CN113123329A - Post-grouting process for implanted tubular pile - Google Patents
Post-grouting process for implanted tubular pile Download PDFInfo
- Publication number
- CN113123329A CN113123329A CN202110521222.8A CN202110521222A CN113123329A CN 113123329 A CN113123329 A CN 113123329A CN 202110521222 A CN202110521222 A CN 202110521222A CN 113123329 A CN113123329 A CN 113123329A
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- China
- Prior art keywords
- pipe
- grouting
- tubular pile
- post
- pile
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- 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
- 238000000034 method Methods 0.000 title claims abstract description 24
- 239000004568 cement Substances 0.000 claims abstract description 19
- 239000002002 slurry Substances 0.000 claims abstract description 18
- 239000011268 mixed slurry Substances 0.000 claims abstract description 12
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 11
- 238000005553 drilling Methods 0.000 claims abstract description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 11
- 239000010959 steel Substances 0.000 claims description 11
- 238000003466 welding Methods 0.000 claims description 2
- 238000004064 recycling Methods 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 15
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 3
- 239000013049 sediment Substances 0.000 description 3
- 238000007569 slipcasting Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
Images
Classifications
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- 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
- 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
- E02D27/00—Foundations as substructures
- E02D27/10—Deep foundations
- E02D27/12—Pile foundations
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- 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
- E02D5/44—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds with enlarged footing or enlargements at the bottom of the pile
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- 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
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0004—Synthetics
- E02D2300/0018—Cement used as binder
- E02D2300/002—Concrete
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses an implanted tubular pile post-grouting process. The invention comprises the following steps: the method comprises the following steps: a. drilling, injecting cement slurry, and mixing the cement slurry and the slurry to form mixed slurry; hoisting the precast tubular pile, and dropping the precast tubular pile into the drill hole from top to bottom to extrude mixed slurry; b. inserting a grouting pipe into the pipe hole of the precast tubular pile, wherein the grouting pipe penetrates through the pipe hole of the precast tubular pile and extends into the lower part of the bottom surface of the precast tubular pile; c. after the mixed slurry is initially set, performing high-pressure grouting through a grouting pipe, and forming a cement slurry reinforcing layer below the bottom surface and on the pile side of the precast tubular pile; d. and after grouting is finished, the grouting pipe is drawn out, and the grouting pipe is recycled. The invention can greatly improve the bearing capacity of the foundation pile, and has the advantages of low construction cost and low construction difficulty, and the construction progress can not be influenced.
Description
Technical Field
The invention relates to a post-grouting process for an implanted tubular pile, and belongs to the field of engineering construction.
Background
The construction method is that drilling is carried out according to design requirements, hole expanding is carried out on the hole bottom according to design diameter and height, pile end cement paste and pile periphery cement paste are injected after hole expanding is completed, the drilling is carried out while grouting is carried out, the pile is implanted into a design elevation by means of dead weight of the pile after grouting is completed, and the pile and a solidified soil body are integrated through solidification of the pile end cement paste and the pile periphery cement paste. However, for soft soil areas such as Hangzhou, the common implanted tubular pile construction process still has certain defects in the bearing capacity of the foundation pile. And the existing implanted tubular pile is easy to form pile bottom sediment, and the pile bottom sediment is also easy to reduce the bearing capacity of the foundation pile and even cause the settlement of the house.
Disclosure of Invention
The invention aims to provide a post-grouting process for an implanted tubular pile. The invention can greatly improve the bearing capacity of the foundation pile, reduce the settlement of the house, and has low construction cost, energy saving and environmental protection.
In order to solve the technical problems, the technical scheme of the invention is as follows: the post-grouting process of the implanted tubular pile comprises the following steps:
a. drilling, injecting cement slurry, and mixing the cement slurry and the slurry to form mixed slurry; hoisting the precast tubular pile, and dropping the precast tubular pile into the drill hole from top to bottom to extrude mixed slurry;
b. inserting a grouting pipe into the pipe hole of the precast tubular pile, wherein the grouting pipe penetrates through the pipe hole of the precast tubular pile and extends into the lower part of the bottom surface of the precast tubular pile;
c. after the mixed slurry is initially set, performing high-pressure grouting through a grouting pipe, and forming a cement slurry reinforcing layer below the bottom surface and on the pile side of the precast tubular pile;
d. and after grouting is finished, the grouting pipe is drawn out, and the grouting pipe is recycled.
In the post-grouting process of the implanted tubular pile, a fixed pipe is sleeved at the bottom of the grouting pipe, and the lower part of the fixed pipe is connected with a guide disc; the outer sleeve is sleeved outside the grouting pipe, and the bottom of the outer sleeve is connected and fixed with the fixed pipe.
In the implanted tubular pile post-grouting process, in the step c, after high-pressure grouting is performed through the grouting pipe, the grouting pipe is pulled upwards, so that the grouting pipe is recycled.
