CN108035339B - Open tubular pile with irregular inner wall and preparation method thereof - Google Patents
Open tubular pile with irregular inner wall and preparation method thereof Download PDFInfo
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- CN108035339B CN108035339B CN201711405930.5A CN201711405930A CN108035339B CN 108035339 B CN108035339 B CN 108035339B CN 201711405930 A CN201711405930 A CN 201711405930A CN 108035339 B CN108035339 B CN 108035339B
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- 230000001788 irregular Effects 0.000 title claims abstract description 22
- 238000002360 preparation method Methods 0.000 title abstract description 8
- 230000002787 reinforcement Effects 0.000 claims abstract description 43
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 17
- 239000010959 steel Substances 0.000 claims abstract description 17
- 239000002689 soil Substances 0.000 claims description 39
- 238000007789 sealing Methods 0.000 claims description 6
- 238000005516 engineering process Methods 0.000 claims description 4
- 239000011229 interlayer Substances 0.000 claims description 2
- 238000009435 building construction Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000010276 construction Methods 0.000 description 29
- 230000000694 effects Effects 0.000 description 10
- 238000000034 method Methods 0.000 description 5
- 230000000903 blocking effect Effects 0.000 description 4
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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
- E02D5/30—Prefabricated piles made of concrete or reinforced concrete or made of steel and concrete
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B21/00—Methods or machines specially adapted for the production of tubular articles
- B28B21/56—Methods or machines specially adapted for the production of tubular articles incorporating reinforcements or inserts
- B28B21/68—Methods or machines specially adapted for the production of tubular articles incorporating reinforcements or inserts and applying centrifugal forces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B21/00—Methods or machines specially adapted for the production of tubular articles
- B28B21/76—Moulds
- B28B21/82—Moulds built-up from several parts; Multiple moulds; Moulds with adjustable parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B21/00—Methods or machines specially adapted for the production of tubular articles
- B28B21/86—Cores
-
- 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
-
- 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
- E02D5/58—Prestressed concrete piles
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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)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention belongs to the technical field of building construction components, and relates to an irregular open tubular pile with inner walls and a preparation method thereof, wherein the irregular open tubular pile is used in foundation engineering, the inside of the irregular open tubular pile is of a hollow structure, the outer diameter is the same, the inner diameter is different, a prestressed reinforcement cage is arranged in the open tubular pile, the prestressed reinforcement cage of a reticular structure consists of steel caps, prestressed reinforcements and reinforcement meshes, the steel caps of a circular groove type structure are arranged at two ends of the prestressed reinforcements, the circular groove type of the steel caps are arranged inwards, the prestressed reinforcements are arranged in an arc shape, and the reinforcement meshes surround the outer sides of the prestressed reinforcements; the novel structure is novel, stable and firm, the strength of the pipe pile is improved, the pipe pile is easier to put into the ground and is not easy to damage, the device used during preparation is simple in structure and easy to operate, the strength of the pipe pile is increased, the thickness of the inner wall of the pipe pile can be controlled, cracks or gaps inside the pipe pile are avoided, and the production quality is improved.
Description
Technical field:
the invention belongs to the technical field of building construction components, and relates to an irregular inner wall open tubular pile used in foundation engineering and a preparation method thereof.
The background technology is as follows:
the tubular pile has the advantages of high bearing capacity, good stability, limited soil extrusion, quick construction and the like, is widely applied to port engineering, road engineering and bridge engineering, and plays a great role. Statistics of the national statistical office in 2014 indicate that the use of the pipe pile is up to 200 hundred million meters. The open tubular pile is characterized in that in the process that the pile body penetrates into foundation soil or seabed, part of soil body is extruded into a pile hole to form a soil plug, so that the vertical compression bearing capacity of the tubular pile not only comprises the friction resistance of the inner side and the outer side of the pile and the pile end resistance, but also comprises the bearing capacity of the soil plug. The formation of the soil plug also has a great influence on the load transfer of the pile outer wall and the pile side soil. The pile reduces the foundation resistance of construction and the construction load in the construction process, so that the construction can be performed by smaller machinery, pile sinking is easy, the soil squeezing effect is reduced, and the construction period is also greatly shortened.
