utility model are:

[0011] The utility model can loosen the limit bolts on both sides of the clamping tube surface according to the overlap requirement of the grid between the geogrid 2 and the geogrid 1, and then make the limit bolts leave the threaded connection of the threaded hole, so that the clamping rod slides on the inner surface of the clamping tube. When it slides to the appropriate position, the limit bolts are tightened so that the limit bolts are threadedly connected in the corresponding threaded hole. Then, the connecting plate 1 and the connecting plate 2 can be deformed by force through the external pliers, so that the connecting plate 2 is clamped to the grid edge between the geogrid 2 and the geogrid 1. Finally, the pointed cone is inserted into the roadbed, and the external hammer is used to hammer it into the roadbed as a whole, so that the geogrid 1 and the geogrid 2 and the roadbed are fastened. By setting the above structure, the purpose of adjusting the overlap between the spacing can be achieved, thereby meeting different fastening requirements;

[0012] 2. The utility model uses a sliding connection between the guide groove and the guide block to allow the clamping rod to slide on the inner surface of the clamping tube for guidance, while also limiting the upper and lower positions of the clamping rod;

[0013] 3. The utility model provides a through hole to facilitate the penetration of the limit bolt, thereby enabling a threaded connection between the limit bolt and the threaded hole;

[0014] 4. The utility model provides a second connecting plate which can fit tightly with the side of the grid formed by geogrid one and geogrid two under the action of force, so that the clamping pipe connected at the top can be better fitted and connected to the grid end faces of geogrid one and geogrid two. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] in:

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the clamping structure of the utility model;

[0018] Figure 3 This is a partially disassembled schematic diagram of the clamping structure of the utility model;

[0019] Figure 4 This is a partial enlarged view of point A of the present invention.

[0020] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0021] 1. Geogrid 1; 2. Geogrid 2; 3. Roadbed; 4. Clamping pipe; 5. Clamping rod; 6. Cone; 7. Connecting plate 1; 8. Connecting plate 2; 9. Guide groove; 10. Threaded hole; 11. Limit bolt; 12. Through hole; 13. Guide block. DETAILED DESCRIPTION

[0022] Hereinafter, embodiments of the geogrid for reinforcing a highway subgrade according to the present invention will be described with reference to the accompanying drawings. Example 1

[0023] Figure 1-4The utility model shows a geogrid for roadbed reinforcement according to an embodiment of the present invention, comprising geogrid 1 and geogrid 2, which are respectively arranged on the top of a roadbed 3, and geogrid 1 and geogrid 2 are staggered and overlapped with each other, and the overlap of geogrid 1 and geogrid 2 is clamped and fastened by a clamping structure, the clamping structure comprising a clamping tube 4 that fits tightly on the top of the overlap of geogrid 1 and geogrid 2, and a clamping rod 5 is slidably connected to both sides of the inner cavity of the clamping tube 4, and a guide groove 9 is provided on the top and bottom of the clamping tube 4, and the inner surface of the guide groove 9 is slidably connected to The guide block 13 and the guide groove 9 pass through the end faces on both sides of the clamping tube 4. The sliding connection between the guide groove 9 and the guide block 13 can make the clamping rod 5 slide on the inner surface of the clamping tube 4 for guidance, and also limit the upper and lower positions of the clamping rod 5. The end of the clamping rod 5 away from the clamping tube 4 is fixedly connected with a sharp cone 6, and the sharp cone 6 is inserted into the interior of the roadbed 3. The bottom of the clamping tube 4 is fixedly connected with a connecting plate 7. The front and rear end surfaces of the bottom of the connecting plate 7 are integrally connected with a deformable connecting plate 2 8. The surface of the clamping rod 5 located inside the clamping tube 4 is provided with a threaded hole 10, and the inner surface of the threaded hole 10 is threadedly connected to a limiting bolt 11 , a through hole 12 is opened on the surface of the clamping tube 4 and at a position corresponding to the limit bolt 11, the limit bolt 11 passes through the through hole 12 and is threadedly connected to the inner surface of the threaded hole 10. By setting the through hole 12, it is convenient for the limit bolt 11 to pass through, so that the limit bolt 11 and the threaded hole 10 are threadedly connected. The limit bolt 11 passes through the clamping tube 4 and extends to the outside of the clamping tube 4. According to the overlap requirement of the grid between the geogrid 2 and the geogrid 1, the limit bolts 11 on both sides of the surface of the clamping tube 4 can be loosened, and then the limit bolts 11 are allowed to leave the threaded connection of the threaded hole 10, so that the clamping rod 5 is in the clamping tube 4. The inner surface slides, and when it slides to the appropriate position, the limit bolt 11 is tightened so that the limit bolt 11 is threadedly connected in the corresponding threaded hole 10. Then, the connecting plate 1 7 and the connecting plate 2 8 can be deformed by force through the external pliers, so that the connecting plate 2 8 is clamped on the grid edge between the geogrid 2 2 and the geogrid 1 1. Finally, it is inserted into the roadbed 3 through the pointed cone 6, and the external hammer head is used to smash it into the roadbed 3 as a whole, so that the geogrid 1 and the geogrid 2 2 and the roadbed 3 are fastened. By setting the above structure, the purpose of adjusting the overlap of the spacing can be achieved, thereby meeting the tightening requirements. Example 2

