CN220789737U - Drilling implantation major diameter high strength prestressed pipe pile structure - Google Patents
Drilling implantation major diameter high strength prestressed pipe pile structure Download PDFInfo
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- CN220789737U CN220789737U CN202321981560.0U CN202321981560U CN220789737U CN 220789737 U CN220789737 U CN 220789737U CN 202321981560 U CN202321981560 U CN 202321981560U CN 220789737 U CN220789737 U CN 220789737U
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- pile
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- pipe pile
- hole
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- 238000005553 drilling Methods 0.000 title claims abstract description 19
- 238000002513 implantation Methods 0.000 title abstract description 5
- 239000004567 concrete Substances 0.000 claims description 16
- 230000003014 reinforcing effect Effects 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 239000007943 implant Substances 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 12
- 239000002689 soil Substances 0.000 abstract description 11
- 239000013049 sediment Substances 0.000 abstract description 10
- 238000000034 method Methods 0.000 abstract description 8
- 230000002787 reinforcement Effects 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 5
- 239000002002 slurry Substances 0.000 abstract description 5
- 239000010410 layer Substances 0.000 description 34
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 4
- 239000012792 core layer Substances 0.000 description 4
- 230000000979 retarding effect Effects 0.000 description 3
- 239000004575 stone Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000004570 mortar (masonry) Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000009435 building construction Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011178 precast concrete Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Abstract
The utility model discloses a drilling implantation large-diameter high-strength prestressed pipe pile structure, which comprises a pile sinking layer, a pipe pile and a core filling layer, wherein the pile sinking layer is arranged on the pipe pile; the pile sinking layer is arranged at the bottom of the drilling guide hole; the tubular pile is vertically arranged in the drilling guide hole, and the bottom end of the tubular pile is immersed in the pile sinking layer; the core filling layer is arranged at the top of the pipe pile and is used for plugging and fixing the pipe pile. According to the utility model, PHC800AB pipe piles are used for replacing bored pile reinforcement cages, and are pressed to a designed elevation at one time; the pile head can squeeze the slurry at the bottom of the hole, the pile bottom has no sediment, and the problems of serious influence on the quality of the pile foundation, such as hole collapse, diameter shrinkage, deflection of the pile hole, larger sediment thickness at the bottom of the hole and the like, are solved in the construction process in a thick backfill layer with poor soil property. Meanwhile, the problem of pile end sediment is solved, and the influence of hole wall collapse on pile body quality is reduced. In addition, the PHC800AB pipe pile is pressed in, so that the soil squeezing effect in the precast pile construction process can be solved, and the quality accidents such as pile breaking, necking and the like of the cast-in-place pile are reduced.
Description
Technical Field
The utility model relates to the field of building construction, in particular to a large-diameter high-strength prestressed pipe pile structure implanted in a drill hole.
Background
The bored pile is widely applied to house construction engineering and municipal engineering, has the characteristics of being capable of constructing piles with diameters much larger than those of prefabricated piles and being applicable to various foundations. Because concrete is poured in muddy water, the quality of the concrete is difficult to control, and particularly in a thick backfill layer with poor soil quality, the problems of serious influence on the quality of a pile foundation, such as hole collapse, diameter shrinkage, deflection of a pile hole, larger thickness of sediment at the bottom of the hole and the like, are easy to occur in the construction process.
The high-strength prestressed pipe pile has the advantages of low production cost, small reinforcement ratio, steel conservation, environment-friendly hollow pile, small diameter, large specific surface area, large bearing capacity of single concrete, simple construction and low technical difficulty. Disadvantages: the soil squeezing effect of the precast pile is negative in saturated cohesive soil, and can cause mass accidents such as pile breaking, necking and the like of the cast-in-place pile, and pile body floating can be caused for the soil squeezing precast concrete pile and the steel pile, so that the bearing capacity is reduced, and the sedimentation is increased; soil compaction effect can also cause damage to surrounding houses and municipal facilities.
Disclosure of Invention
The utility model aims to provide a structure for drilling and implanting a large-diameter high-strength prestressed pipe pile so as to improve the quality of a pile foundation and reduce quality accidents such as pile breaking, necking and the like of a cast-in-place pile.
The utility model is realized in the following way:
a drilling implantation large-diameter high-strength prestressed pipe pile structure comprises a pile sinking layer, a pipe pile and a core filling layer;
the pile sinking layer is arranged at the bottom of the drilling guide hole;
the tubular pile is vertically arranged in the drilling guide hole, and the bottom end of the tubular pile is immersed in the pile sinking layer;
the core filling layer is arranged at the top of the pipe pile and is used for plugging and fixing the pipe pile.
Further, the pile sinking layer is poured by adopting 50% of C20 concrete and 50% of 8-hour delayed coagulation fine stone concrete.
Further, 50% of M20 and 50% of 8-hour retarding mortar are adopted for the pile sinking layer.
Furthermore, PHC800AB pipe piles are adopted as the pipe piles.
Furthermore, the tubular piles are pressed into the drilling guide holes layer by layer, and two adjacent tubular piles are welded and connected.
Further, the core filling layer comprises a reinforcing mesh layer and a concrete layer, and the reinforcing mesh layer is positioned inside the concrete layer.
Further, the reinforcing mesh layer is anchored with bearing platform reinforcing steel bars, and bearing platform reinforcing steel bars are externally poured with bearing platforms.
Compared with the prior art, the utility model has at least the following beneficial effects:
according to the utility model, PHC800AB pipe piles are used for replacing bored pile reinforcement cages, and are pressed to a designed elevation at one time; the pile head can squeeze the slurry at the bottom of the hole, the pile bottom has no sediment, and the problems of serious influence on the quality of the pile foundation, such as hole collapse, diameter shrinkage, deflection of the pile hole, larger sediment thickness at the bottom of the hole and the like, are solved in the construction process in a thick backfill layer with poor soil property. Meanwhile, the problem of pile end sediment is solved, and the influence of hole wall collapse on pile body quality is reduced.
Meanwhile, the PHC800AB pipe pile is pressed in, so that the soil squeezing effect in the precast pile construction process can be solved, and quality accidents such as pile breaking and necking of the cast-in-place pile are reduced.
Drawings
Fig. 1 is a schematic diagram of the overall structure of the large-diameter high-strength prestressed pipe pile structure implanted by drilling.
In the figure, 1, a steel bar truss; 2. a flat iron; 3. a wood form; 4. supporting the straight ribs; 5. a fixing hole; 6. a connecting bolt; 7. a lower nut; 8. a top nut; 9. a steel gasket.
Detailed Description
The utility model will be further described with reference to the drawings and the specific examples.
Referring to fig. 1, the utility model discloses a drilling implantation large-diameter high-strength prestressed pipe pile structure, which comprises a pile sinking layer 1, a pipe pile 2 and a core filling layer 3.
Specifically, pile sinking layer 1 sets up in drilling and draws the hole bottom, tubular pile 2 vertical setting is in the drilling draws the hole, just tubular pile 2 bottom is immersed pile sinking layer 1 is interior, irritate core layer 3 setting and be in tubular pile 2 top, just it is used for shutoff and is fixed to irritate core layer 3 tubular pile 2.
During construction, firstly, paying off and positioning are carried out, a rotary drilling machine drills a hole, and the aperture is 1200mm. Then, the pile sinking layer 1 is formed by clearing holes, placing the guide pipes and pouring underwater concrete. The pile sinking layer can be poured by adopting 50% of C20 concrete and 50% of 8-hour retarding fine stone concrete, or by adopting 50% of M20 and 50% of 8-hour retarding mortar. And then, using 8-15m long pipe piles to replace pile reinforcement cages, extruding hole bottom slurry to press the hole bottom slurry to a designed elevation bearing layer, using a pipe pressing machine to press PHC800 (130) AB pipe piles into the retarder fine stone concrete in the holes, manually performing butt welding construction of pipe pile joints, and continuously pressing down the pipe piles to the designed elevation after the joints are constructed. And finally, pouring a core filling layer 3 at the top of the pipe pile 2 to finish the whole construction process.
Further, the core filling layer 3 comprises a reinforcing mesh layer 4 and a concrete layer 5, and the reinforcing mesh layer 4 is positioned inside the concrete layer 5.
Specifically, when pouring the core layer 3, firstly fixing the reinforcement cage (namely the reinforcement mesh layer 4) at the top of the pipe pile 2, and then pouring concrete outside the reinforcement mesh layer 4 to form the core layer 3.
In a specific embodiment, the reinforcing mesh layer 4 is anchored with the bearing platform reinforcing steel bar 6, and the bearing platform 7 is poured outside the bearing platform reinforcing steel bar 6, so that the firmness of the bearing platform 7 can be greatly improved.
Compared with the prior art, the utility model has at least the following beneficial effects:
according to the utility model, PHC800AB pipe piles are used for replacing bored pile reinforcement cages, and are pressed to a designed elevation at one time; the pile head can squeeze the slurry at the bottom of the hole, the pile bottom has no sediment, and the problems of serious influence on the quality of the pile foundation, such as hole collapse, diameter shrinkage, deflection of the pile hole, larger sediment thickness at the bottom of the hole and the like, are solved in the construction process in a thick backfill layer with poor soil property. Meanwhile, the problem of pile end sediment is solved, and the influence of hole wall collapse on pile body quality is reduced.
Meanwhile, the PHC800AB pipe pile is pressed in, so that the soil squeezing effect in the precast pile construction process can be solved, and quality accidents such as pile breaking and necking of the cast-in-place pile are reduced.
The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model, therefore, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present utility model should be included in the scope of the present utility model.
Claims (5)
1. The utility model provides a drilling implants major diameter high strength prestressing force tubular pile structure which characterized in that: comprises a pile sinking layer (1), a tubular pile (2) and a core filling layer (3);
the pile sinking layer (1) is arranged at the bottom of the drilling guide hole;
the tubular pile (2) is vertically arranged in the drilling guide hole, and the bottom end of the tubular pile (2) is immersed in the pile sinking layer (1);
the filling layer (3) is arranged at the top of the pipe pile (2), and the filling layer (3) is used for plugging and fixing the pipe pile (2).
2. The drill implanted large diameter high strength prestressed pipe pile structure of claim 1, wherein: the pipe pile (2) is a PHC800AB pipe pile.
3. The drill implanted large diameter high strength prestressed pipe pile structure of claim 1, wherein: the pipe piles (2) are pressed into the drilling guide holes layer by layer, and two adjacent pipe piles (2) are connected in a welded mode.
4. The drill implanted large diameter high strength prestressed pipe pile structure of claim 1, wherein: the filling layer (3) comprises a reinforcing mesh layer (4) and a concrete layer (5), and the reinforcing mesh layer (4) is positioned inside the concrete layer (5).
5. The drill implanted large diameter high strength prestressed pipe pile structure of claim 4, wherein: the steel bar mesh layer (4) is anchored with a bearing platform steel bar (6), and a bearing platform (7) is poured outside the bearing platform steel bar (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321981560.0U CN220789737U (en) | 2023-07-26 | 2023-07-26 | Drilling implantation major diameter high strength prestressed pipe pile structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321981560.0U CN220789737U (en) | 2023-07-26 | 2023-07-26 | Drilling implantation major diameter high strength prestressed pipe pile structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220789737U true CN220789737U (en) | 2024-04-16 |
Family
ID=90655383
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321981560.0U Active CN220789737U (en) | 2023-07-26 | 2023-07-26 | Drilling implantation major diameter high strength prestressed pipe pile structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220789737U (en) |
-
2023
- 2023-07-26 CN CN202321981560.0U patent/CN220789737U/en active Active
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