CN114960636A - Two-stage turning stirring pressure grouting screw pile and pile forming process - Google Patents
Two-stage turning stirring pressure grouting screw pile and pile forming process Download PDFInfo
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- CN114960636A CN114960636A CN202210534374.6A CN202210534374A CN114960636A CN 114960636 A CN114960636 A CN 114960636A CN 202210534374 A CN202210534374 A CN 202210534374A CN 114960636 A CN114960636 A CN 114960636A
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- 238000003756 stirring Methods 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 12
- 230000008569 process Effects 0.000 title claims abstract description 12
- 239000002689 soil Substances 0.000 claims abstract description 65
- 230000007246 mechanism Effects 0.000 claims abstract description 51
- 238000007569 slipcasting Methods 0.000 claims abstract 5
- 238000007789 sealing Methods 0.000 claims description 44
- 238000010276 construction Methods 0.000 claims description 7
- 230000009471 action Effects 0.000 claims description 4
- -1 simultaneously Substances 0.000 claims description 2
- 230000008878 coupling Effects 0.000 claims 2
- 238000010168 coupling process Methods 0.000 claims 2
- 238000005859 coupling reaction Methods 0.000 claims 2
- 230000006978 adaptation Effects 0.000 claims 1
- 239000004568 cement Substances 0.000 abstract description 21
- 230000000694 effects Effects 0.000 abstract description 7
- 230000002457 bidirectional effect Effects 0.000 abstract description 4
- 238000003908 quality control method Methods 0.000 abstract description 4
- 239000002002 slurry Substances 0.000 abstract description 3
- 239000012466 permeate Substances 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 9
- 238000009434 installation Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000005553 drilling Methods 0.000 description 3
- 239000004570 mortar (masonry) Substances 0.000 description 3
- 238000013019 agitation Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/56—Screw piles
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/52—Piles composed of separable parts, e.g. telescopic tubes ; Piles composed of segments
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
- E02D7/22—Placing by screwing down
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- Piles And Underground Anchors (AREA)
Abstract
The invention discloses a two-stage turning stirring pressure grouting screw pile and a pile forming process, wherein the two-stage turning stirring pressure grouting screw pile comprises a first pile rod, a second pile rod arranged at the top of the first pile rod and a driving mechanism arranged at the top of the second pile rod; wherein, the fixed surface of first stake pole is connected with forward helical blade, and first slip casting mouth has all been seted up to the bottom of first stake pole both sides, and the external screw thread has been seted up at the top on first stake pole surface. According to the invention, the forward helical blade on the first pile rod is spun and undercut to form a forward thread gap in the soil, and the reverse helical blade on the second pile rod is spun and undercut to form a reverse thread gap in the soil, so that under mutual matching of the forward helical blade and the reverse helical blade, a bidirectional thread gap can be formed in the soil and the soil body can be fully disturbed, so that cement slurry can more easily permeate into the surrounding soil body, and the cement slurry and the surrounding soil body are fully mixed, and finally the overall strength of the cement soil pile body is improved, thereby the pile forming effect and the bearing performance of the pile foundation are remarkably improved, and meanwhile, the field quality control is facilitated.
Description
Technical Field
The invention relates to the technical field of constructional engineering, in particular to a two-stage turning stirring pressure grouting screw pile and a pile forming process.
Background
The pressure grouting screw pile is a pile foundation formed by drilling and installing a steel pipe screw pile and performing pressure grouting at the same time. The pressure grouting screw pile refers to the traditional steel pipe screw pile screw drilling construction process, realizes the synchronization of the steel pipe screw pile drilling installation and the pressure grouting, and utilizes the screw blades to carry out one-way forced stirring on cement paste and soil, so that the soil around the pile is solidified into cement soil with integrity, water stability and certain strength. Therefore, the pressure grouting screw pile has better bearing performance than a steel pipe screw pile, and also has the characteristics of small construction machinery, small occupied space, high construction efficiency and strong foundation adaptability. The pile foundation has a good application prospect in the engineering fields of soft soil foundation treatment, building bridge foundation reinforcement and reconstruction, communication transmission tower new foundation and the like.
The bearing capacity of the pressure grouting spiral pile is mainly provided by the side frictional resistance of a cement soil pile body and the surrounding soil body, and tests and engineering practices prove that the property of soil, the stirring degree of the spiral blades to the soil and the uniformity of the cement soil after stirring have obvious influence on the bearing capacity of the pile foundation.
The coastal soft soil with large range of marine-phase silt exists in China, and because the strength and the permeability of the soft soil are low, the one-way stirring effect of the helical blade of the pressure grouting helical pile in the pile forming process is not ideal, and the problems mainly include limited stirring influence degree of the helical blade, insufficient stirring, poor uniformity of cement soil after stirring, low shear strength, incomplete cement soil pile body and the like. At present, the problems cause that the pile forming quality of the pressure grouting spiral pile on site is difficult to control, and the popularization and the application of the pile type are limited.
Disclosure of Invention
The technical task of the invention is to provide a two-stage reversal stirring pressure grouting screw pile and a pile forming process aiming at the defects, wherein a forward screw blade on a first pile rod is spun and cut down in soil to form a forward thread gap, and a reverse screw blade on a second pile rod is spun and cut down in soil to form a reverse thread gap, so that under the mutual matching of the forward screw blade and the reverse screw blade, a bidirectional thread gap can be formed in the soil and the soil body can be fully disturbed, so that cement paste can be more easily permeated into the surrounding soil body, and the cement paste and the surrounding soil body can be fully mixed, and finally the overall strength of a cement soil pile body can be improved, thereby the pile forming effect and the bearing performance of a pile foundation can be remarkably improved, and meanwhile, the field quality control is convenient, and the problems are solved.
The technical scheme of the invention is realized as follows:
a two-stage turning stirring pressure grouting screw pile comprises:
the pile driving device comprises a first pile rod, a second pile rod and a driving mechanism, wherein the second pile rod is arranged at the top of the first pile rod;
the surface of the first pile rod is fixedly connected with a forward helical blade, the bottoms of two sides of the first pile rod are both provided with a first grouting opening, and the top of the surface of the first pile rod is provided with an external thread;
the surface of the second pile rod is fixedly connected with a reverse helical blade, the bottoms of two sides of the second pile rod are respectively provided with a second grouting opening, the bottom of the second pile rod is fixedly connected with a threaded sleeve matched with the external thread, the inner wall of the threaded sleeve is provided with an internal thread meshed with the external thread, and the bottom of the second pile rod is installed on the external thread at the top of the first pile rod through the threaded sleeve;
wherein, the inside of the first grouting opening and the second grouting opening is provided with an anti-blocking mechanism, the anti-blocking mechanism comprises a sealing ring fixedly connected on the inner wall of the grouting opening, the side surface of the sealing ring is fixedly connected with a sleeve symmetrically arranged, the inner walls of the two sleeves are fixedly connected with connecting springs, the other ends of the two connecting springs are fixedly connected with sliders matched with the sleeve, the sliders are slidably connected with the inner wall of the sleeve, one sides of the two sliders far away from the connecting springs are fixedly connected with loop bars, one ends of the loop bars far away from the sliders movably penetrate through the sleeve and extend to the outside of the sleeve, one ends of the two loop bars far away from the sliders are fixedly connected through mounting bars, the mounting bars are close to the connecting rods fixedly connected with the center of one side of the loop bars, and one ends of the connecting rods far away from the mounting bars movably penetrate through the sealing ring, the connecting rod is connected with the mounting rod through a connecting rod, and one end of the connecting rod, which is far away from the mounting rod, is fixedly connected with a sealing plate matched with the sealing ring;
wherein, the driving mechanism comprises a driving disc, driving grooves are arranged at the top of the driving disc at equal intervals, two sides of the bottom of the driving disc are fixedly connected with limit blocks, the top of the first pile rod and the second pile rod are respectively provided with limit grooves matched with the limit blocks, the top of the limit blocks is provided with a containing groove, the inner wall of the containing groove is fixedly connected with a reset spring, the other end of the reset spring is fixedly connected with a fixture block, one end of the fixture block, far away from the reset spring, movably penetrates through the limit blocks and extends to the outside of the limit blocks, the inner walls of the limit grooves at the top of the first pile rod and the second pile rod are respectively provided with a clamping groove matched with the fixture block for use, the inner wall of the containing groove is also fixedly connected with a guide wheel, a pull rope is wound on the guide wheel, and one end of the pull rope is fixedly connected with the side surface of the fixture block, the other end of the pull rope movably penetrates through the driving disc and extends to the upper part of the driving disc.
Preferably, a sealing ring matched with the sleeve rod is installed on one side, close to the installation rod, of the sleeve.
Preferably, a sealing gasket matched with the sealing ring is fixedly connected to one side, close to the sealing ring, of the sealing plate.
Preferably, a positioning ring matched with the first pile rod and the second pile rod is fixedly connected to the center of the bottom of the driving disc.
Preferably, the tops of the two pull ropes are fixedly connected through a linkage rod, and the top of the linkage rod is fixedly connected with a pulling handle.
Preferably, the bottom of the limiting block is designed in an arc shape.
Preferably, a limiting groove is further formed in one side, close to the reset spring, of the clamping block, a limiting rod matched with the limiting groove is connected to the inner wall of the limiting groove in a sliding mode, and the end portion of the limiting rod is fixedly connected with the inner wall of the accommodating groove.
