CN210562159U - Post-grouting spiral anchor structure device - Google Patents
Post-grouting spiral anchor structure device Download PDFInfo
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- CN210562159U CN210562159U CN201921187117.XU CN201921187117U CN210562159U CN 210562159 U CN210562159 U CN 210562159U CN 201921187117 U CN201921187117 U CN 201921187117U CN 210562159 U CN210562159 U CN 210562159U
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Abstract
The utility model relates to a post-grouting spiral anchor structure device, which comprises a plurality of sections of steel pipes which are connected in sequence; the steel pipe is sleeved with a plurality of helical blades; an internal grouting steel pipe is embedded in the steel pipe; an external grouting steel pipe is embedded in the periphery of the spiral blade; a first slurry flow channel is arranged in the middle of the inner grouting steel pipe; a slurry flow channel II communicated with the slurry flow channel I is arranged in the middle of the external grouting steel pipe; a first guniting port is formed in the side wall of the steel pipe; and the external grouting steel pipe is provided with a plurality of second guniting ports. The utility model discloses a cooperation of inside mud jacking steel pipe and outside mud jacking steel pipe has effectively improved the flexibility of slip casting work and has enlarged the slip casting scope, can solve the not enough that exists among the prior art, promotes the whole bearing capacity and the back slip casting effect of screw anchor.
Description
Technical Field
The utility model relates to a spiral anchor technical field, concretely relates to back slip casting spiral anchor constructional device.
Background
Spiral anchors (or called spiral piles) are used as a basic form, and certain engineering practice applications are already available in the middle of the nineteenth century. In the early stage, the blades are additionally arranged outside the round small-diameter steel pipe, and the method is applied to coastal lighthouse foundation engineering mainly based on uplift. Later, the screw anchor gradually extends to the application in the aspects of compression resistance, horizontal load resistance and the like, and the screw anchor is particularly widely applied to the aspects of transmission line tower foundations, photovoltaic power station foundations and transportation pipeline foundations. The spiral anchor has the technical and economic characteristics of convenient construction, simple process, low construction noise, environmental friendliness and good economical efficiency.
After the spiral anchor is installed, the contact area between the spiral blade and the surrounding soil body can be increased through grouting, so that the anchoring force between the spiral anchor and the surrounding soil body is improved, and the bearing performance of the whole spiral anchor is improved. In the current practical engineering application, most of the spiral anchors perform grouting through grouting pipes, and the grouting pipes are fixed on the inner side walls of the spiral anchors through welding or screw thread connection; the guniting port is arranged at the lower part of the spiral anchor steel pipe and between the two blades, the guniting direction is single, the soil body range which can be influenced by guniting is limited, and the problem of uneven grouting is easy to occur.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a back slip casting spiral anchor constructional device, this back slip casting spiral anchor constructional device can solve exist among the prior art not enough, promotes the whole bearing capacity and the back slip casting effect of screw anchor.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a post-grouting spiral anchor structure device comprises a plurality of sections of steel pipes which are connected in sequence; the steel pipe is sleeved with a plurality of helical blades; an internal grouting steel pipe is embedded in the steel pipe; an external grouting steel pipe is embedded in the periphery of the spiral blade; a first slurry flow channel is arranged in the middle of the inner grouting steel pipe; a slurry flow channel II communicated with the slurry flow channel I is arranged in the middle of the external grouting steel pipe; a first guniting port is formed in the side wall of the steel pipe; and the external grouting steel pipe is provided with a plurality of second guniting ports.
Furthermore, a grouting steel pipe mounting groove is formed in the peripheral wall of each spiral blade; and the external grouting steel pipe is welded in the grouting steel pipe mounting groove.
Furthermore, the spiral blades are provided with connecting channels, the outer ends of the connecting channels are connected with the external grouting steel pipe, and the inner ends of the connecting channels are connected with the internal grouting steel pipe.
Furthermore, the guniting port is positioned on the steel pipe between two adjacent spiral blades.
Further, the outer diameter of the steel pipe is 10-20 cm, the wall thickness is 1-2 cm, the length of each section of steel pipe is 2-3 m, and adjacent sections of steel pipes are connected through a sleeve or welded.
Further, the helical blade is welded on the outer side wall of the lower end of the steel pipe.
Furthermore, the diameters of the inner grouting steel pipe and the outer grouting steel pipe are adaptive to the thickness of the helical blade and are 10-15 mm, so that large resistance caused by local bulge is avoided; the internal grouting steel pipe is welded on the inner wall of the steel pipe.
