CN112942316A - Prefabricated square pile and construction process thereof - Google Patents
Prefabricated square pile and construction process thereof Download PDFInfo
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- CN112942316A CN112942316A CN202110128431.6A CN202110128431A CN112942316A CN 112942316 A CN112942316 A CN 112942316A CN 202110128431 A CN202110128431 A CN 202110128431A CN 112942316 A CN112942316 A CN 112942316A
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- 238000010276 construction Methods 0.000 title claims description 15
- 238000000034 method Methods 0.000 title claims description 11
- 239000004567 concrete Substances 0.000 claims description 60
- 239000002002 slurry Substances 0.000 claims description 21
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 7
- 238000007569 slipcasting Methods 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims 1
- 239000002689 soil Substances 0.000 abstract description 17
- 239000007788 liquid Substances 0.000 description 21
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011513 prestressed concrete Substances 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/24—Prefabricated piles
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
- E02D15/04—Placing concrete in mould-pipes, pile tubes, bore-holes or narrow shafts
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/52—Piles composed of separable parts, e.g. telescopic tubes ; Piles composed of segments
- E02D5/523—Piles composed of separable parts, e.g. telescopic tubes ; Piles composed of segments composed of segments
- E02D5/526—Connection means between pile segments
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/72—Pile shoes
Abstract
The utility model relates to a prefabricated square pile, including the precast pile body, the precast pile body includes that stake point and a plurality of divide the stake, and interconnect between the adjacent stake of branch is equipped with the injected hole on the branch stake, and the injected hole intercommunication on the adjacent branch stake, the stake point setting is equipped with the first reposition of redundant personnel that the slope set up on the stake point, the one end and the injected hole intercommunication of first reposition of redundant personnel, the other end and stake point lateral wall intercommunication on the stake point. This application can strengthen the closely knit nature of precast pile body pile tip soil, has increased the tip bearing capacity, increases precast pile body bearing capacity then.
Description
Technical Field
The application relates to the field of pile foundation engineering, in particular to a prefabricated square pile and a construction process thereof.
Background
The precast pile is made of various materials and various forms (such as wooden pile, concrete square pile, prestressed concrete tubular pile, steel pile, etc.) in factory or construction site, and is driven, pressed or vibrated into the soil by pile sinking equipment. The precast pile has the advantages of convenient manufacture, high pile forming speed, easy control of pile body quality, high bearing capacity, capability of being manufactured into sections and lengths with different shapes and sizes according to requirements, no influence of underground water and no mud discharge problem, and is widely applied to the field of pile foundation engineering.
According to the stress characteristics of the prefabricated square pile in soil, for the friction end bearing pile, the compactness of a pile end soil layer has great influence on the bearing capacity of the pile, most of the prefabricated square piles are made into solid prefabricated square piles, and the solid prefabricated square piles are influenced by the structures of the solid prefabricated square piles and are difficult to enhance the compactness of the end pile soil layer.
In view of the above-mentioned related art, the inventors consider that it is necessary to develop a prefabricated square pile capable of enhancing the compactness of an end pile soil layer for the art.
Disclosure of Invention
In order to strengthen the closely knit nature of end stake soil layer, this application provides a prefabricated square pile.
In a first aspect, the application provides a prefabricated square pile, which adopts the following technical scheme:
the utility model provides a prefabricated square pile, includes the precast pile body, the precast pile body includes that stake point and a plurality of divide the stake, interconnect between the adjacent stake of branch is equipped with the injected hole on the branch stake, and adjacent branch is the injected hole intercommunication on the stake, and the stake point sets up on the branch stake that is in the tip, is equipped with the first reposition of redundant personnel hole that the slope set up on the stake point, the one end and the injected hole intercommunication of first reposition of redundant personnel hole, the other end and stake point lateral wall intercommunication.
Through adopting above-mentioned technical scheme, when the construction, connect gradually a plurality of branch stake and insert the stake that drills in advance downthehole, the branch stake that makes the connection stake point is located the below, pour into high-pressure concrete thick liquids into to the precast pile body through the slip casting hole, high-pressure concrete thick liquids through first reposition of redundant personnel discharge and form the concrete body between stake point lateral wall and stake hole, thereby strengthen the closely knit nature of precast pile body stake end soil, the tip bearing capacity has been increased, then increase precast pile body bearing capacity.
Optionally, a second diversion hole is formed in the branch pile, one end of the second diversion hole is communicated with the grouting hole, and the other end of the second diversion hole is communicated with the outer side wall of the branch pile.