Preferably, the side surface of the fixture block is designed in an arc shape.
A pile forming process for a two-stage turning stirring pressure grouting screw pile comprises the following steps:
s1, firstly, installing a driving mechanism above the first pile rod, and driving the driving mechanism through external force, so that the first pile rod can be clockwise screwed into the soil, simultaneously injecting concrete into the first pile rod through a cavity of the first pile rod, and injecting the concrete into the soil through a first grouting opening until the first pile rod is installed to a specified depth, and then completing pressure grouting in the first stage to obtain a first-stage pile body;
s2, removing the driving mechanism from the first pile rod, installing the lower end of the second pile rod on the external thread at the top of the first pile rod through a thread sleeve, installing the driving mechanism on the second pile rod, rotating the second pile rod anticlockwise through the action of external force, simultaneously injecting concrete through the cavity of the second pile rod, and simultaneously injecting the concrete into the soil through the first grouting port and the second grouting port until the second pile rod reaches the depth under the soil layer required by construction, thereby completing pressure grouting at the second stage and obtaining a pile body at the second stage;
and S3, detaching the driving mechanism from the second pile rod, pouring concrete at the top end of the second stage pile body to form a concrete foundation, and obtaining the complete two-stage direction-changing stirring pressure grouting screw pile.
Compared with the prior art, the invention has the advantages and positive effects that:
1. according to the invention, the forward helical blade on the first pile rod is arranged to be spun and cut down to form a forward thread gap in soil, and the reverse helical blade on the second pile rod is spun and cut down to form a reverse thread gap in soil, so that under mutual matching of the forward helical blade and the reverse helical blade, a bidirectional thread gap can be formed in soil and soil mass can be fully disturbed, so that cement slurry can easily permeate into surrounding soil mass and is fully mixed with the surrounding soil mass, and finally the overall strength of a cement soil pile body is improved, thereby the pile forming effect and the bearing performance of a pile foundation are remarkably improved, and meanwhile, the field quality control is facilitated;
2. according to the invention, the driving mechanism is composed of the driving disc, the driving groove, the limiting block, the limiting groove, the accommodating groove, the reset spring, the clamping block, the clamping groove, the guide wheel and the pull rope, so that the driving mechanism is convenient to disassemble and assemble, and is convenient to connect with the first pile rod and the second pile rod, further the first pile rod and the second pile rod are convenient to spin and dig in soil, and the driving mechanism can be repeatedly reused;
3. according to the invention, the arranged anti-blocking mechanism consists of the sealing ring, the sleeve, the connecting spring, the sliding block, the loop bar, the mounting rod, the connecting rod and the sealing plate, mortar is pressed from the grouting port during grouting, so that the sealing plate can be pushed to separate from the sealing ring, and normal grouting is further ensured;
4. the pressure grouting of the invention is implemented in two stages, the first stage is implemented by preliminarily combining cement paste with the surrounding soil body, and the second stage is implemented by increasing grouting pressure and grouting amount, so that the soil body around the pile can be further solidified, therefore, the pile-forming pile body has better uniformity, and the quality of the cement soil pile body is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required in the embodiments will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a flow chart of a pile forming process of a two-stage direction-changing stirring pressure grouting screw pile according to an embodiment of the invention;
FIG. 2 is a schematic diagram of a two-stage reverse-mix pressure-grouting screw pile according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a first shaft of a two-stage steered stirred pressure grouting screw pile according to an embodiment of the invention;
FIG. 4 is a schematic cross-sectional view of a first shaft of a two-stage steered stirred pressure grouting screw pile according to an embodiment of the invention;
FIG. 5 is a schematic diagram of a second shaft of a two-stage steered stirred pressure grouting screw pile according to an embodiment of the invention;
FIG. 6 is a schematic cross-sectional view of a second shaft of a two-stage steered stirred pressure grouting screw pile according to an embodiment of the invention;
FIG. 7 is a schematic diagram of a partial enlarged structure at A in FIG. 3 according to an embodiment of the present invention;
FIG. 8 is a schematic structural diagram of an anti-blocking mechanism in a two-stage direction-changing stirring pressure grouting screw pile according to an embodiment of the invention;
FIG. 9 is a schematic structural diagram of a drive mechanism in a two-stage direction-changing agitation pressure grouting screw pile according to an embodiment of the present invention;
FIG. 10 is a schematic structural diagram illustrating another perspective of a drive mechanism in a two-stage reverse pressure grouting helical pile according to an embodiment of the invention;
FIG. 11 is a schematic cross-sectional view of a drive mechanism in a two-stage direction-changing agitation pressure grouting helical pile according to an embodiment of the present invention;
FIG. 12 is a schematic diagram of a partial enlarged structure at FIG. B in FIG. 11 according to an embodiment of the present invention;
FIG. 13 is a schematic diagram of an installation structure of a first shaft and a driving mechanism in a two-stage direction-changing stirring pressure grouting screw pile according to an embodiment of the invention;
fig. 14 is a schematic view of the installation structure of the second shaft and the driving mechanism in the two-stage direction-changing stirring pressure grouting screw pile according to the embodiment of the invention.
