CN206319314U - A kind of additional cuff back-up sand building stones prefabricated pile - Google Patents
A kind of additional cuff back-up sand building stones prefabricated pile Download PDFInfo
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- CN206319314U CN206319314U CN201621319100.1U CN201621319100U CN206319314U CN 206319314 U CN206319314 U CN 206319314U CN 201621319100 U CN201621319100 U CN 201621319100U CN 206319314 U CN206319314 U CN 206319314U
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- pile
- cuff
- expanding
- prefabricated
- pile body
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- 239000004576 sand Substances 0.000 title claims abstract description 26
- 239000004575 stone Substances 0.000 title claims abstract description 16
- 239000000463 material Substances 0.000 claims abstract description 15
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 238000010030 laminating Methods 0.000 claims description 3
- 125000006850 spacer group Chemical group 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims 1
- 239000002689 soil Substances 0.000 abstract description 25
- 238000010276 construction Methods 0.000 abstract description 15
- 239000000945 filler Substances 0.000 abstract description 9
- 230000008901 benefit Effects 0.000 abstract description 6
- 238000013461 design Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 4
- 230000015572 biosynthetic process Effects 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 239000011148 porous material Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000004062 sedimentation Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 239000004927 clay Substances 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 102000012002 Aquaporin 4 Human genes 0.000 description 1
- 108010036280 Aquaporin 4 Proteins 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000037237 body shape Effects 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
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Landscapes
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The utility model discloses a kind of additional cuff back-up sand building stones prefabricated pile.After prefabricated pile pile, pile top is expanded by the additional expanding cuff of pile body and stake bottom and is connected with pile body, the expanding pile body in nodular interval is formed.While the prefabricated pile of jacketed hoop is pressed into or squeezes into foundation soil outside, filled out to stake week and send sand material, ultimately formed by additional cuff prefabricated pile, all sandstone fillers of stake, the coefficient composite foundation of foundation soil.Under the method, stake week sandstone filler formation drainage channel, soil solidifying process accelerates, and settlement after construction is controlled after the completion of construction；The bigger soil body internal friction angle of sand material provides the bigger pile side friction of pile foundation, can improve bearing capacity of pile foundation；Additional cuff includes the expanding cuff of pile body and stake end expands pile top making apparatus simply, without independent custom mold, at the same it is adjustable in pile body fixed position, a variety of designs and operating mode are can adapt to, with good engineering adaptability；Being spaced expanding pile body can be provided more than external diameter and the prefabricated pile bearing capacity of extension diameter section identical, while manufacturing cost can be saved, with good economic benefit.
Description
Technical field
The utility model belongs to construction method field, and in particular to a kind of additional cuff back-up sand building stones prefabricated pile.
Background technology
Pile foundation engineering is as an important step in engineering construction, and quality and economic benefit to whole engineering are suffered from
Very important influence.In pile foundation engineering, prefabricated pile has speed of application fast, and single pile bearing capacity is high, and pile quality has guarantor
Card, the advantages of economic benefit is excellent obtains relatively broad application in Practical Project.
But there is also some problems in Practical Project work progress for prefabricated pile.For soft soil foundation, particularly satisfy
And Soft Clay Foundation, because the drain bar depth for lacking vertical drainage mechanism or setting is long far away from stake, prefabricated pile and stake week
Relative settlement is excessive after geotechnique, can cause pile-side negative friction.Pile-side negative friction can cause the change of pile foundation single pile bearing capacity
Change and the differential settlement of superstructure, influence can be produced when serious on the resistance to overturning of superstructure.So, prefabricated
In the design and work progress of stake need that the settlement after construction of pile foundation is analyzed and controlled.
Utility model content
The purpose of this utility model is to solve in the prior art because foundation soil consolidation slowly causes difference after pile foundation work
The problem of sedimentation, and a kind of additional cuff back-up sand building stones prefabricated pile is provided.
In view of having differences sedimentation after soft clay area prefabricated pile and soil around pile work, pile body side friction caused by its result
Increase may produce serious consequence, it is necessary to account for the rapidly solidified of soil around pile to reduce after its work to superstructure
Sedimentation.And the technical scheme that the utility model solves concrete technical problems use is：
Additional cuff back-up sand building stones prefabricated pile, including prefabricated pile pile body, expanding cuff and stake bottom expand pile top；Described expansion
Footpath cuff is in hollow annular, and its external diameter is more than pile body external diameter；Spacer sleeve is provided with several expanding cuff formation nodular stakes on pile body；
Described stake bottom expansion pile top is fixed on pile body bottom and maximum outside diameter is not less than the expanding cuff external diameter of pile body；Described prefabricated pile
Sand material is filled with the certain limit of pile body periphery, the minimum diameter of the sandstone bed of material is not less than expanding cuff external diameter.