[0024] Figure 1-4The utility model shows a geogrid for highway roadbed reinforcement according to an embodiment of the present invention, including geogrid 1 and geogrid 2. Geogrid 1 and geogrid 2 are respectively arranged on the top of the roadbed 3. Geogrid 1 and geogrid 2 are staggered and overlapped with each other. The overlap of geogrid 1 and geogrid 2 is clamped and fastened by a clamping structure. The clamping structure includes a clamping tube 4 that fits tightly on the top of the overlap of geogrid 1 and geogrid 2. Both sides of the inner cavity of the clamping tube 4 are slidably connected with a clamping rod 5. The end of the clamping rod 5 away from the clamping tube 4 is fixedly connected with a pointed cone 6. The pointed cone 6 is inserted into the interior of the roadbed 3. The bottom of the clamping tube 4 is fixedly connected with a connecting plate 1 7. The front and rear end surfaces of the bottom of the connecting plate 7 are integrally connected with a deformable connecting plate 2 8. The connecting plate 1 7 and The connection between the two connecting plates 8 is designed to be arc-shaped. Under the action of force, the connecting plate 28 can fit tightly with the side of the grid formed by geogrid 1 and geogrid 2. A grid is formed between geogrid 1 and geogrid 2. The clamping tube 4 is obliquely clamped at the diagonal position of the grid. There are multiple clamping tubes 4. By setting the connecting plate 28, it can fit tightly with the side of the grid formed by geogrid 1 and geogrid 2 under the action of force, so that the clamping tube 4 connected at the top can be better fitted and connected to the grid end face of geogrid 1 and geogrid 2. A threaded hole 10 is opened on the surface of the clamping rod 5 located inside the clamping tube 4. The inner surface of the threaded hole 10 is threadedly connected to a limiting bolt 11. The limiting bolt 11 passes through the clamping tube 4 and extends to the outside of the clamping tube 4.

[0025] Working principle: When the present invention is used, the limit bolts 11 on both sides of the surface of the clamping tube 4 can be loosened according to the overlap requirement of the grid between the geogrid 2 and the geogrid 1, and then the limit bolts 11 are made to leave the threaded connection of the threaded hole 10, and the sliding connection between the guide groove 9 and the guide block 13 can make the clamping rod 5 slide on the inner surface of the clamping tube 4 for guidance, and at the same time limit the upper and lower positions of the clamping rod 5. When it slides to the appropriate position, the limit bolts 11 are tightened so that the limit bolts 11 are threadedly connected in the corresponding threaded holes 10, and then the external pliers can be used to make the connecting plate 1 7 and the connecting plate 2 8 generate force deformation, so that the connecting plate 2 8 is clamped on the grid edge between the geogrid 2 and the geogrid 1, and finally the pointed cone 6 is inserted into the roadbed 3, and the external hammer is used to hammer it into the roadbed 3 as a whole, so that the geogrid 1 and the geogrid 2 and the roadbed 3 are tightened, and the purpose of adjusting the overlap between the spacing can be achieved, thereby meeting different tightening requirements.

Claims

1. A geogrid for roadbed reinforcement, comprising a geogrid 1 (1) and a geogrid 2 (2), wherein the geogrid 1 (1) and the geogrid 2 (2) are respectively arranged on the top of the roadbed (3), and the geogrid 1 (1) and the geogrid 2 (2) are staggered and overlapped with each other, characterized in that: The overlap of the geogrid 1 (1) and the geogrid 2 (2) is clamped and fastened by a clamping structure, wherein the clamping structure includes a clamping tube (4) tightly fitted on the top of the overlap of the geogrid 1 (1) and the geogrid 2 (2), and both sides of the inner cavity of the clamping tube (4) are slidably connected with a clamping rod (5), and the end of the clamping rod (5) away from the clamping tube (4) is fixedly connected with a pointed cone (6), and the pointed cone (6) is inserted into the interior of the roadbed (3), and the bottom of the clamping tube (4) is fixedly connected with a connecting plate 1 (7), and the front and rear end surfaces of the bottom of the connecting plate 1 (7) are integrally connected with a deformable connecting plate 2 (8), and a threaded hole (10) is opened on the surface of the clamping rod (5) located inside the clamping tube (4), and the inner surface of the threaded hole (10) is threadedly connected with a limiting bolt (11), and the limiting bolt (11) passes through the clamping tube (4) and extends to the outside of the clamping tube (4).

2. The geogrid for roadbed reinforcement according to claim 1, characterized in that: The top and bottom of the clamping tube (4) are both provided with guide grooves (9), the inner surface of the guide groove (9) is slidably connected to a guide block (13), and the guide groove (9) passes through the end surfaces on both sides of the clamping tube (4).

3. The geogrid for roadbed reinforcement according to claim 1, characterized in that: A through hole (12) is provided on the surface of the clamping tube (4) at a position corresponding to the limiting bolt (11), and the limiting bolt (11) passes through the through hole (12) and is threadedly connected to the inner surface of the threaded hole (10).

4. The geogrid for roadbed reinforcement according to claim 1, characterized in that: The connection between the connecting plate 1 (7) and the connecting plate 2 (8) is designed to be arc-shaped, and the connecting plate 2 (8) can be tightly fitted with the grid side formed by the geogrid 1 (1) and the geogrid 2 (2) under the action of force.

5. The geogrid for roadbed reinforcement according to claim 4, characterized in that: A grid is formed between the geogrid 1 (1) and the geogrid 2 (2), and the clamping tube (4) is clamped at a diagonal position of the grid in an inclined manner. The number of the clamping tubes (4) is multiple.

Images