In the implanted tubular pile post-grouting process, the fixed pipe is a steel pipe, the guide disc comprises annular reinforcing steel bars, and a plurality of radial reinforcing steel bars are welded between the steel pipe and the annular reinforcing steel bars.
In the post-grouting process of the implanted tubular pile, the outer sleeve is a plastic pipe, a PVC pipe and a corrugated pipe.
In the post-grouting process of the implanted tubular pile, the grouting pipe is formed by splicing a plurality of steel pipes.
In the post-grouting process of the implanted tubular pile, the outer diameter of the guide disc is slightly smaller than the inner diameter of the pipe hole of the tubular pile.
Compared with the prior art, the invention has the following characteristics and beneficial effects:
1. after the pile planting of the prefabricated pipe column is finished, the grouting pipe is inserted into the pipe hole of the prefabricated pipe column, penetrates through the pipe hole of the prefabricated pipe column and extends to the position below the bottom surface of the prefabricated pipe column, high-pressure grouting is performed through the grouting pipe, a cement slurry reinforcing layer is formed below the bottom surface of the prefabricated pipe column, and meanwhile, pile bottom sediment can be effectively eliminated, so that the bearing capacity of the foundation pile is greatly improved, the process is low in construction cost and low in construction difficulty, and the construction progress cannot be influenced.
2. Furthermore, a fixed pipe is tightly sleeved at the bottom of the grouting pipe, and the lower part of the fixed pipe is connected with a guide disc; the outer sleeve is sleeved outside the grouting pipe, and the bottom of the outer sleeve is connected and fixed with the fixed pipe. During construction, the grouting pipe, the outer sleeve and the fixing pipe are combined into a whole and inserted into the pipe hole of the pipe pile together, the bottom of the grouting pipe is slightly longer than the outer sleeve and the fixing pipe, the grouting pipe extends into the lower portion of the bottom surface of the pipe pile, and high-pressure grouting is performed on the lower portion of the pipe pile. After high-pressure grouting is carried out through the grouting pipe, after the cement paste reaches a certain strength, the outer sleeve is pressed, and the grouting pipe is pulled upwards, so that the grouting pipe is recycled.
Drawings
FIG. 1 is a schematic illustration of the construction of the present invention;
fig. 2 is a construction plan view of the present invention.
Detailed Description
The present invention will be described in further detail with reference to examples, but the present invention is not limited thereto.
Example 1: the post-grouting process of the implanted tubular pile, as shown in the attached figures 1 and 2, comprises the following steps:
a. drilling, injecting cement slurry, and mixing the cement slurry and the slurry to form mixed slurry; hoisting the precast tubular pile, and dropping the precast tubular pile into the drill hole from top to bottom to extrude mixed slurry;
b. inserting a grouting pipe into the pipe hole of the precast tubular pile, wherein the grouting pipe penetrates through the pipe hole of the precast tubular pile and extends into the lower part of the bottom surface of the precast tubular pile; a fixed pipe is tightly sleeved at the bottom of the grouting pipe, the fixed pipe can be a short steel pipe, and a guide disc is welded at the lower part of the fixed pipe; the outer sleeve is sleeved outside the grouting pipe, the bottom of the outer sleeve is connected and fixed with the fixed pipe, and the outer sleeve and the fixed pipe can be bound by steel bars. During construction, the grouting pipe, the outer sleeve and the fixing pipe are combined into a whole and inserted into the pipe hole of the pipe pile together, the bottom of the grouting pipe is slightly longer than the outer sleeve and the fixing pipe, the grouting pipe extends into the lower portion of the bottom surface of the pipe pile, and high-pressure grouting is performed on the lower portion of the pipe pile.
c. After the mixed slurry is initially set, performing high-pressure grouting through a grouting pipe, and forming a cement slurry reinforcing layer below the bottom surface of the precast tubular pile;
d. after grouting, preferably when cement slurry in the pipe hole of the precast pipe pile is not solidified, the outer sleeve is fixed, and then the grouting pipe is drawn out to realize recovery of the grouting pipe.
As further preferred, the fixed pipe be the steel pipe, the positioning disk includes the hoop reinforcing bar, has many radial reinforcing bars between steel pipe and hoop reinforcing bar welding. The effect of positioning disk is, when the slip casting pipe combination is inserting, can provide the guide effect in the tube hole of tubular pile for the slip casting pipe can remain throughout and be placed in the middle, avoids the slip casting pipe slope, leads to construction error. As a specific implementation, the outer sleeve can be a plastic pipe, a PVC pipe or a corrugated pipe. The grouting pipe can be formed by splicing a plurality of short steel pipes. The outer diameter of the guide disc is slightly smaller than the inner diameter of the pipe hole of the pipe pile, so that the grouting pipe can be kept centered to the maximum extent. Before the grouting pipe is pulled out, lubricating oil can be firstly input between the grouting pipe and the fixed pipe, so that the grouting pipe can be conveniently pulled out of the fixed pipe.
The embodiments of the present invention are not limited to the above-described examples, and various changes made without departing from the spirit of the present invention are within the scope of the present invention.
