CN208105284U - A kind of detachable casing structure improving soft layer pile foundation hole quality - Google Patents
A kind of detachable casing structure improving soft layer pile foundation hole quality Download PDFInfo
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- CN208105284U CN208105284U CN201820030633.0U CN201820030633U CN208105284U CN 208105284 U CN208105284 U CN 208105284U CN 201820030633 U CN201820030633 U CN 201820030633U CN 208105284 U CN208105284 U CN 208105284U
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Abstract
The utility model discloses a kind of detachable casing structures for improving soft layer pile foundation hole quality, belong to pile foundation engineering field, including casing, the casing is tubular structure made of being fixedly linked two-by-two as three sections of jurisdiction side, the section of jurisdiction section is arc, is fixedly connected between two sections of jurisdiction by locating piece.The utility model has the beneficial effects that：Casing is divided into three sections of jurisdiction, it is connected by locating piece, in the integrality for guaranteeing drilling construction stage hole wall, while avoiding the accidents such as collapse hole, shrinkage cavity from occurring, after pile concreting, it takes piecemeal branch to pull out casing, so as to avoid the influence to pile body concrete quality, guarantees construction and design requirement.
Description
Technical field
The utility model relates to pile foundation engineering fields, and in particular to a kind of to improve the removable of soft layer pile foundation hole quality
Unload casing structure.
Background technique
Cast-in-situ bored pile is an important pile-type in pile foundation engineering, using very extensive in civil engineering industry.
The construction of cast-in-situ bored pile is carried out under bad ground and environmental condition, pile foundation quality tends not to be effectively ensured.With
The height of the continuous expansion of construction scope, building is constantly increasing, and the cutting depth and scale of foundation pit are all increasing, right
The requirement of slope protection pile and foundation pile is higher and higher.Meanwhile (soft layer, saturated yielding under the geology or environmental condition of some complexity
Property loess, rock stratum, karst stratum, building waste backfill layer, block stone fill out the stratum of sea and overlength pile) pile, using biography
The cast-in-place pile construction method of system is often extremely difficult, frequent occurrence collapse hole, quicksand, gush phenomena such as mud, necking down, broken pile, or even not
Energy pore-forming, the reliability of pore-forming is lower, and construction cost is very high；The controllability of construction safety is also very low simultaneously.Therefore, it usually needs
It to be constructed using steel pile casting, but at present to the recovery utilization rate bottom of steel pile casting, mainly after concreting, need whole pull out
Steel pile casting can produce bigger effect and abandon the recycling of casing to pile concreting quality, increase construction cost.
Utility model content
In view of the deficiencies in the prior art, the purpose of this utility model is to provide a kind of raising soft layer pile foundations
The detachable casing structure of hole quality carries out steel pile casting using the principle of gradation, piecemeal by improving casing structure scheme
Optimization design has obtained a kind of bottom tonnage demand, low cost and the good optimization structure of adaptability, can be suitable for current weakness
Earth-boring filling pile construction.
To achieve the above objectives, the technical scheme adopted by the utility model is that：
A kind of detachable casing structure improving soft layer pile foundation hole quality, including casing, the casing are by three
Tubular structure made of a section of jurisdiction side is fixedly linked two-by-two, the section of jurisdiction section are arc, are passed through between two sections of jurisdiction
Locating piece is fixedly connected.
Casing is divided into three sections of jurisdiction, is connected by locating piece, in the integrality for guaranteeing drilling construction stage hole wall, is avoided
While the accidents such as collapse hole, shrinkage cavity occur, after pile concreting, piecemeal branch is taken to pull out casing, so as to avoid to stake
The influence of body concrete quality guarantees construction and design requirement.
Further, the casing structure further includes the guide groove for positioning the locating piece, and three guide grooves pass through three
Root crossbeam links into an integrated entity.
Further, the equal length of three crossbeams and the section radius equal to the casing.
Further, the angle of two crossbeams is 120 °.
Further, the positioning key for keeping the casing structure shape is equipped with above the casing.
Further, the section of jurisdiction two sides are equipped with the first section of jurisdiction locating slot for the nested locating piece.
Further, the locating piece corresponding position is fixed equipped with second section of jurisdiction mutually nested with first section of jurisdiction locating slot
Position slot.
First section of jurisdiction locating slot and the second section of jurisdiction locating slot mutually the structure of embedding formation and can just cover on the guide groove, from
And realize the positioning to locating piece.
Further, the total length of three locating pieces is greater than the total length of three sections of jurisdiction.
In construction, firstly, determining pile center position according to field lofting, guide groove is placed in designated position, pressure testing is solid
Positioning is set；Next, specifying casing design length according to field geology situation, positioning block length is calculated, then successively installation is fixed
Position block；Next, installation steel pile casting section of jurisdiction is paid attention to and the occlusion of vertical locating piece using soil layer is squeezed into section by section.
Finally, completing in pile concreting, after design strength to be achieved, start to tear casing open, the sequence for tearing casing open is, first
The sequence of section of jurisdiction post-positioning block reaches and recycles supporting section of jurisdiction while guaranteeing pile foundation quality.
Compared with prior art, the utility model has the advantage of：
(1) casing is divided into three sections of jurisdiction, is connected by locating piece, guarantee drilling construction stage hole wall integrality,
While avoiding the accidents such as collapse hole, shrinkage cavity from occurring, after pile concreting, piecemeal branch is taken to pull out casing, so as to avoid
Influence to pile body concrete quality guarantees construction and design requirement；
(2) first section of jurisdiction locating slots and the second section of jurisdiction locating slot mutually the structure of embedding formation and can just be covered in the guide groove
On, to realize the positioning to locating piece；
(3) supporting section of jurisdiction can completely be recycled while ensuring pile quality using this detachable casing structure,
Project cost is reduced, while using blocking, transport space is reduced, is readily transported.