Further, the first slurry spraying opening and the second slurry spraying opening are both circular, and the diameters of the first slurry spraying opening and the second slurry spraying opening are both 5-10 mm; the number of the first guniting openings is 2-3; and the number of the second guniting openings is 3-5.
According to the above technical scheme, the utility model discloses inside the steel pipe that sets up of steel pipe, and the outside mud jacking steel pipe that is linked together with inside mud jacking steel pipe is set up along the helical blade periphery, set up the spouting mouth of two kinds of types simultaneously, one kind is set up the ascending spouting mouth of vertical side on the steel pipe between two helical blade, another kind is set up along the ascending spouting mouth two of helical blade circumferencial direction in the bottom of outside mud jacking steel pipe, the spouting mouth of two kinds of types combines to use, can make the spouting direction more nimble, slip casting influence range is bigger, the slip casting effect is more even relatively. The utility model has the characteristics of construction convenience, simple process, construction noise are little etc.
Drawings
FIG. 1 is a front view of the present invention (without external grouting steel pipes installed);
FIG. 2 is an enlarged schematic view of section A of FIG. 1;
fig. 3 is a top view of the present invention;
fig. 4 is a cross-sectional view of a helical blade.
Wherein:
1. the grouting device comprises a steel pipe, 2, helical blades, 3, an internal grouting steel pipe, 4, a connecting channel, 5, a grouting steel pipe mounting groove, 6, an external grouting steel pipe, 7, a second grouting opening, 8 and a first grouting opening.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings:
the post-grouting spiral anchor structure device shown in fig. 1-4 comprises a plurality of sections of steel pipes 1 which are connected in sequence; the steel pipe 1 is sleeved with a plurality of spiral helical blades 2; and an internal grouting steel pipe 3 is embedded in the steel pipe 1. An external grouting steel pipe 6 is embedded in the periphery of the helical blade 2; the design can not only avoid the increase of soil resistance caused by local protrusion, but also enlarge the grouting radius to the maximum extent. A first slurry flow channel is arranged in the middle of the inner grouting steel pipe 3; a slurry flow channel II communicated with the slurry flow channel I is arranged in the middle of the external grouting steel pipe 6; a first guniting port 8 is formed in the side wall of the steel pipe 1; and the external grouting steel pipe 6 is provided with a plurality of second guniting ports 7. Furthermore, a grouting steel pipe installation groove 5 for arranging a grouting steel pipe is formed in the outer peripheral wall of the spiral blade 2; the external grouting steel pipe 6 is welded in the grouting steel pipe mounting groove 5.
Furthermore, a connecting channel 4 is formed in the spiral blade 2, the outer end of the connecting channel 4 is connected with an external grouting steel pipe 6, and the inner end of the connecting channel is connected with an internal grouting steel pipe 3. A first through hole is formed in the steel pipe, a second through hole connected with the first through hole is formed in the spiral blade, and the two holes form a connecting channel 4. The external grouting steel pipe 6 can penetrate through the connecting channel and then is connected with the internal grouting steel pipe in a threaded mode, and the end portion of the external grouting steel pipe can also extend into the through hole II and is connected with the outer end of the connecting channel.
Further, the first guniting port 8 is positioned on the steel pipe 1 between two adjacent spiral blades 2.
Further, the outer diameter of the steel pipe 1 is 10-20 cm, the wall thickness is 1-2 cm, the length of each section of the steel pipe 1 is 2-3 m, and adjacent sections of the steel pipe 1 are connected through a sleeve or welded.
Further, the helical blade 2 is welded on the outer side wall of the lower end of the steel pipe 1.
Further, the diameters of the inner grouting steel pipe 3 and the outer grouting steel pipe 6 are adapted to the thickness of the helical blade and are both 10-15 mm; the internal grouting steel pipe 3 is welded on the inner wall of the steel pipe 1.
Further, the first guniting port 8 and the second guniting port 7 are both circular, and the diameters of the first guniting port and the second guniting port are both 5-10 mm; the number of the first guniting openings 8 is 2-3; and the number of the second guniting openings 7 is 3-5.
