CN211143053U - Pretensioned prestressed concrete pipe pile - Google Patents
Pretensioned prestressed concrete pipe pile Download PDFInfo
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- CN211143053U CN211143053U CN201921406617.8U CN201921406617U CN211143053U CN 211143053 U CN211143053 U CN 211143053U CN 201921406617 U CN201921406617 U CN 201921406617U CN 211143053 U CN211143053 U CN 211143053U
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Abstract
The utility model provides a pretensioning method prestressed concrete tubular pile, including pile body and plush stake point, be equipped with the steel reinforcement cage in the pile body, the steel reinforcement cage includes a plurality of main muscle that extend along pile body length direction, is equipped with a plurality of stretch-draw holes on the plush stake point, each stretch-draw downthehole main muscle that all stretches into, plush stake point is equipped with a plurality of anchor muscle that stretch into in the pile body and together cast with the steel reinforcement cage towards one side of pile body. The utility model provides a pretensioning method prestressed concrete tubular pile, pile point and pile body adopt stretch-draw, integration together to make for pile point and pile body structure as an organic whole, the seam crossing concrete is close and solid, can effectively prevent that groundwater from getting into the lumen, avoids the corruption of groundwater to tubular pile end plate and steel pile point. The utility model provides a pretensioning method prestressed concrete tubular pile, stake point and pile body adopt the integration to make, have cancelled the stake point welding of job site completely, have reduced welding work volume, the construction management of being convenient for simultaneously.
Description
Technical Field
The utility model relates to a construction field especially relates to a pretensioning method prestressed concrete tubular pile.
Background
The prestressed concrete tubular pile can be divided into a post-tensioning prestressed tubular pile and a pre-tensioning prestressed tubular pile. The pre-tensioning prestressed pipe pile is a hollow cylindrical elongated concrete prefabricated member made up by adopting pre-tensioning prestressed process and centrifugal forming method, mainly formed from cylindrical pile body, end plate and steel ferrule.
After the open type pile tip is sunk into a soil layer, an inner cavity with 1/3 pile length is approximately arranged at the lower part of the pile body and is plugged by soil, the soil squeezing effect during pile sinking is smaller than that of the open type pile tip, but for coastal sandy areas, moist silt is retained in the open type pile tip type pipe pile, the inside of the pile body is easily corroded, the service life and the bearing performance of the pipe pile are reduced, and therefore the open type pipe pile is needed.
The sealed pile tip is sunk into soil layer, and the inner cavity of pile body is clear at a glance under the irradiation of electric lamp and hand-operated electric light, so that it can use visual measurement method to check pile body quality and use direct measurement method to measure pile length again.
The pile tip specification does not meet the design requirements and can also cause engineering quality accidents. The existing protective pile tip has a complex structure, is manufactured separately from a pile body, and is difficult to achieve the preset strength after being connected.
The national building standard design atlas (10G409) records a cross-shaped and conical steel pile tip structure, the pile tip and the pile body are separately manufactured and then connected by welding, the same force bearing effect as the pile body is difficult to achieve at a splicing point, the pile tip and the pile body are easy to misplace in a pile sinking process, the pile sinking difficulty is increased, the effect of closing the pile body is lost, and the cost of the steel pile tip is high.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's defect, provide a pretensioning method prestressed concrete tubular pile to the solution passes through the corrosion-resistant problem in sandy area, makes pile body bearing capacity satisfy the demands again.
The utility model discloses a realize like this:
the utility model provides a pretensioning method prestressed concrete tubular pile, including pile body and plush stake point, be equipped with the steel reinforcement cage in the pile body, the steel reinforcement cage includes a plurality of main muscle that extend along pile body length direction, is equipped with a plurality of stretch-draw holes on the plush stake point, each stretch-draw downthehole main muscle that all stretches into, plush stake point is equipped with a plurality of anchor muscle that stretch into in the pile body and together cast with the steel reinforcement cage towards one side of pile body.
Preferably, an anchoring rib is arranged between the two main ribs along the circumferential direction of the reinforcement cage.
Preferably, the anchoring ribs are distributed at equal intervals.
Preferably, the raised head pile tip comprises a joint surface connected with the pile body, and the joint surface is equal to the diameter of the pile body.
Preferably, the pile tip of the raised head is a concrete pile.
Preferably, the nose tip tapers away from the shaft.
Preferably, the axial length of the pile tip of the nose is not more than 400 mm.
Preferably, the pile tip of the raised head is of a closed type.
Preferably, one end of the pile tip of the raised head, which is far away from the pile body, is provided with a reinforcing steel plate.
The utility model discloses following beneficial effect has:
1. the utility model discloses a pretensioning method prestressed concrete tubular pile, pile point and pile body adopt stretch-draw, integration together to make for pile point and pile body structure as an organic whole, the seam crossing concrete is close and solid, can effectively prevent that groundwater from getting into the lumen, avoids the corruption of groundwater to tubular pile end plate and steel pile point.
2. The utility model discloses a pretensioning method prestressed concrete tubular pile, stake point and pile body adopt the integration to make, have cancelled the welding of the stake point of job site completely, have reduced weldment work volume, the construction management of being convenient for simultaneously.