Detailed description of the invention
Fig. 1 is casing structure figure provided by the embodiment of the utility model；
Fig. 2 is section of jurisdiction provided by the embodiment of the utility model and locating piece connection structure diagram；
Fig. 3 is guide barrel construction figure provided by the embodiment of the utility model.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawings and embodiments.
It is shown in Figure 1, present embodiments provide a kind of detachable casing knot for improving soft layer pile foundation hole quality
Structure, including casing 1, the casing 1 are tubular structure made of being fixedly linked two-by-two as three sections of jurisdiction, 11 side, the section of jurisdiction 11
Section is arc, is fixedly connected between two sections of jurisdiction 11 by locating piece 12.
Casing is divided into three sections of jurisdiction, is connected by locating piece, in the integrality for guaranteeing drilling construction stage hole wall, is avoided
While the accidents such as collapse hole, shrinkage cavity occur, after pile concreting, piecemeal branch is taken to pull out casing, so as to avoid to stake
The influence of body concrete quality guarantees construction and design requirement.
As shown in figure 3, as a preferred embodiment, the casing structure further includes for positioning the locating piece
12 guide groove 13, three guide grooves 13 are linked into an integrated entity by three crossbeams 14.
As a preferred embodiment, the equal length of three crossbeams 14 and the section equal to the casing 1
Radius.
As a preferred embodiment, the angle of two crossbeams 14 is 120 °.
As a preferred embodiment, being equipped with above the casing 1 for keeping determining for the casing structure shape
Position key 15.
As shown in Fig. 2, as a preferred embodiment, 11 two sides of the section of jurisdiction are equipped with for the nested positioning
First section of jurisdiction locating slot 16 of block 12.
As a preferred embodiment, 12 corresponding position of locating piece is equipped with and first section of jurisdiction locating slot 16
The second mutually nested section of jurisdiction locating slot 17.
First section of jurisdiction locating slot and the second section of jurisdiction locating slot mutually the structure of embedding formation and can just cover on the guide groove, from
And realize the positioning to locating piece.
As a preferred embodiment, the total length of three locating pieces 12 is greater than the total of three sections of jurisdiction 11
Length.
In construction, firstly, determining pile center position according to field lofting, guide groove 13 is placed in designated position, pressure testing
Fixed position；Next, specifying 1 design length of casing according to field geology situation, 12 length of locating piece is calculated, then successively
Locating piece 12 is installed；Next, installation steel pile casting section of jurisdiction 11 is paid attention to and the occlusion of locating piece 12 using soil layer is squeezed into section by section.
Finally, completing in pile concreting, after design strength to be achieved, start to tear casing 1 open, the sequence for tearing casing open is：
The sequence of first 11 post-positioning block 12 of section of jurisdiction reaches and recycles supporting section of jurisdiction 11 while guaranteeing pile foundation quality.
The utility model is not limited to above embodiment, for those skilled in the art, not
Under the premise of being detached from the utility model principle, several improvements and modifications can also be made, these improvements and modifications are also considered as this reality
Within novel protection scope.The content being not described in detail in this specification belongs to well known to professional and technical personnel in the field
The prior art.
Claims (8)
1. a kind of detachable casing structure for improving soft layer pile foundation hole quality, which is characterized in that including casing, the shield
Cylinder is tubular structure made of being fixedly linked two-by-two as three sections of jurisdiction side, and the section of the section of jurisdiction is arc, two pipes
It is fixedly connected between piece by locating piece.
2. a kind of detachable casing structure for improving soft layer pile foundation hole quality according to claim 1, feature
It is, the casing structure further includes the guide groove for positioning the locating piece, and three guide grooves pass through three crossbeam connections
Integrally.
3. a kind of detachable casing structure for improving soft layer pile foundation hole quality according to claim 2, feature
It is, the equal length of three crossbeams and the section radius for being equal to the casing.
4. a kind of detachable casing structure for improving soft layer pile foundation hole quality according to claim 3, feature
It is, the angle of two crossbeams is 120 °.
5. a kind of detachable casing structure for improving soft layer pile foundation hole quality according to claim 4, feature
It is, the positioning key for keeping the casing structure shape is equipped with above the casing.
6. a kind of detachable casing structure for improving soft layer pile foundation hole quality according to claim 5, feature
It is, the section of jurisdiction two sides are equipped with the first section of jurisdiction locating slot for the nested locating piece.
7. a kind of detachable casing structure for improving soft layer pile foundation hole quality according to claim 6, feature
It is, the locating piece corresponding position is equipped with the second section of jurisdiction locating slot mutually nested with first section of jurisdiction locating slot.
8. a kind of detachable casing structure for improving soft layer pile foundation hole quality according to claim 7, feature
It is, the total length of three locating pieces is greater than the total length of three sections of jurisdiction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820030633.0U CN208105284U (en) | 2018-01-09 | 2018-01-09 | A kind of detachable casing structure improving soft layer pile foundation hole quality |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820030633.0U CN208105284U (en) | 2018-01-09 | 2018-01-09 | A kind of detachable casing structure improving soft layer pile foundation hole quality |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208105284U true CN208105284U (en) | 2018-11-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820030633.0U Active CN208105284U (en) | 2018-01-09 | 2018-01-09 | A kind of detachable casing structure improving soft layer pile foundation hole quality |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208105284U (en) |
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2018
- 2018-01-09 CN CN201820030633.0U patent/CN208105284U/en active Active
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