In the figure:
1. a first pile rod; 2. a second pile rod; 3. a drive mechanism; 4. an anti-blocking mechanism;
101. a forward helical blade; 102. a first grouting port; 103. an external thread;
201. a reverse helical blade; 202. a second grouting port; 203. a threaded sleeve;
401. a seal ring; 402. a sleeve; 403. a connecting spring; 404. a slider; 405. a loop bar; 406. mounting a rod; 407. a connecting rod; 408. a sealing plate;
301. a drive disc; 302. a drive slot; 303. a limiting block; 3031. a limiting groove; 304. a containing groove; 305. a return spring; 306. a clamping block; 3061. a card slot; 307. a guide wheel; 308. pulling a rope;
4051. a seal ring; 4081. a gasket;
3011. a positioning ring; 3081. a linkage rod; 3062. a limiting groove; 3063. a limiting rod.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, the present invention will be further described with reference to the accompanying drawings and examples. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
The invention is further described with reference to the following figures and specific examples.
Example 1
As shown in fig. 1 to 14, a two-stage direction-changing stirring pressure grouting screw pile according to an embodiment of the present invention includes a first pile rod 1, a second pile rod 2 installed on top of the first pile rod 1, and a driving mechanism 3 installed on top of the second pile rod 2;
the surface of the first pile rod 1 is fixedly connected with a forward helical blade 101, the bottoms of two sides of the first pile rod 1 are both provided with a first grouting opening 102, and the top of the surface of the first pile rod 1 is provided with an external thread 103;
the surface of the second pile rod 2 is fixedly connected with a reverse helical blade 201, the bottoms of two sides of the second pile rod 2 are respectively provided with a second grouting opening 202, the bottom of the second pile rod 2 is fixedly connected with a threaded sleeve 203 matched with the external thread 103, the inner wall of the threaded sleeve 203 is provided with an internal thread meshed with the external thread 103, and the bottom of the second pile rod 2 is installed on the external thread 103 at the top of the first pile rod 1 through the threaded sleeve 203 in a threaded manner;
wherein, the first grouting opening 102 and the second grouting opening 202 are both provided with an anti-blocking mechanism 4, the anti-blocking mechanism 4 comprises a sealing ring 401 fixedly connected to the inner wall of the grouting opening, the side surfaces of the sealing ring 401 are fixedly connected with symmetrically arranged sleeves 402, the inner walls of the two sleeves 402 are both fixedly connected with connecting springs 403, the other ends of the two connecting springs 403 are both fixedly connected with sliders 404 matched with the sleeves 402, the sliders 404 are slidably connected with the inner walls of the sleeves 402, one sides of the two sliders 404 far away from the connecting springs 403 are both fixedly connected with loop bars 405, one ends of the loop bars 405 far away from the sliders 404 are movably arranged through the sleeves 402 and extend to the outside of the sleeves 402, one ends of the two loop bars 405 far away from the sliders 404 are fixedly connected through mounting bars 406, the center of the mounting bars 406 near one sides of the loop bars 405 is fixedly connected with connecting bars 407, one ends of the connecting bars 407 far away from the mounting bars are movably arranged through the sealing ring 401, the connecting rod 407 extends to the side surface of the sealing ring 401, and one end of the connecting rod 407, which is far away from the mounting rod 406, is fixedly connected with a sealing plate 408 matched with the sealing ring 401;
wherein, the driving mechanism 3 includes a driving disc 301, the top of the driving disc 301 is provided with driving grooves 302 arranged at equal intervals, both sides of the bottom of the driving disc 301 are fixedly connected with limiting blocks 303, the tops of the first pile rod 1 and the second pile rod 2 are provided with limiting grooves 3031 matched with the limiting blocks 303, the top of the limiting blocks 303 is provided with a receiving groove 304, the inner wall of the receiving groove 304 is fixedly connected with a return spring 305, the other end of the return spring 305 is fixedly connected with a clamping block 306, one end of the clamping block 306 far away from the return spring 305 movably penetrates through the limiting blocks 303 and extends to the outside of the limiting blocks 303, the inner walls of the limiting grooves 3031 at the tops of the first pile rod 1 and the second pile rod 2 are provided with clamping grooves 3061 matched with the clamping block 306, the inner wall of the receiving groove 304 is also fixedly connected with a guide wheel 307, a pull rope 308 is wound on the guide wheel 307, one end of the pull rope 308 is fixedly connected with the side surface of the clamping block 306, the other end of the pull rope 308 movably penetrates through the driving disc 301 and extends to the upper part of the driving disc 301;
the invention also discloses a pile forming process of the two-stage turning stirring pressure grouting screw pile, which comprises the following steps of:
s1, firstly, installing the driving mechanism 3 above the first pile rod 1, and driving the driving mechanism 3 through external force, so that the first pile rod 1 can be screwed clockwise into the soil, simultaneously, concrete is injected through the cavity of the first pile rod 1, and the concrete is injected into the soil through the first grouting port 102 until the first pile rod 1 is installed to a specified depth, thereby completing pressure grouting in the first stage and obtaining a first-stage pile body;
s2, detaching the driving mechanism 3 from the first pile rod 1, installing the lower end of the second pile rod 2 on the external thread 103 at the top of the first pile rod 1 through the thread sleeve 203, installing the driving mechanism 3 on the second pile rod 2, rotating the second pile rod 2 anticlockwise through the action of external force, simultaneously injecting concrete through the cavity of the second pile rod 2, and simultaneously injecting the concrete into the soil through the first grouting port 102 and the second grouting port 202 until the second pile rod 2 reaches the depth under the soil layer required by construction, thereby completing pressure grouting at the second stage and obtaining a pile body at the second stage;
and S3, detaching the driving mechanism 3 from the second pile rod 2, pouring concrete at the top end of the second stage pile body to form a concrete foundation, and obtaining the complete two-stage direction-changing stirring pressure grouting screw pile.
By adopting the technical scheme, the forward helical blade 101 on the first pile rod 1 is spun and cut down to form a forward thread gap in the soil, and the reverse helical blade 201 on the second pile rod 2 is spun and cut down to form a reverse thread gap in the soil, so that under mutual matching of the forward helical blade and the reverse helical blade, a bidirectional thread gap can be formed in the soil and a soil body can be fully disturbed, cement paste can be more easily permeated into the surrounding soil body, the cement paste and the surrounding soil body are fully mixed, the overall strength of a cement soil pile body is finally improved, the pile forming effect and the bearing performance of a pile foundation are further remarkably improved, and meanwhile, the field quality control is facilitated;
the driving mechanism 3 is composed of a driving disc 301, a driving groove 302, a limiting block 303, a limiting groove 3031, an accommodating groove 304, a return spring 305, a clamping block 306, a clamping groove 3061, a guide wheel 307 and a pull rope 308, and the driving mechanism 3 is convenient to disassemble and assemble, so that the driving mechanism 3 is convenient to connect with the first pile rod 1 and the second pile rod 2, the first pile rod 1 and the second pile rod 2 are convenient to spin and enter the soil, and the driving mechanism 3 can be reused;
the anti-blocking mechanism 4 comprises a sealing ring 401, a sleeve 402, a connecting spring 403, a sliding block 404, a loop bar 405, an installation bar 406, a connecting rod 407 and a sealing plate 408, mortar is pressed from a grouting opening during grouting so as to push the sealing plate 408 to separate from the sealing ring 401 and further ensure normal grouting, and when the grouting opening is not pressed by the mortar, the sealing plate 408 is driven to block the sealing ring 401 due to the elastic force of the connecting spring 403, so that soil blocks can be effectively prevented from entering the inside of the pile rod through the grouting opening, and an effective anti-blocking effect can be achieved;
the pressure grouting is implemented in two stages, the cement paste is primarily combined with the surrounding soil body in the first stage, the grouting pressure and grouting amount are increased in the second stage, and the soil body around the pile can be further solidified, so that the pile-forming pile body is better in uniformity, and the quality of the cement soil pile body is improved.
Example 2
As shown in fig. 1 to 14, the present embodiment is different from embodiment 1 in that a sealing ring 4051 fitted to the stem 405 is installed on a side of the sleeve 402 near the mounting rod 406.
Through adopting above-mentioned technical scheme, avoid impurity to get into inside the sleeve 402, and then improved the gliding stability of loop bar 405 in sleeve 402.
Example 3
As shown in fig. 1 to 14, the present embodiment is different from embodiment 2 in that a sealing pad 4081 adapted to the sealing ring 401 is fixedly connected to a side of the sealing plate 408 close to the sealing ring 401.
Through adopting above-mentioned technical scheme, the leakproofness when having increased closing plate 408 and blockked up sealing ring 401 to anti-blocking effect has been improved.
