CN114922189A - Novel construction method for secondary core-filling and slurry leakage prevention of prestressed hollow square pile - Google Patents
Novel construction method for secondary core-filling and slurry leakage prevention of prestressed hollow square pile Download PDFInfo
- Publication number
- CN114922189A CN114922189A CN202210702818.2A CN202210702818A CN114922189A CN 114922189 A CN114922189 A CN 114922189A CN 202210702818 A CN202210702818 A CN 202210702818A CN 114922189 A CN114922189 A CN 114922189A
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- Prior art keywords
- square pile
- prestressed
- hollow square
- pile
- prestressed hollow
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- 238000010276 construction Methods 0.000 title claims abstract description 21
- 239000002002 slurry Substances 0.000 title claims abstract description 16
- 230000002265 prevention Effects 0.000 title claims abstract description 7
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 37
- 239000010959 steel Substances 0.000 claims abstract description 37
- 230000000149 penetrating effect Effects 0.000 claims abstract description 4
- 230000002787 reinforcement Effects 0.000 claims description 19
- 210000002435 tendon Anatomy 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 238000003466 welding Methods 0.000 claims description 2
- 230000009471 action Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 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
- 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
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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
- E02D5/34—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
- E02D5/58—Prestressed concrete piles
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- 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
The invention discloses a novel construction method for secondary core filling and slurry leakage prevention of a prestressed hollow square pile, and belongs to the technical field of square pile construction. The prestressed hollow square pile comprises a pile hoop, prestressed ribs, an end plate and a nut structure, wherein a steel bar framework used for secondary core filling comprises four prestressed ribs or non-prestressed ribs, stirrups wound beside four main ribs and cylindrical steel screw trays, a central through hole penetrating through the whole prestressed hollow square pile is formed in the center of the prestressed hollow square pile along the length direction of the prestressed hollow square pile, the steel bar framework bottom tray for secondary core filling is made of steel cylindrical screws, and the nut structure and the screw trays can be effectively fastened, so that the aim of effectively preventing slurry leakage can be fulfilled. The invention not only effectively improves the quality of the secondary core-filling concrete, but also forms a measure for preventing slurry leakage to a certain extent, thereby further improving the construction quality of the prestressed hollow square pile.
Description
Technical Field
The invention relates to the technical field of square pile construction, in particular to a novel secondary core-filling and slurry leakage preventing construction method for a prestressed hollow square pile.
Background
With the development of society and the continuous progress of building industry, the prestressed hollow square pile has the advantages of high bearing capacity, high construction speed, safe carrying and stacking, reliable construction quality, no mud retaining wall during construction, no noise pollution by static pressure method and the like, but has some problems along with a plurality of advantages. Such as: in the secondary core filling process of the novel prestressed hollow square pile, because a gap exists between the steel circular tray and the inner wall of the hollow square pile, the concrete leakage phenomenon occurs, the core filling depth of the hollow square pile cannot meet the standard requirement, and the construction quality of secondary core filling is seriously influenced.
Disclosure of Invention
The invention aims to provide a novel construction method for preventing slurry leakage of a prestressed hollow square pile through secondary core filling, which is simple and convenient to operate and can effectively solve the problem of slurry leakage of concrete, so that the construction quality of the prestressed hollow square pile through secondary core filling can be improved, and the problems in the background art are solved.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a novel hollow square pile of prestressing force secondary is irritated core and is prevented leaking construction method of thick liquid, hollow square pile of prestressing force includes stake cuff, prestressing tendons, end board and nut structure, comprises a plurality of prestressing tendons and the spiral that extend along hollow square pile length direction around the other stirrup two parts of prestressing tendons in the stake cuff, adopts following step:
the method comprises the following steps: a central through hole penetrating through the whole prestressed hollow square pile is formed in the center of the prestressed hollow square pile along the length direction of the prestressed hollow square pile, and the cross section of the periphery of the prestressed hollow square pile is square;
step two: blanking and manufacturing according to the manufacturing process of the prestressed hollow square pile, mounting a steel nut structure at a position 1800mm away from the end part of the square pile in the through hole, welding the nut and the prestressed main rib, and enabling the inner wall of the mounted nut to protrude 8mm more than the inner wall of the pile hole;
step three: the steel reinforcement framework used for secondary core filling consists of four prestressed tendons or non-prestressed tendons, stirrups wound beside the four main tendons and a cylindrical steel screw tray, wherein the steel tray is welded with the main tendons, and the stirrups are wound on the main tendons;
step four: putting the manufactured steel reinforcement framework into the hollow square pile, and rotating the steel reinforcement framework to enable the screw tray below the steel reinforcement framework to be fastened with the nut structure in the square pile to form a whole;
step five: after the operation is finished, the grouting can be directly carried out.
Furthermore, the steel tray is composed of a cylinder which is 100mm high, 10mm thick, 8mm smaller than the pile hole in radius and provided with screw threads.
Further, the nut structure is made of formed steel having a length of 300 mm.
Compared with the prior art, the invention has the following beneficial effects:
the method is simple and convenient to operate, and can effectively solve the problem of concrete leakage, so that the construction quality of secondary core filling of the prestressed hollow square pile can be improved; when the steel bar framework is filled in the pile body, the nut structure in the pile body and the cylindrical screw tray at the lower part of the steel bar framework can be fastened and connected into a whole, so that the aim of effectively preventing slurry leakage can be fulfilled.
