CN1109128A - Process for rotating-spraying composite piles - Google Patents
Process for rotating-spraying composite piles Download PDFInfo
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- CN1109128A CN1109128A CN 94105409 CN94105409A CN1109128A CN 1109128 A CN1109128 A CN 1109128A CN 94105409 CN94105409 CN 94105409 CN 94105409 A CN94105409 A CN 94105409A CN 1109128 A CN1109128 A CN 1109128A
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- stake
- pile
- reinforcement
- churning
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Abstract
The construction method for reinforcing foundation based on chemical churning pile features that concrete grout is sprayed into loose pile foundation and prefabricated reinforced concrete pile in the form of bamboo joints or screw is put in it after mixing to form a composite pile. Its advantages include high bearing power and drawing-out resistance, and less consumption of steel and concrete.
Description
The present invention relates to method for processing foundation, particularly a kind of job practices of churning pile consolidated subsoil.
In capital construction, in order to reinforce soft foundation, improve its supporting capacity, in recent years on the basis of boring slip casting with consolidated subsoil, formed the churning "forming column, promptly the churning equipment that revolves hole stirring-head and shotcrete pipe with band unscrews the earth at pile place on pending ground, the slurry of spray simultaneously, make slurry and the earth mix that unscrews, treat to become after it solidifies the higher rotary churning pile of intensity.This rotary churning pile can only limited ground consolidated subsoil.In order further to improve the intensity of rotary churning pile, strengthen its supporting capacity, the disclosed churning "forming column of Chinese patent CN1071724 " method for processing foundation " is to unscrew earth in the hole with churning equipment, while next isolated tube in the stake hole, the churning sandstone that loosens the soil outside isolated tube then, the air placed concrete slurry is mentioned isolated tube then in isolated tube, after treating concrete setting, promptly be formed with the rotary churning pile that concrete is strengthened the stake heart.But construction results shows thisly have the bearing capacity of the rotary churning pile of a heart, uplift resistance still lower, and pile strength is also not high.
The purpose of this invention is to provide a kind of job practices with pile strength height, rotary jet grouting pile in foundation stabilization that supporting capacity is bigger.
To be the churning equipment that revolves hole stirring-head and shotcrete pipe with band on the soil base unscrew the earth at pile place to foundation reinforcement method of the present invention, while air placed concrete slurry, make concrete slurry and the earth mix that unscrews, before the concrete slurry solidifies, prefabricated steel concrete is strengthened stake and inserts, treat slurry solidify after with it one become composite pile.
Foundation reinforcement method of the present invention is easy to use, and can improve the pile strength of rotary churning pile and the vertical plane bearing capacity of stake greatly.Compare with all steel rib concrete pile of identical vertical plane bearing capacity, can save various soils bases such as steel and concrete, and suitable sandy soil, loam and clay greatly.
For ease of the soil that unscrews that solidifies preceding concrete slurry and mix is inserted in steel concrete reinforcement stake, steel concrete reinforcement stake can be prefabricated into cone or cross section is triangle, the square and polygonal cone more than four limits.
Strengthen the adhesive power and the uplift resistance of stake for improving steel concrete, also steel concrete reinforcement stake can be prefabricated into to have on the conical surface has the stake of the screw type of Luo Xuan fin or groove on the stake of the slub type of ansa or annular groove or the conical surface.
Below in conjunction with drawings and Examples the present invention is described.
Fig. 1 is the churning composite pile schematic diagram that forms with method for processing foundation construction of the present invention.
Fig. 2 is that churning composite pile embodiment side cone slub type steel concrete is strengthened the stake schematic diagram among the present invention.
Fig. 3 is the vertical view of Fig. 2.
Fig. 4 is that screw type steel concrete is strengthened the stake schematic diagram.
Fig. 5 is the vertical view of Fig. 4.
Embodiment, with reference to Fig. 1, the stake position of selecting on the mollisol ground 3 that needs reinforcement unscrews the earth in the stake hole 4 with churning equipment, simultaneously the earth mix pile soil 2 in air placed concrete slurry and the stake hole 4.Exert pressure with vibration then and prefabricated steel concrete is strengthened stake 1 insert in the stake soil 2 of ot-yet-hardened, treat that promptly strengthening stake 1 with steel concrete after stake soil 2 solidifies becomes one and become and revolve compound spray stake.