Claims (7)
1. The post-grouting process of the implanted tubular pile is characterized in that: the method comprises the following steps:
a. drilling, injecting cement slurry, and mixing the cement slurry and the slurry to form mixed slurry; hoisting the precast tubular pile, and dropping the precast tubular pile into the drill hole from top to bottom to extrude mixed slurry;
b. inserting a grouting pipe into the pipe hole of the precast tubular pile, wherein the grouting pipe penetrates through the pipe hole of the precast tubular pile and extends into the lower part of the bottom surface of the precast tubular pile;
c. after the mixed slurry is initially set, performing high-pressure grouting through a grouting pipe, and forming a cement slurry reinforcing layer below the bottom surface and on the pile side of the precast tubular pile;
d. and after grouting is finished, the grouting pipe is drawn out, and the grouting pipe is recycled.
2. The post-grouting process for the implanted tubular pile according to claim 1, wherein: the bottom of the grouting pipe is sleeved with a fixed pipe, and the lower part of the fixed pipe is connected with a guide disc; the outer sleeve is sleeved outside the grouting pipe, and the bottom of the outer sleeve is connected and fixed with the fixed pipe.
3. The post-grouting process for the implanted tubular pile according to claim 2, wherein: in the step c, after high-pressure grouting is carried out through the grouting pipe, the grouting pipe is pulled upwards, and recycling of the grouting pipe is achieved.
4. The post-grouting process for the implanted tubular pile according to claim 3, wherein: the fixed pipe be the steel pipe, the positioning disk includes the hoop reinforcing bar, the welding has many radial reinforcing bars between steel pipe and hoop reinforcing bar.
5. The post-grouting process for the implanted tubular pile according to claim 1, wherein: the outer sleeve is a plastic pipe, a PVC pipe and a corrugated pipe.
6. The post-grouting process for the implanted tubular pile according to claim 1, wherein: the grouting pipe is formed by splicing a plurality of steel pipes.
7. The post-grouting process for the implanted tubular pile according to claim 1, wherein: the outer diameter of the guide disc is slightly smaller than the inner diameter of the pipe hole of the pipe pile.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110521222.8A CN113123329A (en) | 2021-05-13 | 2021-05-13 | Post-grouting process for implanted tubular pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110521222.8A CN113123329A (en) | 2021-05-13 | 2021-05-13 | Post-grouting process for implanted tubular pile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113123329A true CN113123329A (en) | 2021-07-16 |
Family
ID=76781781
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110521222.8A Pending CN113123329A (en) | 2021-05-13 | 2021-05-13 | Post-grouting process for implanted tubular pile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113123329A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202510163U (en) * | 2012-03-02 | 2012-10-31 | 中科华圣(北京)岩土工程有限公司 | Goaf grouting device |
| CN103184734A (en) * | 2013-03-19 | 2013-07-03 | 浙江天润建设有限公司 | Implanted and grouted compound pile and construction method |
| CN104074183A (en) * | 2014-07-03 | 2014-10-01 | 国鼎(南通)管桩有限公司 | Drilling and concrete injected root composite pile implanting pile structure and construction method |
| CN207959218U (en) * | 2017-09-28 | 2018-10-12 | 中建八局第四建设有限公司 | A kind of assembly device of Grouting Pipe |
| CN111074883A (en) * | 2020-02-25 | 2020-04-28 | 周同和 | Post-grouting permeable concrete pipe pile and construction method thereof |
| CN112227376A (en) * | 2020-11-06 | 2021-01-15 | 广州机施建设集团有限公司 | Sleeve valve pipe and grouting construction method comprising sleeve valve pipe |
| CN112726583A (en) * | 2020-12-24 | 2021-04-30 | 华能黑龙江发电有限公司 | Construction method for drilling prefabricated composite pile |
-
2021
- 2021-05-13 CN CN202110521222.8A patent/CN113123329A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202510163U (en) * | 2012-03-02 | 2012-10-31 | 中科华圣(北京)岩土工程有限公司 | Goaf grouting device |
| CN103184734A (en) * | 2013-03-19 | 2013-07-03 | 浙江天润建设有限公司 | Implanted and grouted compound pile and construction method |
| CN104074183A (en) * | 2014-07-03 | 2014-10-01 | 国鼎(南通)管桩有限公司 | Drilling and concrete injected root composite pile implanting pile structure and construction method |
| CN207959218U (en) * | 2017-09-28 | 2018-10-12 | 中建八局第四建设有限公司 | A kind of assembly device of Grouting Pipe |
| CN111074883A (en) * | 2020-02-25 | 2020-04-28 | 周同和 | Post-grouting permeable concrete pipe pile and construction method thereof |
| CN112227376A (en) * | 2020-11-06 | 2021-01-15 | 广州机施建设集团有限公司 | Sleeve valve pipe and grouting construction method comprising sleeve valve pipe |
| CN112726583A (en) * | 2020-12-24 | 2021-04-30 | 华能黑龙江发电有限公司 | Construction method for drilling prefabricated composite pile |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210716 |