CN202164598U - Precast impacted-expanded pile - Google Patents
Precast impacted-expanded pile Download PDFInfo
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- CN202164598U CN202164598U CN2011201336543U CN201120133654U CN202164598U CN 202164598 U CN202164598 U CN 202164598U CN 2011201336543 U CN2011201336543 U CN 2011201336543U CN 201120133654 U CN201120133654 U CN 201120133654U CN 202164598 U CN202164598 U CN 202164598U
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Abstract
The utility model discloses a precast impacted-expanded pile, which comprises a hollow precast pile and an expanded-section pile at pile bottom, wherein at least two grout outlet holes are arranged on the precast pile; concrete forms a pile body impacted-expanded section on the precast pile through the hollow precast pile after passing through the grout outlet holes; a concrete injection pipe is formed in the precast pile; the hollow precast pile is put in the foundation; the concrete is injected into the precast pile; the outer diameter of the pile body impacted-expanded section is controlled by controlling the injection pressure according to the characters of foundation soil; therefore, the formed precast impacted-expanded pile can be organically combined with the surrounding foundation soil layer, which not only can increase the contact area between the precast impacted-expanded pile and the foundation soil, but is also effectively beneficial to the characters of the foundation soil according to the precast impacted-expanded pile manufactured through the characters of the foundation soil so as to greatly improve the bearing capacity of the precast impacted-expanded pile. The concrete can be injected in the hollow precast pile at different pressures through the precast impacted-expanded pile according to the characters of the foundation soil, so that the concrete flows out of the grout outlet holes to form the pile body impacted-expanded sections having different outer diameters. Therefore, the precast impacted-expanded pile is suitable for foundations having different characters.
Description
Technical field
The utility model belongs to the pile foundation field, relates in particular to a kind of prefabricated extruded and extended pile.
Background technology
Pile foundation engineering is one of important component part in the field of civil engineering, and engineering piles form commonly used at present mainly contains preformed pile and castinplace pile two big classifications.Wherein preformed pile comprises steel pipe pile, and forms such as precast square pile, PHC pile tube and pre-stress hollow square pile are characterized in the prefabricated shaping postposition of engineering piles is gone into the soil body, utilizes the stake and the acting in conjunction of soil that resistance to compression, resistance to plucking, bending resistance or horizontal bearing capacity are provided.Castinplace pile comprises forms such as bored pile, tube-sinking cast-in-situ pile, is characterized at first in geotechnical body, can improving bearing capacity of pile foundation with soil body contact surface through enlarging the stake end, and for example the limb disc expanded bore pile just belongs to the reaming stake of this type of character.Brill, borehole expanded bore pile and immersed tube (static pressure and knocking) compaction pile, all only squeezed or rammer expansion to the stake end.The former is concrete perfusion through drill-over or after scraping out the hole expansion end; The latter inserts anhydrous concrete or building waste for immersed tube arrives projected depth, and interior pipe static(al) extruding of process or inner tamping tube impact and form bellend, and they pass through the bearing capacity and the distortion that reduces pile body of the simple expansion raising stake of end.The contact surface of the pile body and the soil body is for facing directly but not curved surface, therefore, no matter is that the raising of side friction and end resistance all is local, limited.In the stratum of flusch; Possesses the weak bottom hardening gradually in diadactic structure characteristic-top between the soil layer; And array time diadactic structure can be divided in diadactic structure inside; Form the stratum soft and hard alternation of inside configuration, the static sounding test curve that can measure soil layer through checkout equipment of this type soil, this soil layer construction extensively exists in the proluvial landform unit.Above-mentioned extruded and extended pile fails to effectively utilize the architectural feature of soil layer nature.
Summary of the invention
The purpose of the utility model is to overcome above-mentioned deficiency a kind of prefabricated extruded and extended pile is provided, and can combine and be beneficial to the ground soil characteristics effectively, significantly improves the load-carrying properties of prefabricated extruded and extended pile.
The purpose of the utility model realizes through following technical scheme:
A kind of prefabricated extruded and extended pile; Comprise preformed pile, stake end expanding reach stake that hollow is set; Two slurry outlets are set on the preformed pile at least, and concrete passes through the preformed pile of hollow through on preformed pile, forming squeezed section of pile body behind the slurry outlet, in preformed pile, forms the concrete grouting pipe.
Above-mentioned prefabricated extruded and extended pile, said slurry outlet is vertical with preformed pile.
Above-mentioned prefabricated extruded and extended pile is provided with two annular slurry outlets at least on the said preformed pile, the preformed pile on slurry outlet top is connected through reinforcing bar with the preformed pile of slurry bottom, hole.
Above-mentioned prefabricated extruded and extended pile, the external diameter that said pile body is squeezed section is identical.
Above-mentioned prefabricated extruded and extended pile, the external diameter size interval that said pile body is squeezed section is provided with.
It is big that above-mentioned prefabricated extruded and extended pile, the external diameter that said pile body is squeezed section become from top to bottom successively.
Above-mentioned prefabricated extruded and extended pile, the external diameter that said pile body is squeezed section diminishes from top to bottom successively.
Adopt technique scheme; The utility model has following advantage: the preformed pile of hollow is put into ground, and concrete perfusion in preformed pile is according to the ground soil characteristics; Control the size of the external diameter of squeezed section of pile body through the control grouting pressure; The prefabricated extruded and extended pile that forms so just combines with on every side foundation soil, has not only increased the contact area of prefabricated extruded and extended pile and foundation soil, and has been the prefabricated extruded and extended pile of making according to the ground soil characteristics; Be beneficial to the ground soil characteristics effectively, significantly improved the bearing capacity of prefabricated extruded and extended pile.The utility model can adopt different pressures concrete perfusion in the preformed pile of hollow according to the ground soil characteristics, and concrete flows out from slurry outlet, squeezed section of the pile body of formation various outer diameter.The utility model can be fit to the ground of different qualities.