Example 4
As shown in fig. 1 to 14, this embodiment is different from embodiment 3 in that a positioning ring 3011 matching with the first stub 1 and the second stub 2 is fixedly connected to the center of the bottom of the driving disk 301.
By adopting the above technical solution, the stability of the driving disc 301 mounted on the first pile rod 1 or the second pile rod 2 is increased.
Example 5
As shown in fig. 1 to 14, the present embodiment is different from embodiment 4 in that the tops of the two pulling ropes 308 are fixedly connected through a linkage 3081, and the top of the linkage 3081 is fixedly connected with a pulling handle.
Through adopting above-mentioned technical scheme, conveniently stimulate stay cord 308 to the convenience that actuating mechanism 3 dismantled.
Example 6
As shown in fig. 1 to 14, the present embodiment is different from embodiment 5 in that the bottom of the stop block 303 and the side surfaces of the latch 306 are both arc-shaped.
By adopting the technical scheme, the convenience of the limiting block 303 in detaching the limiting groove 3031 is improved, and the convenience of the clamping block 306 in clamping the clamping groove 3061 is improved, so that the convenience of mounting the driving mechanism 3 is improved.
For the convenience of understanding the technical solutions of the present invention, the following detailed description will be made on the working principle or the operation mode of the present invention in the practical process.
In practical application, the two pull ropes 308 are pulled by the linkage rod 3081 to drive the fixture block 306 to shrink into the accommodating groove 304, then the two limit blocks 303 below the driving disc 301 are inserted into the limit grooves 3031 at the two sides of the first pile rod 1, the linkage rod 3081 is loosened, the fixture block 306 is driven to be clamped into the clamp groove 3061 under the elastic force of the return spring 305, so that the driving disc 301 is conveniently installed, then the driving disc 301 is spun by external force, so that the first pile rod 1 can be clockwise spun into the soil, simultaneously concrete is injected through the cavity of the first pile rod 1, and the concrete is injected into the soil through the first grouting opening 102 until the first pile rod 1 is installed to a specified depth, so that pressure grouting at a first stage is completed to obtain a pile body at the first stage, then the two pull ropes 308 are pulled by the linkage rod 3081 to drive the fixture block 306 to shrink into the accommodating groove 304, and the driving mechanism 3 is detached from the first pile rod 1, and then, mounting the lower end of a second pile rod 2 on an external thread 103 at the top of a first pile rod 1 through a thread sleeve 203, mounting a driving mechanism 3 on the second pile rod 2, rotating the second pile rod 2 anticlockwise under the action of external force, simultaneously injecting concrete through a cavity of the second pile rod 2, simultaneously injecting the concrete into the concrete through a first grouting opening 102 and a second grouting opening 202 until the second pile rod 2 reaches the depth under a soil layer required by construction, further completing pressure grouting of a second stage to obtain a second-stage pile body, finally detaching the driving mechanism 3 from the second pile rod 2, pouring the concrete at the top end of the second-stage pile body to form a concrete foundation, and obtaining a complete two-stage turning stirring pressure grouting screw pile.
The present invention can be easily implemented by those skilled in the art from the above detailed description. It should be understood, however, that the intention is not to limit the invention to the particular embodiments described. On the basis of the disclosed embodiments, a person skilled in the art can combine different technical features at will, thereby implementing different technical solutions.
Claims (10)
1. The utility model provides a two-stage diversion stirring pressure slip casting screw pile which characterized in that includes:
the pile driving device comprises a first pile rod (1), a second pile rod (2) and a driving mechanism (3), wherein the second pile rod (2) is arranged at the top of the first pile rod (1), and the driving mechanism (3) is arranged at the top of the second pile rod (2);
the surface of the first pile rod (1) is fixedly connected with a forward helical blade (101), the bottoms of two sides of the first pile rod (1) are respectively provided with a first grouting opening (102), and the top of the surface of the first pile rod (1) is provided with an external thread (103).
2. A two-stage direction-changing stirring pressure grouting screw pile according to claim 1, characterized in that;
the surface of the second pile rod (2) is fixedly connected with a reverse helical blade (201), the bottoms of two sides of the second pile rod (2) are respectively provided with a second grouting opening (202), the bottom of the second pile rod (2) is fixedly connected with a threaded sleeve (203) matched with the external thread (103), the inner wall of the threaded sleeve (203) is provided with an internal thread meshed with the external thread (103), and the bottom of the second pile rod (2) is installed on the external thread (103) at the top of the first pile rod (1) through the threaded sleeve (203) in a threaded manner;
wherein, the inside of first slip casting mouth (102) and second slip casting mouth (202) all is provided with prevents stifled mechanism (4), prevent stifled mechanism (4) including sealing ring (401) of fixed connection on the slip casting mouth inner wall, sleeve (402) that the side fixedly connected with symmetry of sealing ring (401) set up, two equal fixedly connected with coupling spring (403) on the inner wall of sleeve (402), two the equal fixedly connected with of the other end of coupling spring (403) with slider (404) of sleeve (402) looks adaptation, just slider (404) with the inner wall sliding connection of sleeve (402).