Through adopting above-mentioned technical scheme, when pouring into high-pressure concrete thick liquids into the slip casting downthehole, high-pressure concrete thick liquids are discharged from second reposition of redundant personnel hole, and the concrete body is formed between branch stake lateral wall and stake hole to discharge high-pressure concrete thick liquids to consolidate the precast pile body, improve the bearing capacity of precast pile body.
Optionally, a tapered pipe is arranged in the second branch flow hole, the end with the larger inner diameter of the tapered pipe is communicated with the grouting hole, and the end with the smaller inner diameter of the tapered pipe is flush with the side wall of the branch pile.
Through adopting above-mentioned technical scheme, high-pressure concrete thick liquids flow into the conical tube in the second reposition of redundant personnel through the slip casting hole in, have the conical tube again and flow out and form the concrete body, because the less one end of conical tube internal diameter flushes with the branch stake lateral wall, then the soil sediment in the stake hole is difficult to enter into in the conical tube to the smooth discharge of high-pressure concrete has been guaranteed.
Optionally, the shunt hole is internally provided with an anti-blocking piece, the anti-blocking piece comprises an anti-blocking pipe and an anti-blocking piece, the anti-blocking pipe is inserted into the first shunt hole, the cross section of the inner hole of the anti-blocking pipe is square, one end of the anti-blocking piece is hinged in the anti-blocking pipe, and the anti-blocking piece is in a vertical state during construction.
Through adopting above-mentioned technical scheme, the setting of preventing stifled piece can prevent that the dregs of soil in the stake hole continue to go deep into to the inside possibility of first reposition of redundant personnel hole, has reduced the possibility that first reposition of redundant personnel hole is blockked up, when pouring into high-pressure concrete thick liquids into the slip casting downthehole, when high-pressure concrete thick liquids flow into first reposition of redundant personnel downthehole, prevent that the stifled piece is washed away by high-pressure concrete thick liquids, high-pressure concrete thick liquids flow first reposition of redundant personnel hole to form the concrete body between stake point and stake hole.
Optionally, a tin paper layer is arranged on the outer side wall of the branch pile.
Through adopting above-mentioned technical scheme, because underground soil is comparatively moist usually, and the tinfoil has waterproof effect, sets up the tinfoil layer on dividing a stake lateral wall, can reduce the possibility that divides a stake to be corroded by moist soil.
Optionally, the branch piles of the connecting pile tips are connected with first connecting blocks, one ends of the other branch piles are connected with second connecting blocks, the other ends of the other branch piles are connected with the first connecting blocks, circulation holes communicated with the grouting holes are formed in the first connecting blocks and the second connecting blocks, the first connecting blocks are connected with the second connecting blocks, guide rings are arranged on the first connecting blocks, annular grooves are formed in the second connecting blocks, and the guide rings are inserted into the annular grooves.
Through adopting above-mentioned technical scheme, when connecting first connecting block and second connecting block, overlap the ring channel on the guide ring earlier to position between first connecting block and the second connecting block is calibrated, makes things convenient for the quick aim at of first connecting block and second connecting block, thereby realizes the purpose of first connecting block of high-speed joint and second connecting block.
Optionally, the inner wall and the outer wall of the guide ring are both connected with a rubber layer, the side wall of the annular groove is provided with a clamping column, the rubber layer is provided with a clamping hole, the clamping column is clamped in the clamping hole, and the rubber layer abuts against the side wall of the annular groove.
Through adopting above-mentioned technical scheme, when first connecting block and second connecting block are connected, the rubber layer supports tight ring channel lateral wall, and the chucking post joint has improved the degree of compactness of being connected between first connecting block and the second connecting block in the chucking downthehole.
In a second aspect, the present application provides a construction process for a circular column formwork structure, which adopts the following technical scheme:
a construction process of a prefabricated square pile comprises the following steps:
s1, connecting a plurality of sub-piles in sequence and placing the sub-piles into pre-drilled pile holes, and placing the sub-piles connected with the pile tips at the lowest part;
s2, injecting high-pressure concrete slurry into the grouting holes on the branch piles at the top, wherein the high-pressure concrete slurry moves downwards and is discharged through the first branch holes;
and S3, forming a concrete body by the high-pressure concrete slurry flowing out of the first diversion hole.
