CN202689003U - Micropile grouting structure for foundation consolidation of existing buildings - Google Patents
Micropile grouting structure for foundation consolidation of existing buildings Download PDFInfo
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- CN202689003U CN202689003U CN 201220335253 CN201220335253U CN202689003U CN 202689003 U CN202689003 U CN 202689003U CN 201220335253 CN201220335253 CN 201220335253 CN 201220335253 U CN201220335253 U CN 201220335253U CN 202689003 U CN202689003 U CN 202689003U
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- steel pipe
- micropile
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Abstract
The utility model discloses a micropile grouting structure for the foundation consolidation of existing buildings. The micropile grouting structure comprises a steel pipe which is arranged in a drill hole and of which the diameter is 120 to 160 millimeters, wherein the bottom of the steel pipe is inserted into the bottom of the drill hole; the upper end of the steel pipe is 250 to 300 millimeters higher than the bottom surface of a bearing platform; a high-pressure grouting pipe is inserted into the steel pipe; steel pipe limit devices are arranged on the side wall of the steel pipe; a perforated pipe is arranged at the bottom of the high-pressure grouting pipe; a plurality of holes are drilled in the pipe wall of the perforated pipe; an adhesive tape winds the perforated pipe; and a screw thread is arranged at the upper end of the high-pressure grouting pipe. By the micropile grouting structure, a foundation can be consolidated, the bearing capacity of the foundation is improved, the sedimentation rate of the existing buildings is reduced, and adverse effects caused by the sedimentation of the buildings are reduced.
Description
Technical field
The utility model relates to the mini pile slip casting structure for the existing construction foundation consolidation process of natural ground, especially the building of building on loose, the unsettled soft foundation, the building settlement amount is large and can adopt mini pile to carry out the ground stabilization processing in indoor and outdoor when being not easy stablize.
Background technology
At multistory building, especially in the villa building course, less because building weight own, generally ground is processed the enough attention that does not cause design and construction, and the foundation soil backfill time is short, and the soil body is fully not fixed, especially in the littoral soft soil area, the silt soil that has one deck high-compressibility under the ground, therefore settling amount is larger under the effect of upper load, and the sedimentation press cycles is longer.And building main body construction finds sometimes that by measuring the building settlement amount is still larger after finishing, the rate of settling is also larger, cause the house not to be delivered for use according to plan, sometimes also can cause the inclination of building, in order to reduce as early as possible posterior settlement speed and the settling amount of the building that main body construction finishes, prevent from causing the adverse effect in later stage, need this building lot is carried out consolidation process.It is not very suitable that existing foundation reinforcement method is processed for the ground of lower sleeping mud, indoor can't the construction of construction machinery that some methods adopt, do not reach expected effect after some method consolidation process, the impact on structure in some method consolidation process processes is larger.
Summary of the invention
The purpose of this utility model is still larger problem of the rate of settling after solving the multi-storey building main body construction finishes, and slows down its rate of settling, reduces the mini pile slip casting structure that is used for the existing construction foundation consolidation process of its later stage settling amount.
Mini pile slip casting structure for the existing construction foundation consolidation process of the present utility model, it comprises that the diameter that is arranged in the boring is the steel pipe of 120～160 ㎜, described steel pipe bottom is inserted in foot of hole, described steel pipe upper end exceeds cushion cap bottom surface 250-300 ㎜, in described steel pipe, be inserted with the high-pressure slip-casting pipe, at described steel pipe sidewall the steel pipe stop is installed, the bottom of described high-pressure slip-casting pipe is equipped with floral tube, be drilled with a plurality of holes at described floral tube tube wall, be wound with adhesive tape at described floral tube, be provided with screw thread in the pipe upper end of described high-pressure slip-casting pipe.
But adopt mini pile slip casting structure consolidated subsoil of the present utility model, improve bearing capacity of foundation soil, reduce the rate of settling of existing building, reduce the harmful effect that building settlement causes.
Description of drawings
Fig. 1 is the structural representation of the mini pile for the existing construction foundation consolidation process of the present utility model;
Fig. 2 is the top view of mini pile shown in Figure 1.
The specific embodiment
Below in conjunction with instantiation the utility model is done to describe in detail.
Mini pile slip casting structure for the existing construction foundation consolidation process of the present utility model, it comprises that the diameter that is arranged in the boring is the steel pipe 2 of 120～160 ㎜, described steel pipe bottom is inserted in boring 1 bottom, described steel pipe upper end exceeds cushion cap bottom surface 250-300 ㎜, in described steel pipe, be inserted with high-pressure slip-casting pipe 3, at described steel pipe sidewall steel pipe stop 4 is installed, the bottom of described high-pressure slip-casting pipe is equipped with floral tube, be drilled with a plurality of holes at described floral tube tube wall, be wound with adhesive tape at described floral tube, be provided with screw thread in the pipe upper end of described high-pressure slip-casting pipe.
The method of operating of this slip casting structure is: the high-pressure slip-casting pipe is connected on the high-pressure slip-casting pipe mouth of pipe, with high-pressure injection pump to the slip casting of high-pressure slip-casting pipe inner high voltage, wash the adhesive tape that is wrapped on the floral tube open with cement grout, open the aperture on the floral tube, beginning slip casting, grouting pressure is controlled at 1.2MPa, if ground the grout phenomenon occurs and should stop slip casting around finding, can continue slip casting after adopting an effective measure.Excavation exposed the stake end after slip casting was finished, and by designing requirement making cushion cap mini pile and building structure was bound up, to bear built-loading.
Outside the building indoor of having built up, lay mini pile, bear most built-loading by these mini piles, reduce to build the effect to former ground.Adopt the mini pile of this slip casting structure cast for the building of building on loose, the unsettled soft foundation, be applicable to the building settlement amount large and carry out the ground stabilization processing in indoor and outdoor when being not easy stablize, strengthen bearing capacity of foundation soil, reduce the rate of settling of existing building, reduce the harmful effect that building settlement causes.
Claims (1)
1. the mini pile slip casting structure that is used for the existing construction foundation consolidation process, it is characterized in that: it comprises that the diameter that is arranged in the boring is the steel pipe of 120～160 ㎜, described steel pipe bottom is inserted in foot of hole, described steel pipe upper end exceeds cushion cap bottom surface 250-300 ㎜, in described steel pipe, be inserted with the high-pressure slip-casting pipe, at described steel pipe sidewall the steel pipe stop is installed, the bottom of described high-pressure slip-casting pipe is equipped with floral tube, be drilled with a plurality of holes at described floral tube tube wall, be wound with adhesive tape at described floral tube, be provided with screw thread in the pipe upper end of described high-pressure slip-casting pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220335253 CN202689003U (en) | 2012-07-11 | 2012-07-11 | Micropile grouting structure for foundation consolidation of existing buildings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220335253 CN202689003U (en) | 2012-07-11 | 2012-07-11 | Micropile grouting structure for foundation consolidation of existing buildings |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202689003U true CN202689003U (en) | 2013-01-23 |
Family
ID=47544643
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220335253 Expired - Fee Related CN202689003U (en) | 2012-07-11 | 2012-07-11 | Micropile grouting structure for foundation consolidation of existing buildings |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202689003U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106120706A (en) * | 2016-06-27 | 2016-11-16 | 浙大宁波理工学院科技研究院有限公司 | Foundation-reinforcing device and foundation reinforcement method |
-
2012
- 2012-07-11 CN CN 201220335253 patent/CN202689003U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106120706A (en) * | 2016-06-27 | 2016-11-16 | 浙大宁波理工学院科技研究院有限公司 | Foundation-reinforcing device and foundation reinforcement method |
| CN106120706B (en) * | 2016-06-27 | 2018-05-25 | 浙大宁波理工学院科技研究院有限公司 | Foundation-reinforcing device and foundation reinforcement method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130123 Termination date: 20150711 |
|
| EXPY | Termination of patent right or utility model |