CN107119690A - Novel grouting pipe - Google Patents
Novel grouting pipe Download PDFInfo
- Publication number
- CN107119690A CN107119690A CN201710477311.0A CN201710477311A CN107119690A CN 107119690 A CN107119690 A CN 107119690A CN 201710477311 A CN201710477311 A CN 201710477311A CN 107119690 A CN107119690 A CN 107119690A
- Authority
- CN
- China
- Prior art keywords
- outer tube
- core pipe
- grouting
- filling pipe
- slurry filling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000002002 slurry Substances 0.000 claims description 34
- 238000007789 sealing Methods 0.000 claims description 11
- 238000007667 floating Methods 0.000 claims description 10
- 239000007779 soft material Substances 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims 1
- 239000011440 grout Substances 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 238000007569 slipcasting Methods 0.000 description 16
- 239000002689 soil Substances 0.000 description 14
- 238000010276 construction Methods 0.000 description 5
- 239000004568 cement Substances 0.000 description 4
- 239000013049 sediment Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 229920002472 Starch Polymers 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- -1 it is cementing Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Classifications
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/003—Injection of material
Landscapes
- Engineering & Computer Science (AREA)
- General 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)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention discloses a novel grouting pipe, which comprises: outer tube and core pipe are followed the outer tube is from last down evenly seted up a plurality of injected holes in co-altitude department, the core pipe sets up in the outer tube the bottom of core pipe is provided with two-layer grout stopping sheet, end fixed connection between grout stopping sheet and the core pipe, core pipe department between two-layer grout stopping sheet has evenly seted up a plurality of grout holes, tip sets up to big-end-up's toper structure under the outer tube under its bottom, and the port under the outer tube has been seted up to its bottom, and the outer tube inner wall department of tip evenly is provided with at least three and ends the key that floats near the outer tube under the tip end it floats to end to be provided with a ball-type under the key. Through the mode, the grouting device can solve the problems that when a plurality of grouting holes are adopted for grouting, the grouting holes in the lower part are difficult to perform grouting, and one grouting pile adopts a plurality of grouting pipes, so that the manufacturing cost is high and the process is complex.
Description
Technical field
The present invention relates to building field, more particularly to a kind of novel slurry filling pipe.
Background technology
At present in bored pile construction, pile-end post-grouting construction technology mainly plays the role of the following aspects：
First, influence of the reduction Pile bottom sediment to bearing capacity of pile tip
Filling pile construction makes pile bottom force holding layer is disturbed to soften, intensity decreases.Limited simultaneously by construction technology and be difficult
Bottom hole sediment is removed, salvages clean, the sediment of stake bottom residual forms weak compression layer, greatly reduces the bearing capacity of stake, increases
Plus sedimentation.Implement after high-pressure grouting, high pressure slurries produce filling in stake bottom loosened soil and pile soil horizon, to ooze expansion, compacted etc. more
The compound action of the form of kind, changes the boundary condition between its physico chemical mechanics performance and stake and pile-end soil body, makes sediment
Reinforced with pile-end soil body, finally realize the raising of bearing capacity of pile tip.
2nd, influence of the reduction Pile wall mudcake to pile side friction
Mudcake is the one layer of laminar body formed around stake after mud off pile, and general thickness is from several millimeters to several centimetres
.Compared with undisturbed soil between stake, mudcake has higher water content, big void ratio, high-compressibility, low shearing strength, low
The features such as frictional force, mudcake soil intensity is less than inter-pile soil, and is easy to softening, and intensity is participated in after softening and is less than inter-pile soil.There is research
Show, friction-type bored concrete pile causes mudcake blocked up so that single pile bearing because construction period mud is feeding-up, borehole cleaning overlong time
Power reduction up to 50%.
Implement high-pressure slip-casting after cast-in-situ bored pile pile, slurries produce crowd in-out effects in stake Soil Interface and Pile side soil body,
The space in Pile side soil body is filled by slurries, it is cementing, soil strength is greatly improved, that is, improves pile side friction characteristic value.
