CN220080006U - Static force breaking device for pile head of filling pile by embedded expansion rod method - Google Patents
Static force breaking device for pile head of filling pile by embedded expansion rod method Download PDFInfo
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- CN220080006U CN220080006U CN202320932192.4U CN202320932192U CN220080006U CN 220080006 U CN220080006 U CN 220080006U CN 202320932192 U CN202320932192 U CN 202320932192U CN 220080006 U CN220080006 U CN 220080006U
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- pile head
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- 238000000034 method Methods 0.000 title claims abstract description 19
- 230000003068 static effect Effects 0.000 title claims abstract description 13
- 230000002787 reinforcement Effects 0.000 claims abstract description 35
- 239000012528 membrane Substances 0.000 claims abstract description 15
- 238000004804 winding Methods 0.000 claims abstract description 7
- 239000004067 bulking agent Substances 0.000 claims description 12
- 239000003795 chemical substances by application Substances 0.000 claims description 11
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 101150082208 DIABLO gene Proteins 0.000 claims description 3
- 102100033189 Diablo IAP-binding mitochondrial protein Human genes 0.000 claims description 3
- 239000010424 alunite Substances 0.000 claims description 3
- 229910052934 alunite Inorganic materials 0.000 claims description 3
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims description 3
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 3
- 239000000292 calcium oxide Substances 0.000 claims description 3
- KPZTWMNLAFDTGF-UHFFFAOYSA-D trialuminum;potassium;hexahydroxide;disulfate Chemical compound [OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[Al+3].[Al+3].[Al+3].[K+].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O KPZTWMNLAFDTGF-UHFFFAOYSA-D 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 abstract description 7
- 238000005553 drilling Methods 0.000 abstract description 3
- 239000000428 dust Substances 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 7
- 238000002955 isolation Methods 0.000 description 6
- 230000035882 stress Effects 0.000 description 6
- 238000004080 punching Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
Abstract
The utility model discloses a static force breaking device for a pile head of a filling pile by a pre-buried expansion rod method, which relates to the field of breaking technology for pile heads of filling piles, and comprises an expansion device arranged between a pile foundation body and the pile foundation pile head, wherein an inner membrane of an isolating membrane is arranged between main ribs of a reinforcement cage in a cross winding manner, and an outer membrane of the isolating membrane is arranged on the outer side of the main ribs of the reinforcement cage in a ring winding manner; the expansion device comprises an L-shaped positioning rib arranged on one side of the main reinforcement of the reinforcement cage, an embedded expansion rod support is arranged close to the L-shaped positioning rib and the main reinforcement of the reinforcement cage, and an expansion rod is arranged in the embedded expansion rod support; fixing clamps are arranged on the upper portion and the lower portion of the two sides of the embedded expansion rod support, and support expansion joints are arranged in the middle of the two sides of the embedded expansion rod support. The utility model omits procedures such as on-site cutting, drilling, grouting and the like, has simple operation, and reduces dust and noise; the pile head can be automatically broken at a designated position, so that the reinforcement protection layer can be conveniently stripped manually; the difficulty of manually stripping and decomposing the pile head is reduced, and the pile head breaking efficiency is improved.
Description
Technical Field
The utility model relates to the field of pile head breaking processes of cast-in-place piles, in particular to a static pile head breaking device for a cast-in-place pile by a pre-buried expansion rod method.
Background
In the construction process of a large number of pile foundations such as bridges, house buildings and water conservancy, pile heads are broken by combining different procedures such as pre-burying, cutting, punching, chiseling, lifting and the like. The novel and efficient pile head breaking mode at present is as follows: and (3) isolating concrete by using a plastic hose of a main reinforcement sleeve, placing an annular foam hose at a designated position to form a stress concentration section, cutting an elevation line after pouring, punching by using an air gun, separating by using a splitting machine, and finally vertically lifting and removing a pile head by using a crane at four points. The method can realize nondestructive pile head breaking, but consumes more time and equipment investment in cutting, punching and splitting links. In addition, the pile foundation concrete pouring is finished and the pile foundation concrete pouring has a certain strength, and then the expansion agent is poured, so that the pile head is automatically broken by utilizing the concentration of expansion force on the same section, links such as cutting and punching are omitted, the pile foundation concrete pouring device is more environment-friendly, and the defect that a grouting pipe is needed to be reserved, then expansion slurry is manually poured, and the time and the labor are consumed is overcome.
Therefore, it is necessary to study a pile head breaking device which can automatically break the pile head at a designated position and is convenient for manually stripping the reinforcement protection layer.