Drawings
FIG. 1 is a drawing of a prestressed hollow square pile with a nut structure according to the present invention;
FIG. 2 is a diagram of a steel reinforcement cage used in the secondary core filling of the present invention;
fig. 3 is a schematic view of the installation of the hollow square pile and the steel reinforcement cage according to the present invention.
In the figure: 1. a thread; 2. the inner wall of the screw cap; 3. a steel pallet; 4. threading; 5. a main rib; 6. and (5) hooping.
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 obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Referring to fig. 1-3, a novel construction method for secondary core-filling and slurry leakage prevention of a prestressed hollow square pile comprises a pile hoop, prestressed ribs, an end plate and a nut structure, wherein the pile hoop comprises a plurality of prestressed ribs extending along the length direction of the hollow square pile and stirrups spirally surrounding the prestressed ribs, and the method comprises the following steps:
the method comprises the following steps: a central through hole penetrating through the whole prestressed hollow square pile is formed in the center of the prestressed hollow square pile along the length direction of the prestressed hollow square pile, and the cross section of the periphery of the prestressed hollow square pile is square;
step two: blanking and manufacturing according to the manufacturing process of the prestressed hollow square pile, mounting a steel nut structure at a position 1800mm away from the end part of the square pile in the through hole, wherein the nut structure is made of forming steel with the length of 300mm, the nut is welded with the prestressed main rib, and the inner wall of the mounted nut protrudes 8mm beyond the inner wall of the pile hole;
step three: the steel reinforcement framework used for secondary core filling consists of four prestressed reinforcements or non-prestressed reinforcements, stirrups wound beside the four main reinforcements and cylindrical steel screw trays, wherein the steel trays consist of cylinders which are 100mm high, 10mm thick, 8mm smaller than the pile holes in radius and provided with screw threads, the steel trays are welded with the main reinforcements, and the stirrups are wound on the main reinforcements;
step four: putting the manufactured steel reinforcement framework into the hollow square pile, and rotating the steel reinforcement framework to enable the screw tray below the steel reinforcement framework to be fastened with the nut structure in the square pile to form a whole;
step five: and grouting directly after the operation is finished.
In conclusion: the construction method for preventing the slurry leakage of the novel prestressed hollow square pile by secondary core filling is simple and convenient to operate, can effectively solve the problem of slurry leakage of concrete, effectively improves the quality of secondary core filling concrete, and forms a slurry leakage prevention measure to a certain extent, thereby further improving the construction quality of the prestressed hollow square pile.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (3)
1. A novel construction method for preventing slurry leakage of a prestressed hollow square pile through secondary core pouring is characterized in that: the prestressed hollow square pile comprises a pile hoop, prestressed tendons, an end plate and a nut structure, wherein the pile hoop is composed of a plurality of prestressed tendons extending along the length direction of the hollow square pile and a hoop tendon spirally surrounding the prestressed tendons, and the prestressed hollow square pile adopts the following steps:
the method comprises the following steps: a central through hole penetrating through the whole prestressed hollow square pile is formed in the center of the prestressed hollow square pile along the length direction of the prestressed hollow square pile, and the cross section of the periphery of the prestressed hollow square pile is square;
step two: blanking and manufacturing according to the manufacturing process of the prestressed hollow square pile, mounting a steel nut structure in the through hole at a position 1800mm away from the end part of the square pile, welding a nut and a prestressed main rib, and enabling the inner wall of the mounted nut to protrude 8mm more than that of the pile hole;
step three: the steel reinforcement framework used for secondary core filling consists of four prestressed tendons or non-prestressed tendons, stirrups wound beside the four main tendons and a cylindrical steel screw tray, wherein the steel tray is welded with the main tendons, and the stirrups are wound on the main tendons;
step four: putting the manufactured steel reinforcement framework into the hollow square pile, and rotating the steel reinforcement framework to fasten a screw tray below the steel reinforcement framework and a nut structure in the square pile into a whole;
step five: after the operation is finished, the grouting can be directly carried out.
2. The novel construction method for secondary core-filling and slurry leakage prevention of the prestressed hollow square pile according to claim 1, characterized in that: the steel tray is composed of a cylinder which is 100mm high, 10mm thick, 8mm smaller than the pile hole in radius and provided with screw threads.
3. The novel construction method for secondary core-filling and slurry leakage prevention of the prestressed hollow square pile according to claim 1, characterized in that: the nut structure is made of profiled steel having a length of 300 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210702818.2A CN114922189A (en) | 2022-06-21 | 2022-06-21 | Novel construction method for secondary core-filling and slurry leakage prevention of prestressed hollow square pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210702818.2A CN114922189A (en) | 2022-06-21 | 2022-06-21 | Novel construction method for secondary core-filling and slurry leakage prevention of prestressed hollow square pile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114922189A true CN114922189A (en) | 2022-08-19 |
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ID=82815547
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210702818.2A Pending CN114922189A (en) | 2022-06-21 | 2022-06-21 | Novel construction method for secondary core-filling and slurry leakage prevention of prestressed hollow square pile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114922189A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN209381060U (en) * | 2018-11-11 | 2019-09-13 | 中建八局浙江建设有限公司 | Prevent tubular pile concrete from filling core leak device |
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2022
- 2022-06-21 CN CN202210702818.2A patent/CN114922189A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN209381060U (en) * | 2018-11-11 | 2019-09-13 | 中建八局浙江建设有限公司 | Prevent tubular pile concrete from filling core leak device |
Non-Patent Citations (1)
| Title |
|---|
| 雷天觉: "《液压工程手册》", 30 April 1990, 机械工业出版社 * |
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Application publication date: 20220819 |
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| RJ01 | Rejection of invention patent application after publication |