CN215483155U - Prefabricated anti-floating anchor rod pile and underground anti-floating structure - Google Patents
Prefabricated anti-floating anchor rod pile and underground anti-floating structure Download PDFInfo
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- CN215483155U CN215483155U CN202121376845.2U CN202121376845U CN215483155U CN 215483155 U CN215483155 U CN 215483155U CN 202121376845 U CN202121376845 U CN 202121376845U CN 215483155 U CN215483155 U CN 215483155U
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Abstract
The utility model provides a prefabricated anti-floating anchor rod pile and an underground anti-floating structure, which comprise: the pile comprises a pile body and a rigid framework embedded in the pile body, wherein the rigid framework comprises a plurality of vertical main reinforcements arranged at intervals in the circumferential direction and hoops of the vertical main reinforcements of hoops; the vertical main reinforcement is provided with an embedded section embedded in the pile body, an extending section extending outwards from the end part of the embedded section and exposed out of the end part of the pile body, and a bending section bending from the extending section towards the other end of the pile body, wherein the embedded section, the extending section and the bending section are sequentially connected; the height L1 of the extension section in the vertical direction is smaller than the height L2 of the bending section in the vertical direction, so that after the prefabricated anti-floating anchor rod pile is sunk into a pile hole, the bending section can be anchored into a cast-in-place layer formed by secondary grouting, the connection strength of the prefabricated anti-floating anchor rod pile and the cast-in-place layer is further improved, and the anti-pulling performance of the prefabricated anti-floating anchor rod pile is improved.
Description
Technical Field
The utility model relates to the field of underground engineering, in particular to a prefabricated anti-floating anchor rod pile and an underground anti-floating structure.
Background
Along with the development of urban construction, underground projects are more and more, the anti-floating problem of basements is more and more prominent, and anti-floating piles are widely applied to large basements.
At present, the anti-floating pile generally adopts a cast-in-situ bored pile and an anti-floating anchor rod to realize the anti-floating function. The cast-in-situ bored pile has long construction time and wastes time and labor, and the adoption of the anti-floating anchor rod requires anchoring in a hard rock mass, so that the cast-in-situ bored pile is not suitable for soft rock and soil mass, and the damage is usually the damage of the anchored rock mass; because local stock is denser, the stock construction is inconvenient, and basement bottom plate beam slab arrangement of reinforcement is great.
Although it is proposed to adopt a prestressed pipe pile to achieve the anti-floating function, the pipe pile is limited to a hole forming process, is only suitable for soft soil foundations, and has a weak anti-pulling effect.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present invention provides a prefabricated anti-floating anchor pile with high pulling resistance.
In order to solve the technical problems, the utility model adopts the following technical scheme:
a prefabricated anti-floating anchor pile comprising: the pile comprises a pile body and a rigid framework embedded in the pile body, wherein the rigid framework comprises a plurality of vertical main reinforcements arranged at intervals in the circumferential direction and hoops of the vertical main reinforcements of hoops;
the vertical main reinforcement is provided with an embedded section embedded in the pile body, an extending section extending outwards from the end part of the embedded section and exposed out of the end part of the pile body, and a bending section bending from the extending section towards the other end of the pile body, wherein the embedded section, the extending section and the bending section are sequentially connected;
the height L1 of the extension section in the vertical direction is smaller than the height L2 of the bending section in the vertical direction.
Preferably, the bending section has at least one S-shaped bending section.
Preferably, the pile body sequentially and alternately forms a plurality of large section sections and small section sections in the length direction, and the large section sections and the small section sections are in transition connection through inclined planes or right-angle planes.
Preferably, the bottom of the pile body is formed with an enlarged portion.
Preferably, a plurality of grouting channels are reserved in the pile body;
and/or a plurality of grouting channels are arranged on the outer wall of the pile body at intervals in the circumferential direction.
Preferably, the grouting channel is continuously communicated from the top of the pile body to the bottom of the pile body.
Preferably, the grouting channel is continuously communicated from the top of the pile body to the bottom of the pile body, and a branched channel communicated with the grouting channel is formed in the middle of the pile body.
Preferably, the cross section of the pile body is circular, square, hexagonal or octagonal.
The utility model also provides an underground anti-floating structure which comprises the prefabricated anti-floating anchor rod pile and a cast-in-place layer, wherein after the prefabricated anti-floating anchor rod pile is implanted into the preset pile hole, a cementing material is poured into the grouting channel so as to form the cast-in-place layer between the prefabricated anti-floating anchor rod pile and the inner wall of the preset pile hole, and the bent section of the vertical main rib is anchored into the cast-in-place layer.
