CN220598429U - Static separator for pile head of filling pile - Google Patents
Static separator for pile head of filling pile Download PDFInfo
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- CN220598429U CN220598429U CN202322048162.XU CN202322048162U CN220598429U CN 220598429 U CN220598429 U CN 220598429U CN 202322048162 U CN202322048162 U CN 202322048162U CN 220598429 U CN220598429 U CN 220598429U
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- 230000003068 static effect Effects 0.000 title claims abstract description 27
- 230000002441 reversible effect Effects 0.000 claims abstract description 44
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- 230000001681 protective effect Effects 0.000 claims description 10
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- 238000010276 construction Methods 0.000 description 13
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- 239000004743 Polypropylene Substances 0.000 description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 2
- 238000005422 blasting Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
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- 125000006850 spacer group Chemical group 0.000 description 1
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- Piles And Underground Anchors (AREA)
Abstract
The utility model discloses a static separation device for pile heads of cast-in-place piles, which comprises an upper protection guide rail (1), a lower protection guide rail (2), a middle wedge block (3), a reverse wedge block (4) and an elevation control line (5); the elevation control line is arranged on the pile body of the filling pile (6) in a ring-shaped way, the elevation control line is positioned at the elevation of the pile top of the filling pile, the lower edge of the upper protection guide rail and the upper edge of the lower protection guide rail are aligned with the elevation control line, the upper protection guide rail is sleeved at the bottom of the pile head, and the lower protection guide rail is sleeved at the pile top of the filling pile; a plurality of split holes (601) are formed in the filling pile, and the split holes extend from the elevation control line into the filling pile; a pair of reverse wedges are arranged in each split hole, and a middle wedge is inserted between the pair of reverse wedges, so that the pair of reverse wedges are tightly propped against the top and the bottom of the inner wall of the split hole. The utility model can solve the problems of long pile head breaking time, large potential safety hazard, need of secondary pile head breaking and small application range in the prior art.
Description
Technical Field
The utility model relates to filling pile construction auxiliary equipment, in particular to a static separating device for a pile head of a filling pile.
Background
The reinforced concrete bored pile (hereinafter referred to as bored pile) is widely applied to the engineering construction of subway vehicle sections in rich water environment due to the characteristics of no vibration, no soil squeezing, low noise and the like. In the pouring process of pile body concrete of the cast-in-place pile, the concrete rolls from bottom to top, coarse aggregate subsides and fine aggregate floats in the rolling process, so that the floating slurry problem is very easy to occur, and particularly, the pile top part is seriously floated; impurities such as silt at the pile bottom and the like are inevitably brought to the pile top in the floating process. In order to ensure the pile head quality, the elevation of the top of the cast-in-place pile is generally 0.8m-1m higher than that of the designed pile top. Before the construction of the bearing platform, the over-filling part, namely the pile head, is broken.
The traditional pile head breaking method is mostly carried out by manually using small machines such as a pneumatic pick and the like, so that dust emission and noise pollution are high, main ribs are often damaged in bending, pile heads are uneven in the breaking process, and the phenomenon that the concrete protective layer of the lower permanent pile body is easily stripped along the belt carelessly when the overstocked concrete is stripped off the protective layer is caused; in addition, the manual breaking method has the defects of high labor intensity, long construction period, difficult slag removal and the like because of severe bending damage of the steel bars and the need of manually straightening the steel bars. Because of the adhesion of concrete, the surface of the steel bar is polluted and even rusted, and the steel bar needs to be cleaned for the second time after being stripped.
The Chinese patent of utility model with publication number of CN115874622A discloses a method for directionally breaking pile head of cast-in-place pile, which adopts a pile head directional breaking mode combining a reinforcing steel bar isolation technology and a static blasting process, namely, a cast-in-place pile reinforcement cage is sleeved with an isolation layer, and a positioning opening is provided with an energy directional releaser: placing an energy directional releaser along the radial opening of the cast-in-place pile, wherein a breaking isolation sleeve is arranged on the inner ring surface of the energy directional releaser, and static blasting expanding agents are respectively filled in the isolation sleeve and the breaking isolation sleeve; and the pile head is lifted off after being separated.
In the pile head breaking method, the isolation sleeve and the static expansion agent in the isolation sleeve need to react for at least 8 hours, so that the pile head breaking time is prolonged, the phenomenon that concrete fragments fly out to hurt people easily occurs in the process of expanding and breaking concrete, and the potential safety hazard is increased.
The Chinese patent publication No. CN218562335U discloses a construction device for static separation pile head, by which a support pipe is used to replace a main reinforcement of a reinforcing steel bar, an annular water pipe is arranged below a stirrup at the stage of elevation pile head, a pipe I which is also positioned on the elevation surface of the pile head and is internally filled with an expansion part is arranged below the stirrup, a pipe II and a pipe III are extended from the water pipe, the pipe III is arranged in the support pipe, the pipe II is communicated with the pipe I, when the pile head pouring is completed and needs to be removed, three-way water flows from the pipe, and the water flows into the pipe I through the water pipe and the pipe, and the expansion part in the pipe I is subjected to chemical reaction, so that upward stress is generated, and the pile head is removed.
On one hand, the construction device is required to be installed in place during pile body concrete pouring, the operation is complicated, the pipeline is easy to block, the elevation of the construction device during installation is not easy to control, and after the construction device is used for breaking, a pile head with a certain height is required to be broken; on the other hand, the construction device cannot be applied to pile head breaking with pile top elevation lower than that of the original ground, and the application range is small.
Therefore, it is necessary to provide a static separator for pile heads of cast-in-place piles, which can solve the problems of long pile head breaking time, large potential safety hazard, secondary pile head breaking requirement and small application range in the prior art.
Disclosure of Invention
The utility model aims to provide a static separation device for pile heads of cast-in-place piles, which can solve the problems of long pile head breaking time, large potential safety hazard, need of secondary pile head breaking and small application range in the prior art.
The utility model is realized in the following way:
a static separation device for pile heads of cast-in-place piles comprises an upper protection guide rail, a lower protection guide rail, a middle wedge block, a reverse wedge block and an elevation control line; the elevation control line is arranged on the pile body of the filling pile in a ring-shaped manner, and is positioned at the elevation of the pile top of the filling pile, namely on the separation surface of the pile head and the pile body; the upper protection guide rail and the lower protection guide rail are of circular ring structures matched with the cast-in-place pile, the lower edge of the upper protection guide rail and the upper edge of the lower protection guide rail are aligned with the elevation control line, so that the upper protection guide rail is sleeved at the bottom of a broken pile head of the cast-in-place pile, and the lower protection guide rail is sleeved at the pile top of the cast-in-place pile; a plurality of split holes are formed in the filling pile at intervals, and extend from the elevation control line to the inside of the filling pile; a pair of reverse wedges are arranged in each split hole, and a middle wedge is inserted between the pair of reverse wedges, so that the pair of reverse wedges respectively prop against the top and the bottom of the inner wall of the split hole.
The split holes are arranged along the radial direction of the filling pile, and the depth of the split holes is smaller than the radius of the filling pile.
The axial directions of the plurality of split holes are all positioned in the same horizontal plane with the elevation control line.
The split holes are arranged at equal intervals, and the split holes are staggered with the main ribs of the cast-in-place pile.
And an isolation protective sleeve is sleeved on the main reinforcement of the filling pile.
The lower end face of the isolation protective sleeve and the elevation control line are positioned in the same horizontal plane, and the upper end of the isolation protective sleeve is closed and flush with the upper end of the main rib.
The top of the upper protection guide rail is provided with a connecting ring, one end of the lifting rope is connected with the upper protection guide rail through the connecting ring, and the other end of the lifting rope is connected with lifting equipment.
The reverse wedge blocks are provided with single wedge faces, the plane ends of the pair of reverse wedge blocks are respectively attached to the top and the bottom of the inner wall of the splitting hole, and the wedge face ends of the pair of reverse wedge blocks are oppositely arranged; the middle wedge block is provided with double wedge faces, and two wedge face ends of the middle wedge block are respectively in sliding fit with the wedge face ends of the pair of reverse wedge blocks.
Compared with the prior art, the utility model has the following beneficial effects:
1. the utility model is provided with the splitting hole, the middle wedge block and the reverse wedge block, wherein the splitting hole is arranged along the separating surface of the pile head and the pile body, and the pair of reverse wedge blocks are inserted and extruded into the splitting hole through the middle wedge block, so that upward and downward extrusion force is applied to the splitting hole through the pair of reverse wedge blocks, and concrete is separated up and down at the splitting hole, thereby achieving the purpose of static pile head breaking.
2. The upper protection guide rail and the lower protection guide rail are arranged along the elevation control line, circumferentially surround the pile body, play a good role in protecting concrete on the upper and lower parts of the separation surface, and well protect the concrete of the lower permanent pile body through the lower protection guide rail, so that the pile head breaking quality is improved, and the subsequent secondary chiseling is avoided; meanwhile, the upper protection guide rail and the pile head can be integrally lifted by using lifting equipment through the lifting rope, so that collision damage to the main reinforcement of the cast-in-place pile is avoided.
3. The utility model has the advantages that the main reinforcement of the cast-in-place pile is isolated from the concrete by the isolating protective sleeve, so that the main reinforcement is effectively protected, the main reinforcement is prevented from bending, shifting and even breaking in the process of breaking and lifting the pile head of the cast-in-place pile, the subsequent main reinforcement straightening operation is avoided, the high-altitude workload is reduced, the construction safety is improved, and the construction progress is guaranteed.
Drawings
FIG. 1 is a schematic installation view of an upper and a lower protection rail in a static separation device for pile heads of cast-in-place piles according to the present utility model;
FIG. 2 is a plan view of the arrangement of split holes in a static separation device for pile heads of cast-in-place piles according to the present utility model;
FIG. 3 is a schematic illustration of the packing of a spacer sleeve in a static separator for a pile head of a cast-in-place pile according to the present utility model;
fig. 4 is a schematic view of the arrangement of the center wedge and the reverse wedge in the split hole in the static separation device for the pile head of the cast-in-place pile according to the present utility model.
In the figure, an upper protection guide rail, a lower protection guide rail, a middle wedge block, a reverse wedge block, a 5-elevation control line, a 6-cast-in-place pile, a 601 split hole, a 602 main rib and a 603 isolation protection sleeve are arranged.
Detailed Description
The utility model will be further described with reference to the drawings and the specific examples.
Referring to fig. 1, 2 and 4, a static separation device for pile heads of cast-in-place piles comprises an upper protection guide rail 1, a lower protection guide rail 2, a middle wedge block 3, a reverse wedge block 4 and an elevation control line 5; the elevation control line 5 is circumferentially arranged on the pile body of the filling pile 6, and the elevation control line 5 is positioned at the elevation of the pile top of the filling pile 6, namely on the separation surface of the pile head and the pile body; the upper protection guide rail 1 and the lower protection guide rail 2 are of annular structures matched with the cast-in-place pile 6, the lower edge of the upper protection guide rail 1 and the upper edge of the lower protection guide rail 2 are aligned with the elevation control line 5, so that the upper protection guide rail 1 is sleeved at the bottom of a broken pile head of the cast-in-place pile 6, and the lower protection guide rail 2 is sleeved at the pile top of the cast-in-place pile 6; a plurality of split holes 601 are formed in the bored concrete pile 6 at intervals, and the split holes 601 extend from the elevation control line 5 to the interior of the bored concrete pile 6; a pair of reverse wedges 4 is provided in each split hole 601, and the intermediate wedge 3 is inserted between the pair of reverse wedges 4 so that the pair of reverse wedges 4 respectively press against the top and bottom of the inner wall of the split hole 601.
The pile top elevation of the filling pile 6 is provided with the splitting hole 601, a pair of reverse wedges 4 are arranged in the splitting hole 601, after the middle wedges 3 are inserted between the pair of reverse wedges 4, the wedge-shaped surface slides to form extrusion, the reverse wedges 4 positioned above upwards extrude the top of the splitting hole 601, and the reverse wedges 4 positioned below downwards extrude the bottom of the splitting hole 601, so that concrete above the splitting hole 601 and concrete below the splitting hole are split and separated, and the middle wedges 3 in the plurality of splitting holes 601 are synchronously inserted, thereby achieving the purpose of static pile head breaking, and being simple and efficient in operation.
The pile top elevation, namely the broken separating surface of the pile head, is marked by an elevation control line 5, so that the opening of the split hole 601 and the installation of the upper protection guide rail 1 and the lower protection guide rail 2 are facilitated. Preferably, the upper protection guide rail 1 and the lower protection guide rail 2 can be made of steel rings, and the upper protection guide rail 1 and the lower protection guide rail 2 are arranged in a circumferential wrapping manner, so that a separation surface of the cast-in-place pile 6 can be protected up and down, an effective protection effect is achieved on a pile top, guiding and limiting of the opening setting of the split holes 601 are facilitated, and all the split holes 601 are guaranteed to be located on the separation surface of the pile body and the pile head.
Referring to fig. 2, the plurality of split holes 601 are all arranged along the radial direction of the cast-in-place pile 6, and the depth of the split holes 601 is slightly smaller than the radius of the cast-in-place pile 6.
The split hole 601 can transmit the pressing force of the pair of reverse wedges 4 from the outer wall of the bored concrete pile 6 inward to the center, thereby facilitating the separation of the pile head from the bored concrete pile 6.
The axial directions of the plurality of split holes 601 and the elevation control line 5 are all located in the same horizontal plane, so that the separation surface formed by the plurality of split holes 601 is located at the elevation of the pile top.
Referring to fig. 2, the plurality of split holes 601 are arranged at equal intervals, and the plurality of split holes 601 are staggered with the main rib 602 of the cast-in-place pile 6.
Preferably, in the cast-in-place pile 6 with the pile diameter of 1000mm, a split hole 601 is arranged every 120 degrees, and the total number of the split holes 601 is 3, so that the whole stress of a separation surface is ensured to be uniform, and the main rib 602 is not damaged. The aperture of the split hole 601 is 32mm, the hole depth is 300mm, and the aperture and the hole depth of the split hole 601 can be adaptively adjusted according to the size of the cast-in-place pile 6.
Referring to fig. 3, an isolation protective sleeve 603 is sleeved on the main rib 602 of the cast-in-place pile 6, and the isolation protective sleeve 603 is sleeved on the main rib 602 before concrete is poured, so as to physically isolate the main rib 602 from the concrete, thereby protecting the main rib 602 when the pile head is broken.
Referring to fig. 3, the lower end surface of the insulation protection sleeve 603 and the elevation control line 5 are located in the same horizontal plane, and the upper end of the insulation protection sleeve 603 is closed and flush with the upper end of the main rib 602.
After the pile head is broken, the isolation protective sleeve 603 is taken down, the straight main rib 602 is exposed, the subsequent straightening of the main rib 602 is not needed, the structural strength of the main rib 602 is protected, and the construction efficiency is improved.
Preferably, the insulation protection sleeve 603 may be a plastic sleeve, and the specification of the insulation protection sleeve 603 may be adaptively selected according to the diameter of the main rib 602.
The top of the upper protection guide rail 1 is provided with a connecting ring (not shown in the figure), one end of a lifting rope (not shown in the figure) is connected with the upper protection guide rail 1 through the connecting ring, and the other end of the lifting rope is connected with lifting equipment.
The pile head separated from the pile body can be directly lifted upwards and conveyed away through the lifting equipment through the lifting rope, so that the main rib 602 is prevented from tilting and bending caused by the collision of the pile head with the main rib 602.
Referring to fig. 4, the reverse wedges 4 are formed with a single wedge surface, the plane ends of a pair of reverse wedges 4 are respectively attached to the top and bottom of the inner wall of the split hole 601, and the wedge surface ends of a pair of reverse wedges 4 are opposite to each other; the middle wedge block 3 is provided with double wedge faces, and two wedge face ends of the middle wedge block 3 are respectively in sliding fit with the wedge face ends of a pair of reverse wedge blocks 4.
The distance between the wedge faces of the pair of reverse wedges 4 gradually decreases from the outer wall of the pile body 6 to the pile core, the thickness of the middle wedge 3 gradually increases from the outer wall of the pile body 6 to the pile core, and along with the insertion of the middle wedge 3, the pair of reverse wedges 4 are pressed upwards and downwards through the wedge faces, so that the pair of reverse wedges 4 release extremely large energy to concrete through the splitting holes 601, the concrete above and below the splitting holes 601 is separated, and the pile head is separated from the pile body, thereby achieving the purpose of static breaking the pile head.
Referring to fig. 1 to 4, in the construction process of a cast-in-place pile 6, the method for breaking the pile head of the cast-in-place pile 6 according to the present utility model comprises:
1. the main rib 602 of the filling pile 6 reinforcement cage superfilling part is sleeved with a PP polypropylene light blue plastic pipe, the top of the plastic pipe is provided with a sleeve sealing head, the bottom of the plastic pipe extends to the pile top elevation, and physical isolation between the main rib 602 in the pile head and pile body concrete is realized.
2. And excavating earth to a measured elevation, and marking an elevation control line 5 on the pile body by using red paint.
3. In order to protect the concrete of the lower permanent pile body, an upper protection guide rail 1 is arranged at the top of an elevation control line 5, the upper protection guide rail 1 is arranged at the bottom of the pile head, a lower protection guide rail 2 is arranged at the bottom of the elevation control line 5, and the lower protection guide rail 2 is arranged at the top of the pile body.
4. 3 split holes 601 with the diameter of 32mm are drilled at equal intervals in the pile body at the height of the elevation control line 5 by using a hydraulic splitting machine, and the depth is 30cm.
5. The wedge block group (comprising a middle wedge block 3 and a pair of reverse wedge blocks 4) of the splitting gun of the hydraulic splitting machine is inserted into the splitting hole 601, the middle wedge block 3 moves into the pile body under the action of hydraulic pressure, and the pair of reverse wedge blocks 4 form extrusion by utilizing a wedge surface, so that the pair of reverse wedge blocks 4 apply pressure to the top and the bottom of the splitting hole 601, and the pile head is split in a preset direction through the splitting hole 601.
6. One end of a steel wire rope, namely a lifting rope, is fixed on a connecting ring of the upper protection guide rail 1 by using a digger or an automobile crane, the other end of the steel wire rope is connected with the digger or the automobile crane, and a pile head is lifted upwards to prevent the pile head from tilting to smash a main rib 602.
The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model, therefore, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present utility model should be included in the scope of the present utility model.
Claims (8)
1. A static separator of pile head of filling pile, characterized by: the device comprises an upper protection guide rail (1), a lower protection guide rail (2), a middle wedge block (3), a reverse wedge block (4) and an elevation control line (5); the elevation control line (5) is circumferentially arranged on the pile body of the filling pile (6), and the elevation control line (5) is positioned at the pile top elevation of the filling pile (6), namely on the separation surface of the pile head and the pile body; the upper protection guide rail (1) and the lower protection guide rail (2) are of circular ring structures matched with the cast-in-place pile (6), the lower edge of the upper protection guide rail (1) and the upper edge of the lower protection guide rail (2) are aligned with the elevation control line (5), so that the upper protection guide rail (1) is sleeved at the bottom of a broken pile head of the cast-in-place pile (6), and the lower protection guide rail (2) is sleeved at the pile top of the cast-in-place pile (6); a plurality of split holes (601) are formed in the filling pile (6) at intervals, and the split holes (601) extend from the elevation control line (5) to the inside of the filling pile (6); a pair of reverse wedges (4) are arranged in each splitting hole (601), and the middle wedges (3) are inserted between the pair of reverse wedges (4) so that the pair of reverse wedges (4) respectively prop against the top and the bottom of the inner wall of the splitting hole (601).
2. A static separation device for pile heads of cast-in-place piles according to claim 1, wherein: the split holes (601) are all arranged along the radial direction of the filling pile (6), and the depth of the split holes (601) is smaller than the radius of the filling pile (6).
3. A static separation device for pile heads of cast-in-place piles according to claim 1 or 2, characterized in that: the axial directions of the plurality of split holes (601) are all positioned in the same horizontal plane with the elevation control line (5).
4. A bored pile head static separator as claimed in claim 3, wherein: the split holes (601) are arranged at equal intervals, and the split holes (601) are staggered with the main ribs (602) of the cast-in-place pile (6).
5. A static separation device for pile heads of cast-in-place piles according to claim 4, wherein: and an isolation protective sleeve (603) is sleeved on the main rib (602) of the filling pile (6).
6. A static separation device for pile heads of cast-in-place piles according to claim 5, wherein: the lower end face of the isolation protective sleeve (603) and the elevation control line (5) are located in the same horizontal plane, and the upper end of the isolation protective sleeve (603) is closed and is flush with the upper end of the main rib (602).
7. A static separation device for pile heads of cast-in-place piles according to claim 1, wherein: the top of last protection guide rail (1) be equipped with the go-between, the one end of lifting rope is connected with last protection guide rail (1) through the go-between, the other end of lifting rope is connected with lifting device.
8. A static separation device for pile heads of cast-in-place piles according to claim 1, wherein: the reverse wedge blocks (4) are provided with single wedge faces, the plane ends of the pair of reverse wedge blocks (4) are respectively attached to the top and the bottom of the inner wall of the splitting hole (601), and the wedge face ends of the pair of reverse wedge blocks (4) are oppositely arranged; the middle wedge block (3) is provided with double wedge faces, and the two wedge face ends of the middle wedge block (3) are respectively in sliding fit with the wedge face ends of the pair of reverse wedge blocks (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322048162.XU CN220598429U (en) | 2023-08-01 | 2023-08-01 | Static separator for pile head of filling pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322048162.XU CN220598429U (en) | 2023-08-01 | 2023-08-01 | Static separator for pile head of filling pile |
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| Publication Number | Publication Date |
|---|---|
| CN220598429U true CN220598429U (en) | 2024-03-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202322048162.XU Active CN220598429U (en) | 2023-08-01 | 2023-08-01 | Static separator for pile head of filling pile |
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| Country | Link |
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| CN (1) | CN220598429U (en) |
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2023
- 2023-08-01 CN CN202322048162.XU patent/CN220598429U/en active Active
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