After mud jacking, the unstable mudcake in stake week can be destroyed, and cement clay slip is re-formed with slurries, and formation shearing strength is higher, with
The annular solid of pile body tight bond, covert expands a footpath, improves pile side friction.
Traditional pile-end post-grouting measure, mainly using two methods：
1st, it is different with pile end grouting position according to stake side, the Grouting Pipe of different length is set；
2nd, multiple injected holes are opened up in a Grouting Pipe, an end and slip casting around pile can be carried out simultaneously.
However, traditional pile-end post-grouting measure is primarily present problems with：1st, a Grouting Pipe is according to pile body slip casting position
Difference is put, multiple injected holes are opened up, while implementing slip casting, it will usually which there is the injected hole on top can realize slip casting, but bottom
Injected hole is difficult to slip casting, and grouting quality is unreliable；2nd, Grouting Pipe is when decentralization, and the buoyancy existed is larger.
The content of the invention
The present invention solves the technical problem of a kind of novel slurry filling pipe is provided, it can solve the problem that using multiple injected holes note
During slurry, the problem of bottom injected hole is difficult to slip casting and a bored concrete pile uses many Grouting Pipes, cost height, complex procedures.
In order to solve the above technical problems, one aspect of the present invention is：A kind of novel slurry filling pipe is provided, wrapped
Include：Outer tube and core pipe, some injected holes are uniformly offered along the outer tube at different height from top to bottom, and the core pipe is set
In in outer tube, two layers of group stop is provided with the bottom of the core pipe, is fixedly connected between the group stop and core pipe, at two layers
Some slurry outlets are uniformly offered at core pipe between group stop, the outer tube bottom is set to up big and down small taper knot
Structure, and its bottom offers outer infratubal port, stops being evenly arranged with least three at the outer tube wall of outer tube bottom
Floating key, that a ball-type is provided between floating key and outer tube bottom is cursory described only.
It is preferred that, it is provided with the excircle of the group stop outside a circle rubber seal, the rubber seal
Footpath is identical with outer tube diameter.
It is preferred that, it is welded to connect between the group stop and core pipe.
It is preferred that, the difference in height between two layers of group stop is more than the maximum diameter of hole of injected hole.
It is preferred that, one section of arc inner wall is provided with the inwall of the outer tube bottom.
It is preferred that, the cylindrical radian that the radian of the arc inner wall is cursory with ball-type matches.
It is preferred that, a circle sealing ring is provided with above the arc inner wall, the internal diameter of the sealing ring is slightly less than ball
The cursory maximum outside diameter of type.
It is preferred that, the sealing ring is made of soft material.
It is preferred that, the outer sheath of the injected hole is provided with one layer of rubber sleeve.
The beneficial effects of the invention are as follows：Of the invention 1, slurry injection height can be effectively controlled using core pipe structure, it is ensured that slurry
Liquid injection design soil layer；2nd, the stake end control valve of outer tube termination, can effectively reduce resistance during Grouting Pipe decentralization, also ensure that simultaneously
Slip casting effect.
Brief description of the drawings
Fig. 1 is a kind of structural representation of preferred embodiment of novel slurry filling pipe one of the invention；
Fig. 2 is a kind of sectional view of shown novel slurry filling pipe；
Fig. 3 is the structural representation of shown outer tube bottom；
Fig. 4 is the enlarged diagram of shown outer tube bottom；
Fig. 5 is Section A-A schematic diagram in Fig. 3；
The mark of each part is as follows in accompanying drawing：1st, outer tube, 2, rubber sleeve, 3, injected hole, 4, core pipe, 5, outer tube bottom,
6th, it is cursory, 7, only floating key, 41, group stop, 42, slurry outlet, 51, arc inner wall, 52, outer infratubal port, 53, soft seal circle.
Embodiment
Presently preferred embodiments of the present invention is described in detail below in conjunction with the accompanying drawings, so that advantages and features of the invention energy
It is easier to be readily appreciated by one skilled in the art, apparent is clearly defined so as to be made to protection scope of the present invention.
Fig. 1 to Fig. 5 is referred to, the embodiment of the present invention includes：
A kind of novel slurry filling pipe, including：Outer tube and core pipe, are uniformly opened up at different height from top to bottom along the outer tube
There are some injected holes, the core pipe is arranged in outer tube, two layers of group stop, the group stop are provided with the bottom of the core pipe
It is fixedly connected between core pipe, some slurry outlets, the outer tube lower end is uniformly offered at the core pipe between two layers of group stop
Portion is set to up big and down small pyramidal structure, and its bottom offers outer infratubal port, in the outer tube of outer tube bottom
Three only floating keys are evenly arranged with wall, that a ball-type is provided between floating key and outer tube bottom is cursory described only.
In the present invention, for improve outer tube decentralization and slip casting one taper of reliability design outer tube bottom, in it
Cursory provided with a ball-type, while cursory top is evenly arranged with three only floating keys, the cursory maximum outside diameter is less than in outer tube
Footpath, more than the diameter of outer infratubal port, when Grouting Pipe is transferred, the cursory floating is blocked floating key position to end, underground water
Flowed through by cursory surrounding, buoyancy of the reduction underground water to Grouting Pipe, when Grouting Pipe opens slip casting operation, cement grout
Compressing is cursory, blocks outer infratubal port, it is ensured that slurries do not flow out from outer infratubal port.
Further, in order to improve during slip casting, cursory sealing is provided with one section at the inwall of the outer tube bottom
Arc inner wall, and the radian cylindrical radian cursory with ball-type of arc inner wall match, meanwhile, in the top of the arc inner wall
A circle sealing ring is provided with, the internal diameter of the sealing ring is slightly less than the cursory maximum outside diameter of ball-type, and the sealing ring is using soft
Material is made.During slip casting, cement grout compressing is cursory so that the lower section of cursory jacking sealing ring, and is coincide with arc inner wall,
So as to prevent cement grout from being flowed out from outer infratubal port.
To improve slip casting accuracy, a core pipe structure is designed, the core pipe is less than the steel pipe of outer tube diameter by an external diameter
It is made, core pipe lower end closing, is being provided with 2~3 slurry outlets close to core pipe lower end, slurry outlet respectively sets a circle only to starch up and down
Piece, is welded to connect between the group stop and core pipe, and a circle rubber seal is provided with the excircle of the group stop, and
The external diameter of the rubber seal is identical with outer tube diameter, can meet when core pipe is moved up and down in outer tube and not destroy in outer tube
Wall, when injecting slurries, can effectively prevent the channelling up and down of slurries, it is ensured that slurries are disposable, reliably inject in the soil body.
Further, some injected holes are uniformly offered at different height from top to bottom along the outer tube, it is past when needing
When which is highly implanted slurries, only the essence of slip casting need to can be realized by the bottom of core pipe close to the injected hole of corresponding height
Accuracy.
During in order to prevent that Grouting Pipe from transferring, the impurity in underground water enters Grouting Pipe, and the outer sheath of the injected hole is provided with
One layer of rubber sleeve.In slip casting, slip casting can be carried out again by pressure bursting rubber sleeve.
Embodiments of the invention are the foregoing is only, are not intended to limit the scope of the invention, it is every to utilize this hair
Equivalent structure or equivalent flow conversion that bright specification and accompanying drawing content are made, or directly or indirectly it is used in other related skills
Art field, is included within the scope of the present invention.
Claims (9)
1. a kind of novel slurry filling pipe, it is characterised in that including：Outer tube and core pipe, along the outer tube from top to bottom in different height
Place uniformly offers some injected holes, and the core pipe is arranged in outer tube, and the bottom of the core pipe is provided with two layers of group stop,
It is fixedly connected between the group stop and core pipe, some slurry outlets, institute is uniformly offered at the core pipe between two layers of group stop
State outer tube bottom and be set to up big and down small pyramidal structure, and its bottom offers outer infratubal port, close to outer tube lower end
At least three are evenly arranged with the outer tube wall in portion and stops floating key, a ball is only provided between floating key and outer tube bottom described
Type is cursory.
2. a kind of novel slurry filling pipe according to claim 1, it is characterised in that set at the excircle of the group stop
There is a circle rubber seal, the external diameter of the rubber seal is identical with outer tube diameter.
3. a kind of novel slurry filling pipe according to claim 1, it is characterised in that the company of welding between the group stop and core pipe
Connect.
4. a kind of novel slurry filling pipe according to claim 1, it is characterised in that the difference in height between two layers of group stop is more than
The maximum diameter of hole of injected hole.
5. a kind of novel slurry filling pipe according to claim 1, it is characterised in that set at the inwall of the outer tube bottom
There is one section of arc inner wall.
6. a kind of novel slurry filling pipe according to claim 5, it is characterised in that the radian of the arc inner wall is floated with ball-type
The cylindrical radian of drift matches.
7. a kind of novel slurry filling pipe according to claim 5, it is characterised in that be provided with above the arc inner wall
One circle sealing ring, the internal diameter of the sealing ring is slightly less than the cursory maximum outside diameter of ball-type.
8. a kind of novel slurry filling pipe according to claim 7, it is characterised in that the sealing ring uses soft material system
Into.
9. a kind of novel slurry filling pipe according to claim 1, it is characterised in that the outer sheath of the injected hole is provided with one layer
Rubber sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710477311.0A CN107119690A (en) | 2017-06-21 | 2017-06-21 | Novel grouting pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710477311.0A CN107119690A (en) | 2017-06-21 | 2017-06-21 | Novel grouting pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107119690A true CN107119690A (en) | 2017-09-01 |
Family
ID=59719350
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710477311.0A Pending CN107119690A (en) | 2017-06-21 | 2017-06-21 | Novel grouting pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107119690A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1587544A (en) * | 2004-07-30 | 2005-03-02 | 于来喜 | Multipurpose controllable slip casting device after cleaving and utilizing process |
| CN201460232U (en) * | 2009-06-15 | 2010-05-12 | 黑龙江宇辉新型建筑材料有限公司 | Unidirectional grout pipe with non-return function |
| CN201908308U (en) * | 2010-12-31 | 2011-07-27 | 中铁港航工程局有限公司 | Grouting sleeve valve pipe |
| CN204112318U (en) * | 2014-07-10 | 2015-01-21 | 李树源 | A kind of technique device improving CFG guncreting pile bearing capacity |
| CN207295722U (en) * | 2017-06-21 | 2018-05-01 | 江苏建院营造股份有限公司 | Novel grouting pipe |
-
2017
- 2017-06-21 CN CN201710477311.0A patent/CN107119690A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1587544A (en) * | 2004-07-30 | 2005-03-02 | 于来喜 | Multipurpose controllable slip casting device after cleaving and utilizing process |
| CN201460232U (en) * | 2009-06-15 | 2010-05-12 | 黑龙江宇辉新型建筑材料有限公司 | Unidirectional grout pipe with non-return function |
| CN201908308U (en) * | 2010-12-31 | 2011-07-27 | 中铁港航工程局有限公司 | Grouting sleeve valve pipe |
| CN204112318U (en) * | 2014-07-10 | 2015-01-21 | 李树源 | A kind of technique device improving CFG guncreting pile bearing capacity |
| CN207295722U (en) * | 2017-06-21 | 2018-05-01 | 江苏建院营造股份有限公司 | Novel grouting pipe |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170901 |