CN207812442U - Grouting behind shaft or drift lining side pressure enhances stake - Google Patents
Grouting behind shaft or drift lining side pressure enhances stake Download PDFInfo
- Publication number
- CN207812442U CN207812442U CN201721514020.6U CN201721514020U CN207812442U CN 207812442 U CN207812442 U CN 207812442U CN 201721514020 U CN201721514020 U CN 201721514020U CN 207812442 U CN207812442 U CN 207812442U
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- China
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- pile body
- stake
- endoporus
- behind shaft
- drift lining
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Abstract
The utility model discloses a kind of grouting behind shaft or drift lining side pressures to enhance stake, including pile body, and continuous annular concave-convex unit is distributed in the pile body outer wall from top to bottom, and the section of the bumps unit is serrated；The pile body center from top to bottom be equipped with axially through endoporus, multiple injected hole groups for will be connected to endoporus outside pile body are equipped at intervals on the pile body side wall, each injected hole group includes being arranged as multiple injected holes of annular and being connect with the Grouting Pipe being arranged in the endoporus.The utility model mechanism of action is by changing pile body construction, lateral pressure being generated, to improve the bearing capacity of stake.Show that the utility model grouting behind shaft or drift lining side pressure enhances the bearing capacity of stake than the bearing power increase that is calculated by current specifications about 30% 60% by theory analysis and for the lot of experimental data of a variety of soil properties；Post Grouting Technique is used simultaneously, further increases the intensity and frictional resistance of Pile side soil, is suitable for the various soil properties of domestic different regions, is had broad application prospects and economic benefit.
Description
Technical field
The utility model is related to pile foundation field, specially a kind of novel grouting behind shaft or drift lining side pressure enhances stake.
Background technology
Architectural engineering foundation pile generally uses prestressed concrete pipe pile and part special-shaped precast pile etc. at present, its advantage is that applying
Work facilitates, and pile quality easily ensures；But the disadvantage is that cost is high, it is unfavorable for wide popularization and application.Currently in order to improving architectural engineering
The bearing capacity of foundation pile is typically realized by increasing the contact area with soil in the thinking of increasing friction force, existing《It builds
Build Pile Foundation Code》JGJ94-2008 and《Prestressed concrete special-shaped precast pile technical regulation》GJG/T405-2017 pile foundations
The mechanism of action also without lateral pressure in terms of report.
Utility model content
The purpose of this utility model breaks through existing Pile Foundation Code, provides one kind aiming at defect of the existing technology
High capacity and the lower novel grouting behind shaft or drift lining side pressure of cost enhances stake.
A kind of grouting behind shaft or drift lining side pressure enhancing stake, including pile body, it is recessed that continuous annular is distributed in the pile body outer wall from top to bottom
The section of convex unit, the bumps unit is serrated；The pile body center from top to bottom be equipped with axially through endoporus, it is described
Multiple injected hole groups for will be connected to endoporus outside pile body are equipped at intervals on pile body side wall, each injected hole group includes cloth
It is set to multiple injected holes of annular and is connect with the Grouting Pipe being arranged in the endoporus.
Further, the injected hole is arranged in the recess portion of the annular concave-convex unit.
Further, the vertex of the upper edge sawtooth of the sawtooth extends obliquely upward, the vertex of lower edge sawtooth is to oblique
Lower section extends, and the top of the sawtooth is shorter in length than following length.It is above-mentioned to be designed as preferred sawtooth design, function and effect
Most preferably.
Further, the pile body material is concrete or steel.
Novel grouting behind shaft or drift lining side pressure provided by the utility model enhances stake, and the mechanism of action is by changing pile body construction, production
Raw lateral pressure, to improve the bearing capacity of stake.Show this by theory analysis and for the lot of experimental data of a variety of soil properties
The bearing capacity of utility model grouting behind shaft or drift lining side pressure enhancing stake is than the bearing power increase about 30%-60% that is calculated by current specifications；Simultaneously
Using Post Grouting Technique, the intensity and frictional resistance of Pile side soil are further increased, is suitable for the various soil properties of domestic different regions, tool
Have broad application prospects and economic benefit.
