CN220150285U - Scattered pre-pressing anti-pulling filling pile - Google Patents
Scattered pre-pressing anti-pulling filling pile Download PDFInfo
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- CN220150285U CN220150285U CN202321567042.4U CN202321567042U CN220150285U CN 220150285 U CN220150285 U CN 220150285U CN 202321567042 U CN202321567042 U CN 202321567042U CN 220150285 U CN220150285 U CN 220150285U
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- pile body
- bored concrete
- concrete pile
- pulling
- supporting
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- 238000003825 pressing Methods 0.000 title description 2
- 239000004567 concrete Substances 0.000 claims abstract description 81
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 36
- 239000010959 steel Substances 0.000 claims abstract description 36
- 239000006185 dispersion Substances 0.000 claims abstract description 9
- 230000002787 reinforcement Effects 0.000 claims description 28
- 238000004891 communication Methods 0.000 claims description 4
- 238000005056 compaction Methods 0.000 claims description 2
- 230000006835 compression Effects 0.000 abstract description 8
- 238000007906 compression Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 5
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000003014 reinforcing effect Effects 0.000 description 4
- 230000001174 ascending effect Effects 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008602 contraction Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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- Piles And Underground Anchors (AREA)
Abstract
The utility model discloses a dispersion pre-compression pulling-resistant bored concrete pile, which comprises a bored concrete pile body, supporting steel bars and threaded pre-stress steel bars, wherein a plurality of supporting steel bars are arranged in the bored concrete pile body along the circumferential direction, the arrangement direction of the supporting steel bars is parallel to the length direction of the bored concrete pile body, the threaded pre-stress steel bars are arranged on the upper half section of the bored concrete pile body, and the top ends of the threaded pre-stress steel bars extend out of the bored concrete pile body and are in threaded connection with an anchor. The utility model has the effect of improving the pull-out resistance of the cast-in-place pile.
Description
Technical Field
The utility model relates to the technical field of building technology, in particular to a dispersion pre-compression anti-pulling cast-in-place pile.
Background
The anti-pulling pile is a pile body bearing vertical anti-pulling force, and the main action mechanism of the anti-pulling pile is to resist axial pulling force by virtue of friction force between the pile body and a soil layer. The uplift pile is widely applied to anchor foundations of large-scale basement anti-floating, offshore wharf platform anti-pulling, suspension bridges and cable-stayed bridges. The reinforced concrete structure can generate cracks when being pulled, and the cast-in-place pile is required to be provided with more reinforcing steel bars in order to meet the safety requirement of the width of the cracks. The vertical uplift pile mainly bears vertical upward uplift load.
In view of the above related art, the inventor considers that the pulling resistance force applied to the pulling-resistant pile is unevenly distributed on the whole pile body during the use process of the pulling-resistant pile, and generally, the pulling resistance force of the upper pile body is larger, and the pulling resistance force of the lower pile body is smaller. If a plurality of common steel bars are used for strengthening and improving the pulling resistance of the pile, the use requirement of the pile is difficult to meet, cracks are easy to generate during use, and the stability and the safety of the cast-in-place pile are influenced.
Disclosure of Invention
In order to improve the pulling resistance of the cast-in-place pile, the utility model provides a dispersion pre-compression pulling-resistant cast-in-place pile.
The utility model provides a dispersion pre-compression anti-pulling cast-in-place pile, which adopts the following technical scheme:
the utility model provides a dispersion pre-compaction pressure anti-pulling bored concrete pile, includes bored concrete pile body, supporting reinforcement and screw thread prestressing force reinforcing bar, the supporting reinforcement is in the inside of bored concrete pile body is provided with a plurality of along the circumference, the setting direction of supporting reinforcement with the length direction parallel arrangement of bored concrete pile body, screw thread prestressing force reinforcing bar set up in the upper half section of bored concrete pile body, the top of screw thread prestressing force reinforcing bar stretches out bored concrete pile body and threaded connection have the ground tackle.
By adopting the technical scheme, a certain tensile force is applied to the threaded prestressed reinforcement before pouring the cast-in-place pile, and a plurality of supporting reinforcements are placed in the mold along the circumferential direction. Pouring concrete into the mould, loosening the threaded prestressed reinforcement after the concrete reaches a certain structural strength, wherein the threaded prestressed reinforcement generates retraction force, the whole bored concrete pile body generates retraction trend, the supporting reinforcement supports the bored concrete pile body, and the anchor device fixes the end part of the threaded prestressed reinforcement. When the bored concrete pile body receives the ascending pulling force of vertical direction when normal use, pulling force offsets with the retractive force of bored concrete pile body, has reduced the possibility that produces the crack because of the pulling force on the bored concrete pile body. The screw thread prestressing steel bar sets up in the upper half pile body of bored concrete pile body, has satisfied the higher resistance to plucking force demand of upper half pile body. Through the mutual cooperation of bored concrete pile body, supporting reinforcement, screw thread prestressing steel and ground tackle, realized providing different uplift resistance and supportability to the bored concrete pile body, have the effect that promotes the resistance to plucking of bored concrete pile.
Optionally, a pressure disc is connected to the threaded prestressed reinforcement, and the pressure disc is located inside the bored concrete pile body.
Through adopting above-mentioned technical scheme, the center of pressure dish is connected with the screw thread prestressing steel, and the both sides of pressure dish and the internal connection of bored concrete pile body have made things convenient for the shrink force on the screw thread prestressing steel to pass through the pressure dish and transmit to the bored concrete pile body on, have promoted the resistance to plucking of pile body.
Optionally, the pressure disc is provided with a plurality of along length direction equidistant on the screw thread prestressing steel.
Through adopting above-mentioned technical scheme, a plurality of pressure disks are connected with the bored concrete pile body simultaneously, when having improved the anti-pulling pile and received the drawing force, the pressure disk has improved the anti-pulling force of bored concrete pile to the effort of bored concrete pile body.
Optionally, the pressure disc is provided with a plurality of communication holes.
Through adopting above-mentioned technical scheme, at the in-process of pouring into the shaping to the bored concrete pile, the uncondensed concrete passes through the both sides of pressure dish and closely combines with the pressure dish through the intercommunicating pore, has improved the stability that pressure dish and bored concrete pile body are connected.
Optionally, a backing plate is sleeved on the threaded prestressed reinforcement, and the backing plate is clamped between the top end of the bored pile body and the anchor.
Through adopting above-mentioned technical scheme, the backing plate clamp is located between the top of ground tackle and bored concrete pile body, and the pressure that the ground tackle produced the bored concrete pile body has been reduced in the setting up of gasket, has reduced the possibility that the top of bored concrete pile body is impaired under the ground tackle extrusion.
Optionally, be provided with the anti-pulling ring on the outer rampart of bored concrete pile body, be provided with the butt inclined plane along circumference on the bottom surface of anti-pulling ring, the diameter of anti-pulling ring enlarges along the direction from bottom to top.
By adopting the technical scheme, the anti-pulling ring is contacted with the foundation and attached to the foundation, so that the connection strength of the cast-in-place pile body and the ground is improved, and the anti-pulling property of the cast-in-place pile is improved. In the downward piling process, the soil body is extruded upwards along the abutting inclined plane, so that the piling of the filling pile is facilitated.
Optionally, the inside of anti-pulling ring is provided with the support ring board, the support ring board with a plurality of the supporting steel bar is connected simultaneously.
Through adopting above-mentioned technical scheme, the support ring board supports it in the inside of anti-pulling ring, has improved the stability and the structural strength of anti-pulling ring. The support ring plate is connected with the support steel bars simultaneously, so that the structural strength of the support ring plate on the bored concrete pile body is improved.
In summary, the present utility model includes at least one of the following beneficial technical effects:
1. the cast-in-place pile body, the supporting steel bars, the threaded prestressed steel bars and the anchor are mutually matched, so that different pulling resistance and supportability of the cast-in-place pile body are provided, and the effect of improving the pulling resistance of the cast-in-place pile is achieved;
2. the pressure disc transmits the contraction force on the thread prestress steel bar to the interior of the bored concrete pile body, thereby being beneficial to improving the pull-out resistance of the pile body;
3. the anti-pulling ring is contacted and attached with the foundation, so that the connection strength of the cast-in-place pile body and the ground is improved, and the anti-pulling property of the cast-in-place pile is improved.
Drawings
Fig. 1 is a schematic structural view of a dispersion pre-compression pull-out resistant bored concrete pile according to an embodiment of the present utility model.
Fig. 2 is a partial sectional view showing the internal structure of the bored concrete pile body according to the embodiment of the present utility model.
Fig. 3 is an enlarged view of a portion a in fig. 2.
Reference numerals illustrate: 1. a cast-in-place pile body; 2. supporting the steel bar; 3. a threaded prestressed reinforcement; 4. an anchor; 5. a backing plate; 6. a pressure plate; 7. a communication hole; 8. an anti-pulling ring; 9. abutting the inclined plane; 10. a support ring plate; 11. and (5) mounting holes.
Detailed Description
The utility model is described in further detail below with reference to fig. 1-3. The embodiment of the utility model provides a dispersion pre-compression anti-pulling cast-in-place pile, which has the effect of improving the anti-pulling performance of the cast-in-place pile.
Referring to fig. 1, a scattered pre-compression pulling-resistant cast-in-place pile comprises a cast-in-place pile body 1, supporting reinforcing steel bars 2 and threaded pre-stressing reinforcing steel bars 3. The supporting steel bars 2 are arranged along the length direction of the bored concrete pile body 1, the supporting steel bars 2 are arranged inside the bored concrete pile body 1 along the circumference of the bored concrete pile body 1, and the supporting steel bars 2 penetrate through the two ends of the bored concrete pile body 1 in the length direction.
Referring to fig. 1 and 2, a screw-type prestressed reinforcement 3 is provided at a central axis position of a bored concrete pile body 1 along a length direction of the bored concrete pile body 1. The screw thread prestressing steel 3 sets up in the upper half pile body of bored concrete pile body 1, and the top of screw thread prestressing steel 3 stretches out the top of bored concrete pile body 1 and threaded connection has the ground tackle 4 that is used for fixed. The threaded prestressed reinforcement 3 is sleeved with a base plate 5, the bottom surface of the base plate 5 is abutted with the top end of the bored concrete pile body 1, and the base plate 5 is clamped between the anchor 4 and the top surface of the bored concrete pile body 1.
Referring to fig. 2 and 3, a plurality of pressure plates 6 are fixedly connected to the screw-thread prestressed reinforcement 3 at equal intervals along the length direction, the plurality of pressure plates 6 are arranged in parallel with each other, and the plane of the pressure plate 6 is perpendicular to the screw-thread prestressed reinforcement 3. The pressure disk 6 is provided with a plurality of communication holes 7.
Referring to fig. 1 and 2, an anti-pulling ring 8 is provided on the outer circumferential wall of the bored concrete pile body 1, and the outer diameter of the anti-pulling ring 8 is larger than the diameter of the bored concrete pile body 1. An abutting inclined surface 9 is arranged on the bottom surface of the anti-pulling ring 8 along the circumferential direction, and the cross section of the anti-pulling ring 8 is gradually enlarged along the direction from bottom to top. The inside of the anti-pulling ring 8 is provided with a supporting ring plate 10 for supporting, a plurality of mounting holes 11 are formed in the supporting ring plate 10, the mounting holes 11 are in one-to-one correspondence with the supporting reinforcing steel bars 2, and the supporting reinforcing steel bars 2 penetrate through the supporting ring plate 10 through the mounting holes 11 and are connected with the supporting ring plate 10.
Referring to fig. 1 and 2, when the bored concrete pile body 1 is manufactured, the supporting reinforcing bars 2 are placed in the pile body mold along the circumferential direction of the bored concrete pile body 1. The screw thread prestress steel bar 3 is placed at the central shaft position of the bored concrete pile body 1, a certain tensile force is applied to the screw thread prestress steel bar, the pressure plates 6 are sleeved on the screw thread prestress steel bar 3 one by one at equal intervals, and the pressure plates 6 and the screw thread prestress steel bar 3 are welded together. The supporting ring plate 10 is sleeved on the supporting steel bars 2 through the mounting holes 11, and the supporting ring plate 10 and the supporting steel bars 2 are welded together. Pouring the mould, pouring and forming the bored concrete pile body 1, and removing the pulling force on the threaded prestressed reinforcement 3 after the concrete in the mould is coagulated to a certain strength, so that the threaded prestressed reinforcement 3 is retracted. The backing plate 5 is sleeved on the top end of the threaded prestressed reinforcement 3, and the anchor 4 is connected to the top end of the threaded prestressed reinforcement 3. The setting of backing plate 5 has reduced the pressure of ground tackle 4 to filling pile body 1 top, has reduced the possibility that filling pile body 1 tip takes place to damage.
Referring to fig. 2 and 3, since the threaded prestressed reinforcement 3 has a certain retraction force, the plurality of pressure plates 6 simultaneously transmit the retraction force to the bored concrete pile body 1, so that the bored concrete pile body 1 tends to retract. When the bored concrete pile body 1 receives the vertically ascending pulling force, pulling force offsets with the retractive force of bored concrete pile body 1, has reduced the possibility that bored concrete pile body 1 produced the crack. Because the screw thread prestressing steel 3 sets up in the first half section of bored concrete pile body 1, satisfied the great tensile demand of the first half section pile body of bored concrete pile body 1, also help reducing the manufacturing cost of bored concrete pile body 1 simultaneously. The communicating holes 7 on the pressure plate 6 facilitate the concrete to pass through the pressure plate 6 quickly and be tightly attached to the two sides of the pressure plate during pouring.
Referring to fig. 1 and 2, the anti-pulling ring 8 enters the foundation along with the cast-in-place pile body 1, and the soil body moves upwards along the abutting inclined plane 9 on the anti-pulling ring 8, so that the piling process is facilitated. The anti-pulling ring 8 is connected with the foundation, so that the anti-pulling performance of the cast-in-place pile body 1 is further improved. The support ring plate 10 supports the anti-pulling ring 8, so that the structural strength of the anti-pulling ring 8 is improved.
The implementation principle of the dispersion pre-compression pulling-resistant cast-in-place pile in the embodiment of the utility model is as follows: the screw thread prestressing steel 3 has certain retractive force, and a plurality of pressure discs 6 transmit retractive force to the bored concrete pile body 1 simultaneously for the bored concrete pile body 1 produces the trend of retractive. When the bored concrete pile body 1 receives the vertically ascending pulling force, pulling force offsets with the retractive force of bored concrete pile body 1, has reduced the possibility that bored concrete pile body 1 produced the crack. Because the screw thread prestressing steel 3 sets up in the first half section of bored concrete pile body 1, satisfied the great tensile demand of the first half section pile body of bored concrete pile body 1. The anti-pulling ring 8 is connected with the foundation, so that the anti-pulling performance of the cast-in-place pile body 1 is further improved. The support ring plate 10 supports the anti-pulling ring 8, so that the structural strength of the anti-pulling ring 8 is improved.
The above embodiments are not intended to limit the scope of the present utility model, so: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.
Claims (7)
1. A dispersion pre-compaction resistance to plucking bored concrete pile, its characterized in that: including bored concrete pile body (1), supporting reinforcement (2) and screw thread prestressing steel (3), supporting reinforcement (2) are in the inside of bored concrete pile body (1) is provided with a plurality of along circumference, the setting direction of supporting reinforcement (2) with the length direction parallel arrangement of bored concrete pile body (1), screw thread prestressing steel (3) set up in the last half section of bored concrete pile body (1), the top of screw thread prestressing steel (3) stretches out bored concrete pile body (1) and threaded connection have ground tackle (4).
2. A discrete pre-stressed uplift pile as claimed in claim 1, characterised in that: the screw-thread prestressed reinforcement (3) is connected with a pressure disc (6), and the pressure disc (6) is positioned in the bored concrete pile body (1).
3. A discrete pre-stressed uplift pile as claimed in claim 2, characterised in that: the pressure plates (6) are arranged on the threaded prestressed reinforcement (3) at equal intervals along the length direction.
4. A discrete pre-stressed uplift pile as claimed in claim 2, characterised in that: the pressure disc (6) is provided with a plurality of communication holes (7).
5. A discrete pre-stressed uplift pile as claimed in claim 1, characterised in that: the base plate (5) is sleeved on the threaded prestressed reinforcement (3), and the base plate (5) is clamped between the top end of the bored concrete pile body (1) and the anchor (4).
6. A discrete pre-stressed uplift pile as claimed in claim 1, characterised in that: the anti-pulling pile is characterized in that an anti-pulling ring (8) is arranged on the outer annular wall of the pile body (1), an abutting inclined surface (9) is circumferentially arranged on the bottom surface of the anti-pulling ring (8), and the diameter of the anti-pulling ring (8) is enlarged along the direction from bottom to top.
7. A discrete pre-stressed uplift pile as claimed in claim 6, wherein: the anti-pulling ring (8) is internally provided with a supporting ring plate (10), and the supporting ring plate (10) is simultaneously connected with a plurality of supporting steel bars (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321567042.4U CN220150285U (en) | 2023-06-19 | 2023-06-19 | Scattered pre-pressing anti-pulling filling pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321567042.4U CN220150285U (en) | 2023-06-19 | 2023-06-19 | Scattered pre-pressing anti-pulling filling pile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220150285U true CN220150285U (en) | 2023-12-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321567042.4U Active CN220150285U (en) | 2023-06-19 | 2023-06-19 | Scattered pre-pressing anti-pulling filling pile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220150285U (en) |
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2023
- 2023-06-19 CN CN202321567042.4U patent/CN220150285U/en active Active
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