CN218813688U - Spiral soil nail centering and positioning device - Google Patents
Spiral soil nail centering and positioning device Download PDFInfo
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- CN218813688U CN218813688U CN202222994635.0U CN202222994635U CN218813688U CN 218813688 U CN218813688 U CN 218813688U CN 202222994635 U CN202222994635 U CN 202222994635U CN 218813688 U CN218813688 U CN 218813688U
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- soil nail
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- screw
- centering
- positioning device
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Abstract
The utility model discloses a spiral soil nail centering positioner, including connecting spiral location muscle and the support column on the soil nail, spiral location muscle is including continuous preceding linkage segment, middle spiral section and back linkage segment, a plurality of spiral location muscle is through preceding, back linkage segment is along soil nail axial fixity, support middle spiral section through the support column and follow soil nail radial fixity, it is spacing along soil nail axial fixity with the slip casting pipe, it is easy to warp to have solved soil nail location when implanting, easily imbed soil layer around the soil nail hole, the difficult problem of realizing the centering location of soil nail, the device has soil nail location effectually, the firm characteristics of anchor.
Description
Technical Field
The utility model belongs to normal position soil body adds muscle technique, especially a spiral soil nail centering positioner.
Background
The soil nailing wall is an in-situ soil body reinforcement technology and is widely applied to foundation pit engineering. In the process of constructing the soil nailing wall, the accurate positioning of the soil nails is one of the important factors influencing the supporting effect of the soil nailing wall. In 5.3.4 clear regulations in the technical code of building foundation pit support, centering and positioning brackets are arranged along the whole length of the soil nail, and the distance between the centering and positioning brackets is preferably 1.5-2.5 m. Therefore, the reasonable arrangement of the soil nail positioning bracket is very important.
One of the most common methods for positioning soil nails in the prior art is to bend a section of small-diameter steel bar into an arc shape, weld the steel bar to the soil nail and distribute the steel bar in a 120-degree annular shape, and position the soil nail through the support of the steel bar (CN 203373744U); according to the soil nail positioning mode, when the soil nail is placed in the soil nail hole, the small-diameter steel bars are easy to deform and easily embedded into the soil layer around the soil nail hole, and the centering positioning of the soil nail is difficult to realize, so that the anchoring effect of the soil nail is influenced. In addition, binding type sleeves and a central support (CN 212612456U), Y-shaped structure limiting rods (CN 214993895U), binding type Z-shaped centering steel bars (CN 215165537U) and the like are adopted to position the soil nails, but the problems that the soil nails are difficult to be placed into soil nail holes or the steel bar supports are easy to deform exist. The prefabricated soil nail positioner disclosed by the patent CN210917351U, CN 211395695U, CN 211395693U has the defects of complex manufacture, high cost and the like, and is difficult to popularize in practical engineering.
SUMMERY OF THE UTILITY MODEL
For solving the above-mentioned defect that exists among the prior art, the utility model aims to provide a convenient, reliable spiral soil nail centering positioner, through along soil nail axial distribution a plurality of spiral location muscle and support column, realize with the slip casting pipe along soil nail axial fixity spacingly, be convenient for realize the centering location of soil nail, and then improve the anchor effect of soil nail.
The utility model discloses a realize through following technical scheme.
The utility model provides a spiral soil nail centering positioner, including connecting spiral location muscle and the support column on the soil nail, spiral location muscle includes continuous preceding linkage segment, middle spiral section and back linkage segment, and a plurality of spiral location muscle is through preceding, back linkage segment along soil nail axial fixity, supports middle spiral section along soil nail radial fixation through the support column, and it is spacing to follow soil nail axial fixity with the slip casting pipe, inserts that the soil nail is downthehole.
Preferably, the two ends of the spiral positioning rib are bent inwards to form a front connecting section and a rear connecting section, the front connecting section and the rear connecting section and the middle spiral section continuously encircle the soil nails, and the front end face and the rear end face of the spiral positioning rib are respectively welded with the soil nails.
Preferably, the end parts of the front and rear connecting sections are respectively connected to the middle parts of the front and rear end faces of the soil nail.
Preferably, the projections of the front connecting section and the rear connecting section on the cross section of the soil nail are mutually symmetrical along the vertical direction.
Preferably, the projections of the front connecting section and the rear connecting section in the length direction of the soil nail are mutually symmetrical by taking the straight line of the supporting column as a symmetry axis.
