CN204199274U - The compound pile of the outer pile body intensity adjustable of pile body band enlarged footing in a kind of reserved mud space - Google Patents
The compound pile of the outer pile body intensity adjustable of pile body band enlarged footing in a kind of reserved mud space Download PDFInfo
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- CN204199274U CN204199274U CN201420544995.3U CN201420544995U CN204199274U CN 204199274 U CN204199274 U CN 204199274U CN 201420544995 U CN201420544995 U CN 201420544995U CN 204199274 U CN204199274 U CN 204199274U
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- intensity adjustable
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Abstract
The compound pile of the outer pile body intensity adjustable of pile body band enlarged footing in a kind of reserved mud space, it is characterized in that, the device space storing cement paste and cement-soil is provided with on pile body top, top stud is as the cement mortar of the thick intensity adjustable of 10-50cm or concrete, lower pile body is the cement-soil that 10-50cm is thick, interior pile body is pile for prestressed pipe or preformed pile, interior pile body stake footpath 30-100cm, end band steel major part or reinforced concrete pile major part under interior pile body.Compared with existing punching or drilling hole bored concrete pile technology, dry construction, anhydrous mud and cement-soil pollute, bearing capacity is high, continuous productive process, and speed of application is fast, compared with existing cement-soil strength core composite pile, the force modes of the more identical stake of outer pile body intensity adjustable, construction cost is lower, is applicable to the Foundation Design of China coast city soft foundation.
Description
Technical field
The utility model relates to building foundation engineering field, particularly relates to the compound pile of the outer pile body intensity adjustable of pile body band enlarged footing in a kind of reserved mud space.
Background technology
China coast city is through the economy of large scale construction of three more than ten years, and many cities have entered without ground upstate, as Wenzhou City ratifies through National Bureau of Oceanography, fill out 490 square kilometres of soils at Coastal beach, for building.The soil that this sheet is newly filled out is inhaled and blow on beach at the strand of silt particle in the sea, and two to four meters, hydraulic reclamation layer is thick, and it is lower is the thick water content more than 80% of twenty or thirty rice, the mud of deficient consolidation.At this point on base, building foundation design pile for prestressed pipe, can produce inclined stake, displacement in construction; Design bored pile, near surface 20 meters, the concrete density of perfusion is greater than the unit weight of the mud of deficient consolidation, and normal formation is pregnant maybe cannot be poured into a top mark.
This time one of inventor is once in " cement-soil hard cored " (publication number CN2313959Y) of 1997.12.15 application, to be faced toward from ground soil layer limit water-spray type slurry by agitation driller, while be stirred to deep bearing stratum, replant into preformed pile or pile tube, this stake can produce comparatively high-bearing capacity in soft clay area, but also exist when to plant, a large amount of cement paste and cement-soil excessive, contaminated sites is serious.The most important thing is that this pile-type is as engineering pile, force-mechanism is undesirable, engineering pile near surface part will be combated typhoon the effect of Wind and earthquake, top pile body is obvious by influence of shear force, the necessary bending resistance of design, and the outer pile body soil cement intensity of hard core composite pile is little, so, hard-core cement-earth compound pile became Hebei province, Jiangsu Province, Shandong Province, Yunnan etc. successively and economizes in province-norm after 2005, all explicitly pointed out for foundation treatment engineering.
Utility model content
The utility model provides the compound pile of the outer pile body intensity adjustable of pile body band enlarged footing in a kind of reserved mud space, can in the silly stratum having the thick deficient consolidation of twenty or thirty rice, the force modes of stake that speed of application is fast, bearing capacity is high, the change of mud-less pollution, outer pile strength coincide, and the steady quality of stake, also obvious reduction Foundation Design cost.
Compared with above-mentioned open source information, the utility model innovative point is following 2 points: first, disclosed case institute produces a large amount of cement paste of pollution and cement-soil all belongs to utility, and the present invention first reserves one and deposits enough greatly cement paste and cement-soil device (steel pipe) space above pile; Secondly, innovation is according to stressed section of the difference of engineering pile, to produce the outer pile body of intensity adjustable, and the force modes of the stake that coincide, these 2 are not reported both at home and abroad.
The technical solution adopted in the utility model is: the compound pile of the outer pile body intensity adjustable of pile body band enlarged footing in a kind of reserved mud space, it is characterized in that, the device space storing cement paste and cement-soil is provided with on pile body top, top stud is as the cement mortar of the thick intensity adjustable of 10-50cm or concrete, lower pile body is the cement-soil that 10-50cm is thick, interior pile body is pile for prestressed pipe or preformed pile, interior pile body stake footpath 30-100cm, end band steel major part or reinforced concrete pile major part under interior pile body.
In a kind of reserved mud space, the construction sequence of the compound pile of the outer pile body intensity adjustable of pile body band enlarged footing is as follows:
1. the reserved space storing cement paste and cement-soil in upper soil horizon: hang with crane or pipeline sinking pile machine and exempt from synchronous vibration and hammer into shape single steel pipe or two steel pipe are shaken in underground layer, the soil in steel pipe is got again with long spire drilling tool, or quietly pull out interior pipe, propose outside stake holes, soil is unloaded in vibration.