Preferably, the shape of hollow section matches with pile body cross section on the inside of described expanding cuff, make expanding set
Hoop laminating is fixed on pile body, is provided with interstitial channels between expanding cuff and prefabricated pile pile body, is used as vertical drainage passage.
Preferably, described expanding cuff is detachably secured on prefabricated pile pile body by fixture.
Preferably, described expanding cuff can be adjusted up and down in the fixed position of pile body.
Preferably, it is in filling type or hoop type that described stake bottom, which expands pile top with the junction of prefabricated pile pile body,.
The beneficial effects of the utility model are as follows：
1. the outside spacers of prefabricated pile pile body secure the expanding cuff of multiple levels, meanwhile, also it is surround on the outside of its pile body
One layer of sandstone bed of material with hole with diameter greater than expanding cuff, forms a passage that can be used in draining, drives piles
Or the super quiet pore water produced during piling can be able to comparatively fast dissipate by the passage, soil solidifying process accelerates, construction
After the completion of settlement after construction be effectively controlled.
2. sand material compares the bigger soil body internal friction angle of foundation soil there is provided the bigger pile side friction of pile foundation, Ke Yiti
High bearing capacity of pile foundation；Meanwhile, stake bottom expands pile top and is conducive to being formed one during piling or piling with diameter greater than expanding set
The passage of external diameter is bound round, for filling sand material.And pile body enters behind underground layer relevant position, end resistance can also be improved.
3. additional cuff includes the expanding cuff of pile body and stake end expands pile top making apparatus simply, without independent custom mold
Tool, while it is adjustable in pile body fixed position, can adapt to a variety of designs and operating mode, with good engineering adaptability；
4. shield bucket and cuff mould can be recycled, with certain economic benefit；
Clearly 5. its bearing capacity of pile body interval hole-enlargement pile of the present utility model is more than external diameter and extension diameter section to result of the test
Identical prefabricated pile.It can be seen that it is expanding by pile body interval, manufacture can be reduced on the premise of bearing capacity and security is not lost
Cost, with good economic benefit；
Brief description of the drawings
Fig. 1 is a kind of additional cuff prefabricated pile back-up sand stone construction method sectional schematic diagram of the present utility model.
Fig. 2 is that the additional cuff shown in Fig. 1 is connected top view with prefabricated pile pile body.
Fig. 3 is another additional cuff prefabricated pile back-up sand stone construction method sectional schematic diagram of the present utility model.
Fig. 4 is that the additional cuff shown in Fig. 3 is connected top view with prefabricated pile pile body.
In figure：Prefabricated tubular pile pile body 1, precast square pile pile body 2, expanding cuff 3, drainage channel 4, stake bottom expand pile top (plug
Enter formula) 5, stake bottom expand pile top (hoop type) 6, shield bucket 7, sandstone filler 8, pending foundation soil 9, bolt connection piece 10.
Embodiment
The utility model is further illustrated with implementation steps below in conjunction with the accompanying drawings.Each specific embodiment in the utility model
In technical characteristic in case of no collision, can be mutually combined, be not construed as limiting.
As shown in figure 1, being the jacketed hoop prefabricated pilework vertical section schematic diagram of back-up sand building stones in one embodiment China and foreign countries.This is prefabricated
Pilework is embedded in pending foundation soil 9, for supporting top structures or other structures.Prefabricated pilework includes prefabricated pipe
Stake pile body 1, expanding cuff 3 and stake bottom expand pile top.The cross section of prefabricated tubular pile pile body 1 is in hollow circular ring shape, can be carried out outside the venue
Subsequently assembled at the construction field (site) after prefabricated, can also it is prefabricated directly outside the venue, be completed after be transported to job site.Pile body
The upper part for needing to assemble includes expanding cuff 3 and stake bottom expands pile top two parts.Expanding cuff 3 is one in hollow annular
Hoop body, for being fastened around on the outside of pile body, therefore its external diameter need to be more than pile body external diameter, and its inner side hollow parts preferably with stake
The profile of body matches.In the present embodiment, pile body is in cylinder, and therefore, the inner side of expanding cuff 3 is also slightly larger than pile body for diameter
The circle of external diameter.Expanding cuff 3 is preferably detachable to be fixed on pile body.As that in the present embodiment, can be by expanding 3 one points of cuff
Two, centre is connected with part 10 and is attached, in order to install, and expanding cuff 3 can go up downward in the fixed position of pile body
It is whole.An expanding cuff 3 can be arranged on pile body at a certain distance, prefabricated pile is formed a kind of nodular by several expanding cuffs 3
Stake form.
