CN115341544A - Detachable spiral press-in piece, tubular pile torsion press-in device and construction method - Google Patents
Detachable spiral press-in piece, tubular pile torsion press-in device and construction method Download PDFInfo
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- CN115341544A CN115341544A CN202211059174.6A CN202211059174A CN115341544A CN 115341544 A CN115341544 A CN 115341544A CN 202211059174 A CN202211059174 A CN 202211059174A CN 115341544 A CN115341544 A CN 115341544A
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- 238000010276 construction Methods 0.000 title claims abstract description 15
- 239000002689 soil Substances 0.000 claims abstract description 27
- 241001589086 Bellapiscis medius Species 0.000 claims abstract description 23
- 238000000034 method Methods 0.000 claims abstract description 9
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 5
- 230000000903 blocking effect Effects 0.000 abstract description 3
- 238000004064 recycling Methods 0.000 abstract description 2
- 230000003068 static effect Effects 0.000 description 4
- 238000005056 compaction Methods 0.000 description 3
- 230000002457 bidirectional effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 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
- 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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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/0038—Production methods using an auger, i.e. continuous flight type
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- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
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- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Abstract
The detachable spiral pressing piece comprises a connecting cap, a connecting rod and a spiral pressing head, the connecting cap and the spiral pressing head are connected through the connecting rod, the spiral pressing head is in a two-way top shape from top to bottom, and an upper thread cutter and a lower thread cutter are respectively arranged on the peripheries of the upper portion and the lower portion of the spiral pressing head. The tubular pile torsion pressing-in device comprises the detachable spiral pressing-in piece, a tubular pile and a hoop torsion device, wherein a clamping groove is formed in the inner wall of the top end of the tubular pile, a connecting cap is clamped in the clamping groove, and the hoop torsion device is erected on the periphery of the upper end of the tubular pile. The construction method applies torque to the tubular pile through the hoop twister, and the tubular pile drives the spiral pressing head to press into the soil body, so that the soil squeezing effect is reduced; after the tubular pile reaches the set depth, the upper thread cutter can cut the soil plug, so that the spiral pressing head is twisted and screwed out of the tubular pile, the whole method has low noise, and the spiral pressing head can be detached for recycling, so that the cost is saved; meanwhile, the spiral pressing head is placed at the bottom of the tubular pile, so that the soil plug blocking effect is reduced.
Description
Technical Field
The invention belongs to the field of building components, and particularly relates to a detachable spiral pressing piece, a tubular pile torsion pressing device and a construction method, which are particularly suitable for a prefabricated tubular pile construction scene.
Background
The precast pile has the advantages of high pile body strength, high construction speed, guaranteed quality, low cost and the like, and is widely applied to building foundation design. The existing pressing-in mode of the precast pile mainly comprises a traditional dynamic compaction pile sinking method and a novel static pressure pile sinking method. The dynamic compaction pile sinking has high noise during construction, influences on surrounding buildings and environments, and influences such as pollution and noise generated by the dynamic compaction pile sinking are avoided. The static pressure pile sinking method is to press the prefabricated pile into the soil by means of the static pile press with the counter force provided by the dead weight and the counter weight on the frame. However, the pile pressing machine is huge in equipment, the required balance weight is too large, and the requirement on the bearing capacity of a site foundation is higher during construction; in addition, in the process of sinking the perforated tubular pile, part of soil at the pile end is extruded to the periphery, part of the soil flows into the pipe to form a soil plug, and the soil plug is compressed to a certain extent under the action of friction force of the pipe wall, so that the open end is blocked, the performance of end resistance is influenced, and the static pressure pile sinking process is not an optimal choice. Therefore, there is a need to find a new way to reduce noise during construction without damaging the integrity of the pipe pile and to reduce the soil-squeezing effect and the soil-plug-blocking effect.
Disclosure of Invention
The invention aims to solve the technical problems that aiming at the defects of the existing precast pile sinking, the invention provides a detachable spiral pressing-in piece, a tubular pile torsion pressing-in device and a construction method, wherein a soil body is screwed in by applying torque to a tubular pile to drive a spiral pressing-in head, so that partial foundation soil enters a cavity in the tubular pile, and the soil squeezing effect is reduced; the spiral pressing head can be detached for recycling, the cost is saved, and meanwhile, the existence of the spiral pressing head also reduces the soil plug blocking effect.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the utility model provides a can dismantle spiral piece of impressing, is including connecting cap, connecting rod and spiral head of impressing, connect the cap with the spiral head of impressing passes through the connecting rod is connected, the spiral head of impressing is two-way top form from top to bottom, and the periphery of spiral head upper portion of impressing and lower part sets up screw thread sword and lower screw thread sword respectively.
According to the scheme, the upper part of the connecting rod is in threaded connection with the connecting cap, and the lower part of the connecting rod is fixedly connected with the upper thread cutter of the spiral pressing head.
According to the scheme, the threads of the lower thread cutter are cut downwards, and the threads of the upper thread cutter are cut upwards.
The invention also provides a tubular pile torsion pressing-in device which comprises the detachable spiral pressing-in piece, a tubular pile and a hoop torsion device, wherein a clamping groove is formed in the inner wall of the top end of the tubular pile, a connecting cap of the detachable spiral pressing-in piece is clamped in the clamping groove, and the hoop torsion device is erected on the periphery of the upper end of the tubular pile.
According to the scheme, the clamping groove is provided with 2~4, the upper portion of the connecting rod is provided with a circle of external threads, the connecting cap comprises a central internal thread cap and a plurality of supporting rods symmetrically and fixedly connected with the central internal thread cap, the central internal thread cap is in threaded connection with the external threads of the connecting rod in a matching mode, and each supporting rod is clamped in the clamping groove. According to the scheme, when the tubular pile is pressed into a foundation, the torque direction applied to the tubular pile by the hoop twister is consistent with the thread trend of the lower thread cutter and the built-in thread trend of the connecting cap; when the spiral pressing piece is pulled out of the tubular pile, the torque direction applied to the connecting rod by the hoop twister is consistent with the thread direction of the upper thread cutter.
According to the scheme, the outer diameter of the thread at the maximum thread position of the upper thread cutter and the lower thread cutter is 0.8-0.9 times of the inner diameter of the tubular pile.
According to the scheme, the total length of the connecting rod and the spiral pressing head after connection is larger than the length of the tubular pile.
The invention also provides a construction method of the tubular pile torsion pressing-in device, which comprises the following steps:
1) 2 or more clamping grooves are formed in the top end of the prefabricated pipe pile in a water jet cutting mode;
2) The screw pressing head and the connecting rod are integrally and fixedly connected, the connecting cap is in threaded connection with the external thread at the upper end of the connecting rod through the central internal thread cap of the connecting cap, and finally the connected detachable screw pressing piece is placed into the cavity inside the tubular pile, and the support rod of the connecting cap is clamped in the clamping groove at the top end of the tubular pile;
3) Placing the connected tubular pile and the detachable spiral pressing-in piece above the pile position for fixing, then erecting a hoop twister at the periphery of the upper end of the tubular pile, applying torque and vertical pressure to the hoop twister to drive the tubular pile to twist, driving a spiral pressing-in head to twist through a connecting cap and a connecting rod by the tubular pile, and twisting and screwing a lower thread cutter of the spiral pressing-in head into a foundation so that part of soil body in the foundation enters a cavity inside the tubular pile through a gap between the spiral pressing-in head and the inner wall of the tubular pile;
4) And after the spirally pressed head reaches the set depth, the hoop twister is closed, the connecting cap is twisted to the vertical outlet of the clamping groove, and the connecting rod and the spirally pressed head are pulled out.
According to the scheme, the step 4) is specifically as follows: after the connecting cap is twisted to the vertical outlet of the clamping groove, the connecting cap is vertically pulled out of the tubular pile for a certain distance (by means of related instruments), the upper thread cutter is cut into the soil plug, the hoop twister is sleeved on the connecting rod, torque in the direction of the threads of the upper thread cutter is applied to the connecting rod, and the connecting rod and the spiral pressing head are twisted to pull out the tubular pile.
Compared with the prior art, the invention has the beneficial effects that:
1. applying torque and vertical pressure to the tubular pile through a hoop twister to enable the tubular pile to drive the detachable spiral pressing piece to be pressed into a soil body in a twisting mode; the bidirectional gyroscope-shaped spiral pressing head can be screwed into a foundation downwards conveniently, and can also be used for cutting a soil plug conveniently by the upper thread cutter after the tubular pile reaches a set depth, so that the spiral pressing head is twisted upwards and screwed out of a cavity in the tubular pile; the spiral pressing head can be detached and recycled, so that the cost is saved, and the whole construction cost is greatly reduced;
2. the prefabricated pipe pile has no requirement, the construction is simple, a spiral press-in head is adopted to be matched with the pipe pile to be screwed in a soil body, so that part of foundation soil enters a cavity in the pipe pile, the soil squeezing effect is reduced, and the whole method has low noise and no pollution;
3. the spiral pressing head is placed at the bottom of the tubular pile, so that the soil plug blocking effect is reduced, and the tubular pile structure is further protected from being damaged easily.
Drawings
FIG. 1 is a schematic structural view of a detachable screw driver according to an embodiment of the present invention;
FIG. 2 is a schematic view showing a structure of a coupling cap of a detachable screw driver according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a tubular pile torsion pressing-in device according to an embodiment of the invention;
fig. 4 is a top view of a tube pile torsion pressing-in device according to an embodiment of the invention;
in the figure: the method comprises the following steps of 1-tubular pile, 2-clamping groove, 3-connecting cap, 4-connecting rod, 5-upper thread cutter, 6-spiral pressing head, 7-lower thread cutter and 8-hoop twister.
Detailed Description
The present invention will be described in further detail below with reference to examples and the accompanying drawings.
Referring to fig. 1-2, the detachable screw press-in member according to the embodiment of the present invention includes a connection cap 3, a connection rod 4, and a screw press-in head 6, the connection cap 3 and the screw press-in head 6 are connected by the connection rod 4, the screw press-in head 6 is shaped like a bidirectional gyroscope from top to bottom, and an upper screw blade 5 and a lower screw blade 7 are respectively disposed on the peripheries of the upper portion and the lower portion of the screw press-in head 6. The upper part of the connecting rod 4 is in threaded connection with the connecting cap 3, and the lower part of the connecting rod 4 is fixedly connected with an upper thread cutter 5 of a spiral pressing head 6. The thread directions of the lower thread knife 7 and the upper thread knife 5 are opposite, the thread of the lower thread knife 7 cuts downwards, and the thread of the upper thread knife 5 cuts upwards.
Referring to fig. 3-4, an embodiment of the present invention further provides a tubular pile torsion pressing-in device, including the detachable spiral pressing-in piece, a tubular pile 1 and a hoop torsion device 8, where the inner wall of the top end of the tubular pile 1 is provided with a slot 2, a connection cap 3 of the detachable spiral pressing-in piece is clamped in the slot 2, and the hoop torsion device 8 is erected on the periphery of the upper end of the tubular pile 1.
Torque and vertical pressure are applied to the tubular pile 1 through the hoop twister 8, so that the tubular pile 1 drives the spiral pressing head 6 to twist, and the spiral pressing head 6 drives the tubular pile 1 to be screwed into a foundation soil body in the direction of a thread 7 of a thread cutter below the tubular pile 1.
In the embodiment, the clamping grooves 2 are provided with 4, the upper part of the connecting rod 4 is provided with a circle of external threads, the connecting cap 3 comprises a central internal thread cap and 4 supporting rods which are symmetrically and fixedly connected with the central internal thread cap, the central internal thread cap is in threaded connection with the external threads of the connecting rod 4 in a matching mode, and the 4 supporting rods are clamped in the corresponding 4 clamping grooves 2.
When the tubular pile is pressed into the foundation, the torque direction applied to the tubular pile 1 by the hoop twister 8 is consistent with the thread trend of the lower thread cutter 7 and the thread trend in the connecting cap 3; when the screw pressing piece is pulled out of the tubular pile 1, the hoop twister 8 applies torque to the connecting rod 4 in the same direction as the thread direction of the upper thread cutter 5.
The external diameter of the maximum thread of the upper thread cutter 5 and the lower thread cutter 7 is 0.8-0.9 times of the internal diameter of the tubular pile 1, a gap is formed between the spiral torsion pressing-in head 6 and the inner wall of the tubular pile 1, and when the tubular pile 1 drives the spiral torsion pressing-in head 6 to twist and screw into a foundation, part of soil enters the cavity in the tubular pile 1 from the gap. .
The total length of the connecting rod 4 and the spiral pressing head 6 after connection is larger than the pile length of the tubular pile 1.
The embodiment of the invention also provides a construction method of the tubular pile torsion pressing-in device, which comprises the following steps:
1) 4 clamping grooves 2 are formed in the top end of the prefabricated pipe pile 1 in a water jet cutting mode;
2) The screw pressing head 6 and the connecting rod 4 are prefabricated, molded and integrally fixedly connected, the connecting cap 3 is in threaded connection with the external thread at the upper end of the connecting rod 4 through the central internal thread cap thereof, and finally the connected detachable screw pressing piece body is placed into the cavity inside the tubular pile 1, and the support rod of the connecting cap 3 is clamped in the clamping groove 2 at the top end of the tubular pile 1;
3) Placing the connected tubular pile 1 and a detachable spiral pressing-in piece above a pile position for fixing, then erecting a hoop twister 8 at the periphery of the upper end of the tubular pile 1, applying torque and vertical pressure to the hoop twister 8 to drive the tubular pile 1 to twist, driving a spiral pressing-in head 6 to twist by the tubular pile 1 through a connecting cap 3 and a connecting rod 4, and twisting and screwing a lower thread cutter 7 of the spiral pressing-in head 6 into a foundation so that part of soil body in the foundation enters a cavity inside the tubular pile 1 through the spiral pressing-in head 6 and a gap in the inner wall of the tubular pile 1;
4) After the spiral pressing-in head 6 drives the tubular pile 1 to reach the set depth, the hoop twister 8 is closed, the connecting cap 3 is twisted to a vertical outlet of the clamping groove 2, the connecting cap 3 is vertically lifted out of the tubular pile 1 by using an instrument for a certain distance, the upper thread cutter 5 is cut into the soil plug, the hoop twister 8 is sleeved on the connecting rod 4, torque in the thread direction of the upper thread cutter 5 is applied to the connecting rod 4, and the connecting rod 4 and the spiral pressing-in head 6 are twisted and pulled out of the tubular pile.
The invention is not limited to the applications listed in the description and the embodiments, and it will be apparent to those skilled in the art that various modifications and variations can be made in the invention, such as the number of the struts of the connecting cap and the change of the locking manner of the locking slot, and the like, and the corresponding modifications and variations are all within the protection scope of the present invention.
Claims (10)
1. The utility model provides a can dismantle spiral piece of impressing which characterized in that, is including connecting cap, connecting rod and spiral head of impressing, connect the cap with the spiral head of impressing passes through the connecting rod is connected, the spiral is impressed the head and is two-way top form from top to bottom, and spiral top of impressing portion and the periphery of lower part set up screwer and screwer down respectively.
2. The detachable screw driver according to claim 1, wherein an upper portion of the connecting rod is screw-coupled to the coupling cap, and a lower portion of the connecting rod is fixedly coupled to an upper screw blade of the screw driver.
3. A detachable screw driver according to claim 1, wherein said lower thread blade is threaded downwardly and said upper thread blade is threaded upwardly.
4. A tubular pile twists reverse push in device, its characterized in that includes the spiral of dismantling of any one of above-mentioned claim 1~3 and impresses a piece, still includes tubular pile and hoop twister, tubular pile top inner wall is provided with the draw-in groove, the connecting cap card that can dismantle spiral and impress a piece is established in the draw-in groove, hoop twister erects tubular pile upper end periphery.
5. The tubular pile twists reverse push in device of claim 4, characterized in that, the draw-in groove is provided with 2~4, the upper portion of connecting rod sets up the round external screw thread, connect the cap including central internal thread cap and with a plurality of branches of central internal thread cap symmetry rigid coupling, the external screw thread matching threaded connection of central internal thread cap and connecting rod, each branch card is established in the draw-in groove.
6. The tubular pile torsion pressing-in device according to claim 4, wherein when the tubular pile is pressed into the ground, the torque direction applied to the tubular pile by the hoop torsion device is consistent with the thread trend of the lower thread cutter and the thread trend built in the connecting cap; when the spiral pressing piece is pulled out of the tubular pile, the torque direction applied to the connecting rod by the hoop twister is consistent with the thread direction of the upper thread cutter.
7. The tubular pile torsional pressing device according to claim 4, wherein the outer diameter of the thread at the maximum thread of the upper thread knife and the lower thread knife is 0.8-0.9 times of the inner diameter of the tubular pile.
8. The tubular pile torsional pressing-in device of claim 4, wherein the total length of the connecting rod after being connected with the spiral pressing-in head is larger than the length of the tubular pile.
9. A method for constructing a tubular pile torsion press-in device according to any one of claims 4 to 8, which comprises the following steps:
1) 2 or more clamping grooves are formed in the top end of the prefabricated pipe pile in a water jet cutting mode;
2) The screw pressing head and the connecting rod are integrally and fixedly connected, the connecting cap is in threaded connection with the external thread at the upper end of the connecting rod through the central internal thread cap of the connecting cap, and finally the connected detachable screw pressing piece is placed into the cavity inside the tubular pile, and the support rod of the connecting cap is clamped in the clamping groove at the top end of the tubular pile;
3) Placing the connected pipe pile and the detachable spiral pressing piece above the pile position for fixing, then erecting a hoop twister at the periphery of the upper end of the pipe pile, applying torque and vertical pressure by the hoop twister to drive the pipe pile to twist, driving a spiral pressing head to twist by the pipe pile through a connecting cap and a connecting rod, and twisting and screwing a lower thread cutter of the spiral pressing head into a foundation so that a part of soil body in the foundation enters a cavity inside the pipe pile through a gap between the spiral pressing head and the inner wall of the pipe pile;
4) And when the spirally pressed head has a pipe pile moving to a set depth, the hoop twister is closed, the connecting cap is twisted to the vertical outlet of the clamping groove, and the connecting rod and the spirally pressed head are pulled out.
10. The construction method of the tubular pile torsion pressing-in device according to claim 9, wherein the step 4) is specifically: after the connecting cap is twisted to the vertical outlet of the clamping groove, the connecting cap is vertically pulled out of the tubular pile for a certain distance, the upper thread cutter is cut into the soil plug, the hoop twister is sleeved on the connecting rod, torque in the direction of the thread of the upper thread cutter is applied to the connecting rod, and the connecting rod and the spiral pressing head are twisted to pull out the tubular pile.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211059174.6A CN115341544A (en) | 2022-08-31 | 2022-08-31 | Detachable spiral press-in piece, tubular pile torsion press-in device and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211059174.6A CN115341544A (en) | 2022-08-31 | 2022-08-31 | Detachable spiral press-in piece, tubular pile torsion press-in device and construction method |
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| Publication Number | Publication Date |
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| CN115341544A true CN115341544A (en) | 2022-11-15 |
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|---|---|---|---|
| CN202211059174.6A Pending CN115341544A (en) | 2022-08-31 | 2022-08-31 | Detachable spiral press-in piece, tubular pile torsion press-in device and construction method |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012140787A (en) * | 2010-12-28 | 2012-07-26 | Nomura Shoten Co Ltd | Construction method of pile body and casing pipe used for the same, and foundation structure constructed thereby |
| CN105672875A (en) * | 2016-03-11 | 2016-06-15 | 刘淼 | Improved structure of two-way spiral extrusion and expansion drilling tool and construction method of rough-surface extrusion and expansion pile |
| CN106351585A (en) * | 2016-10-27 | 2017-01-25 | 东南大学 | Hole collapse and shrinkage prevention bidirectional spiral extrusion and expansion drilling tool and construction technology thereof |
| CN107201745A (en) * | 2016-03-18 | 2017-09-26 | 姚明西 | Spiral takes, soil compaction hooks spiral shell perfusion pile work method |
| CN208917830U (en) * | 2018-09-14 | 2019-05-31 | 安徽省路港工程有限责任公司 | For being implanted into the static pressure pipe pile anchor ear of pile driving construction |
| CN111472688A (en) * | 2020-04-17 | 2020-07-31 | 青岛理工大学 | Self-drilling type pipe column supporting device and method thereof |
-
2022
- 2022-08-31 CN CN202211059174.6A patent/CN115341544A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012140787A (en) * | 2010-12-28 | 2012-07-26 | Nomura Shoten Co Ltd | Construction method of pile body and casing pipe used for the same, and foundation structure constructed thereby |
| CN105672875A (en) * | 2016-03-11 | 2016-06-15 | 刘淼 | Improved structure of two-way spiral extrusion and expansion drilling tool and construction method of rough-surface extrusion and expansion pile |
| CN107201745A (en) * | 2016-03-18 | 2017-09-26 | 姚明西 | Spiral takes, soil compaction hooks spiral shell perfusion pile work method |
| CN106351585A (en) * | 2016-10-27 | 2017-01-25 | 东南大学 | Hole collapse and shrinkage prevention bidirectional spiral extrusion and expansion drilling tool and construction technology thereof |
| CN208917830U (en) * | 2018-09-14 | 2019-05-31 | 安徽省路港工程有限责任公司 | For being implanted into the static pressure pipe pile anchor ear of pile driving construction |
| CN111472688A (en) * | 2020-04-17 | 2020-07-31 | 青岛理工大学 | Self-drilling type pipe column supporting device and method thereof |
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