CN216973387U - High-pressure jet inserting core combined pile - Google Patents
High-pressure jet inserting core combined pile Download PDFInfo
- Publication number
- CN216973387U CN216973387U CN202120912954.5U CN202120912954U CN216973387U CN 216973387 U CN216973387 U CN 216973387U CN 202120912954 U CN202120912954 U CN 202120912954U CN 216973387 U CN216973387 U CN 216973387U
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- pile
- core
- pressure jet
- threads
- jet grouting
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- 230000002787 reinforcement Effects 0.000 claims description 16
- 238000003466 welding Methods 0.000 claims description 16
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 239000002131 composite material Substances 0.000 claims description 4
- 230000011218 segmentation Effects 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims 4
- 238000003780 insertion Methods 0.000 claims 4
- 239000002689 soil Substances 0.000 abstract description 10
- 239000004568 cement Substances 0.000 description 8
- 239000002002 slurry Substances 0.000 description 7
- 238000010276 construction Methods 0.000 description 5
- 239000010410 layer Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 3
- 239000004567 concrete Substances 0.000 description 3
- 239000011513 prestressed concrete Substances 0.000 description 3
- 239000010881 fly ash Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000009750 centrifugal casting Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
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- Piles And Underground Anchors (AREA)
Abstract
The utility model belongs to the technical field of buildings, and particularly discloses a high-pressure jet grouting core-inserting combined pile which comprises a core pile and a high-pressure jet grouting pile, wherein threads are arranged on the circumference of the outer wall of the core pile, a conical pile tip is arranged at the bottom of the core pile, the high-pressure jet grouting pile is arranged on the outer side of the core pile in a segmented mode, the core pile of the high-pressure jet grouting core-inserting combined pile is a main bearer of upper load, stress is concentrated towards the core pile, and the contact area of the core pile with a rock-soil body and the high-pressure jet grouting pile is increased by arranging the threads on the outer wall of the core pile, so that the side friction resistance of the core pile is increased, and the bearing capacity of the high-pressure jet grouting core-inserting combined pile is improved.
Description
Technical Field
The utility model belongs to the technical field of buildings, and particularly relates to a high-pressure jet inserting core combined pile.
Background
At present, in the structure type of various foundation pile foundations for building engineering, bridge engineering, municipal works, hydraulic engineering, there are single structure type stake and composite construction type stake, but all have some shortcomings inevitably: the prestressed pipe pile is difficult to penetrate through hard soil interlayers such as silt, silt and the like, and the hard penetration can cause a large amount of pile cutting or the bearing capacity can not meet the requirement; vibration generated in the manufacturing process of the rammed and expanded pile greatly disturbs residents; in addition, the core pile of the high-pressure jet inserting core combined pile is a main bearer of upper load, but the core pile mostly adopts a prestressed concrete pipe pile or a square pile, the outer wall is extremely smooth, the friction resistance of the pile side is lower, and the improvement of the bearing capacity of the combined pile is not facilitated.
Disclosure of Invention
The utility model aims to provide a high-pressure jet grouting core-inserting combined pile, which can increase the friction force between a core pile and a rock-soil body and between the core pile and a high-pressure jet grouting pile and improve the bearing capacity.
In order to achieve the purpose, the utility model adopts the technical scheme that:
the utility model provides a high lock pin composite pile that spouts, spouts the stake soon including core stake and high pressure, core stake outer wall circumference is equipped with the screw thread, and core stake bottom is equipped with toper stake point, the high pressure spouts the stake soon and is the segmentation form and sets up in the core stake outside, can spout the stake segmentation along the core stake evenly setting soon with high pressure according to specific use needs, also can spout the stake soon with high pressure and locate core stake upper portion alone or locate core stake lower part alone.
The core pile is hollow precast pile, evenly is equipped with eight prestressed reinforcement along the circumference in the core pile, and vertical welding along prestressed reinforcement has a plurality of stirrups, and the stirrup distributes along prestressed reinforcement longitudinal direction, the prestressed reinforcement both ends are equipped with an anchorage device respectively.