Description of the drawings
Fig. 1 is the structural schematic diagram of grouting behind shaft or drift lining side pressure enhancing stake；
Fig. 2 is the vertical view of Fig. 1（Remove Grouting Pipe）；
Fig. 3 is the application state figure of grouting behind shaft or drift lining side pressure enhancing stake（Before slip casting）；
Force diagram of the soil to stake when Fig. 4 is grouting behind shaft or drift lining side pressure enhancing stake application（After slip casting）；
Counter-force schematic diagram of the stake to soil when Fig. 5 is grouting behind shaft or drift lining side pressure enhancing stake application（After slip casting）；
In figure：1, pile body, 2, endoporus, 3, concave-convex unit, 4, Grouting Pipe, 5, injected hole.
Specific implementation mode
The utility model is described further below in conjunction with specific embodiments and the drawings.
A kind of grouting behind shaft or drift lining side pressure enhancing stake, includes the pile body 1 of concrete or steel material, 1 outer wall of pile body divides from top to bottom
It is furnished with continuous annular concave-convex unit 3, the section of concave-convex unit 3 is serrated；The vertex of the upper edge sawtooth of sawtooth to tiltedly on
Fang Yanshen, lower edge sawtooth vertex oliquely downward extend, and the top of the sawtooth is shorter in length than following length.Pile body 1
Center be equipped with from top to bottom axially through endoporus 2, be equipped at intervals on 1 side wall of pile body multiple for by 1 outside of pile body and endoporus 2
The injected hole group of connection, each injected hole group include be arranged as annular multiple injected holes 5 and be arranged in endoporus 2
Grouting Pipe 4 connects.Injected hole 5 is arranged in the annular concave-convex unit i.e. recess portion of sawtooth.
Referring to Fig. 3-5, in use, after the soil body is inserted into above-mentioned grouting behind shaft or drift lining side pressure enhancing stake first, since pile body outer wall has
There is jagged specific structure, therefore lateral pressure can be generated to pile peripheral earth, to improve the bearing capacity of stake.Then it uses
Post Grouting Technique further increases the intensity and frictional resistance of Pile side soil to cement mortar is injected between pile body and pile peripheral earth,
As it will be easily appreciated by one skilled in the art that the above is only the preferred embodiment of the utility model only, not
To limit the utility model, any modification made within the spirit and principle of the present invention, equivalent replacement and change
Into etc., it should be included within the scope of protection of this utility model.
Claims (3)
1. a kind of grouting behind shaft or drift lining side pressure enhances stake, including pile body, it is characterised in that：The pile body outer wall is distributed with continuously from top to bottom
Annular concave-convex unit, it is described bumps unit section be serrated；The pile body center from top to bottom be equipped with axially through
Endoporus is equipped at intervals with multiple injected hole groups for that will be connected to endoporus outside pile body, each injected hole on the pile body side wall
Group includes being arranged as multiple injected holes of annular and being connect with the Grouting Pipe being arranged in the endoporus；
The vertex of the upper edge sawtooth of the sawtooth extends obliquely upward, the vertex of lower edge sawtooth oliquely downward extends, and institute
The top for stating sawtooth is shorter in length than following length.
2. grouting behind shaft or drift lining side pressure according to claim 1 enhances stake, it is characterised in that：The injected hole is arranged in the ring
The recess portion of shape bumps unit.
3. enhancing stake according to any grouting behind shaft or drift lining side pressure of claims 1 or 2, it is characterised in that：The pile body material is mixed
Solidifying soil or steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721514020.6U CN207812442U (en) | 2017-11-14 | 2017-11-14 | Grouting behind shaft or drift lining side pressure enhances stake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721514020.6U CN207812442U (en) | 2017-11-14 | 2017-11-14 | Grouting behind shaft or drift lining side pressure enhances stake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207812442U true CN207812442U (en) | 2018-09-04 |
Family
ID=63334177
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721514020.6U Active CN207812442U (en) | 2017-11-14 | 2017-11-14 | Grouting behind shaft or drift lining side pressure enhances stake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207812442U (en) |
-
2017
- 2017-11-14 CN CN201721514020.6U patent/CN207812442U/en active Active
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