However, in the current research of improving the bearing capacity of the tubular pile and accelerating pile sinking, the pile end resistance and the pile peripheral surface resistance are mostly considered, but the research on the soil plug is very little, the pile front end resistance becomes longer along with the pile length, the soil body enters the tubular pile, the friction force between the inner peripheral surface of the tubular pile and the foundation is increased, and finally the condition that the soil body is blocked on the inner wall of the tubular pile is possibly achieved. Most of the existing open tubular piles have the same inner diameters at two ends and the same wall thickness, the formation form of the soil plug is single, and different geological conditions cannot be applied. Therefore, it is necessary to invent a novel open tubular pile for improving the path formed by the soil plug, so as to intensively study the influence of the soil plug on the tubular pile in the pile sinking process.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and seeks to provide an irregular open tubular pile with inner walls, which is capable of inhibiting blocking and facilitating pile sinking in tubular pile construction so as to reduce construction load, reduce soil squeezing effect or facilitate blocking and improve bearing capacity, and a preparation method thereof.
In order to achieve the above purpose, the irregular open tubular pile with the inner wall is a cylindrical standard tubular pile, the inside of the standard tubular pile is of a hollow structure, the outer diameter is the same, the inner diameter is different, the concrete structure comprises an end A, an end B and a prestressed reinforcement cage, wherein the end A is one end of the wall thickness of the standard tubular pile, the end B is one end of the thin wall of the standard tubular pile, the construction load is reduced, the pile sinking is easy, the soil squeezing effect is reduced in order to inhibit the blocking of the front end of the pile in the construction process of the tubular pile, and the open tubular pile with the lower end being the upper end of the end A and the upper end of the end B is adopted for pile sinking; in order to improve the bearing capacity of the tubular pile, an open tubular pile with the lower end being the end B and the upper end being the end A is adopted for pile sinking, and different forms are selected under different geological conditions, so that the tubular pile can play a larger role; the wall thickness of the end A is 80-140mm, the wall thickness of the end B is 40-60mm, the length of the open tubular pile is 6-15m, and the taper formed by the inner wall of the open tubular pile is 1.2:100-3.3:100, wherein a prestressed reinforcement cage is arranged in the open tubular pile, and the prestressed reinforcement cage is made of C40-C60 concrete or steel sheet piles; the prestress reinforcement cage of the net-shaped structure consists of steel caps, prestress reinforcement and reinforcement nets, wherein the steel caps of the round groove-shaped structure are arranged at two ends of the prestress reinforcement, the round grooves of the steel caps are arranged inwards, the prestress reinforcement is arranged in an arc shape, and the reinforcement nets obliquely encircle the outer sides of the prestress reinforcement.
When the pipe pile with the irregular inner wall opening is prepared, the prestressed reinforcement cage is placed into the existing concrete pipe pile mould, and is formed by movement through the existing high-speed centrifugal technology, and the concrete throwing amount of the A, B end of the pipe pile is controlled to be 1:2-1:2.5, the part between the A end and the B end is evenly increased to put in the amount, if the A end is put in the amount and then the B end is put in the amount and is 2, the middle part is evenly increased from 1 to 2, the open pipe pile is made to form the pipe pile with different upper and lower wall thicknesses, or a novel concrete pipe pile mould is adopted to prepare the pipe pile, the novel concrete pipe pile mould comprises a pipe pile core, a mould and a vibration table, the mould is formed into a pipe body structure by combining two semicircular pipes, one end of the mould is open, one end of the mould is sealed, the pipe pile core is of a columnar structure with different upper and lower end diameters, the cylindrical surface of the pipe pile core is provided with threads, the opening of the pipe pile core extends into and is rotationally fixed on the sealing surface of the mould along the axis of the mould, the vibration table is of a circular pipe structure, the vibration table corresponds to the size of the mould and is fixedly sleeved at the sealing end position of the mould, the opening end of the mould is vertically arranged on an externally connected rotary platform, concrete is injected from the upper end, and the vibration table and the rotary platform is started until the pipe pile is formed.
According to the invention, the tubular pile with the lower end being the A end and the upper end being the B end is adopted, when the tubular pile is constructed, soil body enters the tubular pile, and the soil plug formed just at the lower end is loosened because the inner diameter of the lower end is smaller than that of the upper end, so that the inner resistance of the tubular pile is obviously reduced, and no matter how the pile is driven by static pressure, hammering and vibration, the foundation resistance in construction can be reduced, so that the construction load is reduced, the pile is easy to drive and the soil squeezing effect is reduced, and therefore, the construction can be carried out by smaller construction machinery, the construction period is greatly shortened, and the construction cost is reduced; the pipe pile with the lower end being in the form of the end B and the upper end being in the form of the end A is adopted, and as the inner diameter of the lower end of the pipe pile is larger than that of the upper end, the compression of soil body can be accelerated along with the soil body entering the pipe pile, a soil plug can be formed rapidly, the bearing capacity can be improved greatly, the pipe pile in the form completely accords with the stress characteristic of the pipe pile, the material of the pipe pile and the size and the number of the pipe pile in construction can be reduced, and the construction cost is reduced.
Compared with the prior art, the novel device has the advantages that the structure is novel, the prestress reinforcement cage is adopted to enable the structure to be stable and firm, the strength of the pipe pile is improved, the pipe pile is easier to put into the ground and is not easy to damage, the novel device is simple in structure and easy to operate when in preparation, the strength of the pipe pile is improved, the thickness of the inner wall of the pipe pile can be better controlled, cracks or gaps in the pipe pile are avoided, and the quality of the produced pipe pile is improved.
Description of the drawings:
fig. 1 is a cross-sectional view of a main body structure of a pipe pile with irregular inner walls according to the present invention.
Fig. 2 is a cross section of an end a of the pipe pile with irregular inner wall according to the present invention.
Fig. 3 is a cross section of a B-end of the pipe pile with irregular inner wall according to the present invention.
Fig. 4 is a diagram of the structure of the mesh-type prestressed reinforcement cage according to the present invention.
FIG. 5 is a diagram of the novel concrete pipe pile module structure according to the invention.
The specific embodiment is as follows:
the invention is further illustrated by the following examples in conjunction with the accompanying drawings.
Examples:
the tubular pile with the irregular inner wall is a reference tubular pile in a cylindrical shape, the inside of the tubular pile is of a hollow structure, the outer diameter is the same, the inner diameter is different, the concrete structure comprises an end A1, an end B3 and a prestressed reinforcement cage 2, wherein the end A is one end of the wall thickness of the reference tubular pile, the end B is one end of the wall thickness of the reference tubular pile, the construction load is reduced, pile sinking is easy, the soil squeezing effect is reduced in order to inhibit the blocking of the front end of the tubular pile in the construction process, and the pile sinking is carried out by adopting the open tubular pile with the lower end being the upper end of the end A and the upper end of the end B; in order to improve the bearing capacity of the tubular pile, an open tubular pile with the lower end being the end B and the upper end being the end A is adopted for pile sinking, and different forms are selected under different geological conditions, so that the tubular pile can play a larger role; the wall thickness of the end A is 80-140mm, the wall thickness of the end B is 40-60mm, the length of the open tubular pile is 6-15m, and the taper formed by the inner wall of the open tubular pile is 1.2:100-3.3:100, wherein a prestressed reinforcement cage 2 is arranged in the open tubular pile, and the prestressed reinforcement cage 2 is made of C40-C60 concrete or steel sheet piles; the prestress reinforcement cage 2 of the net-shaped structure consists of steel caps 4, prestress reinforcement 5 and reinforcement nets 6, wherein the steel caps 4 of the round groove-shaped structure are arranged at two ends of the prestress reinforcement 5, the round grooves of the steel caps 4 are arranged inwards, the prestress reinforcement 5 is arranged in an arc shape, and the reinforcement nets 6 obliquely encircle the outer sides of the prestress reinforcement 5.
When the pipe pile with the irregular inner wall opening is manufactured, the prestressed reinforcement cage 2 is placed into an existing concrete pipe pile die, and is formed by moving through an existing high-speed centrifugal technology, and the concrete throwing amount of the A, B end of the pipe pile is controlled to be 1:2-1:2.5, the part between the A end and the B end is evenly increased and put in the amount, if the A end is put in the amount and then the B end is put in the amount and is 2, the middle part is evenly increased from 1 to 2, the open pipe pile is made to form a pipe pile with different upper and lower wall thicknesses, or a novel concrete pipe pile mould is adopted to prepare the pipe pile, the novel concrete pipe pile mould comprises a pipe pile core 7, a mould 8 and a vibration platform 9, the mould 8 is formed into a pipe body structure by combining two semicircular pipes, one end of the mould 8 is open, one end of the mould 8 is sealed, the pipe pile core 7 is of a columnar structure with different diameters at the upper and lower ends, the cylindrical surface of the pipe pile core 7 is provided with threads, the opening of the pipe pile core 7 extends into and is rotationally fixed on the sealing surface of the mould body along the axis of the mould 8, the vibration platform 9 is of a circular pipe-shaped structure, the vibration platform 9 corresponds to the size of the mould 8 and is fixedly sleeved at the sealing end position of the mould body, the opening end of the mould 8 is vertically arranged on an externally connected rotary platform, concrete is injected from the upper end, and the vibration platform 9 and the rotary platform is started until the pipe pile is formed.
According to the embodiment, the tubular pile with the lower end being the A end and the upper end being the B end is adopted, when the tubular pile is constructed, soil body enters the tubular pile, the soil plug formed just at the lower end is loosened due to the fact that the inner diameter of the lower end is smaller than that of the upper end, so that the inner resistance of the tubular pile is obviously reduced, and no matter how the pile is driven by static pressure, hammering and vibration, the foundation resistance in construction can be reduced, so that the construction load is reduced, pile driving is easy, the soil squeezing effect is reduced, and therefore, the construction can be carried out by smaller construction machinery, the construction period is greatly shortened, and the construction cost is reduced; the pipe pile with the lower end being in the form of the end B and the upper end being in the form of the end A is adopted, and as the inner diameter of the lower end of the pipe pile is larger than that of the upper end, the compression of soil body can be accelerated along with the soil body entering the pipe pile, a soil plug can be formed rapidly, the bearing capacity can be improved greatly, the pipe pile in the form completely accords with the stress characteristic of the pipe pile, the material of the pipe pile and the size and the number of the pipe pile in construction can be reduced, and the construction cost is reduced.
The tubular pile of this embodiment can carry out steady transition and replacement with current production line, product and operational equipment, the environment of waiting internal diameter tubular pile, and the preparation application of being convenient for, this embodiment is with prestressing force framework of steel, and the prestressing force framework of steel thickness is inconsistent about setting up, and the quantity at both ends is properly changed when pouring concrete, prepares into the irregular open tubular pile of inner wall.
In this embodiment, the upper end and the lower end of the inner wall irregular open tubular pile are arranged to be of a linear structure or are arranged to be of a ladder shape according to actual needs so as to change the forming path of the soil plug, thereby greatly affecting the bearing capacity performance, pile sinking effect, soil squeezing effect and the like of the tubular pile.
The lower end of the inner wall irregular open tubular pile is the end A, and the upper end of the inner wall irregular open tubular pile is the end B, so that the inner wall irregular open tubular pile is suitable for being used in the working condition of sandy soil or foundation conditions with interlayers and the like, pile sinking is easy, the soil squeezing effect is reduced, along with the increase of the soil mass entering the tubular pile, the soil squeezing effect around the tubular pile is reduced, the influence on surrounding buildings is greatly reduced, the construction is facilitated, and the damage caused by uneven settlement of foundation such as inclination, collapse and the like on the surrounding buildings is reduced; when the lower end of the pipe pile with the irregular inner wall opening is in the form of the end B and the upper end of the pipe pile is in the form of the end A, the characteristics of the pipe pile that the stress is big and small are completely met, the pipe pile is mostly used in a soft soil foundation, the soil plug can be formed by accelerating compression, and the bearing capacity of the pipe pile is greatly improved.
Claims (1)
1. The tubular pile comprises an A end, a B end and a prestress reinforcement cage, wherein the A end is one end of the wall thickness of the reference tubular pile, the B end is one end of the thin wall of the reference tubular pile, and the lower end of the tubular pile is the upper end of the A end, so that the tubular pile is suitable for the working condition of sandy soil or foundation with an interlayer under complex conditions when the lower end of the tubular pile is the upper end of the B end; when the lower end of the pipe pile with the irregular inner wall opening is in the form of the B end and the upper end of the pipe pile is in the form of the A end, the pipe pile is suitable for soft soil foundations; the wall thickness of the end A is 80-140mm, the wall thickness of the end B is 40-60mm, the length of the open tubular pile is 6-15m, and the taper formed by the inner wall of the open tubular pile is 1.2:100-3.3:100, wherein a prestressed reinforcement cage is arranged in the open tubular pile, and the prestressed reinforcement cage is made of C40-C60 concrete or steel sheet piles; the prestress reinforcement cage of the net-shaped structure consists of steel caps, prestress reinforcement and reinforcement nets, wherein the steel caps of the round groove-shaped structure are arranged at two ends of the prestress reinforcement, the round grooves of the steel caps are arranged inwards, the prestress reinforcement is arranged in an arc shape, and the reinforcement nets obliquely encircle the outer sides of the prestress reinforcement;
when the pipe pile with the irregular opening on the inner wall is prepared, the prestressed reinforcement cage is placed into the existing concrete pipe pile mould, and is formed by moving through the existing high-speed centrifugal technology, and the concrete throwing amount of the A, B end of the pipe pile is controlled to be 1:2-1:2.5, evenly increasing the throwing amount of the part between the end A and the end B, enabling the open pipe pile to form the pipe pile with different upper and lower wall thicknesses, or adopting a novel concrete pipe pile die to prepare the pipe pile, wherein the novel concrete pipe pile die comprises a pipe pile core, a die and a vibration platform, the die is formed into a pipe body structure by combining two semicircular pipes, one end of the die is open, one end of the die is sealed, the pipe pile core is of a columnar structure with different diameters at the upper end and the lower end, the cylindrical surface of the pipe pile core is provided with threads, the opening of the pipe pile core extends into and is rotationally fixed on the sealing surface of the die body along the axis of the die, the vibration platform is of a circular pipe structure, the vibration platform corresponds to the size of the die and is fixedly sleeved at the sealing end position of the die, the opening end of the die is vertically installed upwards on an externally connected rotary platform, and concrete is injected from the upper end of the die, and the vibration platform and the rotary platform are started until the pipe pile is formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711405930.5A CN108035339B (en) | 2017-12-22 | 2017-12-22 | Open tubular pile with irregular inner wall and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711405930.5A CN108035339B (en) | 2017-12-22 | 2017-12-22 | Open tubular pile with irregular inner wall and preparation method thereof |
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| Publication Number | Publication Date |
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| CN108035339A CN108035339A (en) | 2018-05-15 |
| CN108035339B true CN108035339B (en) | 2023-12-22 |
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| CN201711405930.5A Active CN108035339B (en) | 2017-12-22 | 2017-12-22 | Open tubular pile with irregular inner wall and preparation method thereof |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109115545B (en) * | 2018-08-03 | 2021-04-02 | 邹城兖矿泰德工贸有限公司 | Geological casing |
| CN114855769A (en) * | 2022-06-09 | 2022-08-05 | 山西八建集团有限公司 | Rotary assembly type foundation treatment steel pipe pile and construction method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202850019U (en) * | 2012-09-13 | 2013-04-03 | 安徽国仓管桩集团有限公司 | Bar-mat reinforcement type tubular pile skeleton structure |
| JP2014005710A (en) * | 2012-06-27 | 2014-01-16 | Nippon Concrete Ind Co Ltd | Precast concrete pile |
| CN104264659A (en) * | 2014-10-15 | 2015-01-07 | 金陵科技学院 | Prefabricated hollow uplift pile and preparation method thereof |
-
2017
- 2017-12-22 CN CN201711405930.5A patent/CN108035339B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014005710A (en) * | 2012-06-27 | 2014-01-16 | Nippon Concrete Ind Co Ltd | Precast concrete pile |
| CN202850019U (en) * | 2012-09-13 | 2013-04-03 | 安徽国仓管桩集团有限公司 | Bar-mat reinforcement type tubular pile skeleton structure |
| CN104264659A (en) * | 2014-10-15 | 2015-01-07 | 金陵科技学院 | Prefabricated hollow uplift pile and preparation method thereof |
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| CN108035339A (en) | 2018-05-15 |
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