Figure of description
Fig. 1 is the structural representation of the utility model.
Fig. 2 is the A-A sectional drawing of Fig. 1.
Fig. 3 is second kind of structural representation of the utility model.
Fig. 4 is the third structural representation of the utility model.
Fig. 5 is the 4th kind of structural representation of the utility model.
Fig. 6 is the 5th kind of structural representation of the utility model.
Fig. 7 is the A-A sectional drawing of Fig. 6.
The specific embodiment
Like Fig. 1 to a kind of prefabricated extruded and extended pile shown in Figure 7; Comprise preformed pile 2, stake end expanding reach stake 1 that hollow is set; Two slurry outlets 4 are set on the preformed pile 2 at least, and concrete forms squeezed section 3 of pile body through the preformed pile 2 of hollow on preformed pile behind slurry outlet 4, in preformed pile, form concrete grouting pipe 6; Said slurry outlet 4 is vertical with preformed pile 2.
As depicted in figs. 1 and 2, the external diameter that pile body is squeezed section 3 is identical, and squeezed section external diameter is the distance of squeezed section outermost edge to pile center's axis.
Shown in Fig. 2 and 3, the external diameter that said pile body is squeezed section 3 diminishes from top to bottom successively.
Like Fig. 2 and shown in Figure 4, it is big that the external diameter that said pile body is squeezed section 3 becomes from top to bottom successively.
Like Fig. 2 and shown in Figure 5, external diameter size interval that said pile body is squeezed section 3 is provided with, and promptly the external diameter of squeezed section of pile body is big, and the adjacent squeezed section external diameter of pile body in bottom is just little, becomes big downwards again, setting so at interval.
Like Fig. 6 and shown in Figure 7, two slurry outlets 4 are set on the preformed pile of the utility model at least, slurry outlet is annular, the preformed pile on slurry outlet 4 tops is connected through reinforcing bar 5 with the preformed pile of slurry bottom, hole.
Slurry outlet on Fig. 3, Fig. 4 and Fig. 5 also can be arranged to annular, and the preformed pile on slurry outlet 4 tops is connected through reinforcing bar 5 with the preformed pile of slurry bottom, hole.
The manufacturing process of the utility model is following: the ground of preformed pile being put into regulation; According to the ground soil characteristics; Adopt different pressures concrete perfusion in the preformed pile of hollow, concrete flows out from slurry outlet, owing to the external diameter of squeezed section of the different formed pile bodies of pressure is also different.The utility model can be fit to the ground of different qualities.
Claims (7)
1. prefabricated extruded and extended pile; Comprise preformed pile (2), stake end expanding reach stake (1) that hollow is set; It is characterized in that: two slurry outlets (4) are set on the preformed pile (2) at least; Concrete forms squeezed section of pile body (3) through the preformed pile (2) of hollow on preformed pile behind slurry outlet (4), in preformed pile, form concrete grouting pipe (6).
2. prefabricated extruded and extended pile according to claim 1 is characterized in that: said slurry outlet (4) is vertical with preformed pile (2).
3. prefabricated extruded and extended pile according to claim 1 and 2 is characterized in that: two annular slurry outlets (4) are set on the said preformed pile at least, and the preformed pile on slurry outlet (4) top is connected through reinforcing bar (5) with the preformed pile of slurry bottom, hole.
4. prefabricated extruded and extended pile according to claim 3 is characterized in that: the external diameter of said pile body squeezed section (3) is identical.
5. prefabricated extruded and extended pile according to claim 3 is characterized in that: the external diameter size interval of said pile body squeezed section (3) is provided with.
6. prefabricated extruded and extended pile according to claim 3 is characterized in that: the external diameter of said pile body squeezed section (3) becomes big from top to bottom successively.
7. prefabricated extruded and extended pile according to claim 3 is characterized in that: the external diameter of said pile body squeezed section (3) diminishes from top to bottom successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201336543U CN202164598U (en) | 2011-04-29 | 2011-04-29 | Precast impacted-expanded pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201336543U CN202164598U (en) | 2011-04-29 | 2011-04-29 | Precast impacted-expanded pile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202164598U true CN202164598U (en) | 2012-03-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201336543U Expired - Lifetime CN202164598U (en) | 2011-04-29 | 2011-04-29 | Precast impacted-expanded pile |
Country Status (1)
| Country | Link |
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| CN (1) | CN202164598U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103015414A (en) * | 2012-12-31 | 2013-04-03 | 建华建材（中国）投资有限公司 | Precast concrete post grouting pile and grouting process |
| CN104975595A (en) * | 2014-04-13 | 2015-10-14 | 季德樑 | Strengthened pile |
-
2011
- 2011-04-29 CN CN2011201336543U patent/CN202164598U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103015414A (en) * | 2012-12-31 | 2013-04-03 | 建华建材（中国）投资有限公司 | Precast concrete post grouting pile and grouting process |
| CN103015414B (en) * | 2012-12-31 | 2016-04-13 | 建华建材投资有限公司 | A kind of precast concrete post grouting pile and grouting process |
| CN104975595A (en) * | 2014-04-13 | 2015-10-14 | 季德樑 | Strengthened pile |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120314 |
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| CX01 | Expiry of patent term |