CN203256736U - Composite pile with strongly-stirred soil implanted with rigid body and embedded with hard bearing layer - Google Patents
Composite pile with strongly-stirred soil implanted with rigid body and embedded with hard bearing layer Download PDFInfo
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- CN203256736U CN203256736U CN 201220698186 CN201220698186U CN203256736U CN 203256736 U CN203256736 U CN 203256736U CN 201220698186 CN201220698186 CN 201220698186 CN 201220698186 U CN201220698186 U CN 201220698186U CN 203256736 U CN203256736 U CN 203256736U
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Abstract
The utility model discloses a composite pile with strongly-stirred soil implanted with a rigid body and embedded with a hard bearing layer. The strong stirring function of the specially-made dedicated pile planting machine is used for drilling and stirring a soil body, and drilling, stirring and grouting are carried out at the same time so as to form cement soil slurry. Then, the rigid body is implanted into the cement soil slurry, and the composite pile with cement soil wrapping the rigid body is formed after condensation. According to the composite pile with the strongly-stirred soil implanted with the rigid body and embedded with the hard bearing layer, the specially-made strong stirring pile machine is used for stirring the soil body so as to form flowing cement slurry soil, in addition, a drill bit of the bottom of the pile has the drilling function on a common bearing layer, therefore, the bottom of the pile can enter the hard bearing layer and even enter a bedrock by a certain depth according to the design requirements, the rigid body is implanted, and a composite pressure-bearing-resistant and pulling-resistant pile body is formed after condensation. The composite pile with the strongly-stirred soil implanted with the rigid body and embedded with the hard bearing layer has the advantages of being convenient in pile forming, strong in applicability, fast in construction speed, good in quality, high in bearing force, low in construction cost, free of soil squeezing and the like, and slurry is not transported to the outside to pollute the environment.
Description
Technical field
The utility model relates to a kind of common soil layer that is applicable to, and is used for the novel pile body of pressure-bearing and resistance to plucking---and strong stirring soil is implanted rigid body and is embedded hard bearing stratum composite pile.This novel pile body can be used as pressure bearing pile or the uplift pile in each field of civil engineering, has that pile is convenient, cost is low, pile quality is reliable, speed of application is fast, affect surrounding enviroment without soil compaction, and transports outward the advantage of contaminated environment without mud.
Background technology
Each field of the civil engineerings such as construction work, hydraulic engineering, road and bridge engineering, bored pile is the most frequently used pile body, it has the advantages such as construction technology maturation, equipment is simple, applicability is strong, but also have the shortcomings such as cost height, bore forming complex process, quality control requirement height, especially drilled pile process using mud off technology needs to become mud to transport outward processing soil body drilling.Contaminated environment is processed in the outward transport of drilled pile mud, is city problem anxious to be resolved, directly jeopardizes popularization and the utilization of conventional borehole castinplace pile.How seeking not need the piling technique of mud outward transport is one of R﹠D direction of current geotechnical engineering.
Squeezing into or be pressed into Prefabricated Reinforced Concrete Square Pile or pile tube in each field of civil engineering also is present the most frequently used pile body.This stake has the advantages such as reliable in quality, speed of application is fast, cost is low.But this is a kind of Squeezing Soil Pile, and larger on the periphery impact in the pile, especially in the city construction, because soil compaction jeopardizes peripheral path, underground utilities and safety of building, this unfavorable factor has limited the application of the Squeezing Soil Piles such as Prefabricated Reinforced Concrete Square Pile or pile tube.In addition, squeeze into or be pressed into preformed pile also exist some soil layers can't or the very difficult pile problem that puts in place, it is of far-reaching significance that therefore research and development can overcome the new pile body of above-mentioned conventional piles shortcoming.
Above-mentioned various pile body, because soil nature is poor, and pile side friction is very low, how to improve pile side friction, the bearing capacity that increases stake also is the problem that is worth solution in coastal deep soft soil.
Strong stirring soil interplantation rigid body of the present invention embeds hard bearing stratum composite pile technology and develops under this background just.This new technology has that pile is convenient, applicability is strong, pile quality is reliable, speed of application is fast, cost is low, bearing capacity is high, without soil compaction and need not the advantage such as mud outward transport processings, the while has also solved the low problem of deep soft soil Lateral frictional resistance.This new technology apply the needs that meet current urban sustainable development, also to have saved great amount of investment of far-reaching significance for engineering construction.
Summary of the invention
The utility model is a kind of novel pile body that is applicable to each field of civil engineering, has solved the variety of issue that above-mentioned traditional pile body in use exists.
A kind of strong stirring soil interplantation rigid body embeds hard bearing stratum composite pile, comprises the cement-soil of rigid body and wrapping portion rigid body, and described rigid body is not embedded hard bearing stratum by the end that cement-soil wraps up.
Soil body top is Soft Soil Layer, and the bottom is hard bearing stratum, and cement-soil is arranged in Soft Soil Layer, and the cement-soil diameters is between 600～1800mm, and cement additive ratio is 15%～25%; When entering hard bearing stratum according to designing requirement needs rigid body lower end, can directly by drilling or pressure rigid body be embedded into certain depth in the hard bearing stratum, hard bearing stratum can be hardpan.