Preferably, the support columns are fixed on the symmetry axes of the front connecting section and the rear connecting section, and the axial center lines of the support columns are perpendicular to the axial center line of the soil nail.
Preferably, the support column is vertically connected between the outer part of the soil nail and the inner end of the middle spiral section with the largest diameter.
Preferably, the maximum external diameter of the spiral ring of the spiral positioning rib is slightly smaller than the diameter of the soil nail hole.
Preferably, all support columns are located on the same straight line on the same side in the soil nail length direction.
The utility model discloses owing to take above technical scheme, it has following beneficial effect:
1. the utility model discloses a support column is connected spiral location muscle and soil nail as a whole, and structure global rigidity is great, and is reliable and stable during the use, produces hardly and warp, can play fine location effect.
2. The maximum external diameter of the screw ring of the middle spiral positioning rib of the utility model is slightly smaller than the diameter of the soil nail hole, so that the installed soil nail can be conveniently put into the soil nail hole; adopt spiral structure, if meet the position that hinders this spiral soil nail positioner of rotatory soil nail adjustment of accessible when soil nail inserts soil nail hole, the soil nail of being convenient for inserts smoothly.
3. The utility model discloses all support columns all lie in soil nail length direction on same one side same straight line when using, can guarantee that this spiral soil nail positioner leaves certain space in the same position of soil nail one side after the installation, play limiting displacement for the slip casting pipe in the follow-up slip casting construction.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, do not constitute a limitation of the invention, and in which:
fig. 1 is a schematic structural view of a spiral soil nail centering and positioning device of the present invention;
FIG. 2 is a front view of the screw type soil nail centering and positioning device of the present invention;
FIG. 3 is a side view of the screw type soil nail centering and positioning device of the present invention;
fig. 4 is the utility model relates to a structural schematic diagram after spiral soil nail centering positioner's installation.
In the figure: 1. preceding linkage segment, 2, back linkage segment, 3 are middle spiral section, 4 are the support column, 5 are soil nail, 6 are the slip casting pipe.
Detailed Description
The present invention will be described in detail with reference to the drawings and specific embodiments, wherein the exemplary embodiments and descriptions are provided to explain the present invention, but not to limit the present invention.
As shown in fig. 1-4, the structure of the screw-type soil nail centering and positioning device of the present invention is shown, which comprises a screw positioning rib connected to a soil nail 5 and a supporting column 4. The spiral location muscle includes preceding, back linkage segment 1, 2 and middle spiral section 3 at both ends, and the one end welding of preceding, back linkage segment 1, 2 is on soil nail 5's surface, and middle spiral section 3 supports the location on soil nail 5 through support column 4. The end parts of the front and rear connecting sections 1 and 2 are respectively connected to the middle parts of the front and rear end surfaces of the soil nail 5; the support column 4 is vertically connected with the outer part of the soil nail 5 and the inner end of the maximum diameter of the middle spiral section 3.
In the embodiment, the front and rear connecting sections 1 and 2 at the two ends of the spiral positioning rib and the middle spiral section 3 are of an integrated structure; the both ends incurving of spiral location muscle form preceding, back linkage segment 1, 2, and preceding, back linkage segment 1, 2 encircle soil nail with middle spiral section 3 in succession, are in the same place with soil nail 5 welded connection respectively at spiral location muscle both ends.
As shown in fig. 2 and 3, in the present embodiment, the front and rear connecting sections 1 and 2 of the spiral positioning rib have a certain radian, and the projections of the front and rear connecting sections 1 and 2 on the cross section of the soil nail 5 are mutually symmetrical along the vertical direction; the projections of the front and rear connecting sections 1 and 2 in the length direction of the soil nail 5 are symmetrical with the straight line of the support column 4 as a symmetry axis.
In the embodiment, the maximum outer diameter of the spiral ring of the middle spiral section 3 of the spiral positioning rib is 5-10 mm smaller than the diameter of the soil nail hole, the pitch of the middle spiral section 3 is 90-110 mm, and the projection length of the middle spiral section 3 in the length direction of the soil nail 5 is 120-160 mm.
In this embodiment, the material of spiral location muscle is smooth round steel bar, and the reinforcing bar diameter is 6 ~ 8mm.
