Asphalt highway subgrade anti-collapse structure

Abstract

The utility model discloses an asphalt highway subgrade anti-collapse structure which comprises a pile body. The top end of the pile body is fixedly connected with a supporting plate, a geogrid is arranged above the supporting plate, a gravel layer is laid on the top of the geogrid, a through hole is formed in the top of the supporting plate, and a threaded rod is arranged above the geogrid in a penetrating mode. Soil below a roadbed layer is inserted and fixed through the pile body and the supporting plate, meanwhile, the geogrid and the supporting plate are fixedly connected through matched use of the threaded rod and the nut block, the roadbed layer is powerfully supported by the geogrid through laying of the gravel layer, pile insertion can be conducted on the soil at the bottom of a roadbed, and the roadbed layer is prevented from being damaged. The roadbed is supported under the ground, and the geogrid is laid between the pile body and the roadbed, so that the connection stability between the roadbed and the pile body is further improved, and the purpose of improving the structural stability of the asphalt highway roadbed is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of asphalt highway roadbed, in particular to an anti-collapse structure of an asphalt highway roadbed. Background Art

[0002] The asphalt highway subgrade is a linear structure built with soil or stone. Since the subgrade is in an open-air state, it is often eroded by rain, which affects the strength and stability of the subgrade. Due to the large mountainous area in my country, many mountain roads need to be built to accelerate the economic development of mountainous areas. When laying the subgrade, the side slopes of the subgrade are mostly exposed on the outside of the mountain, which is easily eroded by rain and collapses.

[0003] In order to reduce the impact of loose soil and soft geology on the stability of asphalt highway subgrade, the bottom of the subgrade needs to be reinforced. Therefore, an anti-collapse structure for asphalt highway subgrade is needed. Piles can be inserted into the soil at the bottom of the subgrade so that the underground supports the subgrade, and geogrids can be laid between the piles and the subgrade to further improve the stability of the connection between the subgrade and the piles, thereby improving the structural stability of the asphalt highway subgrade and preventing collapse. Utility Model Content

[0004] The purpose of the utility model is to provide an anti-collapse structure for an asphalt highway subgrade, in which piles are inserted into the soil at the bottom of the subgrade so that the subgrade is supported underground, and geogrids are laid between the piles and the subgrade so that the connection stability between the subgrade and the piles is further improved, thereby improving the structural stability of the asphalt highway subgrade and preventing the occurrence of collapse, so as to solve the technical problems raised by the above-mentioned background technology.

[0005] The utility model provides a technical solution for solving the above-mentioned technical problems as follows: an anti-collapse structure for an asphalt highway roadbed, comprising a pile body: a support plate is fixedly connected to the top of the pile body, a geogrid is arranged above the support plate, a sand and gravel layer is laid on the top of the geogrid, a perforation is opened on the top of the support plate, a threaded rod is arranged through the top of the geogrid, a structural adhesive layer is filled between the inner wall of the perforation and the threaded rod, two symmetrically arranged nut blocks are threadedly connected to the surface of the threaded rod, and a roadbed layer is arranged on the top of the sand and gravel layer.

[0006] Preferably, a pad is sleeved on the surface of the threaded rod, and the pad is a rubber pad.

[0007] Preferably, a washer is sleeved on the surface of the threaded rod, and the washer is an elastic washer.

[0008] Preferably, a vertical pole is welded to the top end of the support plate, an oblique pole is welded to the surface of the vertical pole, and a welding pole is welded between the vertical pole and the oblique pole.

[0009] Preferably, a plug rod is welded to the surface of the pile body, and the bottom end of the plug rod is tapered.

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

[0011] 1. The utility model inserts and fixes the soil below the roadbed through piles and supporting plates. At the same time, the geogrid and the supporting plate are fixedly connected by the use of threaded rods and nut blocks. The laying of the sand and gravel layer enables the geogrid to provide strong support for the roadbed. This can achieve the purpose of inserting piles into the soil below the roadbed, so that the underground supports the roadbed. The geogrid is laid between the piles and the roadbed, so that the connection between the roadbed and the piles is further improved, thereby improving the structural stability of the asphalt highway roadbed.

[0012] 2. The utility model provides padding between the geogrid and the support plate by setting the pad, thus preventing the geogrid from being damaged by the support plate when the geogrid is in direct contact with the support plate;

[0013] 3. The utility model increases the friction on the surface of the nut block by setting the washer, thus preventing the nut block from loosening due to external force vibration;

[0014] 4. The utility model connects the supporting plates into a whole by using the vertical rods, the inclined rods and the welding rods, thereby further improving the structural stability of the pile body when inserted into the ground. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] in:

[0016] Figure 1 This is a structural diagram of an embodiment of the utility model;

[0017] Figure 2 This is an embodiment of the utility model Figure 1 A partial enlarged view of point A;

[0018] Figure 3 This is an embodiment of the utility model Figure 1 A partial enlarged view of point B in the middle.

[0019] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0020] 1. Pile body, 2. Support plate, 3. Geogrid, 4. Sand and gravel layer, 5. Perforation, 6. Threaded rod, 7. Spacer, 8. Structural adhesive layer, 9. Nut block, 10. Washer, 11. Vertical pole, 12. Diagonal pole, 13. Welded pole, 14. Inserted pole, 15. Road base. DETAILED DESCRIPTION

[0021] Hereinafter, embodiments of the asphalt highway subgrade anti-collapse structure of the present invention will be described with reference to the accompanying drawings.

[0022] Example 1:

[0023] Figure 1-3 The asphalt highway subgrade anti-collapse structure of an embodiment of the present invention is shown, which includes a pile body 1: the top of the pile body 1 is fixedly connected to a support plate 2, a geogrid 3 is arranged above the support plate 2, a sand and gravel layer 4 is laid on the top of the geogrid 3, a through-hole 5 is opened on the top of the support plate 2, a threaded rod 6 is arranged through the top of the geogrid 3, and a pad 7 is provided on the surface of the threaded rod 6. The pad 7 is a rubber pad. Through the setting of the pad 7, the geogrid 3 and the support plate 2 are padded to prevent the geogrid 3 from being damaged by the latter when the geogrid 3 is in direct contact with the support plate 2. A structural adhesive layer 8 is filled between the inner wall of the through-hole 5 and the threaded rod 6. The surface of the threaded rod 6 is threadedly connected to two symmetrically arranged nut blocks 9. The surface of the threaded rod 6 is provided with a washer 10. The washer 10 is an elastic washer. Through the setting of the washer 10, the friction on the surface of the nut block 9 is increased, and the nut block 9 is prevented from loosening due to external force vibration. A roadbed layer 15 is provided on the top of the sand and gravel layer 4.

[0024] Example 2:

[0025] Figure 1-3 The asphalt highway subgrade anti-collapse structure of an embodiment of the present invention is shown, which includes a pile body 1: a support plate 2 is fixedly connected to the top of the pile body 1, a geogrid 3 is arranged above the support plate 2, a sand and gravel layer 4 is laid on the top of the geogrid 3, a through-hole 5 is opened on the top of the support plate 2, a threaded rod 6 is penetrated above the geogrid 3, a structural adhesive layer 8 is filled between the inner wall of the through-hole 5 and the threaded rod 6, and two symmetrically arranged nut blocks 9 are threadedly connected on the surface of the threaded rod 6. A vertical rod 11 is welded to the top of the support plate 2, an inclined rod 12 is welded to the surface of the vertical rod 11, and a welding rod 13 is welded between the vertical rod 11 and the inclined rod 12. Through the coordinated use of the vertical rod 11, the inclined rod 12 and the welding rod 13, the support plate 2 is connected as a whole, which further improves the structural stability of the pile body 1 inserted into the ground, an insertion rod 14 is welded on the surface of the pile body 1, and the bottom end of the insertion rod 14 is conical. A roadbed layer 15 is provided on the top of the sand and gravel layer 4.

[0026] Working principle: When the present invention is used, the user inserts and fixes the soil under the roadbed 15 through the pile body 1 and the support plate 2, so that the firmness of the soil under the roadbed 15 is improved. At the same time, the geogrid 3 is fixedly connected to the support plate 2 by the use of the threaded rod 6 and the nut block 9. The laying of the sand and gravel layer 4 enables the geogrid 3 to strongly support the roadbed 15. The setting of the structural adhesive layer 8 further improves the stability of the connection between the threaded rod 6 and the support plate 2, so that the geogrid 3 is firmly connected to the support plate 2. The setting of the insertion rod 14 increases the contact area between the pile body 1 and the soil, further improves the stability of the position of the pile body 1, and realizes the insertion of piles into the soil at the bottom of the roadbed, so that the underground supports the roadbed, and the laying of geogrids between the pile body and the roadbed further improves the stability of the connection between the roadbed and the pile body, thereby improving the structural stability of the asphalt highway roadbed.

[0027] To sum up: the asphalt highway subsidence prevention structure uses piles 1 and support plates 2 to insert and fix the soil under the roadbed 15, and at the same time, the geogrid 3 and the support plate 2 are fixedly connected by the use of threaded rods 6 and nut blocks 9, and the laying of the sand and gravel layer 4 enables the geogrid 3 to provide strong support for the roadbed 15, so as to achieve the purpose of inserting piles into the soil at the bottom of the roadbed, so that the underground supports the roadbed, and the geogrid is laid between the pile body and the roadbed, so that the connection stability between the roadbed and the pile body is further improved, thereby improving the structural stability of the asphalt highway subgrade.

Claims

1. An asphalt highway subsidence prevention structure, characterized in that: The invention comprises a pile body (1) inserted into the ground: the top of the pile body (1) is fixedly connected to a supporting plate (2), a geogrid (3) is arranged above the supporting plate (2), a gravel layer (4) is laid on the top of the geogrid (3), a through-hole (5) is provided on the top of the supporting plate (2), a threaded rod (6) is arranged above the geogrid (3), a structural adhesive layer (8) is filled between the inner wall of the through-hole (5) and the threaded rod (6), two symmetrically arranged nut blocks (9) are threadedly connected to the surface of the threaded rod (6), and a roadbed (15) is arranged on the top of the gravel layer (4).

2. The asphalt highway subsidence prevention structure according to claim 1, characterized in that: A pad (7) is sleeved on the surface of the threaded rod (6), and the pad (7) is a rubber pad.

3. The asphalt highway subsidence prevention structure according to claim 2, characterized in that: A washer (10) is sleeved on the surface of the threaded rod (6), and the washer (10) is an elastic washer.

4. The asphalt highway subsidence prevention structure according to claim 3, characterized in that: A vertical rod (11) is welded to the top end of the support plate (2), an oblique rod (12) is welded to the surface of the vertical rod (11), and a welding rod (13) is welded between the vertical rod (11) and the oblique rod (12).

5. The asphalt highway subsidence prevention structure according to claim 4, characterized in that: An inserting rod (14) is welded to the surface of the pile body (1), and the bottom end of the inserting rod (14) is tapered.

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