Soil nailing wall supporting structure

Abstract

The utility model discloses a soil nailing wall supporting structure which comprises a foundation pit body, a supporting groove, a soil nailing part and a reinforcing mesh, and the soil nailing part comprises a soil nailing pipe used for being inserted into the supporting groove; the soil nailing rod is arranged in the soil nailing pipe in a sliding and penetrating mode and used for being nailed into a soil body; the retaining mechanism is arranged between the soil nail rod and the soil nail pipe and is used for limiting the soil nail rod to retreat; the multiple expansion plates are fixed to the ends of the soil nailing pipe, the multiple expansion plates are arranged in the circumferential direction of the soil nailing pipe at equal intervals, and the end, away from the soil nailing pipe, of each expansion plate is fixedly connected with a limiting clamping jaw; the control piece is arranged between the soil nail rod and the soil nail pipe; the control piece is used for enabling the ends, away from the soil nailing pipe, of the multiple expansion plates to expand outwards and enabling the multiple limiting clamping jaws to be nailed into the soil body. The connecting stability of the soil nail part and the soil body can be improved, and therefore the supporting strength of the supporting structure is improved.

Description

Technical Field

[0001] The utility model relates to the field of support structures, and particularly relates to a soil nailing wall support structure. Background Art

[0002] The soil nailing wall support structure is a slope support device with soil nails as the main load-bearing members. A mechanical drilling device is used to open support grooves on the slope surface of the foundation pit. The soil nail part is inserted into the support groove, and cement slurry is poured into the support groove. Then, a steel mesh is installed on the slope surface, and 80-100 mm of concrete is sprayed to combine the soil body, steel bars and the sprayed concrete panel.

[0003] However, in the soil nailing wall support structure in the related art, only relying on the soil nail part to be nailed into the soil body and fixing the soil nail part and the soil body through grouting, the connection stability between the soil nail part and the soil body is poor, so the support strength needs to be improved. Summary of the Utility Model

[0004] Aiming at the deficiencies of the existing technology, the purpose of the utility model is to provide a soil nailing wall support structure, which can improve the connection stability between the soil nail part and the soil body, thereby improving the support strength.

[0005] The above technical purpose of the utility model is achieved through the following technical solutions: a soil nailing wall support structure, including a foundation pit main body, a support groove, a soil nail part and a steel mesh, and the soil nail part includes:

[0006] A soil nail pipe for inserting into the support groove;

[0007] A soil nail rod slidably passing through the soil nail pipe and used for nailing into the soil body;

[0008] An anti-retreat mechanism arranged between the soil nail rod and the soil nail pipe and used for restricting the backward movement of the soil nail rod;

[0009] Expansion plates, the number of which is multiple and are respectively fixed at the ends of the soil nail pipe. The multiple expansion plates are arranged at equal intervals along the circumferential direction of the soil nail pipe, and one end of each expansion plate far away from the soil nail pipe is respectively fixedly connected with a limit claw;

[0010] A control member arranged between the soil nail rod and the soil nail pipe;

[0011] Wherein, the control member is used to make one end of each of the multiple expansion plates far away from the soil nail pipe expand outwards respectively, and make each of the multiple limit claws nail into the soil body.

[0012] In a preferred embodiment, the present utility model can be further configured as follows: The control member includes a control ring fixedly sleeved on the soil nail rod. Control blocks are respectively fixedly connected to one side of the plurality of expansion plates that are close to each other. When the soil nail rod is driven into the soil body, the expansion plates can expand outwards under the action of the control ring and the corresponding control blocks.

[0013] In a preferred embodiment, the present utility model can be further configured as follows: The anti-retreat mechanism includes a plurality of elastic anti-retreat inclined teeth respectively fixed on the soil nail rod. The plurality of anti-retreat inclined teeth are arranged at equal intervals along the circumferential direction of the soil nail rod. A plurality of anti-retreat tooth rings are fixedly connected to the inner wall of the soil nail pipe. The plurality of anti-retreat tooth rings are arranged at equal intervals along the axial direction of the soil nail pipe, and the plurality of anti-retreat inclined teeth can be clamped and limited with any one of the anti-retreat tooth rings.

[0014] In a preferred embodiment, the present utility model can be further configured as follows: A plurality of receiving rings are fixedly sleeved on the soil nail pipe. The plurality of receiving rings are arranged at equal intervals along the axial direction of the soil nail pipe. The receiving rings are in abutting fit with the inner wall of the support groove, so as to form a grouting ring cavity between the soil nail pipe and the support groove. A plurality of grouting holes are respectively formed in each receiving ring.

[0015] In a preferred embodiment, the present utility model can be further configured as follows: A plurality of communication holes are formed in the soil nail pipe, so that cement slurry can enter the soil nail pipe.

[0016] In a preferred embodiment, the present utility model can be further configured as follows: A limiting column is fixedly connected to the end of the soil nail rod, and the limiting column can pass through the mesh holes of the steel bar mesh.

[0017] In summary, the present utility model has the following beneficial effects:

[0018] 1. By expanding outwards and pressing tightly against the soil by the plurality of expansion plates, and the limiting claws on the plurality of expansion plates are respectively driven into the soil body, the connection stability and the connection structure strength between the soil nail part and the soil body are improved, thereby improving the support strength of the support structure;

[0019] 2. Cement slurry can be poured into the space between the support groove and the soil nail pipe, and can enter the soil nail pipe, thereby improving the connection structure strength between the soil body and the soil nail part, and further improving the use stability of the support structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural diagram of the embodiment;

[0021] Figure 2 is a cross-sectional view of the soil nail part in the embodiment.

[0022] Figure numerals: 1. foundation pit main body; 2. support groove; 3. soil nail part; 31. soil nail pipe; 32. soil nail rod; 33. expansion plate; 34. limit claw; 4. steel mesh; 5. backstop mechanism; 51. backstop bevel tooth; 52. backstop tooth ring; 6. control part; 61. control ring; 62. control block; 7. receiving ring; 8. grouting ring cavity; 9. grouting hole; 10. connecting hole; 11. limit column. DETAILED DESCRIPTION

[0023] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0024] Reference Figure 1 , Figure 2 A soil nail wall support structure includes a foundation pit main body 1, a soil nail part 3 and a steel mesh 4. A support groove 2 is opened on the slope surface of the foundation pit main body 1, the soil nail part 3 is inserted into the support groove 2, and the steel mesh 4 can be fixed on the slope surface of the foundation pit main body 1.

[0025] Reference Figure 1 , Figure 2 The soil nailing part 3 includes a soil nailing tube 31, and the soil nailing tube 31 is used to be inserted into the supporting groove 2. A soil nailing rod 32 is slidably penetrated in the soil nailing tube 31, and the soil nailing rod 32 is used to be nailed into the soil. At the same time, a back-stopping mechanism 5 is provided between the soil nailing rod 32 and the soil nailing tube 31. When the soil nailing rod 32 is nailed into the soil, the back-stopping mechanism 5 is used to limit the back-moving of the soil nailing rod 32, so as to realize the fixed connection between the soil nailing rod 32 and the soil nailing tube 31.

[0026] Reference Figure 1 , Figure 2 The end of the soil nail tube 31 is fixedly connected with a plurality of expansion plates 33, which are arranged at equal intervals along the circumference of the soil nail tube 31, and one end of each expansion plate 33 away from the soil nail tube 31 is fixedly connected with a limit clamp 34. At the same time, a control member 6 for controlling the outward expansion of the plurality of expansion plates 33 is provided between the soil nail rod 32 and the soil nail tube 31.

[0027] The soil nail tube 31 is inserted into the support groove 2, and the multiple expansion plates 33 are respectively abutted against the bottom of the support groove 2, and then the soil nail rod 32 is inserted into the soil nail tube 31, and the soil nail rod 32 is hammered and nailed into the soil body. At this time, the retreat mechanism 5 restricts the retreat of the soil nail rod 32. At the same time, the control member 6 makes the ends of the multiple expansion plates 33 away from the soil nail tube 31 bend and expand outward, and the multiple limit claws 34 are respectively nailed into the soil body, and then cement slurry can be poured into the support groove 2.

[0028] By utilizing multiple expansion plates 33 to expand outward and press against the ground, and the limiting claws 34 on the multiple expansion plates 33 are respectively nailed into the soil, the connection stability and connection structure strength between the soil nail part 3 and the soil are effectively improved, thereby improving the support strength of the support structure.

[0029] Referring to Figure 1 and Figure 2 , the control member 6 includes a control ring 61 fixedly sleeved on the soil nailing rod 32, and control blocks 62 are fixedly connected to one sides of the plurality of expansion plates 33 close to each other. When the soil nailing rod 32 is nailed into the soil body, the expansion plates 33 can be bent and expanded outwards under the action of the control ring 61 and the corresponding control blocks 62. This design enables the expansion plates 33 to automatically expand outwards during the process of the soil nailing rod 32 being nailed into the soil body, improving the linkage cooperation effect among various components.

[0030] Referring to Figure 1 and Figure 2 , the anti-retreat mechanism 5 includes a plurality of elastic anti-retreat inclined teeth 51 respectively fixed on the soil nailing rod 32. The plurality of anti-retreat inclined teeth 51 are arranged at equal intervals along the circumferential direction of the soil nailing rod 32. A plurality of anti-retreat tooth rings 52 are fixedly connected to the inner wall of the soil nailing pipe 31. The plurality of anti-retreat tooth rings 52 are arranged at equal intervals along the axial direction of the soil nailing pipe 31, and the plurality of anti-retreat inclined teeth 51 can be clamped and limited with any one of the anti-retreat tooth rings 52 to limit the backward movement of the soil nailing rod 32.

[0031] Referring to Figure 1 and Figure 2 , a plurality of receiving rings 7 are fixedly sleeved on the soil nailing pipe 31. The plurality of receiving rings 7 are arranged at equal intervals along the axial direction of the soil nailing pipe 31. The receiving rings 7 are in abutting and cooperating with the inner wall of the support groove 2, so as to form a grouting ring cavity 8 between the soil nailing pipe 31 and the support groove 2. At the same time, a plurality of grouting holes 9 are respectively formed in each receiving ring 7, and a plurality of communication holes 10 are formed in the soil nailing pipe 31.

[0032] Pour cement slurry into the grouting ring cavity 8, and the cement slurry flows through the plurality of grouting holes 9 until the grouting ring cavity 8 is filled with cement slurry. During this process, the cement slurry can enter the soil nailing pipe 31 through the communication holes 10. At the same time, when the cement slurry solidifies, a cement column can be formed in the communication holes 10, and the cement column connects the grouting ring cavity 8 with the cement structure inside the soil nailing pipe 31, thereby improving the connection stability between the soil nailing part 3 and the soil body.

[0033] Referring to Figure 1 and Figure 2 , a limit column 11 is fixedly connected to the end of the soil nailing rod 32, and the limit column 11 can pass through the mesh holes of the steel mesh 4. That is, when the steel mesh 4 is suspended on the slope of the foundation pit main body 1, the limit column 11 can limit the steel mesh 4, so as to facilitate the fixing operation of the steel mesh 4 by the staff.

[0034] The specific embodiments are only explanations of the present utility model, and they do not limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without creative contributions as needed, but as long as they are within the scope of the claims of the present utility model, they are protected by the patent law.

Claims

1. A soil nail wall support structure, comprising a foundation pit body (1), a support groove (2), a soil nail part (3) and a steel mesh (4), characterized in that: The soil nail part (3) comprises: A soil nail tube (31) is used to be inserted into the support groove (2); A soil nail rod (32) is slidably disposed in the soil nail tube (31) and is used to be nailed into the soil; A retreat-stopping mechanism (5) is arranged between the soil nail rod (32) and the soil nail tube (31) and is used to limit the retreat of the soil nail rod (32); There are multiple expansion plates (33) which are respectively fixed to the ends of the soil nail tube (31); the multiple expansion plates (33) are arranged at equal intervals along the circumference of the soil nail tube (31); and one end of each expansion plate (33) away from the soil nail tube (31) is respectively fixedly connected to a limiting claw (34); A control member (6) is arranged between the soil nail rod (32) and the soil nail tube (31); The control member (6) is used to make the ends of the plurality of expansion plates (33) away from the soil nail tube (31) expand outwards respectively, and make the plurality of limit claws (34) be nailed into the soil respectively.

2. A soil nail wall support structure according to claim 1, characterized in that: The control member (6) comprises a control ring (61) fixedly mounted on the soil nail rod (32); a plurality of expansion plates (33) are respectively fixedly connected to control blocks (62) on the sides close to each other; when the soil nail rod (32) is nailed into the soil, the expansion plates (33) can expand outwards under the action of the control ring (61) and the corresponding control blocks (62).

3. The soil nail wall support structure according to claim 1, characterized in that: The anti-retreat mechanism (5) comprises a plurality of elastic anti-retreat bevel teeth (51) respectively fixed on the soil nail rod (32), the plurality of anti-retreat bevel teeth (51) are arranged at equal intervals along the circumference of the soil nail rod (32), the inner wall of the soil nail tube (31) is fixedly connected with a plurality of anti-retreat tooth rings (52), the plurality of anti-retreat tooth rings (52) are arranged at equal intervals along the axial direction of the soil nail tube (31), and the plurality of anti-retreat bevel teeth (51) can be engaged with any of the anti-retreat tooth rings (52) to limit the position.

4. The soil nail wall support structure according to claim 1, characterized in that: A plurality of receiving rings (7) are fixedly sleeved on the soil nail tube (31), and the plurality of receiving rings (7) are arranged at equal intervals along the axial direction of the soil nail tube (31). The receiving rings (7) are in abutment with the inner wall of the support groove (2) to form a grouting ring cavity (8) between the soil nail tube (31) and the support groove (2), and each receiving ring (7) is respectively provided with a plurality of grouting holes (9).

5. A soil nail wall support structure according to claim 4, characterized in that: The soil nail pipe (31) is provided with a plurality of communication holes (10) so that cement slurry can enter the soil nail pipe (31).

6. The soil nail wall support structure according to claim 1, characterized in that: The end of the soil nail rod (32) is fixedly connected to the limiting column (11), and the limiting column (11) can pass through the mesh of the steel mesh (4).

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