The anchorage device is disc-shaped, and holes for the prestressed reinforcements to penetrate through are formed in the circumference of the anchorage device.
Still be equipped with a circular welded plate between ground tackle and the toper stake point, be equipped with eight welding holes on the circular welded plate, the size in welding hole and the size phase-match of prestressing steel cross-section, circular welded plate passes through the welding mode to be fixed in prestressing steel one end.
The pile diameter of the high-pressure jet grouting pile is 600-1000mm, the pile length is 20-40m, the grouting slurry is cement slurry, the grade of the cement is not lower than 42.5, one or more of fly ash, an early strength agent and an accelerating agent can be added into the cement slurry, and the construction method of the high-pressure jet grouting pile adopts a double-pipe method or a three-pipe method.
The threads are anticlockwise rotated threads, the width of the threads is 10-30cm, the thickness of the threads is 4-6cm, and the distance between the threads is 50-80 cm.
Further, the pile length of each core pile section is 20-40m, the outer diameter of the core pile section is 800mm along 600-300 mm along 150-300 mm.
The utility model has the advantages that: by adopting the technical scheme, the prestressed reinforcement is added into the concrete pipe pile, so that the strength of the concrete pipe pile can be increased; the outer wall of the prestressed concrete pipe pile is provided with the threads, so that the contact area of the concrete pipe pile with a rock-soil body and a high-pressure jet grouting pile can be increased, and the bearing capacity of the combined pile is improved; high pressure jet grouting pile includes that one section or multistage high pressure jet grouting pile constitutes, according to the characteristic of foundation soil layer, in silt, hard soil intermediate layer such as silt, set up high pressure jet grouting pile with high pressure jet grouting technology, when there is the better soil layer of multilayer nature in the long within range of stake, do not set up high pressure jet grouting pile, make full use of foundation soil layer's characteristic, both satisfied the designing requirement, practice thrift raw and other materials and engineering time again, reduce construction cost by a wide margin, be fixed with the stake point in the one end of core stake, make the core stake faster, more accurate insert in the high pressure jet grouting pile body.
Drawings
Fig. 1 is a schematic structural view of embodiment 1 of the present invention.
Fig. 2 is a schematic structural diagram of embodiment 2 of the present invention.
Fig. 3 is a top view of fig. 1.
Fig. 4 is a schematic structural view of a prestressed reinforcement according to the present invention.
FIG. 5 is a schematic view of an anchor according to the present invention.
FIG. 6 is a schematic view of a circular weld plate configuration of the present invention.
Detailed Description
Example 1
As shown in the figure, the high-pressure jet grouting core-inserted composite pile comprises a core pile 1 and a high-pressure jet grouting pile 2, wherein the periphery of the outer wall of the core pile 1 is provided with threads 3, the bottom of the core pile 1 is provided with a conical pile tip 5, the high-pressure jet grouting pile 2 is arranged on the outer side of the core pile 1 in a segmented manner, in the embodiment, the high-pressure jet grouting pile is uniformly arranged along the core pile in segments, the pile diameter of the high-pressure jet grouting pile 2 is 600-1000mm, the pile length is 20-40m, the grouting slurry is cement slurry, the cement mark number is not lower than 42.5 grade, one or more of fly ash, an early strength admixture and an accelerating agent can be added into the cement slurry, the construction method of the high-pressure jet grouting pile adopts a double-pipe method or a three-pipe method, the core pile 1 is a hollow precast pile, eight prestressed reinforcements 6 are uniformly arranged in the core pile 1 along the periphery, a plurality of stirrups 7 are welded in the longitudinal direction of the prestressed reinforcements 6, and the stirrups 7 are longitudinally distributed along the prestressed reinforcements 6, the two ends of the prestressed reinforcement 6 are respectively provided with an anchorage device 8, the anchorage device 8 is disc-shaped, the circumference of the anchorage device 8 is provided with a hole for the prestressed reinforcement 6 to penetrate through, a circular welding plate 4 is further arranged between the anchorage device 8 and the conical pile tip 5, eight welding holes are formed in the circular welding plate 4, the size of each welding hole is matched with the size of the cross section of the prestressed reinforcement 6, the circular welding plate 4 is fixed at one end of the prestressed reinforcement through a welding mode, the thread 3 is an anticlockwise rotating thread, the thread width is 10-30cm, the thickness is 4-6cm, the thread interval is 50-80cm, the pile length of each core pile is 20-40m, the outer diameter of each core pile is 600-800mm, and the wall thickness is 150-300 mm.
Example 2
Example 2 differs from example 1 in that: in this embodiment, the high-pressure jet grouting pile is arranged close to the upper part of the core pile, as shown in fig. 2.
Through the mode of centrifugal casting, pour core pile 1 to prestressing steel 6 on, and core pile 1 is hollow setting, has pour screw thread 3 at the outer wall of core pile 1, and this screw thread 3's width is 10cm, and thickness is 5cm, and the pitch is 50 cm. The contact area of a core pile 1, a rock-soil body and a high-pressure jet grouting pile 2 is increased, the bearing capacity of a high-pressure jet grouting core combined pile is increased, a pile tip 5 is welded on a circular welding plate 4 at one end of the core pile 1, during construction, high-pressure cement slurry is sprayed out from a nozzle through a drill rod and is sprayed while rotating, a section or a section is selected to manufacture a cement pile according to the characteristics of a foundation soil layer, then a prestressed concrete pipe pile prefabricated by a factory is transported to the site, the pile tip is aligned to the center of the high-pressure jet grouting pile, and the core pile is inserted into a pile body by a pile feeder to form the high-jet grouting core combined pile.
Claims (6)
1. The utility model provides a high lock pin composite pile that spouts which characterized in that: spout the stake soon including core pile and high pressure, core pile outer wall circumference is equipped with the screw thread, and the core pile bottom is equipped with toper stake point, the high pressure spouts the stake soon and is the segmentation form and sets up in the core pile outside, the core pile is hollow precast pile, evenly is equipped with eight prestressing steel along the circumference in the core pile, has a plurality of stirrups along the vertical welding of prestressing steel, the prestressing steel both ends are equipped with an anchorage device respectively.
2. The high-pressure jet insertion core combined pile as claimed in claim 1, characterized in that: the anchorage device is disc-shaped, and holes for the prestressed reinforcements to penetrate through are formed in the circumference of the anchorage device.
3. The high-pressure jet insertion core combined pile as claimed in claim 2, characterized in that: and a circular welding plate is arranged between the anchorage device and the conical pile tip, eight welding holes are formed in the circular welding plate, and the size of each welding hole is matched with that of the section of the prestressed reinforcement.
4. The high-pressure jet insertion core combined pile as claimed in claim 3, characterized in that: the pile diameter of the high-pressure jet grouting pile is 600-1000mm, and the pile length is 20-40 m.
5. The high-pressure jet insertion core combined pile as claimed in claim 4, characterized in that: the threads are anticlockwise rotated threads, the width of the threads is 10-30cm, the thickness of the threads is 4-6cm, and the distance between the threads is 50-80 cm.
6. The high-pressure jet insert core combined pile according to claim 5, characterized in that: the pile length of each core pile section is 20-40m, the outer diameter of the core pile section is 600-800mm, and the wall thickness is 150-300 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120912954.5U CN216973387U (en) | 2021-04-29 | 2021-04-29 | High-pressure jet inserting core combined pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120912954.5U CN216973387U (en) | 2021-04-29 | 2021-04-29 | High-pressure jet inserting core combined pile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216973387U true CN216973387U (en) | 2022-07-15 |
Family
ID=82337423
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120912954.5U Expired - Fee Related CN216973387U (en) | 2021-04-29 | 2021-04-29 | High-pressure jet inserting core combined pile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216973387U (en) |
-
2021
- 2021-04-29 CN CN202120912954.5U patent/CN216973387U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220715 |