CN216078765U - Pile foundation post-grouting pipeline joint - Google Patents
Pile foundation post-grouting pipeline joint Download PDFInfo
- Publication number
- CN216078765U CN216078765U CN202121400753.3U CN202121400753U CN216078765U CN 216078765 U CN216078765 U CN 216078765U CN 202121400753 U CN202121400753 U CN 202121400753U CN 216078765 U CN216078765 U CN 216078765U
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- CN
- China
- Prior art keywords
- pipeline
- grouting
- pile foundation
- sleeve
- pipe
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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.)
- Expired - Fee Related
Links
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 239000004033 plastic Substances 0.000 claims description 2
- 238000003466 welding Methods 0.000 claims description 2
- 238000007569 slipcasting Methods 0.000 claims 1
- 230000002787 reinforcement Effects 0.000 abstract description 7
- 238000010276 construction Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 4
- 239000002390 adhesive tape Substances 0.000 abstract description 3
- 239000002985 plastic film Substances 0.000 abstract description 3
- 229920006255 plastic film Polymers 0.000 abstract description 3
- 239000011440 grout Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
Images
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- Piles And Underground Anchors (AREA)
Abstract
The utility model discloses a pile foundation post-grouting pipeline joint which comprises a pipeline sleeve, an end closed pipeline, a grouting pipe and a hole. The pipeline sleeve and the end head closed pipeline are integrated, and a plurality of holes are formed in the surface of the end head closed pipeline. The grouting pipes are connected through a pipeline sleeve. Screwing the pipe sleeve and the pipe through threads, enabling the end head closed pipe to face the outer side of the pile foundation, and enabling the end head closed pipe to be provided with an adhesive tape or a plastic film. The adopted T-shaped grouting structure can be fixed with a pile foundation reinforcement cage, so that the stability of a grouting range is ensured, and a certain positioning effect is achieved; the double grouting pipes are convenient and fast to connect, effectively impact the holes of the end closed pipelines, and guarantee the filling construction quality.
Description
Technical Field
The utility model relates to a pile foundation post-grouting pipeline joint, and belongs to the technical field of building pile foundation construction.
Background
The post-grouting cast-in-place pile utilizes grouting pipes pre-embedded at the bottom and the side of a reinforcement cage, high-pressure grouting is carried out by a high-pressure pump within 2-30 days after the pile is formed, grout is combined with soil around a pile body through the functions of infiltration, splitting, filling, compaction and the like, and the sediment at the bottom of the pile and the mud skin at the side of the pile are solidified, so that the effects of improving the bearing capacity, reducing the subsidence and the like are achieved. The post-grouting technology comprises post-grouting at the pile bottom, post-grouting at the pile side and compound post-grouting at the pile bottom and the pile side. The post-grouting process mainly comprises the following steps:
1. and a grouting chamber is arranged at the bottom of the hole. When the process is adopted, the reinforcement cage needs to be put down to the bottom of the pile.
3. And (3) fixing the grouting pipe on a steel reinforcement cage (a steel pipe or a black iron pipe), and pressing the grouting pipe into the soil at the bottom of the pile by 30-50 cm by adopting a one-way shutoff valve at a grout outlet. Because of the adoption of the one-way shutoff valve, grout can not be poured into the valve when pile body concrete is poured, and the grout can not flow back during grouting.
When the method is applied to construction, pile bottom grouting is adopted. When the pile side grouting is carried out, a hole is arranged at a joint of a grouting pipeline in a commonly adopted method. However, the grouting pipes are arranged on the inner sides of the reinforcing steel bar holes, the distance between each grouting pipe and the outer diameter of each pile is 5-10 cm, and after concrete pouring is completed, the hole splitting effect at the joints of the grouting pipes is poor, so that the grouting amount on the sides of the piles cannot meet the design requirements. Meanwhile, due to the blockage of partial holes, the grouting at the side of the pile is uneven.
Disclosure of Invention
In order to solve the problems, the utility model provides a pile foundation post-grouting pipeline joint which not only can improve the construction quality of pile side grouting, but also can play a role in positioning a reinforcement cage.
In order to achieve the purpose, the technical scheme adopted by the utility model is that the pile foundation post-grouting pipeline joint comprises a pipeline sleeve 1, an end closed pipeline 2, a grouting pipe 3 and a hole 4. The pipeline sleeve 1 is a three-way joint pipeline, two connectors are arranged at the horizontal end, and one connector is arranged at the vertical end; the horizontal end interface of the pipeline sleeve 1 is respectively connected with the grouting pipe 3 through threads; the end closed pipeline 2 is vertically welded on a vertical end interface of the pipeline sleeve 1, and a plurality of holes 4 are formed in the top and the periphery of the end closed pipeline 2.