Disclosure of Invention
The utility model aims at overcoming the defects in the prior art, and designs a static breaking device for the pile head of the filling pile by the embedded expansion rod method, so that the separation of the static pile head is realized, the later injection of expansion materials is not needed, and the on-site operation time is shortened.
In order to achieve the above purpose, the utility model provides a static force breaking device for a pile head of a filling pile by a pre-buried expansion rod method, which adopts the following technical scheme that: an expansion device is arranged between the pile foundation pile body and the pile foundation pile head, an isolating membrane inner membrane is arranged between the main reinforcement ribs of the steel reinforcement cage in a crossed winding mode, and an isolating membrane outer membrane is arranged on the outer side of the main reinforcement ribs of the steel reinforcement cage in an annular winding mode.
Further, the expansion device comprises an L-shaped positioning rib arranged on one side of the main reinforcement of the reinforcement cage, an embedded expansion rod support is arranged in a manner of clinging to the L-shaped positioning rib and the main reinforcement of the reinforcement cage, and an expansion rod is arranged inside the embedded expansion rod support.
Furthermore, fixing clamps are arranged on the two sides of the embedded expansion rod support up and down, and support expansion gaps are arranged in the middle of the two sides of the embedded expansion rod support.
Further, the expanding agent or the crushing agent used inside the expanding rod comprises: SMAC high-efficiency bulking agent, HSCA high-efficiency silent crushing agent, alunite bulking agent, CSA bulking agent, and calcium oxide bulking agent.
Compared with the prior art, the utility model has the beneficial effects that:
1. the pile head can be automatically broken at a designated position, so that the reinforcement protection layer can be conveniently stripped manually;
2. when the large crane equipment is not arranged on site, the difficulty of manually stripping and decomposing the pile head is reduced, and the pile head breaking efficiency is improved;
3. the working procedures of on-site cutting, drilling, grouting and the like are omitted, the operation is simple, and the dust and noise are reduced; the pile breaking effect can be improved by reasonably designing the shape and the size of the expansion device, and the consumable cost is reduced by mass production of the expansion bracket and the expansion rod.
Drawings
FIG. 1 is a schematic view of an embedment installation of the present utility model;
FIG. 2 is a schematic top view of an expansion device installation of the present utility model;
FIG. 3 is a schematic top view of the barrier film installation of the present utility model;
FIG. 4 is a schematic diagram of the front view of the expansion device of the present utility model;
fig. 5 is a schematic side view of the expansion device of the present utility model.
In the figure: 1-pile foundation pile body; 2-pile foundation pile heads; 3-a main reinforcement of the reinforcement cage; 4-embedding an expansion rod bracket; 401-a fixing card; 402-L-shaped positioning ribs; 403-stent expansion slots; 5-isolating the inner membrane; 6-isolating membrane outer membrane; 7-expansion rod.
Detailed Description
Preferred embodiments of the present utility model will be described in more detail below. While the preferred embodiments of the present utility model are described below, it should be understood that the present utility model may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the utility model to those skilled in the art.
In the description of the present utility model, it should be noted that the terms "first," "second," and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
As shown in fig. 1-5, the utility model relates to a static force breaking device for a pile head of a filling pile by a pre-buried expansion rod method, which comprises the following steps: an expansion device is arranged between the pile foundation pile body (1) and the pile foundation pile head (2), the expansion device comprises an L-shaped positioning rib (402) arranged on one side of a main reinforcement (3) of the steel reinforcement cage, the L-shaped positioning rib (402) and the main reinforcement (3) of the steel reinforcement cage are tightly attached to each other, an embedded expansion rod support (4) is arranged, and an expansion rod (7) is arranged inside the embedded expansion rod support (4).
Fixing clamps (401) are arranged on the two sides of the embedded expansion rod support (4) up and down, and support expansion gaps (403) are formed in the middle of the two sides of the embedded expansion rod support (4).
Isolation films are respectively and alternately wound and annularly wound between the main ribs (3) of the reinforcement cage, wherein the isolation films which are alternately wound are isolation film inner films (5), and the isolation films which are annularly wound are isolation film outer films (6).
The main operation and the process in the specific operation of the utility model comprise:
1. customizing a certain number of embedded expansion rod brackets with proper sizes according to pile foundation design parameters;
2. marking a pile head breaking position of the pile foundation on a main reinforcement of the reinforcement cage, wherein the pile head breaking position is about 10cm higher than the elevation of a designed pile top;
3. calculating the number of expansion devices according to the diameter of the pile, and fixing the embedded expansion rod supports;
4. winding a double-layer isolating film around a main reinforcement of a reinforcement cage at the upper part of the embedded expansion rod support, and coating a release agent on the outer layer of the sounding pipe;
5. according to the final setting time of the concrete, an expansion rod with matched expansion rate is selected and arranged on a pre-buried expansion rod bracket, and is fixed by pressing a fixing clamp;
6. pouring pile foundation concrete, absorbing water by an expansion rod, and starting chemical reaction;
7. along with the increase of the strength of the concrete, the expansion stress around the pile top is gradually increased to form a transverse stress concentration section, and when the expansion stress strength exceeds the tensile strength of the concrete, the pile head breaking position of the pile foundation is broken;
8. digging a foundation pit of the pile foundation, searching a broken position of the root part of the pile head, and checking the direction and width of the crack;
9. if the expansion crack is smoother and wider, the pile head can be lifted vertically by the lifting equipment; if the crack is not clear, the pile breaking can be properly delayed, and the pile head can be manually broken;
10. and (5) manually trimming the section of the pile top and cleaning sundries on the pile top.
Among the expansion rods, the expansion agents and breaking agents that can be used with reference are: SMAC high-efficiency bulking agent, HSCA high-efficiency silent crushing agent, alunite bulking agent, CSA bulking agent, calcium oxide bulking agent, etc. In practice, single or multiple expansion materials are selected according to pile foundation design size, concrete setting time and strength parameters, and an expansion material formula meeting the use requirements is designed.
The expansion rod is a mixture of an expanding agent and cement and other materials, is packaged in a ham sausage-shaped permeable bag, and gradually expands in volume by absorbing ambient moisture and slowly performing chemical reaction in the interior; the strength increasing rate of the expansion rod and pile foundation concrete is crossed within 2 to 4 days, and the pile head is separated from the pile body at the stress concentration section; because the isolating film breaks the integrity of the pile head, the concrete can slide or crack to different degrees under the action of the upper and lower main stresses, so that the pile head is easy to remove.
The method consumes a small amount of expansion materials, isolation films and bracket manufacturing materials, omits working procedures such as on-site cutting, drilling, grouting and the like, and is simple to operate, and dust and noise are reduced; the pile breaking effect can be improved by reasonably designing the shape and the size of the expansion device, and the consumable cost is reduced by mass production of the expansion bracket and the expansion rod; the swelling materials and the formulas which are more suitable for the technology can be selected through experiments, and the static pile-breaking head aging is optimized.
The above embodiments are only preferred embodiments of the present utility model, and the above description is not intended to limit the scope of the present utility model in turn, and the above description is illustrative, not exhaustive, and therefore: all equivalent changes in structure, shape, and principle of the utility model are intended to be encompassed within the scope of the utility model, as many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the embodiments described.
Claims (4)
1. The utility model provides a pre-buried expansion rod method bored concrete pile head static force abolishes device which characterized in that includes: an expansion device is arranged between the pile foundation pile body (1) and the pile foundation pile head (2), an isolating membrane inner membrane (5) is arranged between the main reinforcement ribs (3) in a cross winding manner, and an isolating membrane outer membrane (6) is arranged on the outer side of the main reinforcement ribs (3) in an annular winding manner.
2. The static breaking device for pile heads of cast-in-place piles by the embedded expansion rod method according to claim 1, wherein the expansion device comprises an L-shaped positioning rib (402) arranged on one side of a main reinforcement (3) of a steel reinforcement cage, an embedded expansion rod support (4) is arranged in close contact with the L-shaped positioning rib (402) and the main reinforcement (3) of the steel reinforcement cage, and an expansion rod (7) is arranged inside the embedded expansion rod support (4).
3. The static breaking device for pile heads of pre-buried expansion rod method filling piles according to claim 2, wherein fixing clamps (401) are arranged on two sides of the pre-buried expansion rod support (4) up and down, and support expansion gaps (403) are formed in the middle of two sides of the pre-buried expansion rod support (4).
4. A static pile head breaking device for cast-in-place piles according to claim 2, wherein the expanding agent or breaker used inside the expanding rod (7) comprises: SMAC high-efficiency bulking agent, HSCA high-efficiency silent crushing agent, alunite bulking agent, CSA bulking agent, and calcium oxide bulking agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320932192.4U CN220080006U (en) | 2023-04-24 | 2023-04-24 | Static force breaking device for pile head of filling pile by embedded expansion rod method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320932192.4U CN220080006U (en) | 2023-04-24 | 2023-04-24 | Static force breaking device for pile head of filling pile by embedded expansion rod method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220080006U true CN220080006U (en) | 2023-11-24 |
Family
ID=88822331
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320932192.4U Active CN220080006U (en) | 2023-04-24 | 2023-04-24 | Static force breaking device for pile head of filling pile by embedded expansion rod method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220080006U (en) |
-
2023
- 2023-04-24 CN CN202320932192.4U patent/CN220080006U/en active Active
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