3. The utility model discloses a pretensioning method prestressed concrete tubular pile, stake point are concrete prefabricated component, pour through anchor muscle and pile body as a whole. The cost of the concrete poured pile tip is greatly lower than that of a steel pile tip, and the economic advantage is obvious.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic view of a pretensioned prestressed concrete pipe pile provided in an embodiment of the present invention;
fig. 2 is a schematic structural view of a raised head pile tip provided in the embodiment of the present invention;
fig. 3 is a top view of the pile tip of the raised head provided by the embodiment of the present invention;
fig. 4 is the embodiment of the utility model provides a pretensioning prestressed concrete pipe pile pouring schematic diagram.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As fig. 1-4, the embodiment of the utility model provides a pretensioning method prestressed concrete tubular pile, including pile body 2 and plush stake point 1, be equipped with steel reinforcement cage 7 in the pile body 2, steel reinforcement cage 7 includes a plurality of main muscle 9 that extend along 2 length direction of pile body, is equipped with a plurality of stretch-draw holes 3 on the plush stake point 1, each stretch into a main muscle 9 in the stretch-draw hole 3, plush stake point 1 is equipped with a plurality of anchor muscle 4 that stretch into in the pile body and together cast with steel reinforcement cage 7 towards one side of pile body 2. The utility model discloses in, prefabricate plush pile tip 1 earlier, then pour structure as an organic whole through anchor muscle 4 and pile body 2, through prefabricated plush pile tip 1 for plush pile tip 1 tip bearing capacity is greater than pile body 2, reduces the damage because stress concentration leads to of pile sinking in-process.
The utility model discloses utilize the pretensioning method to add plush pile 1 when the tubular pile is prefabricated, the whole bearing capacity of tubular pile of preparation is unanimous, can solve and pass through the corrosion-resistant problem in sandy area, makes pile body bearing capacity satisfy the demands again.
Preferably, an anchoring rib 4 is arranged between the two main ribs 9 along the circumferential direction of the reinforcement cage 7, and the anchoring ribs 4 are distributed at equal intervals, so that the raised head pile tip 1 and the pile body 2 are combined more tightly.
Preferably, the raised-head pile tip 1 comprises a joint surface connected with the pile body 2, and the joint surface is equal to the diameter of the pile body 2 so as to reduce resistance in pile sinking.
Preferably, the raised head pile tip 1 is a concrete pile, and the cost of the raised head pile tip 1 for pouring the concrete is greatly lower than that of a steel pile tip, so that the method is suitable for large-scale use.
The utility model discloses in, plush pile 1 is the type of sealing, and its axial length is not more than 400 mm. Preferably, the pile tip 1 of the raised head is tapered along the direction far away from the pile body 2, and the pile sinking resistance can also be greatly reduced.
The utility model provides a pretensioning method prestressed concrete tubular pile, plush pile point 1 adopts stretch-draw, integration together with pile body 2 to make plush pile point 1 and pile body 2 structure as an organic whole, and the seam crossing concrete is dense, can effectively prevent groundwater from getting into the lumen, avoids the corruption of groundwater to tubular pile end plate and steel pile point.
The utility model provides a pretensioning method prestressed concrete tubular pile, plush 1 and pile body 2 adopt the integration to make, have cancelled the stake point welding of job site completely, have reduced welding work volume, the construction management of being convenient for simultaneously.
The utility model provides a pretensioning method prestressed concrete tubular pile, plush 1 is concrete prefabricated component, pours as a whole through anchor muscle 4 and pile body 2. The cost of the concrete poured pile tip is greatly lower than that of a steel pile tip, and the economic advantage is obvious.
The utility model discloses a construction step: prefabricating a raised head pile tip 1 with the same size as a pile body 2, reserving an anchoring rib 4 and a tensioning hole 3 on the raised head pile tip 1, placing the raised head pile tip 1 in a mold during manufacturing of the pile body 2, binding and preparing a reinforcement cage 7 of the pile body, enabling an axial main rib 9 of the reinforcement cage 7 to penetrate through the tensioning hole 3, adding a tensioning plate 8 outside the raised head pile tip 1, then pouring the pile body 2, tensioning the pile body main rib 9 by using a tensioning mechanism, and obtaining the pre-tensioning prestressed concrete pipe pile after concrete curing and curing.
As shown in fig. 1, the pretensioned prestressed concrete pipe pile comprises a raised head pile tip 1 and a pile body 2, wherein the raised head pile tip 1 is a prefabricated concrete raised head or a steel raised head, and the raised head pile tip 1 is hemispherical in the figure, and the maximum outer diameter of the raised head pile tip is almost equal to the diameter of the pile body so as to reduce resistance in pile sinking. In order to improve the connection strength between the raised head pile tip 1 and the pile body 2 and the bearing performance of the whole tubular pile, a circle of anchoring ribs 4 can be arranged on the raised head pile tip 1, as shown in fig. 2. In order to facilitate pouring together with the tubular pile and integral tensioning, a circle of tensioning holes 3 corresponding to the main ribs 9 of the reinforcement cage of the tubular pile are formed in the raised head pile tip 1, and during pouring, the main ribs 9 of the reinforcement cage penetrate through the tensioning holes 3 and are fixed with the tensioning plates 8 for prestress tensioning.