Furthermore, the diameter of the hole 4 is 1-2 mm.
Further, the pipeline sleeve 1 and the end closed pipeline 2 are connected into a T-shaped structure through welding.
Further, the pipeline sleeve 1 and the end closed pipeline 2 are plastic pipelines or steel pipes.
Compared with the prior art, the utility model has the following beneficial effects.
1. The utility model can effectively improve the pile foundation pile side grouting construction quality.
2. The utility model can play a role in positioning the pile foundation reinforcement cage.
3. The grouting pipeline splicing method is more convenient and fast in grouting pipeline splicing.
Drawings
Fig. 1 is a front view of a pile foundation post-grouting pipe joint of the present invention.
Fig. 2 is a side view of the pile foundation post-grouting pipe joint of the present invention.
In the figure: 1. the pipeline comprises a pipeline sleeve 2, an end closed pipeline 3, a grouting pipe 4 and a hole.
Detailed Description
The utility model is described in detail below with reference to the accompanying drawings:
as shown in figure 1, the device for the pile foundation post-grouting pipeline joint comprises a pipeline sleeve 1, an end closed pipeline 2, a grouting pipe 3 and a hole 4. The pipeline sleeve 1 and the end closed pipeline 2 are integrated, and a plurality of holes 4 with the diameter of 1-2 mm are formed in the surface of the end closed pipeline 2. The grouting pipes 3 are connected by the conduit sleeves 1.
When the grouting pipe is used, the pipe sleeve 1 and the grouting pipe 3 are screwed up through the threads, the end head closed pipe 2 faces the outer side of the pile foundation, and the end head closed pipe 2 is wrapped by an adhesive tape or a plastic film. The two grouting pipes 3 simultaneously perform grouting into the pipeline sleeve 1, the injected grout enters the end closed pipeline 2 through the pipeline sleeve 1, when the pressure reaches a certain degree, the end closed pipeline 2 is broken by wrapping an adhesive tape or a plastic film, and the poured grout enters a gap on the pile side of the pile foundation; the adopted T-shaped grouting structure can be fixed with a pile foundation reinforcement cage, so that the stability of a grouting range is ensured, and a certain positioning effect is achieved; the double grouting pipes 3 are convenient and fast to connect, effectively impact the holes 4 of the end closed pipelines 2, and guarantee the pouring construction quality.
Claims (4)
1. The utility model provides a slip casting pipe joint behind pile foundation which characterized in that: comprises a pipeline sleeve (1), an end closed pipeline (2), a grouting pipe (3) and a hole (4); the pipeline sleeve (1) is a three-way joint pipeline, two connectors are arranged at the horizontal end, and one connector is arranged at the vertical end; the horizontal end interface of the pipeline sleeve (1) is respectively connected with the grouting pipe (3) through threads; the end head closed pipeline (2) is vertically welded on a vertical end interface of the pipeline sleeve (1), and a plurality of holes (4) are formed in the top and the periphery of the end head closed pipeline (2).
2. The pile foundation post-grouting pipe joint of claim 1, characterized in that: the diameter of the hole (4) is 1-2 mm.
3. The pile foundation post-grouting pipe joint of claim 1, characterized in that: the pipeline sleeve (1) and the end closed pipeline (2) are connected into a T-shaped structure through welding.
4. The pile foundation post-grouting pipe joint of claim 1, characterized in that: the pipeline sleeve (1) and the end closed pipeline (2) are plastic pipelines or steel pipes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121400753.3U CN216078765U (en) | 2021-06-23 | 2021-06-23 | Pile foundation post-grouting pipeline joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121400753.3U CN216078765U (en) | 2021-06-23 | 2021-06-23 | Pile foundation post-grouting pipeline joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216078765U true CN216078765U (en) | 2022-03-18 |
Family
ID=80664354
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121400753.3U Expired - Fee Related CN216078765U (en) | 2021-06-23 | 2021-06-23 | Pile foundation post-grouting pipeline joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216078765U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115030171A (en) * | 2022-06-06 | 2022-09-09 | 中国建筑第七工程局有限公司 | Non-return slip casting pipe joint |
-
2021
- 2021-06-23 CN CN202121400753.3U patent/CN216078765U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115030171A (en) * | 2022-06-06 | 2022-09-09 | 中国建筑第七工程局有限公司 | Non-return slip casting pipe joint |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220318 |