In addition, the bottom of pile body, which is fixed with a bottom, expands pile top, in order that pile body and expanding cuff 3 smoothly can enter to bury
In layer, in order to provide packing space to follow-up sandstone filler, the external diameter that stake bottom expands the cross section maximum of pile top can not be small
In the external diameter of expanding cuff 3.
One of the purpose of this utility model is that pile body to be enters the super quiet pore water offer row produced during foundation soil
Aquaporin-4, therefore the peripheral certain distance annular of prefabricated pile pile body is filled with sandstone filler 8.The full soil body of the filling of sandstone filler 8 and
Annulus between pile body.In order to meet the drainage efficiency of super quiet pore water, the minimum outer diameter of the sandstone bed of material is not less than expanding
The external diameter of cuff 3, enables the water below cuff to drain into top quickly through sand material.Certainly, the cross section of 8 layers of sandstone filler is not
Must be the annular shape of standard, it is also possible to elliptical ring or other shapes, but its circumferential minimum across footpath need to be more than expanding cuff 3
External diameter, thus has sandstone filler 8 to form drainage channel 4 on the outside of expanding cuff 3.
, can between expanding cuff 3 and prefabricated pile pile body although laminating is fixed on pile body in addition, expanding cuff 3 need to try one's best
To be provided with interstitial channels, vertical drainage passage is used as.As shown in Fig. 2 can be in petal form along collarette outside pile body cross section
Around multiple semicircular through holes are laid, cuff need not be bypassed by making the water of the expanding lower section of cuff 3, can be discharged directly from through hole.
Certainly, the shape of interstitial channels might not use the form in figure, can design according to actual needs.When the expanding outside of cuff 3
Sandstone depth of packing it is inadequate when, can adjust interstitial channels size, to improve drainage efficiency.
Expansion pile top in stake bottom can take various forms with the junction of prefabricated tubular pile pile body 1 is reinforced, in the present embodiment
For the design of filling type.Expand such as the stake bottom in figure shown in pile top (filling type) 5, stake bottom, which expands, sets one and stake at the top of pile top
The projection that hollow section is matched in body, is then plunged into prefabricated tubular pile pile body 1.
Certainly, there is more deformation in above-described embodiment, such as in another embodiment, as shown in figure 3, its bottom expands
Pile top can be using hoop type design, i.e., the stake bottom in figure expands pile top (hoop type) 6.In addition, as shown in figure 4, prefabricated tubular pile stake
Body 1 is also replaceable into precast square pile pile body 2.
In addition, the utility model also provides a kind of additional cuff prefabricated pile back-up sand stone construction method for realizing said structure,
Comprise the following steps：
Step 1. is spaced (specific interval can be determined according to experiment) on prefabricated pile pile body and fixes several cavity rings
The formation nodular stake of expanding cuff 3 of shape, while fixing maximum outside diameter in pile body bottom not less than pile body external diameter (as far as possible more than expanding
The external diameter of cuff 3) stake bottom expand pile top；
Step 2. is placed with diameter greater than expanding cuff external diameter in the target construction location of the pending foundation soil 9 of prefabricated pile
Bucket 7 is protected, the shield uncovered of bucket 7 is bottomless, only with cylindrical side wall, be easy to fill sandstone material；
The table of pending foundation soil 9 that step 3. will be surrounded by the prefabricated pile one end top assembled in step 1 with shield bucket 7
Face, is then squeezed into or is pressed into soil layer by machinery.In this process, expansion pile top in stake bottom opens up out a post in the soil body
Shape passage, for accommodating pile body.Meanwhile, need constantly to fill out into shield bucket 7 in this process and send enough sand materials (at least can
Adequately fill up the gap between pile body and the soil body), under the drive of expanding cuff 3, sand material is brought into foundation soil with pile body
And be filled in the peripheral certain distance of pile body, form all drainage channels 4 of a stake.
After the completion of step 4. piling, remove shield bucket 7 to recycle.