3. The two-stage direction-changing stirring pressure grouting screw pile according to claim 2,
one side, far away from the connecting spring (403), of each of the two sliders (404) is fixedly connected with a sleeve rod (405), one end, far away from the sliders (404), of each sleeve rod (405) is movably arranged to penetrate through the sleeve (402) and extend to the outside of the sleeve (402), one end, far away from the sliders (404), of each sleeve rod (405) is fixedly connected through a mounting rod (406), a connecting rod (407) is fixedly connected to the center, near the sleeve rod (405), of the mounting rod (406), one end, far away from the mounting rod (406), of each connecting rod (407) is movably arranged to penetrate through the sealing ring (401) and extend to the side face of the sealing ring (401), and one end, far away from the mounting rod (406), of each connecting rod (407) is fixedly connected with a sealing plate (408) matched with the sealing ring (401);
the driving mechanism (3) comprises a driving disc (301), driving grooves (302) which are arranged at equal intervals are formed in the top of the driving disc (301), limiting blocks (303) are fixedly connected to two sides of the bottom of the driving disc (301), limiting grooves (3031) matched with the limiting blocks (303) are formed in the tops of the first pile rod (1) and the second pile rod (2), an accommodating groove (304) is formed in the top of the limiting blocks (303), a return spring (305) is fixedly connected to the inner wall of the accommodating groove (304), a clamping block (306) is fixedly connected to the other end of the return spring (305), one end, far away from the return spring (305), of the clamping block (306) movably penetrates through the limiting blocks (303) and extends to the outside of the limiting blocks (303), and the inner walls of the limiting grooves (3031) at the tops of the first pile rod (1) and the second pile rod (2) are respectively formed in a way that the clamping block (306) is matched with each other to enable the clamping block (306) to be used for enabling the clamping block (306) to be arranged The clamping groove (3061) is used, a guide wheel (307) is further fixedly connected to the inner wall of the accommodating groove (304), a pull rope (308) is wound on the guide wheel (307), one end of the pull rope (308) is fixedly connected with the side face of the clamping block (306), and the other end of the pull rope (308) movably penetrates through the driving disc (301) and extends to the upper side of the driving disc (301); a sealing ring (4051) matched with the sleeve rod (405) is arranged on one side, close to the mounting rod (406), of the sleeve (402); one side of the sealing plate (408) close to the sealing ring (401) is fixedly connected with a sealing gasket (4081) matched with the sealing ring (401).
4. A two-stage direction-changing pressure-grouting screw pile according to claim 3, characterized in that a positioning ring (3011) matching with the first pile rod (1) and the second pile rod (2) is fixedly connected to the center of the bottom of the driving disk (301).
5. The two-stage direction-changing stirring pressure grouting screw pile as claimed in claim 4, wherein the tops of the two pull ropes (308) are fixedly connected through a linkage (3081).
6. The two-stage direction-changing stirring pressure grouting screw pile of claim 5, wherein a pulling handle is fixedly connected to the top of the linkage rod (3081).
7. The two-stage direction-changing stirring pressure grouting screw pile as claimed in claim 6, wherein the bottom of the limiting block (303) is arc-shaped.
8. The two-stage direction-changing stirring pressure grouting screw pile according to claim 7, wherein a limit groove (3062) is further formed in one side, close to the return spring (305), of the fixture block (306), a limit rod (3063) matched with the limit groove (3062) is connected to the inner wall of the limit groove (3062) in a sliding mode, and the end portion of the limit rod (3063) is fixedly connected with the inner wall of the accommodating groove (304).
9. The two-stage direction-changing stirring pressure grouting screw pile as claimed in claim 8, wherein the side surface of the fixture block (306) is arc-shaped.
