CN212582660U - Long spiral drill rod for combined curtain cast-in-place pile - Google Patents
Long spiral drill rod for combined curtain cast-in-place pile Download PDFInfo
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- CN212582660U CN212582660U CN202021093177.8U CN202021093177U CN212582660U CN 212582660 U CN212582660 U CN 212582660U CN 202021093177 U CN202021093177 U CN 202021093177U CN 212582660 U CN212582660 U CN 212582660U
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Abstract
The utility model relates to a long auger stem is used to combination curtain bored concrete pile belongs to bored concrete pile construction equipment field, and its technical scheme main points are including the drilling rod main part, and the rigid coupling has helical blade on the outer wall of drilling rod main part, the inside of drilling rod main part is equipped with two first high-pressure injection pipes and two high-pressure injection pipes of second, and first high-pressure injection pipe and the high-pressure injection pipe of second all follow the vertical setting of axis direction of drilling rod main part, and the lower extreme horizontally connect of first high-pressure injection pipe has the first slip casting shower nozzle that stretches out the drilling rod main part and is located the second slip casting shower nozzle of first slip casting shower nozzle top, and the lower extreme horizontally connect of second high-pressure injection pipe has the high pressure nozzle that stretches out the drilling rod main part, and the high pressure shower nozzle is located the. The utility model has the advantages that can enlarge the diameter scope of the cutting soil body of strikeing, guarantee the construction quality of pile body.
Description
Technical Field
The utility model belongs to the technical field of bored concrete pile construction equipment and specifically relates to a long auger stem is used to combination curtain bored concrete pile.
Background
At present, in the construction process of a combined curtain filling pile, after a first high-pressure injection pipe with a nozzle is drilled to a preset position of a soil layer by a long auger stem of the combined curtain filling pile, slurry is made into high-pressure flow by high-pressure equipment, is ejected from the nozzle and rotates and lifts at a certain speed, and simultaneously impacts and cuts a soil body, so that soil particles and the slurry are stirred and mixed, and after the slurry is solidified, the slurry and the soil body can form a consolidation body, so that the seepage flow is reduced, the effect of water and seepage prevention is achieved, and the foundation strength can be enhanced.
The current chinese utility model patent that can refer to application number 201621262989.4 discloses a long auger stem for combination curtain bored concrete pile, including center tube, rigid coupling helical blade on the center tube periphery, set up the ring flange at pole body both ends, still include the first high-pressure injection pipe of high pressure of rigid coupling on the center tube, the axis of the first high-pressure injection pipe of high pressure is parallel with the axis of center tube, and an end intercommunication of the first high-pressure injection pipe of high pressure has the whitewashing mouth, the axis direction of the blowout direction perpendicular to center tube of whitewashing mouth.
The above prior art solutions have the following drawbacks: in the actual construction process, when the hardness of the soil body is larger, the diameter range of the impact cutting soil body is reduced, so that the diameter of the pile body formed after rotary spraying is reduced, the capability of the pile body for resisting lateral soil pressure is reduced, and improvement is needed.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a long auger stem is used to combination curtain bored concrete pile, its advantage can enlarge the diameter scope of strikeing the cutting soil body, guarantees the construction quality of pile body.
The above technical purpose of the present invention can be achieved by the following technical solutions: the utility model provides a long auger stem is used to combination curtain bored concrete pile, includes the drilling rod main part, and the rigid coupling has helical blade on the outer wall of drilling rod main part, the inside of drilling rod main part is equipped with two first high-pressure injection pipes and two second high-pressure injection pipes, and first high-pressure injection pipe and second high-pressure injection pipe all follow the vertical setting of axis direction of drilling rod main part, and the lower extreme horizontally connected of first high-pressure injection pipe has the first slip casting shower nozzle that stretches out the drilling rod main part and is located the second slip casting shower nozzle of first slip casting shower nozzle top, and the lower extreme horizontally connected of second high-pressure injection pipe has the high pressure nozzle that stretches out the drilling rod main part, and high pressure nozzle is located the top of second slip casting.
By adopting the technical scheme, during pouring, concrete is poured into the pile hole through the drill rod main body, high-pressure air or high-pressure water flow is introduced into the second high-pressure injection pipe, in the process of lifting the drill rod main body, the high-pressure air or high-pressure water flow can cut and crush soil with larger strength in advance, the first high-pressure injection pipe is connected with a high-pressure grouting pump, the first grouting spray head and the second grouting spray head can spray concrete grout out simultaneously, compared with a single grouting spray head, the two first grouting spray heads and the two second grouting spray heads designed by the scheme can accelerate the lifting speed of the drill rod main body on the premise of ensuring the grouting amount, so that the grouting speed is consistent with the grouting speed, one-step molding of a slope protection pile and a curtain between piles in foundation pit supporting engineering can be achieved, in addition, during single-pile pressure pouring, mud skins around the pile hole can be crushed by introducing high-pressure gas into the second high-pressure injection pipe, when the pile is formed by pressure pouring concrete, high-pressure sprayed cement paste is formed around the pile body, so that the frictional resistance between the pile body and the surrounding soil body is improved, and the construction quality of the pile body is ensured.
The utility model discloses further set up to: the projection of the high-pressure nozzle in the vertical direction is positioned between the projection of the first grouting nozzle in the vertical direction and the projection of the second grouting nozzle in the vertical direction.
Through adopting above-mentioned technical scheme, when the drilling rod main part round trip to rotate carries out the fixed spray to certain extent, high pressure nozzle can be at first broken to the mud skin of this within range for it is more firm to form the inter-pile curtain in this department after first slip casting shower nozzle and second slip casting shower nozzle spray the completion.
The utility model discloses further set up to: the vertical spacing between the first grouting spray head and the second grouting spray head as well as between the second grouting spray head and the high-pressure spray head is 500 mm.
Through adopting above-mentioned technical scheme, avoid vertical interval to set up too big to after impacting the breakage to the soil body, spout the concrete thick liquid through first slip casting shower nozzle and second slip casting shower nozzle immediately.
The utility model discloses further set up to: and the spiral blade is correspondingly provided with a yielding port for the first grouting spray head, the second grouting spray head and the high-pressure spray head to extend out.
Through adopting above-mentioned technical scheme, the processing mode is comparatively simple, at the in-process of spiral promotion drilling rod main part, the helical blade of stepping down a mouthful both sides can play certain guard action to first slip casting shower nozzle, second slip casting shower nozzle and high pressure nozzle.
The utility model discloses further set up to: and the upper surface and the lower surface of the helical blade are arched outwards and then are constructed to form abdicating holes for the first grouting nozzle, the second grouting nozzle and the high-pressure nozzle to extend out.
By adopting the technical scheme, the whole connectivity of the helical blade is better, and the first grouting nozzle, the second grouting nozzle and the high-pressure nozzle are coated between the upper surface and the lower surface of the helical blade in the soil body crushing process, so that the helical blade is not easy to damage.
The utility model discloses further set up to: the first high-pressure injection pipes and the second high-pressure injection pipes are uniformly distributed on the inner wall of the drill rod main body, and a horizontal connecting line between the two first high-pressure injection pipes is perpendicular to a horizontal connecting line between the two second high-pressure injection pipes.
By adopting the technical scheme, the soil around can be uniformly crushed, and the concrete slurry and the crushed soil are mixed more uniformly.
The utility model discloses further set up to: the first high-pressure injection pipe and the second high-pressure injection pipe are seamless steel pipes.
By adopting the technical scheme, the surface of the seamless steel pipe has no connecting seam, and the leakage phenomenon is not easy to occur.
The utility model discloses further set up to: and the first high-pressure injection pipe and the second high-pressure injection pipe are welded and fixed with the inner wall of the drill rod main body.
Through adopting above-mentioned technical scheme, can be comparatively firm fix first high-pressure injection pipe and second high-pressure injection pipe in the drilling rod main part through the welding mode.
To sum up, the utility model discloses a beneficial technological effect does:
concrete is grouted into the pile hole through the drill rod main body, high-pressure air or high-pressure water flow is introduced into the second high-pressure injection pipe, in the process of lifting the drill rod main body, the high-pressure air or high-pressure water flow can cut and crush soil bodies with larger strength in advance, the first high-pressure injection pipe is connected with a high-pressure grouting pump, the first grouting spray head and the second grouting spray head can simultaneously spray concrete grout, compared with a single grouting spray head, the two first grouting spray heads and the two second grouting spray heads designed by the scheme can accelerate the lifting speed of the drill rod main body on the premise of ensuring the grouting amount, so that the grouting speed is consistent with the grouting speed, the one-step forming of a slope protection pile and an inter-pile curtain in foundation pit supporting engineering can be achieved, in addition, when single-pile grouting is carried out, mud skins around the pile hole can be crushed through introducing high-pressure gas into the second high-pressure injection pipe, when the concrete is pressed and poured into the pile, high-pressure sprayed cement paste is formed around the pile, so that the frictional resistance between the pile body and the surrounding soil body is improved, and the construction quality of the pile body is ensured.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic diagram showing a positional relationship of projections of the heads in the vertical direction.
FIG. 3 is a schematic view showing a structure of a helical blade
Fig. 4 is another structural schematic diagram embodying a helical blade.
In the figure, 1, a drill rod body; 2. a helical blade; 3. a first high pressure injection tube; 31. a first grouting nozzle; 32. a second grouting nozzle; 4. a second high pressure injection tube; 41. a high pressure spray head; 5. a let position port; 6. and (4) a yielding hole.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, for the utility model discloses a long auger stem is used to combination curtain bored concrete pile, including drilling rod main part 1, drilling rod main part 1 is hollow columnar structure, and the winding is fixed with helical blade 2 on its outer wall, can be comparatively smooth with drilling rod main part 1 drilling to the preset position on soil layer through helical blade 2.
Referring to fig. 1, two first high-pressure injection pipes 3 are arranged inside a drill rod main body 1, the two first high-pressure injection pipes 3 are symmetrically distributed along the axis of the drill rod main body 1 and are welded and fixed with the inner wall of the drill rod main body 1 respectively, the lower end of each first high-pressure injection pipe 3 is communicated with a first grouting nozzle 31, the end part of each first grouting nozzle 31 horizontally penetrates out of the drill rod main body 1, during pouring, the drill rod main body 1 is rotated and lifted at a certain speed, concrete slurry becomes high-pressure flow through high-pressure equipment and is injected out of the first grouting nozzles 31, the high-pressure flow cuts broken soil, soil particles and the concrete slurry are stirred and mixed, and after the concrete slurry is solidified, the broken soil can form a solidified body with the soil body, and therefore the foundation strength is enhanced.
Referring to fig. 1, two second high-pressure injection pipes 4 are further arranged inside the drill rod body 1, the two second high-pressure injection pipes 4 are symmetrically distributed along the axis of the drill rod body 1, and are respectively welded and fixed with the inner wall of the drill rod main body 1, the lower end of each second high-pressure injection pipe 4 is communicated with a high-pressure spray head 41, the end part of the high-pressure spray head 41 horizontally penetrates through the drill rod main body 1, the high-pressure spray head 41 is positioned above the first grouting spray head 31, during perfusion, high-pressure air or high-pressure water flow is pumped into the second high-pressure injection pipe 4, the cutting force generated by the high-pressure air or the high-pressure water flow is larger, when the drill rod main body 1 is rotated and lifted, the soil body can be cut and crushed firstly, and compared with the first grouting nozzle 31 which is arranged independently, the additionally arranged high-pressure nozzle 41 can enlarge the diameter range of the impact cutting soil body, so that the construction quality of the pile body is ensured.
Referring to fig. 1, furthermore, each first high-pressure injection pipe 3 is further communicated with a second grouting nozzle 32, the second grouting nozzle 32 is located at the upstream of the first grouting nozzle 31 and below the high-pressure nozzle 41, the vertical distances between the first grouting nozzle 31 and the second grouting nozzle 32, and between the second grouting nozzle 32 and the high-pressure nozzle 41 are both 500mm, and grout is injected simultaneously through the first grouting nozzle 31 and the second grouting nozzle 32, so that the grouting amount injected into a soil body can be ensured, and the construction quality of a pile body is ensured.
Referring to fig. 2, preferably, the first high-pressure injection pipe 3 and the second high-pressure injection pipe 4 are seamless steel pipes without a connecting seam, and the projection of the high-pressure nozzle 41 in the vertical direction is located between the projection of the first grouting nozzle 31 in the vertical direction and the projection of the second grouting nozzle 32 in the vertical direction, so that the curtain between the piles is better formed.
Referring to fig. 3, in order to protect each spray head in the process of rotationally lifting the drill rod body 1, a yielding port 5 is formed inwards at the edge of each spiral blade 2, the end of each spray head penetrates out of the drill rod body 1 and then extends into the yielding port 5, and the spiral blades 2 on two sides of the yielding port 5 can protect the spray heads and reduce the damage to the spray heads.
Referring to fig. 4, as an improvement, the upper and lower surfaces of the helical blade 2 are arched outward and then have the abdicating holes 6 for extending the nozzles, so that the overall connectivity of the helical blade 2 is enhanced, and in the process of soil body breaking, the first grouting nozzle 31, the second grouting nozzle 32 and the high pressure nozzle 41 are covered between the upper and lower surfaces of the helical blade 2, and thus the helical blade is not easily damaged.