When composite pile requires to enter hard bearing stratum depth greatly even enters horizon d according to design bearing capacity, advance to reach the designing requirement degree of depth by the keyhole machine drill, rigid body is implanted put in place.The rigid body of implanting in the hard bearing stratum is wrapped with the reinforcement cement-soil, strengthens the cement-soil diameter less than the cement-soil diameter, and greater than rigid body diameter 100～200mm, cement additive ratio is 20%～40%.
When the soil nature of soil body top and the bottom soil layer is consistent, but the difficulty that puts in place is directly squeezed into or inserted to rigid body, but the drilling rod of whole process using minor diameter stir and creep into, then rigid body is implanted and is put in place.Wherein the large 100～500mm of cement-soil diameter specific rigidity body diameter of rigid body is wrapped up in the composite pile top and the bottom, and cement additive ratio is 20%～30%.
Compound pile body can be used as the stressed stake of pressure-bearing, also can be used as the stressed stake of resistance to plucking.
The technical scheme that its technical problem that solves the utility model adopts is to utilize the strong stirring of new novel pile driver outfit of researching and developing and pierce hard bearing stratum function, the general common soil body is carried out strong stirring, inject simultaneously cement grout, make the soil body form the mobile shape of cement-soil, this cement mixing pile diameter becomes according to soil mass property, if Soft Soil Layer namely adopts large diameter stirring size, make the small diameter rigid body of itself and interplantation form compound pile body.Utilize cheap cement-soil to enlarge the peripheral diameter of pile body, increase surface area and the pile side friction of pile body, solve the low problem of weak soil frictional force, reach the effect that increases pile capacity, the anti-bearing strength of pile side friction and pile body (mainly being provided by rigid body) is complementary.It is better that soil body proterties is passed through in stake, can reduce the agitation pile diameter, makes a machine provide the strong stirring function can stir smoothly the soil body, and it stirs diameter can satisfy the pile side friction requirement after forming compound pile body.The drill bit of the head zone of the strong stirring drilling rod of this special stake machine and the diameter of stirring vane and the rigid body of implantation are complementary.The drill bit of this less diameter and stirring vane are conducive to pile body and enter hard bearing stratum even horizon d.When the stake machine drill advance to stir enter hard bearing stratum (basement rock) and put in place after, injects certain high strength setting and harden slurries, make implantation rigid body embedding bearing stratum can better in conjunction with, reach requirement of strength to guarantee compound bearing capacity of pile tip.
The rigid body of this strong stirring soil interplantation generally is common prefabricated reinforced concrete thin-walled, heavy wall or ring pile tube, and Prefabricated Reinforced Concrete Square Pile or hollow square pile also can be steel pipe piles.
The utility model utilizes special strong stirring stake machine the soil body to be stirred the cement puddled soil that forms the shape that flows, and stake subdrilling head possesses the function of creeping into to common hard bearing stratum, can enter certain depth in hard bearing stratum even the basement rock by designing requirement at the bottom of making, then implant rigid body, the anti-pressure-bearing that the rear formation of condensing is compound and resistance to plucking pile body.This novel pile body has that pile is convenient, applicability is strong, speed of application is fast, quality is good, bearing capacity is high, cost is low, without soil compaction and without advantages such as mud outward transport contaminated environment.
Description of drawings
Fig. 1 is the unitary construction figure of composite pile among the utility model embodiment 1;
Fig. 2 is the sectional view along A-A among Fig. 1;
Fig. 3 is the constructional drawing that composite pile embeds hard bearing stratum among the utility model embodiment 2;
Fig. 4 is the sectional view along B-B among Fig. 3;
Fig. 5 is the sectional view along C-C among Fig. 3;
Fig. 6 is composite pile pile body structure figure among the utility model embodiment 3;
Fig. 7 is the sectional view along D-D among Fig. 6;
Fig. 8 is the force-mechanism figure of the utility model composite pile.
The specific embodiment
Embodiment 1
Shown in Fig. 1-2, a kind of strong stirring soil interplantation rigid body embeds hard bearing stratum composite pile, adopts special special-purpose pile driver to utilize its strong stirring function that the soil body is stirred, and the limit is crept into while stirring slip casting and formed soil cement slurry, then implant rigid body 1, rear formation composite pile condenses.
When soil body top is thicker Soft Soil Layer, the bottom is hardpan, and simultaneously designing requirement pile top bearing stratum is this bottom hardpan, but it is not high that compound pile body is entered the depth requirements of hardpan.During construction, at first adopting pile driver that Soft Soil Layer is carried out large diameter stirring creeps into, simultaneously slip casting forms soil cement slurry, then implant rigid body 1, because design is not high to the depth requirements that compound pile body enters hardpan, can be directly by drilling or pressure rigid body 1 be embedded into and reaches certain depth in the hardpan, the condense composite pile of rear formation cement-soil 2 parcel rigid bodies 1 of soil cement slurry.
Wherein the diameter D1 scope of cement-soil 2 is between 600～1800mm, draining situation and implantation rigid body bearing strength according to Soft Soil Layer, determine that near rigid body 1 and the suitable principle of 2 frictional resistances of cement-soil the cement additive ratio of cement-soil 2 is between 15%～25% according to cement-soil 2 appearance frictional resistances.The diameter D of rigid body 1 is generally between 300～800mm.
Shown in Fig. 3-5, when soil body top is thicker Soft Soil Layer, the bottom is hard bearing stratum or horizon d, and it is large even enter horizon d that the designing requirement pile top enters this hard bearing stratum depth.During construction, the construction sequence of Soft Soil Layer is identical with embodiment 1, when pile driver creeps into to the Soft Soil Layer bottom, reduce to stir size, the drill bit continuation is crept into to hard bearing stratum and is stirred to desired depth, inject simultaneously another kind of cement paste, implant rigid body 1, strengthen the composite pile of cement-soil 2 parcel rigid bodies 1 in cement-soil 3 and the Soft Soil Layer in the hard bearing stratum of rear formation that condenses.
Wherein identical among the parameter of cement-soil 2 and the embodiment 1 strengthen the diameter D2 of cement-soil 3 less than cement-soil 2 diameter D1, but greater than rigid body 1 diameter 100～200mm, cement additive ratio is 20%～40%.
Shown in Fig. 6-7, all better when the soil nature of soil body top and the bottom soil layer, put in place at need but adopt the method for directly driving piles to enter, therefore adopt omnidistance minor diameter to stir implantation.
During construction, pile driver creeps into from upper soil horizon and is stirred to bottom soil layer desired depth, then implants rigid body 1, the composite pile of the rear formation cement-soil 2 parcel rigid bodies that condense.
The diameter D3 scope of cement-soil 2 is between 400～1300mm, and cement additive ratio is 20%～30%, is specifically determined by soil nature situation, the bearing capacity size of creeping into power, designing requirement.
Certainly the cement-soil that enters the hard bearing stratum in bottom also can be changed to the reinforcement cement-soil.
Except above-mentioned embodiment, the present invention can also have similar other embodiment, and all employings are equal to replaces or technical scheme that equivalent transformation forms, all drops on the claimed scope of the present invention.
Claims (5)
1. a strong stirring soil interplantation rigid body embeds hard bearing stratum composite pile, it is characterized in that:
The cement-soil (2) that comprises rigid body (1) and wrapping portion rigid body (1), described rigid body (1) are not embedded hard bearing stratum by an end of cement-soil (2) parcel.
2. strong stirring soil interplantation rigid body according to claim 1 embeds hard bearing stratum composite pile, it is characterized in that: soil body top is Soft Soil Layer, the bottom is hard bearing stratum, and described cement-soil (2) is arranged in Soft Soil Layer, and cement-soil (2) diameters is between 600～1800mm; Hard bearing stratum is implanted in described rigid body (1) lower end.
3. strong stirring soil interplantation rigid body according to claim 2 embeds hard bearing stratum composite pile, it is characterized in that: the rigid body of the hard bearing stratum of described implantation is wrapped with strengthens cement-soil (3), strengthen cement-soil (3) diameter less than cement-soil (2) diameter, greater than rigid body (1) diameter 100～200mm.
4. strong stirring soil interplantation rigid body according to claim 1 embeds hard bearing stratum composite pile, it is characterized in that: the soil nature of soil body top and the bottom soil layer is consistent, cement-soil (2) diameter of composite pile top and the bottom parcel rigid body is identical, and the large 100～500mm of specific rigidity body (1) diameter.
5. strong stirring soil interplantation rigid body according to claim 1 embeds hard bearing stratum composite pile, and it is characterized in that: described rigid body (1) is prefabricated reinforced concrete pile tube, ring pile tube, square pile, hollow square pile or various forms steel pipe pile.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220698186 CN203256736U (en) | 2012-12-11 | 2012-12-11 | Composite pile with strongly-stirred soil implanted with rigid body and embedded with hard bearing layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220698186 CN203256736U (en) | 2012-12-11 | 2012-12-11 | Composite pile with strongly-stirred soil implanted with rigid body and embedded with hard bearing layer |
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| Publication Number | Publication Date |
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| CN203256736U true CN203256736U (en) | 2013-10-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220698186 Expired - Lifetime CN203256736U (en) | 2012-12-11 | 2012-12-11 | Composite pile with strongly-stirred soil implanted with rigid body and embedded with hard bearing layer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104404948A (en) * | 2014-10-08 | 2015-03-11 | 海南大学 | Bamboo reinforcedcement-soil mixed pile and production method thereof |
-
2012
- 2012-12-11 CN CN 201220698186 patent/CN203256736U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104404948A (en) * | 2014-10-08 | 2015-03-11 | 海南大学 | Bamboo reinforcedcement-soil mixed pile and production method thereof |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131030 |