CN207189941U - Foundation pile for Frozen Ground Area photovoltaic bracket - Google Patents
Foundation pile for Frozen Ground Area photovoltaic bracket Download PDFInfo
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- CN207189941U CN207189941U CN201720918155.2U CN201720918155U CN207189941U CN 207189941 U CN207189941 U CN 207189941U CN 201720918155 U CN201720918155 U CN 201720918155U CN 207189941 U CN207189941 U CN 207189941U
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Abstract
The utility model provides a kind of foundation pile suitable for Frozen Ground Area photovoltaic bracket, belongs to field of photovoltaic technology.It includes：Prefabricated pile body；Pea gravel concreten layer, its cladding are arranged on the prefabricated pile body surrounding；Wherein, the prefabricated pile body includes the steel reinforcement cage being formed by connecting by main vertical muscle and multiple stirrup colligations, and concrete has been poured on the steel reinforcement cage, and the upper end of the vertical muscle of the master is welded with the built-in fitting of steel；Or, the prefabricated pile body includes the piling bar body with heat-insulation layer.Fixed prefabricated pile body is played a part of by pea gravel concreten layer and isolation surrounding frozen soil directly contacts with pile body, so as to reach the infringement purpose for reducing Frost heave of frozen soil power to prefabricated pile body, protects pile body safe.
Description
Technical field
The utility model belongs to field of photovoltaic technology, and in particular to a kind of foundation pile for Frozen Ground Area photovoltaic bracket.
Background technology
With photovoltaic market fast development, influenceed by the duration, in northeast, northwest etc., northern severe cold, cold district, winter apply
Work almost belongs to frozen soil or frost zone geologic province into a kind of inevitable trend, such area.Apply in the winter time
In man-hour, because frozen soil layer hardness is big, frost-heave force effect is strong, influenceed by frozen soil, which kind of base form photovoltaic bracket basis takes
Into a kind of technical problem.Pile foundation in photovoltaic bracket basis is because its stress is direct, construction is simple and direct, material is saved, speed of application
Fast almost has become a kind of trend.Conventional photovoltaic bracket pile foundation has cast-in-place concrete pile, finished product prefabricated pile, piling bar etc.
Several forms.
In Frozen Ground Area winter construction, photovoltaic bracket pile foundation form can take cast-in-place concrete pile, finished product prefabricated pile or
Three kinds of forms of person's piling bar.
1st, cast-in-place concrete pile, the problem of winter construction is present in Frozen Ground Area, mainly have：First, winter concreting
It should not conserve；Secondly, influenceed by winter temperature and by sleety weather, concrete pile quality is poor, it is easy to it is strong not reach design
Degree requires.Finally, pile body directly contacts frozen soil layer, it is understood that there may be by frost-heave force act on caused by pile damage accident.
2nd, finished product prefabricated pile, the problem of winter construction is present in Frozen Ground Area, mainly have：Because winter frozen soil hardness is excessive,
Stake is suppressed by force, easily causes prefabricated pile that pile foundation fracture accident occurs.
3rd, piling bar, the problem of winter construction is present in Frozen Ground Area, mainly have：First, there is low temperature cold in piling bar material in itself
Crisp phenomenon, Cold Brittle Fracture phenomenon occurs when may suppress.Secondly, piling bar cost is higher for concrete-pile.
Utility model content
On the premise of considering each side factor, the utility model provides one kind and is applied to Frozen Ground Area photovoltaic bracket
Foundation pile, including：
Prefabricated pile body；
Pea gravel concreten layer, its cladding are arranged on the prefabricated pile body surrounding；
Wherein, the prefabricated pile body includes the steel reinforcement cage being formed by connecting by main vertical muscle and multiple stirrup colligations, the reinforcing bar
Concrete is poured on cage, the upper end of the vertical muscle of the master is welded with the built-in fitting of steel；Or, the prefabricated pile body is included with guarantor
The piling bar body of warm layer.
Preferably：The pea gravel concreten layer cladding is arranged on the surrounding of the prefabricated pile body bottom.
Preferably, the prefabricated pile body includes the steel reinforcement cage being formed by connecting by main vertical muscle and multiple stirrup colligations, the steel
Concrete is poured on muscle cage, the upper end of the vertical muscle of the master is welded with the built-in fitting of steel, and the strength grade of the concrete is
More than C30.
It is highly preferred that the material of the built-in fitting is Q235 steel.
It is highly preferred that the bottom of the prefabricated pile body is provided with steel shoe.
Preferably, the thickness of the pea gravel concreten layer is 200 ~ 300mm.
The utility model uses above scheme, has the following advantages that compared with prior art：
Fixed prefabricated pile body is played a part of by pea gravel concreten layer and isolation surrounding frozen soil directly contacts with pile body, from
And reach the infringement purpose for reducing Frost heave of frozen soil power to prefabricated pile body, protect pile body safe.
Brief description of the drawings
It is required in being described below to embodiment to use in order to illustrate more clearly of the technical solution of the utility model
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the utility model, for
For those of ordinary skill in the art, on the premise of not paying creative work, other can also be obtained according to these accompanying drawings
Accompanying drawing.
Accompanying drawing 1 is the structural representation according to a kind of prefabricated pile body of foundation pile of the present utility model；
Accompanying drawing 2 is that the structural representation drawn in hole is arranged on according to a kind of prefabricated pile body of foundation pile of the present utility model.
In above-mentioned accompanying drawing,
1st, prefabricated pile body；11st, main vertical muscle；12nd, stirrup；13rd, concrete；14th, built-in fitting；
2nd, frozen soil；20th, hole；
3rd, pea gravel concreten.
Embodiment
Preferred embodiment of the present utility model is described in detail below in conjunction with the accompanying drawings, so that the advantages of the utility model
It can be easier to be understood by the person skilled in the art with feature.Herein it should be noted that explanation for these embodiments
It is used to help understand the utility model, but does not form to restriction of the present utility model.In addition, this practicality disclosed below is new
As long as involved technical characteristic does not form conflict can and is combined with each other each other in each embodiment of type.
The utility model aim to provide it is a kind of suitable for foundation pile of Frozen Ground Area photovoltaic bracket and preparation method thereof, can
The problem of existing for the construction of Frozen Ground Area winter, the utility model solves cast-in-place concrete pile and should not conserved first, pile matter
Measure the problem of poor, pile body is destroyed by frozen soil frost-heave force；Next solves the pile body breaking accident for directly suppressing prefabricated pile generation；Most
After avoid brittle fracture under low temperature phenomenon existing for piling bar, while saved cost, shortened the duration.
Specifically, referring to the drawings shown in 1,2, the basis provided by the utility model suitable for Frozen Ground Area photovoltaic bracket
Stake, including：
Prefabricated pile body 1；
Pea gravel concreten layer 3, it, which is coated, is arranged on the surrounding of prefabricated pile body 1, and the four of the specially prefabricated bottom of pile body 1
Week；
Wherein, the prefabricated pile body 1 includes the steel reinforcement cage being formed by connecting by main vertical muscle 11 and the colligation of multiple stirrups 12, described
Concrete 13 is poured on steel reinforcement cage, the upper end of the vertical muscle 11 of the master is welded with the built-in fitting 14 of steel；Or, the prefabricated pile body
Including the piling bar body with heat-insulation layer.The thickness of the pea gravel concreten layer 3 is 200 ~ 300mm.Pea gravel concreten refers to one kind
The known concrete mainly mixed by microlith, sand, cement etc..
The preparation method of the above-mentioned foundation pile for Frozen Ground Area photovoltaic bracket includes the following steps that order is carried out：
A, prefabricated pile body is made at the construction field (site), and draws hole in the installation region of foundation pile；
B, the prefabricated pile body is put into the hole；
C, pea gravel concreten is injected in the gap of the prefabricated pile body and hole wall to be in the milk and solidified.
Step A further comprises following steps：
A1, make prefabricated pile body：Main vertical muscle and multiple stirrup colligations are connected into muscle cage, the casting concrete on muscle cage,
The upper end of main vertical muscle is welded with the built-in fitting of steel, is transported to after strength grade of concrete reaches more than 70% at the hole；
Hole is drawn at A2, scene：Draw the big 200 ~ 300mm of external diameter of prefabricated pile body described in the aperture ratio of hole.
It should be noted that in step A1, the piling bar body with heat-insulation layer can be used to substitute above-mentioned muscle cage and concrete knot
The prefabricated pile body of structure.Before finished product prefabricated pile is suppressed, in step A1, also steel shoe can be set in the prefabricated pile body bottom.
Step C further comprises the following steps that order is carried out：
C1, inject pea gravel concreten in the gap of the prefabricated pile body and hole wall；
C2, lateral support is carried out to the prefabricated pile body；
C3, solidify the pea gravel concreten in the gap, setting time is at least 2h；
C4, remove lateral support.
Specifically, foundation pile construction Making programme is as follows used by the present embodiment：
S1, the positioning of live unwrapping wire, while the prefabricated pile body 1 of live processing and fabricating（As shown in Figure 1）.Wherein, prefabricated pile body 1
Way it is as follows：In steel reinforcement cage upper concrete 13, strength grade of concrete C30, steel reinforcement cage takes main vertical muscle 11 plus stirrup
12 colligations connect.Built-in fitting 14 takes Q235 steel to make, and built-in fitting 14 between main vertical muscle 11 with being welded to connect.Concrete strength etc.
Level can be transported to site operation after reaching 70%.
Hole 20 is drawn at S2, the scene of frozen soil 2.Wherein, it is big 200 ~ 300mm to draw diameter of the aperture of hole 20 at least than prefabricated pile body 1.Should
Can effectively prevent frost-heave force after being in the milk in gap and is destroyed to caused by pile body, and can using surrounding frozen soil layer offer favorably
Side friction ensures that pile body bearing capacity meets design requirement.
S3, concrete prefabricated pile body 1 is placed on and drawn in hole 20.Wherein, the prefabricated accurate positioning of pile body 1, error need to be ensured
Meet design requirement.
S4, the grouting i.e. pea gravel concreten 3 of injection addition impervious agent in the gap of hole wall and prefabricated pile body 1（Such as accompanying drawing 2
It is shown）.Wherein, the strength grade of pea gravel concreten 3 is at least C35；The weight of addition impervious agent takes cement in pea gravel concreten
The 1% of weight.
S5, after grouting solidify after, pile foundation construction complete.Wherein need to provide lateral support to prefabricated pile body 1 before grouting solidification,
Support, setting time at least 2 hours can be removed after solidification.
When needing to make multiple foundation piles, repeat above-mentioned flow, particularly flow S2-S4.
The utility model uses above scheme, has the following advantages that compared with prior art：
Prefabricated pile body to be taken, is compared with bored concrete pile, quality is more reliable, and when can save the maintenance after bored concrete pile pours
Between, so as to accelerating construction progress；
Winter takes in frozen soil layer first draws hole, places the construction method of prefabricated pile body afterwards, compared to directly suppressing prefabricated pile and
Speech, avoid and because frozen soil hardness is excessive, cause the accident of prefabricated pile foundation fracture to occur；
Prefabricated pile body takes the method in construction area processing and fabricating, compares for purchase finished product prefabricated pile, saves
Cost of manufacture and cost of transportation；
Draw after prefabricated pile body is placed in hole, grouting injected between hole wall and prefabricated pile body, play fixed prefabricated pile body and
The effect that isolation surrounding frozen soil directly contacts with pile body, so as to reach the infringement purpose for reducing Frost heave of frozen soil power to prefabricated pile body,
Protect pile body safe.
Above-described embodiment is a kind of preferred embodiment only to illustrate technical concepts and features of the present utility model, its mesh
Be that person skilled in the art can understand content of the present utility model and implement according to this, this reality can not be limited with this
With new protection domain.All equivalent transformations made according to principle of the present utility model or modification, should all cover in this practicality
Within new protection domain.
Claims (6)
- A kind of 1. foundation pile for Frozen Ground Area photovoltaic bracket, it is characterised in that including：Prefabricated pile body；Pea gravel concreten layer, its cladding are arranged on the prefabricated pile body surrounding；Wherein, the prefabricated pile body includes the steel reinforcement cage being formed by connecting by main vertical muscle and multiple stirrup colligations, on the steel reinforcement cage Concrete is poured, the upper end of the vertical muscle of the master is welded with the built-in fitting of steel.
- 2. foundation pile according to claim 1, it is characterised in that：The pea gravel concreten layer cladding is arranged on described prefabricated The surrounding of pile body bottom.
- 3. foundation pile according to claim 1, it is characterised in that：The prefabricated pile body is included by main vertical muscle and multiple stirrups The steel reinforcement cage that colligation is formed by connecting, concrete has been poured on the steel reinforcement cage, and the upper end that the master indulges muscle is welded with the pre- of steel Embedded part, the strength grade of the concrete is more than C30.
- 4. foundation pile according to claim 1, it is characterised in that：The material of the built-in fitting is Q235 steel.
- 5. foundation pile according to claim 1, it is characterised in that：The bottom of the prefabricated pile body is provided with steel shoe.
- 6. foundation pile according to claim 1, it is characterised in that：The thickness of the pea gravel concreten layer is 200 ~ 300mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720918155.2U CN207189941U (en) | 2017-07-27 | 2017-07-27 | Foundation pile for Frozen Ground Area photovoltaic bracket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720918155.2U CN207189941U (en) | 2017-07-27 | 2017-07-27 | Foundation pile for Frozen Ground Area photovoltaic bracket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207189941U true CN207189941U (en) | 2018-04-06 |
Family
ID=61798800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720918155.2U Active CN207189941U (en) | 2017-07-27 | 2017-07-27 | Foundation pile for Frozen Ground Area photovoltaic bracket |
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| CN (1) | CN207189941U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107310022A (en) * | 2017-07-27 | 2017-11-03 | 江苏腾晖电力技术有限公司 | Foundation pile for Frozen Ground Area photovoltaic bracket and preparation method thereof |
| CN110359500A (en) * | 2019-07-01 | 2019-10-22 | 浙江大学 | A kind of tubular pole-cement soil contact face sample preparation device and contact surface frictional behavior research shearing test device and test method |
-
2017
- 2017-07-27 CN CN201720918155.2U patent/CN207189941U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107310022A (en) * | 2017-07-27 | 2017-11-03 | 江苏腾晖电力技术有限公司 | Foundation pile for Frozen Ground Area photovoltaic bracket and preparation method thereof |
| CN110359500A (en) * | 2019-07-01 | 2019-10-22 | 浙江大学 | A kind of tubular pole-cement soil contact face sample preparation device and contact surface frictional behavior research shearing test device and test method |
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