Adopt the utility model discloses a construction principle does: concrete is grouted into a pile hole through the drill rod body 1, high-pressure air or high-pressure water flow is introduced into the second high-pressure injection pipe 4, in the process of lifting the drill rod body 1, the high-pressure air or high-pressure water flow can cut and crush soil with larger strength in advance, a high-pressure grouting pump is connected onto the first high-pressure injection pipe 3, the first grouting spray head 31 and the second grouting spray head 32 can spray concrete grout out simultaneously, compared with a single grouting spray head, the two first grouting spray heads 31 and the two second grouting spray heads 32 designed by the scheme can accelerate the lifting speed of the drill rod body 1 on the premise of ensuring the grouting amount, so that the grouting speed is consistent with the grouting speed, one-step molding of a slope protection pile and an inter-pile curtain in foundation pit supporting engineering can be achieved, in addition, when single-pile grouting is carried out, mud skins around the pile hole can be crushed through introducing high-pressure gas into the second high-pressure injection pipe 4, when the concrete is pressed and poured into the pile, high-pressure sprayed cement paste is formed around the pile, so that the frictional resistance between the pile body and the surrounding soil body is improved, and the construction quality of the pile body is ensured.
The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (7)
1. The utility model provides a long auger stem is used to combination curtain bored concrete pile, includes drilling rod main part (1), and the rigid coupling has helical blade (2), its characterized in that on the outer wall of drilling rod main part (1): the inside of drilling rod main part (1) is equipped with two first high-pressure injection pipes (3) and two second high-pressure injection pipes (4), the vertical setting of axis direction of drilling rod main part (1) is all followed in first high-pressure injection pipe (3) and second high-pressure injection pipe (4), the lower extreme horizontally connected of first high-pressure injection pipe (3) has first slip casting shower nozzle (31) and second slip casting shower nozzle (32) that are located first slip casting shower nozzle (31) top that stretch out drilling rod main part (1), the lower extreme horizontally connected of second high-pressure injection pipe (4) has high pressure nozzle (41) that stretch out drilling rod main part (1), and high pressure shower nozzle (41) are located the top of second slip casting shower nozzle (32).
2. The long auger stem for a composite curtain cast-in-place pile according to claim 1, wherein: the projection of the high-pressure nozzle (41) in the vertical direction is positioned between the projection of the first grouting nozzle (31) in the vertical direction and the projection of the second grouting nozzle (32) in the vertical direction.
3. The long auger stem for a composite curtain cast-in-place pile according to claim 1, wherein: the vertical spacing between the first grouting spray head (31) and the second grouting spray head (32), and the vertical spacing between the second grouting spray head (32) and the high-pressure spray head (41) are both 500 mm.
4. The long auger stem for a composite curtain cast-in-place pile according to claim 1, wherein: and a yielding port (5) for the first grouting nozzle (31), the second grouting nozzle (32) and the high-pressure nozzle (41) to extend out is correspondingly formed in the helical blade (2).
5. The long auger stem for a composite curtain cast-in-place pile according to claim 1, wherein: and the upper surface and the lower surface of the helical blade (2) are arched outwards and then are constructed to form a yielding hole (6) for the first grouting nozzle (31), the second grouting nozzle (32) and the high-pressure nozzle (41) to extend out.
6. The long auger stem for a composite curtain cast-in-place pile according to claim 1, wherein: the first high-pressure injection pipe (3) and the second high-pressure injection pipe (4) are both seamless steel pipes.
7. The long auger stem for a composite curtain cast-in-place pile according to claim 6, wherein: the first high-pressure injection pipe (3) and the second high-pressure injection pipe (4) are welded and fixed with the inner wall of the drill rod main body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021093177.8U CN212582660U (en) | 2020-06-13 | 2020-06-13 | Long spiral drill rod for combined curtain cast-in-place pile |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021093177.8U CN212582660U (en) | 2020-06-13 | 2020-06-13 | Long spiral drill rod for combined curtain cast-in-place pile |
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| CN212582660U true CN212582660U (en) | 2021-02-23 |
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| CN202021093177.8U Active CN212582660U (en) | 2020-06-13 | 2020-06-13 | Long spiral drill rod for combined curtain cast-in-place pile |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114808993A (en) * | 2022-05-19 | 2022-07-29 | 江苏龙城建设项目管理有限公司 | Underwater undispersed concrete curing construction method |
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2020
- 2020-06-13 CN CN202021093177.8U patent/CN212582660U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114808993A (en) * | 2022-05-19 | 2022-07-29 | 江苏龙城建设项目管理有限公司 | Underwater undispersed concrete curing construction method |
| CN114808993B (en) * | 2022-05-19 | 2024-02-09 | 江苏龙城建设项目管理有限公司 | Underwater undispersed concrete curing construction method |
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