With reference to Fig. 2, Fig. 3, it can be the cone that ansa 5 is arranged on its conical surface 6 that the steel concrete of inserting in the churning composite pile is strengthened stake 1, and its cross section is a quadrangular section 7, and concrete strengthens in the stake 1 reinforcing cage 8 being arranged.
With reference to Fig. 4, Fig. 5, it can be the screw type stake that Luo Xuan groove 9 is arranged on its conical surface 6 that the steel concrete of inserting in the churning composite pile is strengthened stake 1, and its cross section is a circular cross-section 10, and it is reinforcing cage 8 that concrete is strengthened in the stake 1.
Claims (5)
1, a kind of foundation reinforcement method promptly revolves the hole with churning machinery on the soil base and the churning slurry solidifies pile, thereby the job practices of consolidated subsoil is characterized in that:
The slurry of a, said churning is the concrete slurry,
B, before inward turning whitewashing material in stake hole solidifies, prefabricated reinforcement is inserted, treat slurry solidify after with it one become composite pile.
2, foundation reinforcement method according to claim 1 is characterized in that the prefabricated reinforcement stake of using in the said reinforcement means is the cone reinforced concrete pile.
3, foundation reinforcement method according to claim 1 is characterized in that the prefabricated reinforcement stake of using in the said reinforcement means is that cross section is polygonal cone reinforced concrete pile.
4,, it is characterized in that the cone reinforced concrete pile that uses in the said reinforcement means is the slub type stake that ansa is arranged on the conical surface according to claim 2 or 3 described foundation reinforcement methods.
5,, it is characterized in that the cone reinforced concrete pile that uses in the said reinforcement means is the screw type stake that the Luo Xuan groove is arranged on the conical surface according to claim 2 or 3 described foundation reinforcement methods.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94105409 CN1043068C (en) | 1994-05-12 | 1994-05-12 | Process for rotating-spraying composite piles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94105409 CN1043068C (en) | 1994-05-12 | 1994-05-12 | Process for rotating-spraying composite piles |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1109128A true CN1109128A (en) | 1995-09-27 |
| CN1043068C CN1043068C (en) | 1999-04-21 |
Family
ID=5032045
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94105409 Expired - Fee Related CN1043068C (en) | 1994-05-12 | 1994-05-12 | Process for rotating-spraying composite piles |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1043068C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100371545C (en) * | 2005-12-16 | 2008-02-27 | 张国梁 | Reversed construction method for building |
| CN111809611A (en) * | 2020-08-24 | 2020-10-23 | 黑龙江辰午建筑工程有限公司 | Construction method of jet grouting prefabricated composite pile |
| CN112227360A (en) * | 2020-09-25 | 2021-01-15 | 福建新华夏建工有限公司 | High-pulling-resistance-strength foundation reinforcing device for rotary jet drilling machine |
| CN112726568A (en) * | 2020-12-29 | 2021-04-30 | 中铁四局集团有限公司 | Method for reinforcing silt sand layer |
-
1994
- 1994-05-12 CN CN 94105409 patent/CN1043068C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100371545C (en) * | 2005-12-16 | 2008-02-27 | 张国梁 | Reversed construction method for building |
| CN111809611A (en) * | 2020-08-24 | 2020-10-23 | 黑龙江辰午建筑工程有限公司 | Construction method of jet grouting prefabricated composite pile |
| CN112227360A (en) * | 2020-09-25 | 2021-01-15 | 福建新华夏建工有限公司 | High-pulling-resistance-strength foundation reinforcing device for rotary jet drilling machine |
| CN112227360B (en) * | 2020-09-25 | 2021-10-29 | 福建新华夏建工有限公司 | High-pulling-resistance-strength foundation reinforcing device for rotary jet drilling machine |
| CN112726568A (en) * | 2020-12-29 | 2021-04-30 | 中铁四局集团有限公司 | Method for reinforcing silt sand layer |
| CN112726568B (en) * | 2020-12-29 | 2022-04-19 | 中铁四局集团有限公司 | Method for reinforcing silt sand layer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1043068C (en) | 1999-04-21 |
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| C14 | Grant of patent or utility model | ||
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Free format text: CORRECT: CO-PATENTEE TO: LING GUANGRONG; WANG ENYUAN |
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| CP01 | Change in the name or title of a patent holder |
Co-patentee after: Ling Guangrong Co-patentee after: Wang Enyuan |
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| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |