CN110984148A - Reinforced concrete precast pile forming system and construction method - Google Patents
Reinforced concrete precast pile forming system and construction method Download PDFInfo
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- CN110984148A CN110984148A CN201911347203.7A CN201911347203A CN110984148A CN 110984148 A CN110984148 A CN 110984148A CN 201911347203 A CN201911347203 A CN 201911347203A CN 110984148 A CN110984148 A CN 110984148A
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- 239000011150 reinforced concrete Substances 0.000 title claims abstract description 74
- 238000010276 construction Methods 0.000 title claims abstract description 18
- 239000002689 soil Substances 0.000 claims abstract description 29
- 230000007246 mechanism Effects 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims description 9
- 238000005553 drilling Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 238000010008 shearing Methods 0.000 abstract 1
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
- E02D7/26—Placing by using several means simultaneously
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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
- E02D5/30—Prefabricated piles made of concrete or reinforced concrete or made of steel and concrete
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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
- E02D5/48—Piles varying in construction along their length, i.e. along the body between head and shoe, e.g. made of different materials along their length
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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
- E02D5/22—Piles
- E02D5/56—Screw piles
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
- E02D7/22—Placing by screwing down
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Piles And Underground Anchors (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Abstract
The invention provides a reinforced concrete precast pile forming system and a construction method. A reinforced concrete precast pile forming system comprises a pile hammer, a power head and a reinforced concrete pile, wherein the pile hammer is provided with the upper end of a pile driver to form a vertical pile driving mechanism, and can be contacted with the upper end of the reinforced concrete pile; the power head is arranged on the pile driving platform and located below the vertical pile driving mechanism, a lifting cylinder is arranged between the power head and the pile driving platform, a hydraulic tightening device is arranged in the power head, the hydraulic tightening device can clamp the reinforced concrete pile, and the power head drives the reinforced concrete pile to rotate and move up and down simultaneously. The invention has the advantages that: the outer surface of the pile is designed into a screw rod shape, and the pile is rotationally sunk into the soil according to the screw thread shape, so that the pile and the soil body are completely combined and consistent, the original soil is not damaged, the friction stress between the periphery of the pile and the soil body is changed into the shearing stress of the soil body, and the friction force around the pile is improved by geometric multiples.
Description
Technical Field
The invention relates to a precast pile and a construction method, in particular to a reinforced concrete precast pile forming system and a construction method, and belongs to the technical field of house building engineering and municipal infrastructure engineering.
Background
The existing construction method of the precast pile mainly comprises a static pile driver pressing-in method, a diesel hammer or hydraulic hammer driving-in method and a vibration hammer vibration pile sinking method. The construction method has the advantages of high construction speed and reliable construction quality, but in the pile sinking process, the combination of the soil around the pile and the soil body is poor due to the soil squeezing effect, and the friction force of the soil around the pile cannot be effectively utilized due to the fact that the pile body is very smooth.
The prefabricated pile called a bamboo joint pile is available in the market, the outer wall of the pile is provided with joints, and the joints are used for increasing the friction force around the pile.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a reinforced concrete precast pile forming system and a construction method.
In order to achieve the purpose, the invention is realized by the following technical scheme:
a reinforced concrete precast pile forming system comprises a pile hammer, a power head and a reinforced concrete pile, wherein the pile hammer is provided with the upper end of a pile driver to form a vertical pile driving mechanism, and can be contacted with the upper end of the reinforced concrete pile; the power head is arranged on the pile driving platform and located below the vertical pile driving mechanism, a lifting cylinder is arranged between the power head and the pile driving platform, the power head is hollow and is provided with a hydraulic tightening device, the hydraulic tightening device can clamp the reinforced concrete pile, and the power head drives the reinforced concrete pile to rotate and move up and down.
On the basis of the above reinforced concrete precast pile forming system, the reinforced concrete pile comprises an upper pile body part and a lower pile body part, the outer diameters of the upper pile body part and the lower pile body part are the same, the upper pile body part is of a cylindrical structure, the outer wall of the lower pile body part is of a spiral structure, the lower end of the lower pile body part is a pile tip, and the upper pile body part and the lower pile body part are connected into a whole in a clamping mode through a convex-concave structure.
On the basis of the reinforced concrete precast pile forming system, the lower end of the upper pile body part is provided with a plurality of bulges at intervals, and a concave structure is formed between the bulges; the upper end of the lower pile body part is provided with a plurality of grooves at intervals, and the shapes and the sizes of the grooves correspond to those of the bulges.