In this embodiment, support column 4 adopts the diameter to be 6 ~ 8 mm's reinforcing bar to make, and the both ends of support column 4 are fixed in the outside of soil nail 5 and the inboard of spiral location muscle through the welded mode.
In the embodiment, the support column 4 is fixed on the symmetry axis of the two connecting sections 1 and 2, and the axial center line of the support column 4 is vertical to the axial center line of the soil nail 5.
As shown in fig. 4, in this embodiment, all the supporting columns 4 of the device are located on the same straight line on the same side of the soil nail 5 in the length direction when the device is used, so that a certain space is ensured to be left at the same position on one side of the soil nail 5 after the device is installed, and the limiting function is achieved for the grouting pipe 6 in the subsequent grouting construction.
The use method of the spiral soil nail positioning device comprises the following steps:
after the spiral soil nail positioning device is installed, the grouting pipe 6 is placed in a reserved space of the spiral positioning rib on one side of the soil nail, and then the soil nail 5 and the grouting pipe 6 are inserted into a soil nail hole together; if an obstruction is encountered during insertion, the screw type positioning means may be rotated from the outside so that the soil nail 5 and the grout pipe 6 are smoothly inserted into the soil nail hole.
The utility model provides a soil nail location warp easily when implanting, easily imbeds soil layer around the soil nail hole, the difficult centering location's that realizes the soil nail problem, realized that the soil nail anchor is effectual, the firm effect of anchor.
The present invention is not limited to the above embodiments, and based on the technical solutions disclosed in the present invention, those skilled in the art can make some replacements and transformations for some technical features without creative labor according to the disclosed technical contents, and these replacements and transformations are all within the protection scope of the present invention.
Claims (9)
1. The utility model provides a spiral soil nail centering positioner, its characterized in that, is including connecting spiral location muscle and the support column on the soil nail, and spiral location muscle includes continuous preceding linkage segment, middle spiral section and back linkage segment, and a plurality of spiral location muscle is through preceding, back linkage segment along soil nail axial fixity, supports middle spiral section along soil nail radial fixity through the support column, and it is spacing to follow soil nail axial fixity with the slip casting pipe, inserts soil nail downthehole.
2. The screw-type soil nail centering and positioning device according to claim 1, wherein both ends of the screw-type positioning rib are bent inwards to form a front connecting section and a rear connecting section, the front connecting section and the rear connecting section and the middle screw section continuously surround the soil nail, and the front end surface and the rear end surface of the screw-type positioning rib are respectively welded with the soil nail.
3. A screw-type soil nail centering and positioning device according to claim 2, wherein the end portions of the front and rear connecting sections are respectively connected to the middle portions of the front and rear end faces of the soil nail.
4. The screw-type soil nail centering and positioning device of claim 2, wherein the projections of the front and rear connecting sections on the cross section of the soil nail are vertically symmetrical to each other.
5. The screw-type soil nail centering and positioning device according to claim 2, wherein projections of the front and rear connecting sections in the soil nail length direction are symmetrical to each other with a straight line of the supporting column as a symmetry axis.
6. The screw-type soil nail centering and positioning device of claim 2, wherein the supporting columns are fixed on the symmetry axes of the front and rear connecting sections, and the axial center lines of the supporting columns are perpendicular to the axial center line of the soil nail.
7. A screw-type soil nail centering and positioning device according to claim 1, wherein the supporting column is vertically connected to the outer portion of the soil nail and the inner end of the middle screw section with the largest diameter.
8. The screw-type soil nail centering and positioning device of claim 1, wherein the maximum outer diameter of the spiral ring of the spiral positioning rib is slightly smaller than the diameter of the soil nail hole.
9. A screw-type soil nail centering and positioning device according to claim 1, wherein each supporting column is located on the same straight line on the same side of the soil nail in the length direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222994635.0U CN218813688U (en) | 2022-11-10 | 2022-11-10 | Spiral soil nail centering and positioning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222994635.0U CN218813688U (en) | 2022-11-10 | 2022-11-10 | Spiral soil nail centering and positioning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218813688U true CN218813688U (en) | 2023-04-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222994635.0U Active CN218813688U (en) | 2022-11-10 | 2022-11-10 | Spiral soil nail centering and positioning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218813688U (en) |
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2022
- 2022-11-10 CN CN202222994635.0U patent/CN218813688U/en active Active
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