CN204491617U - A kind of static pressure or hammering concrete precast pipe pile pile bottom post-grouting device - Google Patents
A kind of static pressure or hammering concrete precast pipe pile pile bottom post-grouting device Download PDFInfo
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- CN204491617U CN204491617U CN201520032225.5U CN201520032225U CN204491617U CN 204491617 U CN204491617 U CN 204491617U CN 201520032225 U CN201520032225 U CN 201520032225U CN 204491617 U CN204491617 U CN 204491617U
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- grouting pipe
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Abstract
The utility model discloses a kind of static pressure or hammering concrete precast pipe pile pile bottom post-grouting device, precast pile tip is arranged on bottom prefabricated tubular pile, precast pile tip is provided with slip casting outlet, Grouting Pipe is arranged on prefabricated tubular pile inside, Grouting Pipe is exported by the slip casting channel connection slip casting of precast pile tip inside, Grouting Pipe and one end oral area of slip casting passage pass through together with connector compact siro spinning technology, locator is provided with between prefabricated tubular pile inwall and Grouting Pipe outer wall, precast pile tip is arranged on bottom prefabricated tubular pile, and export end opening with cork shutoff slip casting, passage in precast pile tip is suitable for reading to be connected Grouting Pipe by connector and installs locator, static pressure or hammering complete the installation of prefabricated tubular pile, 24 hours post-infusion cement slurries, the water/binder ratio of cement paste is 0.5 ~ 0.7, water/binder ratio hour adds water reducing agent, Grouting Pipe can be extracted after completing slip casting, reuse.The beneficial effects of the utility model to improve single pile bearing capacity, reduces costs.
Description
Technical field
The utility model belongs to technical field of building construction, relates to a kind of static pressure or hammering concrete precast pipe pile pile bottom post-grouting device.
Background technology
Current construction market adopts static pressure (hammering) concrete precast pipe pile more.When static pressure (hammering) concrete precast pipe pile uses, due to the requirement of prefabricated, transport, lifting, pile strength is very high, but bearing capacity is relatively low; Some stratum is as medium-sand seam, and compacted rear generation concentrated stress, passes in time instantaneously, and the concentrated stress that construction produces dribbles, and causes depression of bearing force; Some stratum needs when not reaching designing pile length to draw Kong Houzai static pressure (hammering) concrete precast pipe pile, and this situation easily produces pile top or soil around pile reset condition is destroyed, and causes bearing capacity not play very well, and single pile bearing capacity declines.In the construction technology of conventional piles, the priming concrete pile hole bottom post-grouting technique extensive use of first pore-forming, but static pressure (hammering) concrete precast pipe pile pile bottom post-grouting construction method is difficult to implement always.
Utility model content
The purpose of this utility model is to provide a kind of static pressure or hammering concrete precast pipe pile pile bottom post-grouting device, and when solving soil plug effect, the low bearing capacity of traditional static pressure or hammering concrete precast pipe pile, higher concrete strength can not play a role, some geological conditions Single Pile supporting capacity can pass the problem that generation reduces gradually in time.
The technical scheme that the utility model adopts comprises precast pile tip, precast pile tip is arranged on bottom prefabricated tubular pile, precast pile tip is provided with the slip casting passage connecting slip casting outlet, Grouting Pipe is arranged on prefabricated tubular pile inside, Grouting Pipe is by the slip casting passage of non retern valve and precast pile tip inside and slip casting outlet, one end oral area of Grouting Pipe and non retern valve is linked together by connector, non retern valve is together with slip casting expanding channels, locator is provided with between prefabricated tubular pile inwall and Grouting Pipe outer wall, locator makes Grouting Pipe can not transverse shifting in prefabricated tubular pile inside, locator can in Grouting Pipe lower slider on the surface, the end face of Grouting Pipe is lower than the end face of pile tube.
Further, described precast pile tip is steel bar concrete material or iron and steel material quality.
Further, described slip casting passage end is several openings, and the corresponding slip casting outlet of each opening, the lower outlet of slip casting outlet is straight mouth or curved mouth.
Further, described connector adopts cast iron pipe collar or steel union; Described Grouting Pipe adopts steel pipe.
The beneficial effects of the utility model to improve single pile bearing capacity, reduces costs.
Accompanying drawing explanation
Fig. 1 is the utility model static pressure or hammering concrete precast pipe pile pile bottom post-grouting apparatus structure schematic diagram.
In figure, 1. precast pile tip, 2. prefabricated tubular pile, be 3. with the slip casting outlet of non retern valve, 4. Grouting Pipe, 5. slip casting passage, 6. connector, 7. locator, 8. non retern valve.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the utility model is described in detail.
The utility model static pressure or hammering concrete precast pipe pile pile bottom post-grouting device comprises precast pile tip 1 as shown in Figure 1, precast pile tip 1 is provided with slip casting passage 5 and slip casting outlet 3 (is installed on precast pile tip 1 after can independently making, or make one with precast pile tip 1), precast pile tip 1 is arranged on bottom prefabricated tubular pile 2, also comprises Grouting Pipe 4 and connector 6.Slip casting exports 3 configurable non retern valves suitable for reading, prevents slurry reflux.
Precast pile tip 1 can be steel bar concrete pile top and also can be iron and steel material quality, appearance and size makes pertinent regulations according to precast pile tip 1 as required and makes, reserve slip casting passage 5 during making and slip casting exports 3 positions, hole, also only ready-made slip casting outlet 3 can be made one with precast pile tip 1; One or more slip casting outlet 3 can be set in slip casting passage 5 lower end according to actual needs, upper end pools an entrance, grout outlet 3 can be straight mouth, also can be prevent grout outlet 3 pile body press down in process meet soil block after be difficult to slip casting, being made into syphon shape makes outlet avoid meeting native face, slip casting passage 5 upper end connects non retern valve 8, and non retern valve 8 is connected with Grouting Pipe 4 by connector 6; Connector 6 can adopt cast iron pipe collar, steel union etc.; Grouting Pipe 4 adopts steel pipe, and Grouting Pipe 4 will be carried out shutoff to upper end, and ensure that the shutoff end face of Grouting Pipe 4 is lower than prefabricated tubular pile 2 end face after being connected at every turn, in order to avoid Grouting Pipe 4 is in piling or (piling) and drop into foreign material and cause gambling to fill in.When prefabricated tubular pile 2 is longer, Grouting Pipe 4 is also longer, for ensureing stability and the integrity of Grouting Pipe 4, Grouting Pipe 4 arranges locator 7, and the outside dimension of locator 7 should be less than the internal diameter of prefabricated tubular pile 2, and to ensure in prefabricated tubular pile 2 free sliding and along Grouting Pipe 4 outer wall free sliding.It is firm that each connecting portion of Grouting Pipe 4 must connect, and itself and slip casting passage 5 departed from after Grouting Pipe 4 completes slip casting, except slip casting passage 5, comprises locator 7 and Grouting Pipe 4 is all taken out from prefabricated tubular pile 2.
Implementation method of the present utility model is as follows:
When static pressure or the construction of hammering concrete precast pipe pile, prefabricated precast pile tip 1 (with slip casting outlet 3) is connected with first segment concrete precast pipe pile and uses cork shutoff slip casting to export 3 end openings, connect Grouting Pipe 4 top shutoff and install locator 7, after static pressure or hammering complete first segment concrete precast pipe pile, again second section concrete precast pipe pile is inserted in after can first connecting second section Grouting Pipe and locating rack, also first can be inserted in and installs after lifting simultaneously.Pile driving construction completes 24 hours post-infusion cement slurries, the water/binder ratio of cement paste is preferably between 0.5 ~ 0.7, and water/binder ratio hour should add water reducing agent, and grouting amount and termination slip casting condition can control by the pertinent regulations of industry standard, Grouting Pipe 4 can be extracted after completing, reuse.
The utility model grouting device, via Grouting Pipe in prefabricated tubular pile 24 by the pile bottom post-grouting (cement injection or other reinforcing slurries) of precast pile tip 1 to static pressure of having constructed (hammering) concrete precast pipe pile, pile end groundwork soil and Pile side soil are reinforced, increase end resistance and the collateral resistance of stake, thus improve bearing capacity of single pile; Eliminate stratum or draw the adverse effect that the reasons such as hole play bearing capacity; The single pile bearing capacity of the stake with the method construction can be matched with pile shaft concrete strength as much as possible, the concrete strength of prefabricated tubular pile can be made full use of; Eliminate the soil plug effect that the construction of uncovered prefabricated tubular pile produces; The impact reducing or eliminate the concentrated construction stress produced instantaneously owing to constructing to pass dissipation in time and cause bearing capacity to reduce; Eliminate building hidden danger, reduce building costs simultaneously.
Method and apparatus of the present utility model can improve the bearing capacity of stake, and reduce cost, easy Laying injection pipe, easy and simple to handle, Grouting Pipe and locating rack can reuse, energy-conserving and environment-protective, saves cost, economic and practical.The concrete tubular pile technique of various soil layer can be applicable to.The utility model is motivated, discards the dross and selects the essential, easy construction, reliable in quality, Grouting Pipe material have multiple choices, with low cost, be convenient to promote, increase social benefit.
The above is only to better embodiment of the present utility model, not any pro forma restriction is done to the utility model, every any simple modification above embodiment done according to technical spirit of the present utility model, equivalent variations and modification, all belong in the scope of technical solutions of the utility model.
Claims (4)
1. a static pressure or hammering concrete precast pipe pile pile bottom post-grouting device, it is characterized in that: comprise precast pile tip (1), precast pile tip (1) is arranged on prefabricated tubular pile (2) bottom, precast pile tip (1) is provided with the slip casting passage (5) connecting slip casting outlet (3), it is inner that Grouting Pipe (4) is arranged on prefabricated tubular pile (2), Grouting Pipe (4) exports (3) by the slip casting passage (5) that non retern valve (8) is inner with precast pile tip (1) with slip casting and is communicated with, Grouting Pipe (4) is linked together by connector (6) with one end oral area of non retern valve (8), non retern valve (8) and slip casting passage (5) link together, locator (7) is provided with between prefabricated tubular pile (2) inwall and Grouting Pipe (4) outer wall, locator (7) makes Grouting Pipe (4) can not transverse shifting in prefabricated tubular pile (2) inside, locator (7) can in Grouting Pipe (4) lower slider on the surface, the end face of Grouting Pipe (4) is lower than the end face of pile tube (2).
2. according to static pressure a kind of described in claim 1 or hammering concrete precast pipe pile pile bottom post-grouting device, it is characterized in that: described precast pile tip (1) is steel bar concrete material or iron and steel material quality.
3. according to static pressure a kind of described in claim 1 or hammering concrete precast pipe pile pile bottom post-grouting device, it is characterized in that: described slip casting passage (5) one end is several openings, corresponding slip casting outlet (3) of each opening, the lower outlet of slip casting outlet (3) is straight mouth or curved mouth.
4. according to static pressure a kind of described in claim 1 or hammering concrete precast pipe pile pile bottom post-grouting device, it is characterized in that: described connector (6) adopts cast iron pipe collar or steel union; Described Grouting Pipe (4) adopts steel pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520032225.5U CN204491617U (en) | 2015-01-19 | 2015-01-19 | A kind of static pressure or hammering concrete precast pipe pile pile bottom post-grouting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520032225.5U CN204491617U (en) | 2015-01-19 | 2015-01-19 | A kind of static pressure or hammering concrete precast pipe pile pile bottom post-grouting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204491617U true CN204491617U (en) | 2015-07-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520032225.5U Expired - Fee Related CN204491617U (en) | 2015-01-19 | 2015-01-19 | A kind of static pressure or hammering concrete precast pipe pile pile bottom post-grouting device |
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| Country | Link |
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| CN (1) | CN204491617U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104594357A (en) * | 2015-01-19 | 2015-05-06 | 赵连平 | Grouting device after statically pressing or hammering concrete precast tubular pile base and grouting method |
| CN106120714A (en) * | 2016-08-22 | 2016-11-16 | 上海岩土工程勘察设计研究院有限公司 | A kind of device improving hollow pile bearing capacity and using method thereof |
| CN110331722A (en) * | 2019-07-26 | 2019-10-15 | 中国兵器工业北方勘察设计研究院有限公司 | A kind of prefabricated pile static pressure construction positioning device and construction method |
| CN110670594A (en) * | 2019-10-22 | 2020-01-10 | 国家电网有限公司 | Installation device of precast concrete tubular pile for overhead transmission line |
-
2015
- 2015-01-19 CN CN201520032225.5U patent/CN204491617U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104594357A (en) * | 2015-01-19 | 2015-05-06 | 赵连平 | Grouting device after statically pressing or hammering concrete precast tubular pile base and grouting method |
| CN106120714A (en) * | 2016-08-22 | 2016-11-16 | 上海岩土工程勘察设计研究院有限公司 | A kind of device improving hollow pile bearing capacity and using method thereof |
| CN110331722A (en) * | 2019-07-26 | 2019-10-15 | 中国兵器工业北方勘察设计研究院有限公司 | A kind of prefabricated pile static pressure construction positioning device and construction method |
| CN110670594A (en) * | 2019-10-22 | 2020-01-10 | 国家电网有限公司 | Installation device of precast concrete tubular pile for overhead transmission line |
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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: 20150722 Termination date: 20170119 |
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| CF01 | Termination of patent right due to non-payment of annual fee |