Through adopting above-mentioned technical scheme, to the downthehole injection high-pressure concrete thick liquids of slip casting, high-pressure concrete thick liquids flow to first reposition of redundant personnel hole and follow first reposition of redundant personnel hole discharge, and the high-pressure concrete thick liquids of discharge forms the concrete body between stake point and stake hole to the compactness of precast pile body pile tip soil has been strengthened.
In summary, the present application includes at least one of the following beneficial technical effects:
1. during construction, a plurality of sub-piles are sequentially connected and inserted into the pre-drilled pile holes, so that the sub-piles connected with the pile tips are positioned at the lowest part, high-pressure concrete slurry is injected into the precast pile body through the grouting holes, the high-pressure concrete slurry is discharged through the first sub-flow holes, and a concrete body is formed between the side wall of the pile tip and the pile holes, so that the compactness of pile end soil of the precast pile body is enhanced, the bearing capacity of the end part is increased, and the bearing capacity of the precast pile body is increased;
2. when high-pressure concrete slurry is injected into the grouting hole, the high-pressure concrete slurry is discharged from the second branch flow hole, and the discharged high-pressure concrete slurry forms a concrete body between the pile branch side wall and the pile hole, so that the precast pile body is reinforced, and the bearing capacity of the precast pile body is improved.
Drawings
Fig. 1 is a schematic structural diagram for embodying a precast pile body in the embodiment of the present application.
Fig. 2 is a schematic structural diagram for showing a connection relationship between adjacent partial piles in the embodiment of the application.
Fig. 3 is an enlarged view of a portion a of fig. 2 for showing a positional relationship between the rubber boot layer and the guide ring.
Fig. 4 is a schematic structural diagram for showing a positional relationship between the shielding pipe and the first diversion hole in the embodiment of the present application.
Fig. 5 is a schematic structural diagram for embodying the anti-blocking pipe in the embodiment of the present application.
Description of reference numerals: 1. pile tip; 2. pile dividing; 3. a tin paper layer; 4. a bolt; 5. a first connection block; 6. a second connecting block; 7. a threaded pipe; 8. a flow-through hole; 9. a guide ring; 10. an annular groove; 11. a rubber layer; 12. clamping the column; 13. a clamping hole; 14. grouting holes; 15. a first diverter orifice; 16. preventing the pipe from being blocked; 17. an anti-blocking sheet; 18. an upper half pipe; 19. a lower half pipe; 20. a positioning column; 21. positioning holes; 22. a rubber sleeve; 23. a second flow dividing orifice; 24. a discharge hole; 25. a tapered tube.
Detailed Description
The present application is described in further detail below with reference to figures 1-5.
The embodiment of the application discloses a prefabricated square pile. Referring to fig. 1, the precast square pile includes the precast pile body, and the precast pile body includes stake point 1 and a plurality of branch stake 2, all is connected with the tin paper layer 3 through glue on every lateral wall that divides stake 2 to play dampproofing and waterproofing's effect, interconnect between the adjacent branch stake 2, stake point 1 sets up on the branch stake 2 that is in the tip, stake point 1 with divide 2 integrated into one piece settings of stake.
Referring to fig. 1 and 2, one end of the sub-pile 2 connected with the pile tip 1 far away from the pile tip 1 is connected with a first connecting block 5, one end of the other branch piles 2 is connected with a second connecting block 6, the other end is connected with a first connecting block 5, the first connecting block 5 and the second connecting block 6 are both connected on the branch piles 2 through bolts 4, threaded pipes 7 are pre-embedded on the branch piles 2, stepped holes are respectively arranged on the first connecting block 5 and the second connecting block 6, the bolts 4 penetrate through the stepped holes and are in threaded connection in the threaded pipes 7, and the bolt cap of bolt 4 is in the shoulder hole, all is equipped with circulation hole 8 on first connecting block 5 and the second connecting block 6, and circulation hole 8 on first connecting block 5 and the circulation hole 8 on the second connecting block 6 intercommunication, and first connecting block 5 links to each other with second connecting block 6, in this embodiment, through welded mode fixed connection between first connecting block 5 and the second connecting block 6.
Referring to fig. 2 and 3, fixedly connected with guide ring 9 on the first connecting block 5, be equipped with ring channel 10 on the second connecting block 6, guide ring 9 is inserted and is established in ring channel 10, all be connected with rubber layer 11 on the inner wall of guide ring 9 and the outer wall, be equipped with chucking post 12 on the ring channel 10 lateral wall, the tip of chucking post 12 is the hemisphere setting, be equipped with chucking hole 13 on rubber layer 11, chucking post 12 joint is in chucking hole 13, rubber layer 11 supports tight ring channel 10 lateral wall, thereby improve the degree of compactness of being connected between first connecting block 5 and the second connecting block 6.
Referring to fig. 2 and 4, grouting holes 14 are preset in the sub-piles 2, the length direction of the grouting holes 14 is the same as that of the sub-piles 2, the grouting holes 14 penetrate through the sub-piles 2, the grouting holes 14 in the adjacent sub-piles 2 are communicated through circulation holes 8, the center line of each circulation hole 8 is overlapped with the center line of each grouting hole 14, a first downward inclined diversion hole 15 is formed in the pile tip 1, one end of each first diversion hole 15 is communicated with the corresponding grouting hole 14, the other end of each first diversion hole 15 is communicated with the side wall of the pile tip 1, the number of the first diversion holes 15 is the same as that of the side walls of the pile tip 1, and each side wall of the pile tip 1 is communicated with one first diversion.
Referring to fig. 4 and 5, an anti-blocking member is arranged in the first diversion hole 15, the anti-blocking member comprises an anti-blocking pipe 16 and an anti-blocking piece 17, the cross section of an inner hole of the anti-blocking pipe 16 is square, the anti-blocking pipe 16 comprises an upper half pipe 18 and a lower half pipe 19, the upper half pipe 18 is connected with a positioning column 20, the lower half pipe 19 is connected with a positioning hole 21, the positioning column 20 is inserted into the positioning hole 21, the upper half pipe 18 and the lower half pipe 19 are fastened through a rubber sleeve 22, the rubber sleeve 22 is sleeved on the anti-blocking pipe 16, the rubber sleeve 22 tightly abuts against the side wall of the anti-blocking pipe 16, the upper half pipe 18 tightly abuts against the lower half pipe 19, the rubber sleeve 22 is tensioned, the anti-blocking pipe 16 sleeved with the rubber sleeve 22 is inserted into the first diversion hole 15, the rubber sleeve 22 tightly abuts against the inner wall of the first diversion hole 15, one end of the anti-blocking piece 17 is, thereby playing a role of blocking and reducing the possibility that the soil slag continues to enter the first diversion hole 15.
Referring to fig. 1 and 2, a second shunt hole 23 is formed in the branch pile 2, one end of the second shunt hole 23 is communicated with the grouting hole 14, the other end of the second shunt hole 23 is communicated with the outer side wall of the branch pile 2, a discharge hole 24 is formed in the tinfoil layer 3, the discharge hole 24 is communicated with the second shunt hole 23, a conical pipe 25 is connected in the second shunt hole 23, concrete is filled in a gap between the conical pipe 25 and the second shunt hole 23, so that the conical pipe 25 is fixed in the second shunt hole 23, the end, with the larger inner diameter, of the conical pipe 25 is communicated with the grouting hole 14, and the end, with the smaller inner diameter, of the conical pipe 25 is flush.
The implementation principle of the prefabricated square pile in the embodiment of the application is as follows: during construction, the annular groove 10 on the second connecting block 6 is sleeved on the guide ring 9 on the first connecting block 5, in the moving process of the second connecting block 6, the relative position between the annular groove 10 and the guide ring 9 changes, when the clamping column 12 abuts against the rubber layer 11, the rubber layer 11 is extruded and deformed, when the clamping column 12 encounters the clamping hole 13, the clamping column 12 enters the clamping hole 13, the first connecting block 5 abuts against the second connecting block 6, the rubber layer 11 abuts against the inner wall of the annular groove 10, then the first connecting block 5 and the second connecting block 6 are welded together, connection between adjacent sub-piles 2 is completed, the steps are repeated, a plurality of sub-piles 2 are sequentially connected and inserted into the pre-drilled pile holes, and the sub-piles 2 connected with the pile tips 1 are located at the lowest position.
Through the high-pressure concrete thick liquids of pouring into this internal injection of precast pile through injected hole 14, partly high-pressure concrete thick liquids flow to in the first reposition of redundant personnel, the high-pressure concrete thick liquids in the first reposition of redundant personnel will prevent that the jam piece 17 is washed away, high-pressure concrete thick liquids flow first reposition of redundant personnel hole 15 to form the concrete body between stake point 1 and stake hole, strengthened the closely knit nature of precast pile body pile tip soil, increased the tip bearing capacity, increase precast pile body bearing capacity then.
When injecting high-pressure concrete thick liquids into the precast pile body, partly high-pressure concrete thick liquids flow to second reposition of redundant personnel orifice 23 in addition, and this part high-pressure concrete thick liquids flow out through conical tube 25, and the high-pressure concrete thick liquids that flow out form the concrete body between branch 2 lateral walls of stake and stake holes to consolidate the precast pile body, improved the closely knit nature of branch 2 soil on every side, improve the bearing capacity of precast pile body.
The embodiment of the application also discloses a construction process of the prefabricated square pile, which comprises the following steps:
s1, sequentially connecting a plurality of sub-piles 2 and placing the sub-piles into pre-drilled pile holes, placing the sub-piles 2 connected with pile tips 1 at the lowest position, inserting positioning columns 20 on an upper half pipe 18 into positioning holes 21 on a lower half pipe 19 before placing the sub-piles 2 into the pile holes, sleeving rubber sleeves 22 on the upper half pipe 18 and the lower half pipe 19, splicing the upper half pipe 18 and the lower half pipe 19 into a complete anti-blocking pipe 16, inserting the anti-blocking pipe 16 sleeved with the rubber sleeves 22 into a first sub-flow hole 15, during construction, enabling anti-blocking pieces 17 in the anti-blocking pipe 16 to be in a vertical state, inserting a conical pipe 25 into a second sub-flow hole 23, enabling a grouting hole 14 at one end with a larger inner diameter of the conical hole to be communicated, enabling one end with a smaller inner diameter of the conical hole to be flush with the side walls of the sub-piles 2, filling concrete between the conical hole and the second sub-flow hole 23, and fixing the conical pipe 25;
s11: when adjacent pile branches 2 are connected, the annular groove 10 on the second connecting block 6 is sleeved on the guide ring 9 on the first connecting block 5, the rubber layer 11 is extruded by the clamping column 12 to deform in the process that the second connecting block 6 moves towards the direction close to the first connecting block 5 until the clamping column 12 enters the clamping hole 13, so that the second connecting block 6 is abutted against the first connecting block 5, the rubber layer 11 is abutted against the inner wall of the annular groove 10, and then the first connecting block 5 and the second connecting block 6 are welded together;
s2, injecting high-pressure concrete slurry into the grouting holes 14 on the branch piles 2 at the top, wherein the high-pressure concrete slurry moves downwards and is discharged through the first branch flow holes 15 and the conical pipes 25;
and S3, forming a concrete body by the high-pressure concrete slurry flowing out through the first diversion holes 15 and the tapered pipe 25.
The implementation principle of the construction process of the prefabricated square pile in the embodiment of the application is as follows: arranging the tapered pipe 25 in the second diversion hole 23, installing the anti-blocking pipe 16 with the anti-blocking piece 17 in the first diversion hole 15, connecting a plurality of the branch piles 2 in sequence and placing the branch piles 2 in the pre-drilled pile holes, placing the branch piles 2 connected with the pile tip 1 at the lowest position, wherein the anti-blocking piece 17 is in a vertical state, injecting high-pressure concrete slurry into the grouting hole 14, the high-pressure concrete slurry flows out through the first diversion hole 15 and the second diversion hole 23, and when the high-pressure concrete slurry passes through the first diversion pipe, the high-pressure concrete slurry washes the anti-blocking piece 17 apart, so that the high-pressure concrete slurry smoothly flows out of the first diversion hole 15, the high-pressure concrete slurry flowing out through the first diversion hole 15 forms a concrete body at the pile tip 1, the compactness of the precast pile body is enhanced, the end bearing capacity is increased, the bearing capacity of the precast pile body is further increased, the high-pressure concrete slurry flowing out through the second diversion hole 23 forms a concrete body at the side wall of the branch pile 2, the bearing capacity of the precast pile body is further increased.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. The utility model provides a precast square pile, includes precast pile body, its characterized in that: the precast pile body includes stake point (1) and a plurality of branch stake (2), interconnect between adjacent branch stake (2), be equipped with injected hole (14) on branch stake (2), injected hole (14) intercommunication on adjacent branch stake (2), stake point (1) sets up on branch stake (2) that is in the tip, be equipped with first reposition of redundant personnel hole (15) that inclines downwards on stake point (1), the one end and the injected hole (14) intercommunication of first reposition of redundant personnel hole (15), the other end and stake point (1) lateral wall intercommunication.
2. The precast square pile of claim 1, wherein: be equipped with second reposition of redundant personnel hole (23) on branch stake (2), the one end and the slip casting hole (14) intercommunication of second reposition of redundant personnel hole (23), the other end and branch stake (2) lateral wall intercommunication.
3. A precast square pile according to claim 2, wherein: be equipped with conical tube (25) in second reposition of redundant personnel orifice (23), the great one end of conical tube (25) internal diameter communicates with injected hole (14), and the less one end of conical tube (25) internal diameter flushes with branch stake (2) lateral wall.
4. The precast square pile of claim 1, wherein: the branch downthehole anti-blocking piece that is equipped with of reposition of redundant personnel, anti-blocking piece including preventing stifled pipe (16) and preventing stifled piece (17), prevent stifled pipe (16) and insert and establish in first reposition of redundant personnel hole (15), prevent that the cross-section in stifled pipe (16) inside hole is square, prevent that the one end of stifled piece (17) articulates in preventing stifled pipe (16), during the construction, prevent that stifled piece (17) are in vertical state.
5. The precast square pile of claim 1, wherein: and the outer side wall of the branch pile (2) is provided with a tin paper layer (3).
6. The precast square pile of claim 1, wherein: connect and be connected with first connecting block (5) on branch stake (2) of stake point (1), the one end of all the other branch stake (2) is connected with second connecting block (6), the other end is connected with first connecting block (5), all be equipped with circulation hole (8) of intercommunication injected hole (14) on first connecting block (5) and second connecting block (6), first connecting block (5) link to each other with second connecting block (6), be equipped with guide ring (9) on first connecting block (5), be equipped with ring channel (10) on second connecting block (6), guide ring (9) are inserted and are established in ring channel (10).
7. The precast square pile of claim 6, wherein: all be connected with rubber layer (11) on the inner wall of guide ring (9) and the outer wall, be equipped with chucking post (12) on ring channel (10) lateral wall, be equipped with chucking hole (13) on rubber layer (11), chucking post (12) joint is in chucking hole (13), and rubber layer (11) support tight ring channel (10) lateral wall.
8. A construction process using the prefabricated square pile according to any one of claims 1 to 7, wherein: the method comprises the following steps:
s1, connecting a plurality of sub-piles (2) in sequence and placing the sub-piles into pre-drilled pile holes, and placing the sub-piles (2) connected with the pile tips (1) at the lowest part;
s2, injecting high-pressure concrete slurry into the grouting holes (14) on the branch piles (2) at the top, and discharging the high-pressure concrete slurry downwards through the first branch holes (15);
and S3, forming a concrete body by the high-pressure concrete slurry flowing out of the first diversion holes (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110128431.6A CN112942316A (en) | 2021-01-29 | 2021-01-29 | Prefabricated square pile and construction process thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110128431.6A CN112942316A (en) | 2021-01-29 | 2021-01-29 | Prefabricated square pile and construction process thereof |
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| CN112942316A true CN112942316A (en) | 2021-06-11 |
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| CN202110128431.6A Pending CN112942316A (en) | 2021-01-29 | 2021-01-29 | Prefabricated square pile and construction process thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114635416A (en) * | 2022-03-17 | 2022-06-17 | 深圳宏业基岩土科技股份有限公司 | Construction method for preventing leakage of water of prestressed pipe pile |
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| US20180010314A1 (en) * | 2015-01-23 | 2018-01-11 | Ferrovial Agroman, S.A. | A foundation pile, a grouting method for the said pile and a manufacturing method therefor |
| CN106906822A (en) * | 2017-03-08 | 2017-06-30 | 威海齐德新型建材有限公司 | A kind of prefabricated foundation stake and construction method |
| CN108532592A (en) * | 2018-04-16 | 2018-09-14 | 中国地质大学（武汉） | A kind of grouting behind shaft or drift lining pile crown and grouting behind shaft or drift lining construction method |
| CN211816210U (en) * | 2019-12-24 | 2020-10-30 | 梁忠文 | Building foundation area stake big-end prestressed pipe pile |
| CN112227353A (en) * | 2020-11-06 | 2021-01-15 | 河南聚誉帆工程技术咨询有限公司 | Assembled integral static pressure pile |
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| CN114635416A (en) * | 2022-03-17 | 2022-06-17 | 深圳宏业基岩土科技股份有限公司 | Construction method for preventing leakage of water of prestressed pipe pile |
| CN114635416B (en) * | 2022-03-17 | 2024-01-23 | 深圳宏业基岩土科技股份有限公司 | Construction method for preventing water leakage of prestressed pipe pile |
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