10. A pile forming process of the two-stage turning stirring pressure grouting screw pile according to any one of claims 1-9, which is characterized by comprising the following steps of:
s1, firstly, installing the driving mechanism (3) above the first pile rod (1), and driving the driving mechanism (3) through external force, so that the first pile rod (1) can be clockwise screwed into the soil, simultaneously, concrete is injected into the first pile rod (1) through the cavity of the first pile rod, and the concrete is injected into the soil through the first grouting port (102) until the first pile rod (1) is installed to a specified depth, thereby completing pressure grouting in a first stage and obtaining a first-stage pile body;
s2, detaching the driving mechanism (3) from the first pile rod (1), installing the lower end of the second pile rod (2) on the external thread (103) at the top of the first pile rod (1) through the thread sleeve (203), installing the driving mechanism (3) on the second pile rod (2), rotating the second pile rod (2) anticlockwise through the action of external force, simultaneously injecting concrete through the cavity of the second pile rod (2), and simultaneously injecting the concrete into the soil through the first grouting port (102) and the second grouting port (202) until the second pile rod (2) reaches the depth below the soil layer required by construction, and further completing pressure grouting at the second stage to obtain a second stage pile body;
and S3, detaching the driving mechanism (3) from the second pile rod (2), pouring concrete at the top end of the second stage pile body to form a concrete foundation, and obtaining the complete two-stage direction-changing stirring pressure grouting screw pile.
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| CN202210534374.6A CN114960636B (en) | 2022-05-17 | 2022-05-17 | Two-stage turning stirring pressure grouting spiral pile and pile forming process |
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| CN202210534374.6A CN114960636B (en) | 2022-05-17 | 2022-05-17 | Two-stage turning stirring pressure grouting spiral pile and pile forming process |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115506341A (en) * | 2022-10-28 | 2022-12-23 | 千易建设集团有限公司 | Cement-soil composite pile and construction equipment |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130272798A1 (en) * | 2011-08-26 | 2013-10-17 | Suver Paul | Apparatus and methods for the placement of pipe piling |
| KR101582857B1 (en) * | 2015-03-18 | 2016-01-07 | 이호경 | the steel pipe pile and the piling method therewith |
| CN106545011A (en) * | 2016-10-28 | 2017-03-29 | 傅志斌 | The multidirectional mixing pile pile making method of efficient energy-saving |
| KR20190010074A (en) * | 2017-07-20 | 2019-01-30 | 신왕수 | micro-pile boring casings pipe for one shot grouting |
| WO2019148812A1 (en) * | 2018-01-30 | 2019-08-08 | 山东倍特力地基工程技术有限公司 | Jetting, expansion and extrusion combined pile, construction method thereof and spiral jetting, expansion and extrusion drilling rig used in method |
| CN110306544A (en) * | 2019-06-24 | 2019-10-08 | 中冶集团武汉勘察研究院有限公司 | A kind of pile-forming equipment and construction method of stiff-core cement soil mixing pile |
| CN110424889A (en) * | 2019-07-24 | 2019-11-08 | 福建省建中工程设备有限公司 | A kind of electricity drive ultra-deep cement-soil mixing pile machine |
| KR102090305B1 (en) * | 2019-10-04 | 2020-03-17 | 이정섭 | Big helical pile with easy grouting construction and construction method using the same |
| CN214783856U (en) * | 2021-01-23 | 2021-11-19 | 北京滕宇翔建设工程有限公司 | Grouting pipe for construction of rotary jet pile composite foundation |
-
2022
- 2022-05-17 CN CN202210534374.6A patent/CN114960636B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130272798A1 (en) * | 2011-08-26 | 2013-10-17 | Suver Paul | Apparatus and methods for the placement of pipe piling |
| KR101582857B1 (en) * | 2015-03-18 | 2016-01-07 | 이호경 | the steel pipe pile and the piling method therewith |
| CN106545011A (en) * | 2016-10-28 | 2017-03-29 | 傅志斌 | The multidirectional mixing pile pile making method of efficient energy-saving |
| KR20190010074A (en) * | 2017-07-20 | 2019-01-30 | 신왕수 | micro-pile boring casings pipe for one shot grouting |
| WO2019148812A1 (en) * | 2018-01-30 | 2019-08-08 | 山东倍特力地基工程技术有限公司 | Jetting, expansion and extrusion combined pile, construction method thereof and spiral jetting, expansion and extrusion drilling rig used in method |
| CN110306544A (en) * | 2019-06-24 | 2019-10-08 | 中冶集团武汉勘察研究院有限公司 | A kind of pile-forming equipment and construction method of stiff-core cement soil mixing pile |
| CN110424889A (en) * | 2019-07-24 | 2019-11-08 | 福建省建中工程设备有限公司 | A kind of electricity drive ultra-deep cement-soil mixing pile machine |
| KR102090305B1 (en) * | 2019-10-04 | 2020-03-17 | 이정섭 | Big helical pile with easy grouting construction and construction method using the same |
| CN214783856U (en) * | 2021-01-23 | 2021-11-19 | 北京滕宇翔建设工程有限公司 | Grouting pipe for construction of rotary jet pile composite foundation |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115506341A (en) * | 2022-10-28 | 2022-12-23 | 千易建设集团有限公司 | Cement-soil composite pile and construction equipment |
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| CN114960636B (en) | 2024-06-18 |
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