CN114411700A - Steel pile body for steel pipe grouting pile construction while sinking pipe and grouting - Google Patents
Steel pile body for steel pipe grouting pile construction while sinking pipe and grouting Download PDFInfo
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- CN114411700A CN114411700A CN202210036550.3A CN202210036550A CN114411700A CN 114411700 A CN114411700 A CN 114411700A CN 202210036550 A CN202210036550 A CN 202210036550A CN 114411700 A CN114411700 A CN 114411700A
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- pile
- steel pipe
- steel
- pipe
- grouting
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 133
- 239000010959 steel Substances 0.000 title claims abstract description 133
- 238000010276 construction Methods 0.000 title claims abstract description 28
- 239000011083 cement mortar Substances 0.000 claims abstract description 24
- 239000011440 grout Substances 0.000 claims abstract description 20
- 238000007569 slipcasting Methods 0.000 claims abstract description 18
- 239000002689 soil Substances 0.000 claims abstract description 17
- 239000011148 porous material Substances 0.000 claims abstract description 4
- 210000001503 joint Anatomy 0.000 claims description 5
- 238000003825 pressing Methods 0.000 claims description 4
- 150000001875 compounds Chemical class 0.000 claims description 3
- 239000002131 composite material Substances 0.000 abstract description 2
- 230000003014 reinforcing effect Effects 0.000 abstract 1
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000000243 solution Substances 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
- E02D5/28—Prefabricated piles made of steel or other metals
- E02D5/285—Prefabricated piles made of steel or other metals tubular, e.g. prefabricated from sheet pile elements
-
- 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
-
- 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
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
- E02D5/38—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds
-
- 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
- E02D5/62—Compacting the soil at the footing or in or along a casing by forcing cement or like material through tubes
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0004—Synthetics
- E02D2300/0018—Cement used as binder
- E02D2300/002—Concrete
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0026—Metals
- E02D2300/0029—Steel; Iron
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- Piles And Underground Anchors (AREA)
Abstract
A steel pile body for steel pipe grouting pile construction while sinking a pipe and grouting comprises a steel pipe and a pile cap, wherein the pile cap is fixedly arranged at the top of the steel pipe, so that the pile sinking under pressure is facilitated; the conical pile tip is arranged at the bottom of the steel pipe and used for breaking a soil body; the blind plate is arranged between the conical pile tip and the steel pipe, the blind plate and the steel pipe are concentrically arranged, the diameter of the blind plate is larger than that of the steel pipe, and a foundation hole larger than that of the steel pipe is formed as the steel pile body sinks into a foundation soil body; go out grout hole and slip casting hole, be close to blind plate department and be equipped with the side direction and go out the grout hole bottom the steel pipe, be equipped with the slip casting hole in steel pipe upper portion pile cap department, in limit immersed tube limit slip casting construction, cement mortar is poured into by the slip casting hole, flows toward the steel pipe outside from going out grout hole department for the clearance between quick filling steel pipe and the foundation hole pore wall effectively prevents that the loose space that falls into of soil around the stake. Thereby forming a composite pile body with the steel cylinder uniformly wrapped with the cement mortar reinforcing layer.
Description
Technical Field
The invention relates to the technical field of pipe pile construction, in particular to a steel pile body for steel pipe grouting pile construction, which can sink a pipe and perform grouting at the same time.
Background
With the acceleration of the urbanization process, the construction projects in China are increased in a large area, and because the construction use area is limited, a plurality of projects need to be constructed in a place with narrow space and complex geological structure. The large-diameter pile is difficult to meet the construction conditions, and the small-diameter pile is difficult to meet the bearing capacity requirement of the upper structure. At present, a steel pipe pile is used, a geological drilling machine is used for forming a hole, the steel pipe is arranged in the hole, cement mortar is injected from the bottom of the pile foundation by a grouting pipe, and the cement mortar returns to the upper part from the inside and the outside of the steel pipe to form a steel pipe cement mortar pile body. Because the hole is formed in advance and then grouting is carried out, the peripheral soil body is easy to slip into the hole during grouting, and the pile forming is not facilitated.
Disclosure of Invention
The invention aims to solve the technical problem of the prior art and provides a steel pile body for steel pipe grouting pile construction, which improves the compression resistance and the pulling resistance bearing capacity and is capable of sinking a pipe and grouting at the same time.
The invention aims to solve the technical problem by adopting the following technical scheme, and the steel pile body for steel pipe grouting pile construction while sinking a pipe and grouting comprises a steel pipe and is characterized in that:
the pile cap is fixedly arranged at the top of the steel pipe, so that the pile can be conveniently pressed and sunk;
the conical pile tip is arranged at the bottom of the steel pipe and used for breaking a soil body;
the blind plate is arranged between the conical pile tip and the steel pipe, the blind plate and the steel pipe are concentrically arranged, the diameter of the blind plate is larger than that of the steel pipe, and a foundation hole larger than that of the steel pipe is formed as the steel pile body sinks into a foundation soil body;
go out grout hole and slip casting hole, be equipped with the side direction and go out the grout hole near blind plate department in the steel pipe bottom, be equipped with the slip casting hole in steel pipe upper portion pile cap department, in limit immersed tube limit slip casting construction, cement mortar is poured into by the slip casting hole, flows out toward the steel pipe outside from the play grout hole for the clearance between steel pipe and the foundation hole pore wall is filled fast, thereby forms the inside and outside compound pile body of evenly wrapping up cement mortar back up coat of steel cylinder.
The technical problem to be solved by the invention can be further realized by the following technical scheme that the diameter of the blind plate is 50-200 mm larger than that of the steel pipe.
The technical problem to be solved by the invention can be further realized by the following technical scheme that two slurry outlet holes are symmetrically arranged at two sides of the steel pipe.
The technical problem to be solved by the invention can be further realized by the following technical scheme that the slurry outlet hole is arranged at a position 50mm away from the blind plate.
The technical problem to be solved by the invention can be further realized by the following technical scheme that a circle of coaming is arranged around the grout outlet hole, the coaming is downwards fixedly connected with the blind plate, and the diameter of the outer wall of the coaming is smaller than or equal to that of the blind plate.
The technical problem to be solved by the invention can be further realized by the following technical scheme that the pile cap comprises a cover body arranged at the top of the pile, the top of the cover body is provided with a platform for pressing and sinking the pile, the lower opening of the cover body is sleeved on the pile body, the lower opening of the cover body is provided with a force-bearing inner edge which protrudes inwards, and the force-bearing inner edge is pressed on the top of the pile.
The technical problem to be solved by the invention can be further realized by the following technical scheme that a fastening hoop sleeved on the pile body is arranged below the cover body, and the fastening hoop is upwards connected with the cover body into a whole in a rigid manner.
The technical problem to be solved by the invention can be further realized by the following technical scheme that the pile splicing device is arranged and comprises a pile splicing sleeve, the pile splicing sleeve is fixedly connected to the bottom opening of the upper section of steel pipe, the lower part of the pile splicing sleeve is sleeved on the lower section of steel pipe, a protruding locking pin is arranged on the pipe wall of the lower section of steel pipe, a locking groove matched with the locking pin is formed in the pile splicing sleeve, and the butt joint end faces of the upper section of steel pipe and the lower section of steel pipe are tightly connected through the matching of the locking pin and the locking groove.
Compared with the prior art, the invention has the following advantages:
(1) the pile sinking and grouting construction can be carried out simultaneously, and the concrete around the pile has good integrity;
(2) the steel pipe pile is assembled in an assembly mode, so that the steel pipe pile is convenient to install and short in construction period;
(3) the processing cost of the tubular pile part is low, and the construction cost can be well controlled;
(4) the pile sinking machine is matched with different pile sinking machines, so that the pile sinking machine can adapt to the limitation of different site heights and has wide application range;
(5) the sizes of the pile body and the pile shoe can be flexibly adjusted according to requirements, and different bearing capacity requirements can be met.
The diameter of a blind plate for connecting a pile body and a pile tip at the lower part of a steel pipe is larger than that of a pile body of the steel pipe pile, and a foundation hole with the diameter larger than that of the steel pipe is formed in a soil body in the pile sinking process; when the steel pipe is sunk, cement mortar is synchronously injected, so that a gap formed by the sunk pile body and surrounding soil can be timely filled, and the soil around the pile is effectively prevented from loosening and falling into the gap. The invention can mix cement mortar with peripheral soil body to form a hard block with larger volume, and forms a composite pile body with the steel pipe pile, thereby greatly improving the compression resistance and the pulling resistance bearing capacity of the steel pipe pile.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a connection structure of a pile tip blind plate and a coaming;
FIG. 3 is a schematic structural view of a pile cap;
FIG. 4 is a cross-sectional view of the pile cap;
FIG. 5 is a block diagram of the connecting sleeve;
FIG. 6 is a schematic diagram of pile formation by pipe sinking and grouting.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, and in order to make those skilled in the art understand the present invention further, the embodiments of the present invention will be described in detail and fully with reference to the accompanying drawings. 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.
A steel pile body for steel pipe grouting pile construction while sinking a pipe and grouting comprises a steel pipe 6, a pile cap 3, a conical pile tip 1 and a blind plate 8,
the pile cap is fixedly arranged at the top of the steel pipe, so that the pile can be conveniently pressed and sunk;
the conical pile tip is arranged at the bottom of the steel pipe and used for breaking a soil body;
the blind plate is arranged between the conical pile tip and the steel pipe, the blind plate and the steel pipe are concentrically arranged, the diameter of the blind plate is larger than that of the steel pipe, and a foundation hole 4 larger than that of the steel pipe is formed as the steel pile body sinks into a foundation soil body;
go out grout hole 5 and slip casting hole 2, be equipped with the side direction and go out the grout hole near blind plate department in the steel pipe bottom, be equipped with the slip casting hole in steel pipe upper portion pile cap department, in limit immersed tube limit slip casting construction, cement mortar is poured into by the slip casting hole, flows out toward the steel pipe outside from going out grout hole department for fill the clearance between steel pipe and the foundation hole pore wall fast, thereby form the inside and outside compound pile body of evenly wrapping up the cement mortar back up coat of steel cylinder.
The diameter of the blind plate is 50mm-200mm larger than that of the steel pipe.
The grout outlet holes are two and are symmetrically arranged on two sides of the steel pipe.
The grout outlet is arranged at a position 50mm away from the blind plate.
A circle of coaming 7 is arranged around the grout outlet, the coaming is downwards fixedly connected with the blind plate, and the diameter of the outer wall of the coaming is smaller than or equal to that of the blind plate.
The pile cap comprises a cover body arranged at the top of the pile, the top of the cover body is provided with a platform for pressing and sinking the pile, the lower opening of the cover body is sleeved on the pile body, a bearing inner edge 10 protruding inwards is arranged at the lower opening of the cover body, and the bearing inner edge is pressed on the pile top.
The lower part of the cover body is provided with a fastening hoop 9 which is sleeved on the pile body, and the fastening hoop is upwards connected with the cover body into a whole in a rigid way.
Be provided with pile extension device, pile extension device is including pile extension sleeve 11, and pile extension sleeve fixed connection is in the end opening department of upper segment steel pipe, and pile extension sleeve lower part cup joints under on the section steel pipe, is equipped with bellied locking round pin 13 on the pipe wall of section steel pipe down, and it has locking round pin complex locking groove 12 to open on the pile extension sleeve, closely meets through the butt joint terminal surface of locking round pin and locking groove cooperation two sections steel pipes from top to bottom.
The pile sinking steps are as follows:
(1) sinking the conical pile tip part into a foundation soil body, and connecting a grouting hole with a grouting machine through a grouting pipe;
(2) applying pressure to the pile cap part through equipment, performing pipe sinking operation, and injecting cement mortar into the steel pipe pile through a grouting opening by a grouting machine while sinking the steel pile body;
(3) as the steel pile body sinks into the foundation soil body, a foundation hole 4 larger than the diameter of the steel pipe is formed because the diameter of the blind plate is larger than the diameter of the steel pipe;
along with the increase of the injection amount of cement mortar in the steel pipe, the cement mortar flows out from the grout outlet to the outside of the steel pipe so as to quickly fill a gap between the steel pipe and the wall of the foundation hole;
(4) grouting while sinking the pipe, controlling the injection amount and the injection speed of cement mortar, matching with the sinking pipe speed, and keeping filling the foundation hole without overflowing;
(5) and (4) sinking the pipe to the designed elevation depth to ensure that the inside and the outside of the steel pipe are filled with cement mortar slurry, the steel pipe is uniformly wrapped by the cement mortar, and grouting is finished.
The cement mortar is uniformly coated inside and outside, so that the support and protection can be provided for the steel pipe pile body, and the durability and stability of the pile are improved; the pile tip with the enlarged diameter and the blind plate sink to form a gap, so that the pile body of the steel pipe pile is enlarged, good friction force of soil around the pile is provided, and the bearing capacity of the pile is effectively improved. After the cement mortar is wrapped, the outer side of the steel pipe forms an even and continuous outer wall, so that the durability of the steel pipe is improved, and meanwhile, effective support is provided for the bearing capacity of the pile.
The steel pipe grouting pile mainly comprises a steel pipe and cement mortar inside and outside the steel pipe, the cement mortar and the steel pipe play a role together after being condensed, the bearing capacity of the pile body is improved, meanwhile, the cement mortar can also protect the steel pipe from being corroded by the surrounding environment, and the service life of the steel pipe is prolonged. The pile has the advantages of small pile diameter, strong penetrating power, high bearing capacity of cross section per unit area, convenient construction and the like, and can be well balanced in both construction and bearing capacity.
Claims (8)
1. The utility model provides a steel pile body is used in steel pipe slip casting pile construction of limit immersed tube limit slip casting, includes the steel pipe, its characterized in that:
the pile cap is fixedly arranged at the top of the steel pipe, so that the pile can be conveniently pressed and sunk;
the conical pile tip is arranged at the bottom of the steel pipe and used for breaking a soil body;
the blind plate is arranged between the conical pile tip and the steel pipe, the blind plate and the steel pipe are concentrically arranged, the diameter of the blind plate is larger than that of the steel pipe, and a foundation hole larger than that of the steel pipe is formed as the steel pile body sinks into a foundation soil body;
go out grout hole and slip casting hole, be equipped with the side direction and go out the grout hole near blind plate department in the steel pipe bottom, be equipped with the slip casting hole in steel pipe upper portion pile cap department, in limit immersed tube limit slip casting construction, cement mortar is poured into by the slip casting hole, flows out toward the steel pipe outside from the play grout hole for the clearance between steel pipe and the foundation hole pore wall is filled fast, thereby forms the inside and outside compound pile body of evenly wrapping up cement mortar back up coat of steel cylinder.
2. The steel pile body for the construction of the steel pipe grouting pile while sinking the pipe and grouting according to claim 1, which is characterized in that: the diameter of the blind plate is 50mm-200mm larger than that of the steel pipe.
3. The steel pile body for the construction of the steel pipe grouting pile while sinking the pipe and grouting according to claim 1, which is characterized in that: the grout outlet holes are two and are symmetrically arranged on two sides of the steel pipe.
4. The steel pile body for the construction of the steel pipe grouting pile while sinking the pipe and grouting according to claim 1, which is characterized in that: the grout outlet is arranged at a position 50mm away from the blind plate.
5. The steel pile body for the construction of the steel pipe grouting pile while sinking the pipe and grouting according to claim 1, which is characterized in that: a circle of coaming is arranged around the grout outlet hole, the coaming is downwards fixedly connected with the blind plate, and the diameter of the outer wall of the coaming is smaller than or equal to that of the blind plate.
6. The steel pile body for the construction of the steel pipe grouting pile while sinking the pipe and grouting according to claim 1, which is characterized in that: the pile cap comprises a cover body arranged at the top of the pile, the top of the cover body is provided with a platform for pressing and sinking the pile, the lower opening of the cover body is sleeved on the pile body, the lower opening of the cover body is provided with a bearing inner edge which protrudes inwards, and the bearing inner edge is pressed on the pile top.
7. The steel pile body for the construction of the steel pipe grouting pile with the pipe sinking and grouting functions as claimed in claim 6, wherein: the lower part of the cover body is provided with a fastening hoop sleeved on the pile body, and the fastening hoop is upwards connected with the cover body into a whole in a rigid way.
8. The steel pile body for the construction of the steel pipe grouting pile while sinking the pipe and grouting according to claim 1, which is characterized in that: be provided with pile extension device, pile extension device is including pile extension sleeve, and pile extension sleeve fixed connection is in the end opening department of upper segment steel pipe, and pile extension sleeve lower part cup joints under on the section steel pipe, is equipped with bellied locking round pin on the pipe wall of section steel pipe down, and it has the locking groove with locking round pin complex to open on pile extension sleeve, closely meets through locking round pin and locking groove cooperation with the butt joint terminal surface of two sections steel pipes from top to bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210036550.3A CN114411700A (en) | 2022-01-13 | 2022-01-13 | Steel pile body for steel pipe grouting pile construction while sinking pipe and grouting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210036550.3A CN114411700A (en) | 2022-01-13 | 2022-01-13 | Steel pile body for steel pipe grouting pile construction while sinking pipe and grouting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114411700A true CN114411700A (en) | 2022-04-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210036550.3A Pending CN114411700A (en) | 2022-01-13 | 2022-01-13 | Steel pile body for steel pipe grouting pile construction while sinking pipe and grouting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114411700A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115030213A (en) * | 2022-05-26 | 2022-09-09 | 上海勘测设计研究院有限公司 | Tool suitable for offshore wind power foundation pile and application method |
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2022
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| CN101532290A (en) * | 2009-02-25 | 2009-09-16 | 河海大学 | Granule grouting pile of ripple plastic sleeve with hole for strengthening soft soil foundation and strengthening method |
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| Title |
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| 刘正峰: "地基与基础工程新技术实用手册", 31 December 2000, 海潮出版社, pages: 1759 - 1760 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115030213A (en) * | 2022-05-26 | 2022-09-09 | 上海勘测设计研究院有限公司 | Tool suitable for offshore wind power foundation pile and application method |
| CN115030213B (en) * | 2022-05-26 | 2023-04-11 | 上海勘测设计研究院有限公司 | Tool suitable for offshore wind power foundation pile and application method |
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