Preferably, the extension section and the bending section of the vertical main rib exposed out of the cast-in-place layer are anchored into an external bearing platform and/or a basement bottom plate.
Compared with the prior art, the utility model has the beneficial effects that: through forming pre-buried section, extension section, buckling piece at vertical main muscle to extension section height L1 in vertical direction is less than buckling piece height L2 in vertical direction makes prefabricated anti-floating anchor rod pile after sinking into the stake hole, and the buckling piece can anchor the cast-in-place layer that secondary slip casting formed, thereby further improves the joint strength on prefabricated anti-floating anchor rod pile and cast-in-place layer, improves the resistance to plucking performance of prefabricated anti-floating anchor rod pile.
Drawings
Fig. 1 is a schematic structural view of a prefabricated anti-floating anchor pile implanted into a pile hole in embodiment 1 of the utility model;
fig. 2 is a schematic structural view of a prefabricated anti-floating anchor pile implanted into a pile hole in embodiment 2 of the utility model;
fig. 3 is a schematic structural view of a prefabricated anti-floating anchor pile implanted into a pile hole in embodiment 3 of the utility model;
fig. 4 is a schematic structural view of a prefabricated anti-floating anchor pile implanted into a pile hole in embodiment 4 of the utility model;
fig. 5 is a schematic structural view of a prefabricated anti-floating anchor pile implanted into a pile hole in embodiment 5 of the utility model;
Detailed Description
In order to facilitate understanding of the technical solutions of the present invention, the following detailed description is made with reference to the accompanying drawings and specific embodiments.
Example 1
As shown in fig. 1, a prefabricated anti-floating anchor pile includes: the pile comprises a pile body 1 and a rigid framework 2 pre-buried in the pile body 1, wherein the rigid framework 2 comprises a plurality of vertical main reinforcements 21 arranged at intervals in the circumferential direction and hoops 22 of the vertical main reinforcements 21; the vertical main reinforcement 21 is provided with an embedded section 211 embedded in the pile body 1, an extending section 212 extending outwards from the end of the embedded section 211 and exposed at the end of the pile body 1, and a bending section 213 bending from the extending section 212 towards the other end of the pile body 1, wherein the embedded section 211, the extending section 212 and the bending section 213 are sequentially connected; the height L1 of the extension section 212 in the vertical direction is smaller than the height L2 of the bending section 213 in the vertical direction.
In the structure, the embedded section 211, the extending section 212 and the bending section 213 are formed on the vertical main rib 21, and the height L1 of the extending section 212 in the vertical direction is smaller than the height L2 of the bending section 213 in the vertical direction, so that after the prefabricated anti-floating anchor rod pile 100 is sunk into a pile hole, the bending section 213 can be anchored into the cast-in-situ layer 5 formed by secondary grouting, the connection strength of the prefabricated anti-floating anchor rod pile 100 and the cast-in-situ layer 5 is further improved, and the anti-pulling performance of the prefabricated anti-floating anchor rod pile 100 is improved. In the present embodiment, the embedded section 211, the extending section 212, and the bending section 213 are formed by bending the vertical main rib 21. The cross section of the pile body 1 can be circular, square, hexagonal or octagonal, and is not limited herein.
Furthermore, a plurality of grouting channels 3 are reserved in the pile body 1, and the grouting channels 3 are continuously communicated from the top of the pile body to the bottom of the pile body. That is, after the prefabricated anti-floating anchor pile 100 is implanted into a pile hole, secondary grouting is performed through the grouting channel 3 reserved in the pile body 1, so that a cementing material enters the bottom of the pile body through the grouting channel 3 and overflows to gradually fill a reserved space between the outer wall of the pile body 1 and the pile hole, and after the cementing material is solidified, the prefabricated anti-floating anchor pile 100 is integrated with a soil layer. Of course, in this embodiment, a plurality of grouting channels 3 may be provided at intervals in the circumferential direction on the outer wall of the pile body 1. In addition, in the present embodiment, the cementitious material is high-strength concrete. The grouting channel can be formed by pre-burying a pipeline on the pile body 1.
Example 2
In this embodiment, the same portions as those in embodiment 1 are given the same reference numerals, and the same description is omitted.
The present embodiment is different from embodiment 1 in that: the structure of the bending section 213 is different.
As shown in fig. 2, in this embodiment, the bending section 213 has at least one S-shaped bending section, so that when the bending section 213 is anchored into the cast-in-place layer, the anchoring strength of the bending section 213 is improved, and the pulling resistance of the prefabricated anti-floating anchor pile 100 is further improved.
Example 3
In this embodiment, the same portions as those in embodiment 1 are given the same reference numerals, and the same description is omitted.
The present embodiment is different from embodiment 1 in that: the pile body 1 has different structures.
As shown in fig. 3, the pile body 1 sequentially and alternately forms a plurality of large cross-section sections 11 and small cross-section sections 12 in the length direction, and the large cross-section sections 11 and the small cross-section sections 12 are transitionally connected through inclined planes or right-angle planes. In this embodiment, after the secondary grouting and concrete filling and setting are performed through the plurality of large section sections 11 and small section sections 12 formed alternately in sequence, the pile body 1 and the cast-in-place layer 5 have a clamping capacity, so that the uplift resistance of the prefabricated anti-floating anchor pile 100 is further improved.
Example 4
In this embodiment, the same portions as those in embodiment 1 are given the same reference numerals, and the same description is omitted.
The present embodiment is different from embodiment 1 in that: the pile body 1 has different structures.
As shown in fig. 4, the bottom of the pile body 1 is formed with an enlarged portion 13. In this embodiment, the enlarged part 13 at the bottom of the pile body 1 is directly manufactured and formed when the pile body 1 is prefabricated in the factory. After the prefabricated anti-floating anchor rod pile 100 is implanted into the pile hole, the enlarged part 13 can be clamped with a cast-in-place layer, and the anti-pulling capacity of the prefabricated anti-floating anchor rod pile 100 is further improved. In addition, during prefabrication, the part of the enlarged part 13 protruding relative to the pile body 1 is made of plain concrete, which is relatively fragile, easy to crack and poor in stress effect, so that the rigid net piece 131 is embedded in the enlarged part 13 to prevent the enlarged part from cracking when the enlarged part is subjected to buoyancy.
Of course, the enlarged portion 13 may also be formed by secondary grouting after the prefabricated anti-floating anchor pile 100 is planted in the pile hole, that is, when the pile hole is drilled, a cavity for forming the enlarged portion 13 is drilled by a drilling machine, and after the prefabricated anti-floating anchor pile 100 is planted in the pile hole, secondary grouting is performed, and concrete fills the cavity to form the enlarged portion 13.
Example 5
In this embodiment, the same portions as those in embodiment 1 are given the same reference numerals, and the same description is omitted.
The present embodiment is different from embodiment 1 in that: the grouting channel 3 is different in structure.
As shown in fig. 5, in the present embodiment, the grouting passage 3 continuously penetrates from the top of the pile body 1 to the bottom of the pile body 1, and a branch passage 4 communicating with the grouting passage 3 is formed in the middle of the pile body 1. The branch passages 4 may be arranged in plurality at intervals in the axial direction.
That is, in this embodiment, the secondary grouting concrete flows out not only from the bottom of the grouting channel 3 but also from the branch channel 4 in the middle of the pile body 1. This is because as the concrete is gradually output from the grouting channel 3, the height of the cast-in-place layer 5 is continuously increased, the pressure at the bottom of the grouting channel 3 is gradually increased, the load of the pumping device is also increased, and the fluidity of the concrete is poor due to the characteristics of the concrete, so that higher requirements are put on the pumping device, and when the pumping device cannot increase the pressure and cannot pump the concrete, the concrete is gradually condensed in the pumping device, so that the pumping device is damaged. In this embodiment, after the cast-in-place layer 5 reaches a certain height, the pumping device cannot continue pumping concrete to raise the height of the cast-in-place layer 5 through the branch channel 4, and at this time, the concrete can flow out of the branch channel 4 in the middle of the pile body 1, so that the pumping device is prevented from being blocked.
Example 6
In this embodiment, the same portions as those in embodiment 1 are given the same reference numerals, and the same description is omitted.
As shown in fig. 1 to 5, the present embodiment provides an underground anti-floating structure, which includes any one of the prefabricated anti-floating anchor piles described in embodiments 1 to 5, and further includes a cast-in-place layer 5, after the prefabricated anti-floating anchor pile 100 is implanted into a predetermined pile hole, a cementing material is poured into the grouting channel 3, so as to form the cast-in-place layer 5 between the prefabricated anti-floating anchor pile 100 and an inner wall of the predetermined pile hole, and the bent section 213 of the vertical main rib 21 is anchored in the cast-in-place layer 5.
In addition, in the present embodiment, the portions of the extending sections 212 and the bending sections 213 of the vertical main ribs 21 exposed on the cast-in-place layer 5 are anchored into an external bearing platform and/or a basement floor (not shown).
In the structure, the vertical main reinforcement 21, the external bearing platform and the basement bottom plate are not only connected with each other through reinforced concrete, but also can be connected with the reinforcing steel bars of the external bearing platform and/or the basement bottom plate through the extension section 212 and the bending section 213 exposed on the cast-in-place layer 5 in a bending, clamping or binding manner, so as to further improve the connection strength.
The above is only a preferred embodiment of the present invention, and the scope of the present invention is defined by the appended claims, and several modifications and amendments made by those skilled in the art without departing from the spirit and scope of the present invention should be construed as the scope of the present invention.
Claims (10)
1. A prefabricated anti-floating anchor pile, comprising: the pile comprises a pile body (1) and a rigid framework (2) pre-buried in the pile body (1), wherein the rigid framework (2) comprises a plurality of vertical main reinforcements (21) arranged at intervals in the circumferential direction and hoops (22) of the vertical main reinforcements (21) of a hoop;
the vertical main reinforcement (21) is provided with an embedded section (211) embedded in the pile body (1), an extension section (212) extending outwards from the end part of the embedded section (211) and exposed out of the end part of the pile body (1), and a bending section (213) bending from the extension section (212) towards the other end of the pile body (1), wherein the embedded section (211), the extension section (212) and the bending section (213) are sequentially connected;
the height L1 of the extension section (212) in the vertical direction is smaller than the height L2 of the bending section (213) in the vertical direction.
2. A prefabricated anti-floating anchor pile according to claim 1, characterised in that the bent section (213) has at least one S-bend section.
3. A prefabricated anti-floating anchor pile according to claim 1, characterized in that the pile body (1) is formed with a plurality of large cross-section sections (11) and small cross-section sections (12) in turn in the length direction, and the large cross-section sections (11) and the small cross-section sections (12) are transitionally connected by an inclined plane or a right-angle plane.
4. A prefabricated anti-floating anchor pile according to claim 1, characterised in that the bottom of the pile body (1) is formed with an enlargement (13).
5. The precast anti-floating anchor rod pile according to claim 1, characterized in that a plurality of grouting channels (3) are reserved in the pile body (1);
and/or a plurality of grouting channels (3) are arranged on the outer wall of the pile body (1) at intervals in the circumferential direction.
6. A prefabricated anti-floating anchor pile according to claim 5, characterised in that the grouting channel (3) is continuous from the top of the pile body (1) to the bottom of the pile body (1).
7. The precast anti-floating anchor pile according to claim 5, characterized in that the grouting channel (3) is continuously communicated from the top of the pile body (1) to the bottom of the pile body (1), and a branched channel (4) communicated with the grouting channel (3) is formed in the middle of the pile body (1).
8. A prefabricated anti-floating anchor pile according to claim 1, characterised in that the cross-section of the pile body (1) is circular, square, hexagonal, octagonal.
9. An underground anti-floating structure comprising the prefabricated anti-floating anchor pile of any one of claims 1 to 8, characterized by further comprising a cast-in-place layer (5), wherein after the prefabricated anti-floating anchor pile (100) is implanted in a predetermined pile hole, a cementing material is poured into the grouting channel (3) to form the cast-in-place layer (5) between the prefabricated anti-floating anchor pile (100) and the inner wall of the predetermined pile hole, and the bent section (213) of the vertical main rib (21) is anchored in the cast-in-place layer (5).
10. An underground anti-floating structure according to claim 9, characterized in that the parts of the extending sections (212) and the bending sections (213) of the vertical main ribs (21) exposed out of the cast-in-place layer (5) are anchored into an external bearing platform and/or a basement floor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121376845.2U CN215483155U (en) | 2021-06-21 | 2021-06-21 | Prefabricated anti-floating anchor rod pile and underground anti-floating structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121376845.2U CN215483155U (en) | 2021-06-21 | 2021-06-21 | Prefabricated anti-floating anchor rod pile and underground anti-floating structure |
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| Publication Number | Publication Date |
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| CN215483155U true CN215483155U (en) | 2022-01-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202121376845.2U Active CN215483155U (en) | 2021-06-21 | 2021-06-21 | Prefabricated anti-floating anchor rod pile and underground anti-floating structure |
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| CN (1) | CN215483155U (en) |
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- 2021-06-21 CN CN202121376845.2U patent/CN215483155U/en active Active
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