The utility model is suitable for a technical field such as defeated transformer tower basis, soft base are handled can promote the whole bearing capacity of spiral anchor to can practice thrift the cost. Each subassembly and the slip casting device that will prefabricate in mill are transported to the job site, and through muffjoint or field weld between a plurality of sections steel pipe 1, helical blade 2 welds in steel pipe 1 lower part, and in this embodiment, the quantity of helical blade 2 is 2. The inner grouting steel pipe 3 is welded on the inner wall of the steel pipe 1, and the outer grouting steel pipe 6 is in threaded connection with the inner grouting steel pipe 1 at the connecting passage 4. And after the installation is finished, a second guniting port 7 is arranged on the external grouting steel pipe 6 at the outer edge of the spiral blade 2 in a beating mode, and the direction and the number of the arranged guniting ports are determined according to engineering requirements. After the second guniting port 7 is drilled, the steel pipe 1 with the helical blades 2 is penetrated into the soil body through mechanical screwing or manual screwing. And grouting work is carried out after soil body penetration is finished, grout enters a grout flow channel I from an internal grouting steel pipe 5 and flows downwards along the grout flow channel I, when the grout flows through the joint of the internal grouting steel pipe 5 and an external grouting steel pipe 6 on the helical blade 2, part of the grout can enter a grout flow channel II on the helical blade 2 through a connecting channel 4 and flows along the grout flow channel II and is sprayed out to the peripheral soil body from a grout spraying port II 7, other grout can continuously flow downwards, when the grout flows through a grout spraying port I8, the grout can be sprayed out to the soil body from the grout spraying port I8, the grout sprayed to the peripheral soil body can play a role in strengthening the soil body, and after the grout is solidified, grouting spiral anchor construction is finished. The utility model discloses a cooperation of inside mud jacking steel pipe and outside mud jacking steel pipe has effectively improved the flexibility of slip casting work and has enlarged the slip casting scope, can solve the not enough that exists among the prior art, promotes the whole bearing capacity and the back slip casting effect of screw anchor.
The above-mentioned embodiments are only for describing the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art without departing from the design spirit of the present invention should fall into the protection scope defined by the claims of the present invention.
Claims (8)
1. The utility model provides a back slip casting spiral anchor constructional device which characterized in that: comprises a plurality of sections of steel pipes which are connected in sequence; the steel pipe is sleeved with a plurality of helical blades; an internal grouting steel pipe is embedded in the steel pipe; an external grouting steel pipe is embedded in the periphery of the spiral blade; a first slurry flow channel is arranged in the middle of the inner grouting steel pipe; a slurry flow channel II communicated with the slurry flow channel I is arranged in the middle of the external grouting steel pipe; a first guniting port is formed in the side wall of the steel pipe; and the external grouting steel pipe is provided with a plurality of second guniting ports.
2. A post-grouting spiral anchor construction device as claimed in claim 1, wherein: the outer peripheral wall of the spiral blade is provided with a grouting steel pipe mounting groove; and the external grouting steel pipe is welded in the grouting steel pipe mounting groove.
3. A post-grouting spiral anchor construction device as claimed in claim 1, wherein: the spiral blades are provided with connecting channels, the outer ends of the connecting channels are connected with the external grouting steel pipe, and the inner ends of the connecting channels are connected with the internal grouting steel pipe.
4. A post-grouting spiral anchor construction device as claimed in claim 1, wherein: and the guniting port is positioned on the steel pipe between two adjacent spiral blades.
5. A post-grouting spiral anchor construction device as claimed in claim 1, wherein: the outer diameter of the steel pipe is 10-20 cm, the wall thickness is 1-2 cm, the length of each section of steel pipe is 2-3 m, and adjacent sections of steel pipes are connected through a sleeve or welded.
6. A post-grouting spiral anchor construction device as claimed in claim 1, wherein: the helical blade is welded on the outer side wall of the lower end of the steel pipe.
7. A post-grouting spiral anchor construction device as claimed in claim 1, wherein: the diameters of the inner grouting steel pipe and the outer grouting steel pipe are adapted to the thickness of the helical blade and are 10-15 mm; the internal grouting steel pipe is welded on the inner wall of the steel pipe.
8. A post-grouting spiral anchor construction device as claimed in claim 1, wherein: the first guniting port and the second guniting port are both circular, and the diameters of the first guniting port and the second guniting port are both 5-10 mm; the number of the first guniting openings is 2-3; and the number of the second guniting openings is 3-5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921187117.XU CN210562159U (en) | 2019-07-26 | 2019-07-26 | Post-grouting spiral anchor structure device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921187117.XU CN210562159U (en) | 2019-07-26 | 2019-07-26 | Post-grouting spiral anchor structure device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210562159U true CN210562159U (en) | 2020-05-19 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921187117.XU Active CN210562159U (en) | 2019-07-26 | 2019-07-26 | Post-grouting spiral anchor structure device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210562159U (en) |
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2019
- 2019-07-26 CN CN201921187117.XU patent/CN210562159U/en active Active
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