In order to examine the performance of above-mentioned additional cuff back-up sand building stones prefabricated pile, to the pile body and external diameter and expanding cuff 3
Identical prefabricated pile, identical wall thickness, stake it is long, with stake form and construction method under the conditions of, carried out static load test contrast.Examination
Test result to show, the identical of expanding cuff 3 of external diameter and this is compared using its bearing capacity of nodular pilework of the present utility model
Prefabricated pile improves 10%-20% or so, and bearing capacity is suitable with the prefabricated pile bearing capacity of larger diameter, is not influenceing bearing capacity
Its manufacturing cost has obtained effective reduction simultaneously.Under this structure, the expanding pile top of pile body nodular ledge and stake end is strengthened
Pile body supports the contact of soil layer with pile peripheral earth and bottom so that pile side friction and end resistance be obtained for certain journey
The raising of degree, the lifting of pile foundation bearing capacity.In addition, when pile body interval hole-enlargement pile is during squeezing into or being pressed into, if in stake
Fill out in week and send sand material so that soil around pile internal friction angle increases, then shaft resistance also can accordingly increase, and pile foundation bearing capacity will be obtained
To further lifting.In addition, in terms of ground settlement after construction, all drainage channels 4 of stake that all sandstone fillers 8 of stake are formed can be accelerated
The diffusion of excess pore water pressure in soil around pile, accelerates ground soil solidifying, greatly reduces ground settlement after construction.
Embodiment described above is a kind of preferably scheme of the present utility model, so itself and be not used to limit this practicality
It is new., can be with the case where not departing from spirit and scope of the present utility model about the those of ordinary skill of technical field
Make a variety of changes and modification.Therefore the technical scheme that all modes for taking equivalent or equivalent transformation are obtained, all falls within
In protection domain of the present utility model.
Claims (5)
1. a kind of additional cuff back-up sand building stones prefabricated pile, it is characterised in that：Expand including prefabricated pile pile body, expanding cuff and stake bottom
Pile top；Described expanding cuff is in hollow annular, and its external diameter is more than pile body external diameter；Spacer sleeve is provided with several expanding sets on pile body
Hoop into nodular stake；Described stake bottom expansion pile top is fixed on pile body bottom and maximum outside diameter is not less than outside the expanding cuff of pile body
Footpath；Sand material is filled with the peripheral certain limit of described prefabricated pile pile body, the minimum diameter of the sandstone bed of material is not less than expanding set
Bind round external diameter.
2. additional cuff back-up sand building stones prefabricated pile as claimed in claim 1, it is characterised in that：It is empty on the inside of described expanding cuff
The shape in heart section matches with pile body cross section, expanding cuff laminating is fixed on pile body, expanding cuff and prefabricated pile stake
Interstitial channels are provided between body, vertical drainage passage is used as.
3. additional cuff back-up sand building stones prefabricated pile as claimed in claim 1, it is characterised in that：Described expanding cuff passes through solid
Determine part to be detachably secured on prefabricated pile pile body.
4. additional cuff back-up sand building stones prefabricated pile as claimed in claim 1, it is characterised in that：Described expanding cuff is in pile body
Fixed position can up and down adjust.
5. additional cuff back-up sand building stones prefabricated pile as claimed in claim 1, it is characterised in that：Described stake bottom expand pile top with
The junction of prefabricated pile pile body is in filling type or hoop type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621319100.1U CN206319314U (en) | 2016-12-03 | 2016-12-03 | A kind of additional cuff back-up sand building stones prefabricated pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621319100.1U CN206319314U (en) | 2016-12-03 | 2016-12-03 | A kind of additional cuff back-up sand building stones prefabricated pile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206319314U true CN206319314U (en) | 2017-07-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621319100.1U Expired - Fee Related CN206319314U (en) | 2016-12-03 | 2016-12-03 | A kind of additional cuff back-up sand building stones prefabricated pile |
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| CN (1) | CN206319314U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114875886A (en) * | 2022-06-09 | 2022-08-09 | 中国电建集团成都勘测设计研究院有限公司 | Construction method of expanding vibroflotation gravel pile |
-
2016
- 2016-12-03 CN CN201621319100.1U patent/CN206319314U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114875886A (en) * | 2022-06-09 | 2022-08-09 | 中国电建集团成都勘测设计研究院有限公司 | Construction method of expanding vibroflotation gravel pile |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170711 Termination date: 20201203 |