CN110863488A - Device for preventing concrete loss of perfusion pile and construction method - Google Patents
Device for preventing concrete loss of perfusion pile and construction method Download PDFInfo
- Publication number
- CN110863488A CN110863488A CN201911121412.XA CN201911121412A CN110863488A CN 110863488 A CN110863488 A CN 110863488A CN 201911121412 A CN201911121412 A CN 201911121412A CN 110863488 A CN110863488 A CN 110863488A
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- reinforcement cage
- concrete
- pile
- rigid cylinder
- preventing
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- 239000004567 concrete Substances 0.000 title claims abstract description 57
- 230000010412 perfusion Effects 0.000 title claims abstract description 21
- 238000010276 construction Methods 0.000 title claims abstract description 16
- 230000002787 reinforcement Effects 0.000 claims abstract description 48
- 239000002002 slurry Substances 0.000 claims abstract description 10
- 239000011440 grout Substances 0.000 claims abstract description 9
- 230000005489 elastic deformation Effects 0.000 claims description 17
- 239000002699 waste material Substances 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000019994 cava Nutrition 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- 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
- E02D5/66—Mould-pipes or other moulds
- E02D5/665—Mould-pipes or other moulds for making piles
-
- 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
- E02D2250/00—Production methods
- E02D2250/0007—Production methods using a mold
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/0023—Cast, i.e. in situ or in a mold or other formwork
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses a device for preventing perfusion pile concrete from losing and a construction method thereof. The construction method for preventing the loss of the cast-in-place pile concrete comprises the steps of sleeving a rigid cylinder outside a reinforcement cage, connecting and fixing the rigid cylinder and the reinforcement cage through a support, extending the reinforcement cage into a pile hole, and pouring concrete grout into the pile hole. The invention fixes a rigid cylinder on the outer side of the reinforcement cage, inserts the reinforcement cage into a pile hole, the rigid cylinder is opposite to the karst cave, and then pours concrete slurry into the pile hole. The rigid cylinder can effectively prevent concrete grout from flowing into the karst cave, so that the concrete in the karst cave does not need to be additionally removed, the concrete waste is avoided, the construction cost is saved, and the application range in the karst cave area is wide.
Description
Technical Field
The invention relates to a device for preventing perfusion pile concrete from losing and a construction method for preventing perfusion pile concrete from losing in the technical field of building engineering.
Background
The construction process of the cast-in-place pile generally comprises the steps of drilling a pile hole meeting the requirements on the ground, installing a reinforcement cage in the pile hole, then pouring concrete, and forming the reinforced concrete cast-in-place pile with the supporting function in the pile hole after the concrete is solidified. However, when the cast-in-place pile is installed in a karst cave area, the pile hole is often communicated with a part of the karst cave in the geological layer, and when concrete is poured into the pile hole, the concrete often flows into the karst cave, so that a great amount of concrete is lost and wasted. This not only wastes a large amount of concrete raw materials, also increases the construction cost of pile driving by a wide margin.
Disclosure of Invention
The invention aims to solve at least one technical problem in the prior art and provides a device for preventing concrete loss of a perfusion pile, which can prevent concrete grout from losing into a karst cave.
The invention also provides a construction method for preventing the concrete loss of the perfusion pile.
According to an embodiment of a first aspect of the present invention, there is provided an apparatus for preventing concrete loss of a perfusion pile, including a rigid tube sleeved outside a reinforcement cage of the perfusion pile; the support comprises at least one connecting plate, and the connecting plate is connected with the inner side of the rigid cylinder and the outer side of the reinforcement cage.
According to the embodiment of the first aspect of the present invention, further, two ends of the rigid cylinder are respectively provided with an annular elastic deformation member, and the elastic deformation members are located between the reinforcement cage and the pile hole.
According to an embodiment of the first aspect of the present invention, further, the elastically deformable member is an inflatable bladder or a rubber member.
According to an embodiment of the first aspect of the present invention, further, the elastically deforming member includes an upper elastic member and a lower elastic member, the upper elastic member is located above the cavern, and the lower elastic member is located below the cavern.
According to the embodiment of the first aspect of the present invention, the connecting plates are annular, the number of the connecting plates is three or more, the outer peripheries of the connecting plates are fixedly connected to the inner sides of the rigid cylinders, and the inner peripheries of the connecting plates are fixedly connected to the reinforcement cage.
According to an embodiment of the first aspect of the present invention, the support further includes a plurality of longitudinal connecting plates, one side of each connecting plate is fixedly connected to the reinforcement cage along the length direction of the reinforcement cage, and the other side of each connecting plate is fixedly connected to the inside of the rigid cylinder.
According to the second aspect of the invention, a construction method for preventing concrete loss of a cast-in-place pile is provided, wherein a rigid cylinder is sleeved outside a reinforcement cage, the rigid cylinder and the reinforcement cage are fixedly connected through a bracket, the reinforcement cage is extended into a pile hole, and concrete grout is poured into the pile hole.
According to the embodiment of the second aspect of the present invention, before the rigid tube is sleeved, the annular elastic deformation members are arranged at two ends of the rigid tube.
According to an embodiment of the second aspect of the invention, further, the method comprises the following steps:
A. annular inflatable air bags are arranged at the two ends of the rigid cylinder along the circumferential direction, and then the rigid cylinder is sleeved outside the reinforcement cage and fixed through a support;
B. stretching the reinforcement cage into the pile hole, and respectively inflating the two inflatable air bags until the inflatable air bags are expanded to be abutted against the inner wall of the pile hole;
C. and pouring concrete slurry into the pile hole to the designed depth.
According to the embodiment of the second aspect of the present invention, further, before the step a, the position and size of the cavern communicating with the pile hole are detected, and then the rigid cylinder with the corresponding length is sleeved and fixed on the corresponding position of the reinforcement cage according to the position and size of each cavern.
The invention has the beneficial effects that: the invention fixes a rigid cylinder on the outer side of the reinforcement cage, inserts the reinforcement cage into a pile hole, the rigid cylinder is opposite to the karst cave, and then pours concrete slurry into the pile hole. The rigid cylinder can effectively prevent concrete grout from flowing into the karst cave, so that the concrete in the karst cave does not need to be additionally removed, the concrete waste is avoided, the construction cost is saved, and the application range in the karst cave area is wide.
Drawings
In order to more clearly illustrate the technical solution in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is clear that the described figures are only some embodiments of the invention, not all embodiments, and that a person skilled in the art can also derive other designs and figures from them without inventive effort.
FIG. 1 is a front cross-sectional view of an apparatus for preventing concrete loss of a perfusion pile according to a first embodiment of the present invention;
FIG. 2 is a top view of a device for preventing concrete loss of a perfusion pile according to a second embodiment of the present invention;
FIG. 3 is a schematic view of a reinforcement cage according to one embodiment of the present invention;
FIG. 4 is a schematic view of an inflatable bladder after inflation in accordance with a first embodiment of the invention.
Detailed Description
Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
Example one
Referring to fig. 1, the device for preventing concrete loss of a perfusion pile in the embodiment includes a rigid cylinder 20 and a support, the rigid cylinder 20 is sleeved outside a reinforcement cage 10 of the perfusion pile, the rigid cylinder 20 is fixed on the reinforcement cage 10 through the support, the support includes at least a plurality of annular connecting plates 30, the outer periphery of each connecting plate 30 is fixedly connected with the inner side of the rigid cylinder 20, and the inner periphery of each connecting plate 30 is fixedly connected with the reinforcement cage 10. Preferably, the outer diameter of the rigid cylinder 20 is greater than or equal to the diameter of the pile hole, and the outer sides of the two ends of the rigid cylinder 20 are respectively connected with the inner wall of the pile hole, so as to further avoid concrete seepage such as karst cave. The rigid cartridge 20 may be a steel member. The connection of the connecting plate 30 to the rigid tube 20 is by welding, and similarly, the connection of the inner periphery of the connecting plate 30 to the reinforcement cage 10 is by welding.
Further, as a preferred embodiment, the rigid tube 20 is provided with annular elastic deformation members 40 at both ends thereof, and the elastic deformation members 40 may be inflatable air bags or rubber members. The elastic deformation piece 40 is located between the reinforcement cage 10 and the pile hole, and when the elastic deformation piece 40 is a rubber piece, the elastic deformation piece 40 can abut against the inner wall of the pile hole. When the elastic deformation piece 40 is an inflatable air bag, sufficient gas is filled into the inflatable air bag, so that the inflatable air bag can be abutted against the inner wall of the pile hole, and the concrete is prevented from flowing into the karst cave to cause waste. In addition, when the elastic deformation member 40 is provided, the outer diameter of the rigid cylinder 20 may be smaller than the diameter of the pile hole.
Further as a preferred embodiment, the elastic deformation member 40 includes an upper elastic member and a lower elastic member, and the rigid cylinder 20 is as long as more than the height of the cavern. The upper elastic part is positioned above the karst cave, so that concrete slurry is prevented from flowing into the karst cave when being poured into the pile hole from the top; meanwhile, the lower elastic part is positioned below the karst cave, so that concrete slurry accumulated in the pile hole is prevented from permeating into the karst cave from the lower part.
Referring to fig. 3 to 4, when the elastic deformation member 40 is an inflatable air bag, the construction method for preventing the concrete loss of the perfusion pile comprises the following steps:
A. annular inflatable air bags are arranged at two ends of the rigid cylinder 20 along the circumferential direction, and then the rigid cylinder 20 is sleeved on the outer side of the reinforcement cage 10 and fixed through a support. Optionally, the bracket comprises a plurality of annular connecting plates 30, the outer peripheries of the connecting plates 30 are welded and fixed with the inner side of the rigid cylinder 20, the inner peripheries of the connecting plates 30 are welded and fixed with the reinforcement cage 10, and the connecting plates 30 are spaced at equal intervals. Because the inflatable bladders are all in a deflated state, they are likely to extend into the stake hole with the rigid cartridge 20. In addition, because the annular connecting plates 30 are all positioned above the lower air bag, the condition that a large amount of concrete slurry is accumulated on the lower air bag to cause the lower air bag to loosen is effectively prevented.
B. And (3) extending the reinforcement cage 10 into the pile hole, and respectively inflating the two inflatable air bags, wherein the upper air bag is positioned above the karst cave and the lower air bag is positioned below the karst cave. The inflatable air bag is positioned between the reinforcement cage 10 and the pile hole, and the inflatable air bag is expanded to be abutted against the inner wall of the pile hole. The upper air bag prevents concrete grout from flowing into the karst cave when being poured from the upper part, and the lower air bag prevents the concrete grout accumulated in the pile hole from permeating into the karst cave from the lower part of the karst cave.
C. And pouring concrete slurry into the pile hole to the designed depth. The concrete slurry bypasses the upper air bag and flows into the reinforcement cage 10 and the rigid cylinder 20, then bypasses the lower air bag and directly flows into the pile hole below the karst cave, and the concrete slurry basically cannot flow into or go deep into the karst cave. The concrete grout not only fills the reinforcement cage 10 and the pile hole, but also fills the space between the reinforcement cage 10 and the rigid cylinder 20, and the connection of the concrete and the rigid cylinder 20 strengthens the strength of the part of the pile located in the karst cave, so that even if the part of the pile is located in the karst cave and is not tightly connected with the underground layer, higher support strength can be still ensured.
Further, as a preferred embodiment, since the pile hole may communicate with a plurality of karst caves, before step a, the position and size of the karst cave communicating with the pile hole are detected, and then the rigid tube 20 with a corresponding length is sleeved and fixed at a corresponding position of the reinforcement cage 10 according to the position and size of each karst cave. Preferably, the length of the rigid cartridge 20 is greater than the height of the corresponding cavern to ensure that the upper air bag can be located above the cavern and the lower air bag can be located below the cavern.
Example two
Referring to fig. 2, the apparatus for preventing concrete loss of a perfusion pile in the present embodiment is different from the first embodiment only in that, in the present embodiment, the support includes a plurality of longitudinal connecting plates 30, one side of each connecting plate 30 is fixedly connected to the reinforcement cage 10 along the length direction of the reinforcement cage 10, and the other side of each connecting plate 30 is fixedly connected to the inside of the rigid tube 20.
While the preferred embodiments of the present invention have been illustrated and described, it will be understood by those skilled in the art that the present invention is not limited to the details of the embodiments shown and described, but is capable of numerous equivalents and substitutions without departing from the spirit of the invention as set forth in the claims appended hereto.
Claims (10)
1. The utility model provides a prevent perfusion stake concrete loss's device which characterized in that includes:
the rigid cylinder (20), the rigid cylinder (20) is sleeved outside the reinforcement cage (10) of the cast-in-place pile;
the support comprises at least one connecting plate (30), and the connecting plate (30) is connected with the inner side of the rigid cylinder (20) and the outer side of the reinforcement cage (10).
2. The device for preventing concrete loss of perfusion pile according to claim 1, wherein: the two ends of the rigid cylinder (20) are respectively provided with an annular elastic deformation piece (40), and the elastic deformation pieces (40) are located between the reinforcement cage (10) and the pile hole.
3. The device for preventing concrete loss of perfusion pile according to claim 2, wherein: the elastic deformation piece (40) is an inflatable air bag or a rubber piece.
4. The device for preventing concrete loss of perfusion pile as claimed in claim 2 or 3, wherein: the elastic deformation piece (40) comprises an upper elastic piece and a lower elastic piece, wherein the upper elastic piece is located above the cavern, and the lower elastic piece is located below the cavern.
5. The device for preventing concrete loss of perfusion pile according to claim 1, wherein: the connecting plates (30) are annular, the number of the connecting plates (30) is more than three, the periphery of each connecting plate (30) is fixedly connected with the inner side of the rigid cylinder (20), and the inner periphery of each connecting plate (30) is fixedly connected with the reinforcement cage (10).
6. The device for preventing concrete loss of perfusion pile according to claim 1, wherein: the support comprises a plurality of longitudinal connecting plates (30), one side of each connecting plate (30) is fixedly connected with the corresponding reinforcement cage (10) along the length direction of the corresponding reinforcement cage (10), and the other side of each connecting plate (30) is fixedly connected with the inside of the corresponding rigid cylinder (20).
7. A construction method for preventing cast-in-place pile concrete loss is characterized by comprising the following steps: the rigid cylinder (20) is sleeved on the outer side of the reinforcement cage (10), the rigid cylinder (20) and the reinforcement cage (10) are connected and fixed through a support, the reinforcement cage (10) extends into a pile hole, and concrete grout is poured into the pile hole.
8. The construction method for preventing the loss of the cast-in-place pile concrete according to claim 7, characterized in that: before the rigid tube (20) is sleeved, annular elastic deformation pieces (40) are arranged at two ends of the rigid tube (20).
9. The construction method for preventing the loss of the concrete of the cast-in-place pile according to claim 8, which is characterized by comprising the following steps:
A. annular inflatable air bags are arranged at two ends of the rigid cylinder (20) along the circumferential direction, and then the rigid cylinder (20) is sleeved on the outer side of the reinforcement cage (10) and fixed through a support;
B. the reinforcement cage (10) is stretched into the pile hole, and the two inflatable air bags are respectively inflated until the inflatable air bags are expanded to be abutted against the inner wall of the pile hole;
C. and pouring concrete slurry into the pile hole to the designed depth.
10. The construction method for preventing the loss of the cast-in-place pile concrete according to claim 9, characterized in that: before the step A, the position and the size of the karst cave communicated with the pile hole are detected, and then a rigid cylinder (20) with a corresponding length is sleeved and fixed at a corresponding position of the reinforcement cage (10) according to the position and the size of each karst cave.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911121412.XA CN110863488A (en) | 2019-11-15 | 2019-11-15 | Device for preventing concrete loss of perfusion pile and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911121412.XA CN110863488A (en) | 2019-11-15 | 2019-11-15 | Device for preventing concrete loss of perfusion pile and construction method |
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| Publication Number | Publication Date |
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| CN110863488A true CN110863488A (en) | 2020-03-06 |
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| CN201911121412.XA Pending CN110863488A (en) | 2019-11-15 | 2019-11-15 | Device for preventing concrete loss of perfusion pile and construction method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112497440A (en) * | 2020-12-02 | 2021-03-16 | 范文祥 | Production and manufacturing die for laminated floor slab |
| CN115142409A (en) * | 2022-06-20 | 2022-10-04 | 中国建筑第八工程局有限公司 | Pile foundation pore-forming slurry leakage repairing device and construction method thereof |
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| CN205046551U (en) * | 2015-09-29 | 2016-02-24 | 昆明捷程桩工有限责任公司 | Solution cavity district sleeve pipe bored concrete pile |
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| CN115142409A (en) * | 2022-06-20 | 2022-10-04 | 中国建筑第八工程局有限公司 | Pile foundation pore-forming slurry leakage repairing device and construction method thereof |
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