On the basis of the reinforced concrete precast pile forming system, the lower end of the upper pile body part extends downwards along the axial direction to form a convex part and is in a curve shape when viewed from the longitudinal direction, and the upper end of the lower pile body part extends upwards along the axial direction to form a concave part from the outer wall to the center and is in a curve shape when viewed from the longitudinal direction.
On the basis of the reinforced concrete precast pile forming system, the upper pile body part and the lower pile body part are of solid or hollow structures.
A construction method of a reinforced concrete precast pile comprises the following steps:
(1) manufacturing the reinforced concrete precast pile into a screw rod shape;
(2) the pile driver is provided with a power head, the upper part of the pile driver is provided with a pile hammer, the lower part of the pile driver is provided with the power head, the power head is a hollow mechanism, a hydraulic tightening device is arranged in the power head, and the power head is connected with a pile driver platform through a lifting cylinder;
(3) the pile driver is in place, the pile driving hammer is lifted to a certain height, the power head is lowered to the lowest position, and the hydraulic tightening device is loosened;
(4) positioning a prefabricated reinforced concrete pile in place from the hollow position of the power head, and lowering a pile driving hammer to connect the upper end of the reinforced concrete pile;
(5) starting a pile driving hammer to drive the reinforced concrete pile into a first preset depth, stopping the pile driving hammer to lift the pile driving hammer to be separated from the reinforced concrete pile, driving a power head to rise to an upper limit position under the driving of a lifting cylinder, and operating a hydraulic enclasping device to enclasping the reinforced concrete pile;
(6) starting the power head to drive the reinforced concrete pile to rotate downwards and forwards, ensuring that the power head rotates for a circle and moves for a pitch until the power head reaches the lower limit position, and stopping the power head;
(7) loosening the power head of the hydraulic tightening device to rise to the upper limit position, tightly holding the reinforced concrete pile again by the hydraulic tightening device, enabling the reinforced concrete pile to be rotationally pressed into the soil body, and repeatedly operating until the reinforced concrete pile reaches the final soil layer depth, forcibly screwing the threaded pile body at the lower part into the soil body, drilling the soil body into a thread shape, and enabling the pile body to be tightly combined with the soil body;
(8) and moving the pile driver to the next pile position, and repeating the procedures for construction.
On the basis of the construction method of the reinforced concrete precast pile, the pile driver is of a three-pivot walking type or a three-pivot crawler type.
The invention has the advantages that: the pile driving hammer strikes the vertical pile sinking method, the power head adopts the rotary pile sinking method, the pile driving hammer and the power head adopt the relay mode to do work, the outer surface of the reinforced concrete pile is designed into a screw rod shape, the pile is rotationally sunk into the soil according to the screw thread shape, so that the pile is completely combined with the soil body, the original soil is not damaged, the friction stress of the periphery of the pile and the soil body is changed into the shear stress of the soil body, and the friction force of the periphery of the pile is improved by geometric multiple.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.
Fig. 1 is a schematic structural view of a reinforced concrete precast pile forming system according to an embodiment of the present invention.
FIG. 2 is a schematic top view of a convex-concave structure according to an embodiment of the present invention.
Fig. 3 is a front view schematically illustrating a convex-concave structure according to an embodiment of the present invention.
Fig. 4 is a schematic view of a convex-concave structure according to another embodiment of the present invention.
In the figure, 1, a pile driving hammer, 2, a pile driving platform, 3, a hydraulic tightening device, 4, a power head, 5, a lifting cylinder, 6, a reinforced concrete pile, 61, an upper pile body part, 62, a lower pile body part, 63, a pile tip, 7, a pile driver, 8, a protrusion, 9, a protrusion and 10, a recess are arranged.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate directions
The positional or positional relationships are based on the orientation or positional relationships shown in the drawings and are merely for convenience in describing the invention and for simplicity in description
Rather than indicating or implying that the device or element so referred to must have a particular orientation, be constructed and arranged in a particular orientation
Operation, and therefore, should not be construed as limiting the invention.
A reinforced concrete precast pile forming system comprises a pile hammer 2, a power head 4 and a reinforced concrete pile 6, wherein the pile hammer 2 is provided with the upper end of a pile driver to form a vertical pile driving mechanism, and the pile hammer 2 can be contacted with the upper end of the reinforced concrete pile 6; the power head 4 is arranged on the pile driving platform 2 and located below the vertical pile driving mechanism, a lifting cylinder 5 is arranged between the power head 4 and the pile driving platform, the power head 4 is hollow and is provided with a hydraulic tightening device 3, the hydraulic tightening device 3 can clamp a reinforced concrete pile 6, and the power head drives the reinforced concrete pile to rotate and move up and down simultaneously.
In this embodiment, the reinforced concrete pile 6 includes an upper pile body 61 and a lower pile body 62, the outer diameters of the upper pile body 61 and the lower pile body 62 are the same, the upper pile body 61 is of a cylindrical structure, the outer wall of the lower pile body 62 is of a spiral structure, the lower end of the lower pile body 62 is a pile tip 63, and the upper pile body 61 and the lower pile body 62 are clamped and connected into a whole through a convex-concave structure.
In this embodiment, the following structure may be adopted with reference to the convex-concave structure shown in fig. 2 and 3: a plurality of bulges 8 are arranged at the lower end of the upper pile body part 61 at intervals, and a concave structure is formed among the bulges; the upper end of the lower pile body 62 is provided with a plurality of grooves at intervals, and the shape and size of the grooves correspond to those of the protrusions. The concave-convex structure in this embodiment may also adopt the following structure: the lower end of the upper pile portion 61 extends downward in the axial direction to form a convex portion 9 and is curved as viewed in the longitudinal direction, and the upper end of the lower pile portion 62 is formed with a concave portion 10 in the axial direction from the outer wall to the center and is curved as viewed in the longitudinal direction.
In this embodiment, the upper pile portion 61 and the lower pile portion 62 are solid or hollow.
A construction method of a reinforced concrete precast pile comprises the following steps:
(1) manufacturing the reinforced concrete precast pile into a screw rod shape;
(2) the pile driver 7 is provided with a power head 4, the upper part of the pile driver is provided with a pile hammer 2, the lower part of the pile driver is provided with the power head 4, the power head 4 is a hollow mechanism, the interior of the power head is provided with a hydraulic tightening device 3, and the power head is connected with a pile driver platform through a lifting cylinder 5;
(3) the pile driver is in place, the pile hammer 2 is lifted to a certain height, the power head is lowered to the lowest position, and the hydraulic tightening device 3 is loosened;
(4) placing a prefabricated reinforced concrete pile 6 in place from the hollow position of the power head, and lowering the pile hammer 2 to be connected with the upper end of the reinforced concrete pile 6;
(5) the pile driving hammer 2 is started to drive the reinforced concrete pile 6 into a first preset depth, the pile driving hammer 2 stops working, the pile driving hammer is lifted to be separated from the reinforced concrete pile 6, the power head is driven by the lifting cylinder to rise to the upper limit position, and the hydraulic tightener 3 is operated to tightly hold the reinforced concrete pile 6;
(6) starting the power head to drive the reinforced concrete pile 6 to rotate downwards and forwards, ensuring that the power head rotates by one circle and moves by one pitch until the power head reaches the lower limit position, and stopping the power head;
(7) loosening the power head of the hydraulic tightening device 3, lifting to the upper limit position, tightly holding the reinforced concrete pile 6 again by the hydraulic tightening device 3, enabling the reinforced concrete pile 6 to be rotationally pressed into the soil body, repeatedly operating until the reinforced concrete pile 6 reaches the final soil layer depth, forcibly screwing the threaded pile body at the lower part into the soil body, drilling the soil body into a thread shape, and enabling the pile body to be tightly combined with the soil body;
(8) and moving the pile driver to the next pile position, and repeating the procedures for construction.
In this embodiment, the pile driver is a three-pivot walking type or a three-pivot crawler type.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The utility model provides a reinforced concrete precast pile forming system which characterized in that: the pile driving device comprises a pile driving hammer, a power head and a reinforced concrete pile, wherein the pile driving hammer is provided with the upper end of a pile driver to form a vertical pile driving mechanism and can be contacted with the upper end of the reinforced concrete pile; the power head is arranged on the pile driving platform and located below the vertical pile driving mechanism, a lifting cylinder is arranged between the power head and the pile driving platform, the power head is hollow and is provided with a hydraulic tightening device, the hydraulic tightening device can clamp the reinforced concrete pile, and the power head drives the reinforced concrete pile to rotate and move up and down.
2. The system of claim 1, wherein the reinforced concrete pile comprises an upper pile body and a lower pile body, the upper pile body and the lower pile body have the same outer diameter, the upper pile body is of a cylindrical structure, the outer wall of the lower pile body is of a spiral structure, the lower end of the lower pile body is a pile tip, and the upper pile body and the lower pile body are integrally clamped by a convex-concave structure.
3. The reinforced concrete precast pile forming system according to claim 2, wherein: a plurality of bulges are arranged at the lower end of the upper pile body part at intervals, and a sunken structure is formed between the bulges; the upper end of the lower pile body part is provided with a plurality of grooves at intervals, and the shapes and the sizes of the grooves correspond to those of the bulges.
4. The reinforced concrete precast pile forming system according to claim 2, wherein: the lower end of the upper pile body part extends downwards along the shaft to form a convex part and is in a curve shape when viewed from the longitudinal direction, and the upper end of the lower pile body part is formed with a concave part from the outer wall to the center in the axial direction and is in a curve shape when viewed from the longitudinal direction.
5. The reinforced concrete precast pile forming system according to any one of claims 1 to 4, wherein: the power head is a rotary driver, and the power is a hydraulic motor or a positive and negative rotation motor.
6. The reinforced concrete precast pile forming system according to any one of claims 1 to 4, wherein: the upper pile body part and the lower pile body part are of solid or hollow structures.
7. A construction method of a reinforced concrete precast pile is characterized by comprising the following steps:
(1) manufacturing the reinforced concrete precast pile into a screw rod shape;
(2) the pile driver is provided with a power head, the upper part of the pile driver is provided with a pile hammer, the lower part of the pile driver is provided with the power head, the power head is a hollow mechanism, a hydraulic tightening device is arranged in the power head, and the power head is connected with a pile driver platform through a lifting cylinder;
(3) the pile driver is in place, the pile driving hammer is lifted to a certain height, meanwhile, the power head is lowered to the lowest position by using the lifting cylinder, and the hydraulic tightening device is loosened;
(4) positioning a prefabricated reinforced concrete pile in place from the hollow position of the power head, and lowering a pile driving hammer to connect the upper end of the reinforced concrete pile;
(5) starting a pile driving hammer to drive the reinforced concrete pile into a first preset depth, stopping the pile driving hammer to lift the pile driving hammer to be separated from the reinforced concrete pile, driving a power head to rise to an upper limit position under the driving of a lifting cylinder, and operating a hydraulic enclasping device to enclasping the reinforced concrete pile;
(6) starting the power head to drive the reinforced concrete pile to rotate downwards and forwards, ensuring that the power head rotates for a circle and moves for a pitch until the power head reaches the lower limit position, and stopping the power head;
(7) loosening the power head of the hydraulic tightening device to rise to the upper limit position, tightly holding the reinforced concrete pile again by the hydraulic tightening device, enabling the reinforced concrete pile to be rotationally pressed into the soil body, and repeatedly operating until the reinforced concrete pile reaches the final soil layer depth, forcibly screwing the threaded pile body at the lower part into the soil body, drilling the soil body into a thread shape, and enabling the pile body to be tightly combined with the soil body;
(8) and moving the pile driver to the next pile position, and repeating the procedures for construction.
8. The construction method of the reinforced concrete precast pile as recited in claim 7, wherein: the pile driver is of a three-pivot walking type or a three-pivot crawler type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911347203.7A CN110984148A (en) | 2019-12-24 | 2019-12-24 | Reinforced concrete precast pile forming system and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911347203.7A CN110984148A (en) | 2019-12-24 | 2019-12-24 | Reinforced concrete precast pile forming system and construction method |
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| Publication Number | Publication Date |
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| CN110984148A true CN110984148A (en) | 2020-04-10 |
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| CN201911347203.7A Withdrawn CN110984148A (en) | 2019-12-24 | 2019-12-24 | Reinforced concrete precast pile forming system and construction method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4310258A1 (en) * | 2022-07-18 | 2024-01-24 | Pier Tech Systems LLC | Foundation support systems, assemblies and methods including sleeve coupler and shafts with torque transmitting profiled distal end edges |
-
2019
- 2019-12-24 CN CN201911347203.7A patent/CN110984148A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4310258A1 (en) * | 2022-07-18 | 2024-01-24 | Pier Tech Systems LLC | Foundation support systems, assemblies and methods including sleeve coupler and shafts with torque transmitting profiled distal end edges |
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Application publication date: 20200410 |