It should be noted that the utility model discloses well plush pile tip 1 is not limited to the hemisphere, and it satisfies one end and pile body 2 with the diameter, the other end for the streamlined of dwindling gradually can, can reduce pile sinking resistance greatly like this. In addition, the height of the pile tip 1 of the raised head, i.e. the distance from the tip part to the end of the pile body, is generally not more than 400 mm.
In addition, in order to increase the strength of the pile tip 1 of the raised head, a reinforcing steel plate 5 can be arranged at the front end of the raised head so as to reduce the damage to the pile tip 1 of the raised head in the pile sinking process.
The utility model discloses preparation method is as shown in fig. 4, at first prefabricate plush copper stake point 1, then the steel reinforcement cage 7 of ligature tubular pile, place steel reinforcement cage 7 and plush copper stake point 1 in mould 6, make the main muscle 9 of steel reinforcement cage 7 pass from plush copper stake point's stretch-draw hole 3, and it is fixed with stretch-draw board 8, then the compound die concreting, after concrete placement, stretch-draw main muscle 9 to the steel reinforcement cage, and locking stretch-draw force, then carry out centrifugal molding, treat pile body shaping back, cut the main muscle 9 that is located plush copper stake 1 outside, inject cement stretch-draw mortar into in toward 3 holes, sealed stretch-draw hole prevents that main muscle from being corroded, the tubular pile of making adopts ordinary pressure steam curing, generally can carry out the construction through 28 days.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. The utility model provides a pretensioning prestressed concrete tubular pile which characterized in that: the pile comprises a pile body and a raised head pile tip, wherein a steel reinforcement cage is arranged in the pile body, the steel reinforcement cage comprises a plurality of main reinforcements extending along the length direction of the pile body, a plurality of tensioning holes are formed in the raised head pile tip, each main reinforcement extends into each tensioning hole, and a plurality of anchoring reinforcements which extend into the pile body and are cast together with the steel reinforcement cage are arranged on one side, facing the pile body, of the raised head pile tip.
2. The pretensioned prestressed concrete pipe pile of claim 1, wherein: and an anchoring rib is arranged between the two main ribs along the circumferential direction of the reinforcement cage.
3. The pretensioned prestressed concrete pipe pile of claim 2, wherein: the anchoring ribs are distributed at equal intervals.
4. The pretensioned prestressed concrete pipe pile of claim 1, wherein: the raised head pile tip comprises a joint surface connected with the pile body, and the diameter of the joint surface is equal to that of the pile body.
5. The pretensioned prestressed concrete pipe pile of claim 1, wherein: the pile tip of the raised head is a concrete pile.
6. The pretensioned prestressed concrete pipe pile of claim 1, wherein: the pile tip of the raised head is gradually reduced along the direction far away from the pile body.
7. The pretensioned prestressed concrete pipe pile of claim 1, wherein: the axial length of the pile tip of the raised head is not more than 400 mm.
8. The pretensioned prestressed concrete pipe pile of claim 1, wherein: the pile tip of the raised head is in a sealed shape.
9. The pretensioned prestressed concrete pipe pile of claim 1, wherein: and a reinforcing steel plate is arranged at one end of the raised head pile tip, which is far away from the pile body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921406617.8U CN211143053U (en) | 2019-08-27 | 2019-08-27 | Pretensioned prestressed concrete pipe pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921406617.8U CN211143053U (en) | 2019-08-27 | 2019-08-27 | Pretensioned prestressed concrete pipe pile |
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| Publication Number | Publication Date |
|---|---|
| CN211143053U true CN211143053U (en) | 2020-07-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921406617.8U Active CN211143053U (en) | 2019-08-27 | 2019-08-27 | Pretensioned prestressed concrete pipe pile |
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| CN (1) | CN211143053U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114482017A (en) * | 2022-01-04 | 2022-05-13 | 中铁时代建筑设计院有限公司 | Hole sealing device for pile core of precast concrete pipe pile |
-
2019
- 2019-08-27 CN CN201921406617.8U patent/CN211143053U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114482017A (en) * | 2022-01-04 | 2022-05-13 | 中铁时代建筑设计院有限公司 | Hole sealing device for pile core of precast concrete pipe pile |
| CN114482017B (en) * | 2022-01-04 | 2024-04-19 | 中铁时代建筑设计院有限公司 | Precast concrete tubular pile stake core hole sealing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Jianhua Chenglong Building Materials (Taizhou) Co.,Ltd. Assignor: CHINA RAILWAY SIYUAN SURVEY AND DESIGN GROUP Co.,Ltd. Contract record no.: X2023420000284 Denomination of utility model: Pre tensioned prestressed concrete pipe piles Granted publication date: 20200731 License type: Common License Record date: 20230816 |
|
| EE01 | Entry into force of recordation of patent licensing contract |