2. the outer pile body of hypomere cement-soil is made: in steel pipe, pour 1-3m into
3sand or gravel, then put into stirring drill tool, limit water-spray type slurry and compressed air, limit is stirred downwards to entering bearing stratum shape design elevation, then stir while on carry.
3. pile body in implanting: stake end band had the preformed pile of enlarged footing or pile for prestressed pipe to shake with vibrating hammer section by section or static pressure is implanted in cement-soil, until bearing stratum.
4. make pile body on intensity adjustable: upper pile body by implant interior pile body and on gush be filled in preformed pile or the cement paste between pile for prestressed pipe and steel pipe and cement-soil, and to stir through water-spray type slurry first insert 1-3m3 sand in steel pipe or mortar concrete that gravel is formed, now not reach design stake top mark high for outer pile body absolute altitude, then penetration concrete is high to stake top mark, namely completes construction of the present utility model and makes.
The utility model is compared with existing punching or drilling hole bored concrete pile technology, dry construction, anhydrous mud and cement-soil pollute, bearing capacity is high, continuous productive process, and speed of application is fast, compared with existing cement-soil strength core composite pile, the force modes of the more identical stake of outer pile body intensity adjustable, construction cost is lower, is applicable to the Foundation Design of China coast city soft foundation.
Accompanying drawing explanation
Fig. 1 is the utility model embodiment generalized section.
Drawing illustrates: 1 basement bottom board, 2 layers of sand, 3 cushion caps, pile body in 4 pile for prestressed pipe, the outer pile body of 5 concrete, the outer pile body of 6 cement mortar, 7 muds, the outer pile body of 8 cement-soils, pile body enlarged footing in 9,10 argillic horizons, 11 gravel layers.
Detailed description of the invention
The construction making step of an exemplary embodiments of the present utility model is as follows:
1. hang with crane and exempt from synchronous vibration hammer and double-jacket tube shaken layer of sand (2) with mud (7) layer, space 1-1.4cm between outer and inner tube, quietly again pull out interior pipe, when in managing, native frictional resistance is greater than native unit weight, the soil body can not fall down, during as fallen under managing the meeting of interior native moisture content height, flap valve is established in interior pipe lower end, and when above carrying interior pipe, flap valve is closed, interior pipe lift-off stake position vibrates again unloads soil, is put back in the outer tube buried in the ground by interior pipe again.
2. stirring drill tool is put into steel pipe, from base, hole water-spray type slurry and compressed air, limit stirs the soil body downwards through argillic horizon (10) until enter gravel layer (11), and stirs 1-2 time again, then is taken out by drilling tool.
3. pile body (4) in the pile for prestressed pipe of enlarged footing (9) stake end band is had to shake in cement-soil (8) with vibrating hammer section by section, until gravel layer (11).
4. gush on because implanting pile body (4) and enlarged footing (9) in pile for prestressed pipe be filled in cement paste between pile for prestressed pipe and steel pipe and cement-soil outward pile body absolute altitude do not reach that to design stake top mark high, then pour into cement mortar (6) or concrete (5) is high to stake top mark, namely complete construction of the present utility model and make.
5., after completing all making of the present utility model, continue by prior art upwards construction bearing platform (3) and basement bottom board (1).
Claims (1)
1. the compound pile of the outer pile body intensity adjustable of pile body band enlarged footing in a reserved mud space, it is characterized in that, the device space storing cement paste and cement-soil is provided with on pile body top, top stud is as the cement mortar of the thick intensity adjustable of 10-50cm or concrete, lower pile body is the cement-soil that 10-50cm is thick, interior pile body is pile for prestressed pipe or preformed pile, interior pile body stake footpath 30-100cm, end band steel major part or reinforced concrete pile major part under interior pile body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420544995.3U CN204199274U (en) | 2014-09-22 | 2014-09-22 | The compound pile of the outer pile body intensity adjustable of pile body band enlarged footing in a kind of reserved mud space |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420544995.3U CN204199274U (en) | 2014-09-22 | 2014-09-22 | The compound pile of the outer pile body intensity adjustable of pile body band enlarged footing in a kind of reserved mud space |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204199274U true CN204199274U (en) | 2015-03-11 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420544995.3U Expired - Fee Related CN204199274U (en) | 2014-09-22 | 2014-09-22 | The compound pile of the outer pile body intensity adjustable of pile body band enlarged footing in a kind of reserved mud space |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204199274U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106284330A (en) * | 2015-06-05 | 2017-01-04 | 温州长城基础工程有限公司 | A kind of intensity adjustable strength core composite pile and making apparatus thereof and construction method |
| CN113026745A (en) * | 2021-03-01 | 2021-06-25 | 中部城市建设有限公司 | Construction method of prefabricated pile body of carrier pile |
-
2014
- 2014-09-22 CN CN201420544995.3U patent/CN204199274U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106284330A (en) * | 2015-06-05 | 2017-01-04 | 温州长城基础工程有限公司 | A kind of intensity adjustable strength core composite pile and making apparatus thereof and construction method |
| CN113026745A (en) * | 2021-03-01 | 2021-06-25 | 中部城市建设有限公司 | Construction method of prefabricated pile body of carrier pile |
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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: 20150311 Termination date: 20160922 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |