Soil nailing positioning device in soil nailing wall support

Abstract

The utility model discloses a soil nail positioning device in a soil nail wall support, which belongs to the technical field of foundation pit slope support and comprises a soil nail, a support ring for supporting the soil nail, a positioning rod for fixing the soil nail and a frame for limiting the support ring. The two straight rods are fixedly connected with the inner wall of the supporting circular ring, the ends, away from the supporting circular ring, of the two straight rods are fixedly connected with the two ends of an arc rod respectively, the supporting circular ring is placed in the frame, and the soil nails are fixedly connected into the arc rod. The supporting circular ring and the soil nail are connected into a whole through the positioning rod, so that the soil nail achieves a better centering effect, is not easy to deform, is stable and reliable, and ensures the anchoring effect of the soil nail.

Description

Technical Field

[0001] The utility model belongs to the technical field of foundation pit slope support, in particular to a soil nail positioning device in soil nail wall support. Background Art

[0002] At present, soil nail wall support is a widely used in-situ soil reinforcement technology in foundation pit projects. In order to ensure that the soil nails meet the design requirements, the thickness of the protective layer around the soil nails should be relatively uniform as much as possible, so the soil nails need to be placed in the center of the soil nail holes as much as possible.

[0003] At present, the ship-shaped locator commonly used on construction sites is to bend the steel bar into a concave shape, and then weld three ship-shaped locators on the soil nails at intervals of 120 degrees to center the soil nails. However, this method not only consumes more steel bars, but also has complicated construction operations and it is difficult to ensure the construction quality. Utility Model Content

[0004] In view of the problems existing in the prior art, the utility model provides a soil nail positioning device in a soil nail wall support, which has the advantages of achieving a better centering effect for the soil nails, not being easy to deform, being stable and reliable, and ensuring the anchoring effect of the soil nails. It solves the problem that the ship-shaped positioner commonly used in existing construction sites is to bend the steel bars into a concave shape, and then weld three ship-shaped positioners on the soil nails at intervals of 120 degrees, so that the soil nails are centered. However, this method not only consumes more steel bars, but also has complicated construction operations and it is difficult to ensure the construction quality.

[0005] The utility model is implemented as follows: a soil nail positioning device in a soil nail wall support comprises a soil nail, a supporting ring for supporting the soil nail, a positioning rod for fixing the soil nail, and a frame for limiting the supporting ring, wherein the positioning rod comprises two straight rods and an arc rod, the two straight rods are both fixedly connected to the inner wall of the supporting ring, one end of the two straight rods away from the supporting ring is respectively fixedly connected to the two ends of the arc rod, the supporting ring is placed in the frame, the soil nail is fixedly connected in the arc rod, and one end of the two straight rods adjacent to the supporting ring is fixedly connected to the side wall of the soil nail.

[0006] As a preferred embodiment of the present invention, the center lines of the two straight rods can coincide with any diameter of the supporting ring.

[0007] As a preferred embodiment of the present invention, the inner diameter of the arc rod is 0.01 mm-0.02 mm larger than the diameter of the soil nail.

[0008] As a preferred embodiment of the present invention, the center of the arc rod coincides with the center of the supporting ring.

[0009] As a preferred embodiment of the present invention, the frame includes a limiting shell and a connecting rod, the supporting ring is placed in the limiting shell, and the connecting rod is fixedly connected to the side wall of the limiting shell.

[0010] As a preferred embodiment of the utility model, a fixing rod is welded and fixed inside the supporting ring, and the side wall of the fixing rod is welded and fixed to the side wall of the soil nail.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0012] 1. The utility model connects the supporting ring and the soil nail into a whole through the positioning rod, so that the soil nail achieves a better centering effect, is not easy to deform, is stable and reliable, and ensures the anchoring effect of the soil nail.

[0013] 2. The utility model can limit the support ring by using a frame, so as to avoid the support ring moving when the arc rod is welded with the soil nail without support, thereby affecting the centering effect of the soil nail. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram provided by an embodiment of the utility model;

[0015] Figure 2 It is an axonometric schematic diagram of a support ring provided in an embodiment of the utility model;

[0016] Figure 3 It is a schematic diagram of the connection between the soil nail and the arc rod provided in the embodiment of the utility model.

[0017] In the figure: 1. soil nail; 2. supporting ring; 3. positioning rod; 4. frame; 5. straight rod; 6. arc rod; 7. limit shell; 8. connecting rod; 9. fixing rod. DETAILED DESCRIPTION

[0018] In order to further understand the content, features and effects of the utility model, the following embodiments are given as examples and described in detail with reference to the accompanying drawings.

[0019] The structure of the utility model is described in detail below in conjunction with the accompanying drawings.

[0020] See also Figure 1 , Figure 2 and Figure 3The present invention provides a soil nail positioning device in a soil nail wall support, comprising a soil nail 1, a supporting ring 2 for supporting the soil nail 1, a positioning rod 3 for fixing the soil nail 1, and a frame 4 for limiting the supporting ring 2, wherein the positioning rod 3 comprises two straight rods 5 and an arc rod 6, wherein the two straight rods 5 are fixedly connected to the inner wall of the supporting ring 2, and one end of the two straight rods 5 away from the supporting ring 2 is fixedly connected to the two ends of the arc rod 6 respectively, the supporting ring 2 is placed in the frame 4, the soil nail 1 is fixedly connected in the arc rod 6, and one end of the two straight rods 5 adjacent to the supporting ring 2 is fixedly connected to the side wall of the soil nail 1.

[0021] It should be noted that the soil nail 1 is fixed to the inner circle of the arc rod 6 by welding, one end of the two straight rods 5 is fixed to the side wall of the soil nail 1 by welding, and the other end of the two straight rods 5 is fixed to the inner wall of the supporting ring 2 by welding. By welding the arc rod 6 and the straight rod 5 to the soil nail 1, the firmness of the soil nail 1 after welding can be effectively improved;

[0022] The supporting ring 2, the straight rod 5 and the arc rod 6 are all configured as plain round steel bars, and the diameter is set to 6-8 mm.

[0023] By adopting the above scheme, the arc rod 6 is welded and fixed to the soil nail 1, and the supporting ring 2 and the soil nail 1 are connected into a whole, so that the soil nail 1 achieves a better centering effect, is not easy to deform, is stable and reliable, and ensures the anchoring effect of the soil nail 1. It is simple and reliable, and ensures the reliability of the soil nail wall support.

[0024] refer to Figure 2 and Figure 3 The center lines of the two straight rods 5 can coincide with any diameter of the support ring 2 , the inner diameter of the arc rod 6 is 0.01mm-0.02mm larger than the diameter of the soil nail 1 , and the center of the arc rod 6 coincides with the center of the support ring 2 .

[0025] refer to Figure 1 The frame 4 includes a limiting shell 7 and a connecting rod 8 , the supporting ring 2 is placed in the limiting shell 7 , and the connecting rod 8 is fixedly connected to the side wall of the limiting shell 7 .

[0026] It should be noted that a notch is provided on the side of the limiting shell 7 for the soil nail 1 to pass through;

[0027] Two connecting rods 8 are provided, and the two connecting rods 8 are symmetrically arranged relative to the central axis of the limiting shell 7.

[0028] By adopting the above scheme, through the use of the limiting shell 7 and the connecting rod 8, after the supporting ring 2 is placed in the limiting shell 7, the supporting ring 2 can be limited. When the soil nail 1 is welded and fixed to the arc rod 6, the supporting ring 2 can be prevented from being skewed, thereby ensuring the limiting effect of the supporting ring 2 on the soil nail 1 and the centering effect of the soil nail 1.

[0029] Referring to the figure, a fixing rod 9 is welded and fixed inside the supporting ring 2 , and the side wall of the fixing rod 9 is welded and fixed to the side wall of the soil nail 1 .

[0030] By adopting the above scheme, the soil nail 1 is welded and fixed to the arc rod 6 and the straight rod 5 through the use of the fixing rod 9, and then the fixing rod 9 is welded to the supporting ring 2 and the soil nail 1, so as to further improve the firmness of the soil supporting ring 2 fixing the soil nail 1 and ensure the anchoring effect of the soil nail 1.

[0031] The working principle of this utility model:

[0032] When in use, first place the supporting ring 2 in the limiting shell 7, and after the supporting ring 2 is positioned, insert the soil nail 1 into the circular hole formed by the arc rod 6, and then weld the soil nail 1 to the arc rod 6. After welding, insert the whole connected by the soil nail 1 and the arc rod 6 together with the grouting pipe into the soil nail hole. After reaching the designated depth, grouting is performed while pulling out the grouting pipe.

[0033] It should be noted that the insertion position of the grouting pipe is Figure 2 Indicated by dotted line.

[0034] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A soil nail positioning device in a soil nail wall support, comprising a soil nail (1), a supporting ring (2) supporting the soil nail (1), a positioning rod (3) fixing the soil nail (1), and a frame (4) for limiting the position of the supporting ring (2), characterized in that: The positioning rod (3) comprises two straight rods (5) and an arc rod (6); the two straight rods (5) are fixedly connected to the inner wall of the supporting ring (2); one end of the two straight rods (5) away from the supporting ring (2) is fixedly connected to the two ends of the arc rod (6); the supporting ring (2) is placed in the frame (4); the soil nail (1) is fixedly connected to the arc rod (6); and one end of the two straight rods (5) adjacent to the supporting ring (2) is fixedly connected to the side wall of the soil nail (1).

2. The soil nail positioning device in soil nail wall support according to claim 1, characterized in that: The center lines of the two straight rods (5) can coincide with any diameter of the supporting ring (2).

3. The soil nail positioning device in soil nail wall support according to claim 1, characterized in that: The inner diameter of the arc rod (6) is 0.01 mm to 0.02 mm larger than the diameter of the soil nail (1).

4. The soil nail positioning device in soil nail wall support according to claim 1, characterized in that: The center of the circular arc rod (6) coincides with the center of the supporting ring (2).

5. The soil nail positioning device in soil nail wall support according to claim 1, characterized in that: The frame (4) comprises a limiting shell (7) and a connecting rod (8), the supporting ring (2) is placed in the limiting shell (7), and the connecting rod (8) is fixedly connected to the side wall of the limiting shell (7).

6. The soil nail positioning device in soil nail wall support according to claim 1, characterized in that: A fixing rod (9) is welded and fixed inside the supporting ring (2), and the side wall of the fixing rod (9) is welded and fixed to the side wall of the soil nail (1).

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