CN207176713U - A kind of piling strtucture for reducing side friction - Google Patents
A kind of piling strtucture for reducing side friction Download PDFInfo
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- CN207176713U CN207176713U CN201720835362.1U CN201720835362U CN207176713U CN 207176713 U CN207176713 U CN 207176713U CN 201720835362 U CN201720835362 U CN 201720835362U CN 207176713 U CN207176713 U CN 207176713U
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Abstract
The utility model belongs to the field of engineering technology such as railway traffic engineering, building engineering, more particularly to a kind of piling strtucture for reducing side friction, it includes pile body main body and outer sleeve and lubricant, the pilework that the pile body main body is formed using the prefabricated pile of advance comprising or using in-site pouring, the top of the pile body main body is connected with supporting station, its bottom is stretched into supporting course and played a supporting role；The outer sleeve is set in the periphery of the pile body main body, and supporting course and fixation are stretched into the bottom of outer sleeve；Gap location is filled with lubricant between the pile body main body and outer sleeve.Piling strtucture of the present utility model can resist the influence of positive friction and negative friction simultaneously, the deformation of piling strtucture and Adjacent Buildings is controlled in terms of two, and the piling strtucture is applied to prefabricated pile and bored concrete pile, also has the advantages that easy construction, structure are safe and reliable.
Description
Technical field
The utility model belongs to the field of engineering technology such as railway traffic engineering, building engineering, more particularly, to one
Kind reduces the piling strtucture of side friction.
Background technology
Pile foundation can be divided into friction pile and end-bearing pile by bearing capacity principle, wherein, friction pile stake top vertical load is mainly by stake
Side-friction force undertakes, and stake end supporting force is smaller.Generally, after stake is acted on by xial feed, relative to Pile side soil body to
Bottom offset, therefore soil produces upward frictional resistance, referred to as positive friction to stake；But when pile peripheral earth because certain reason occurs
Sink, when the soil body rate of settling is more than the fall rate of stake, then Pile side soil does downward displacement with respect to stake, so that soil is right
Stake produces downward frictional resistance, is called negative friction.
Soft soil foundation is widely distributed, and is easily settled because its soil property is soft.In the engineering of soft clay area, often meet
Underground buildings or structures to be protected are needed to deformation sensitive, the running tunnel of such as track traffic, literary health care are built, Gas Pipe.
When friction pile is arranged in soft soil foundation, its stake top load is mainly undertaken by the side friction of stake side.When pile foundation is built with above-mentioned
(structure) build thing spacing it is nearer when, as caused by pile top load side friction can to it is such protection object pull sedimentation and deformation downwards,
Cause road, building or pipeline to be deformed, both unsightly, be also easy to cause the accident.Its reason be because pile foundation in itself
Sedimentation is smaller, and the Settlement of soft clay around pile foundation is serious, causes pile foundation laterally to generate larger frictional force.
The above mentioned problem run into use for friction pile, at present typically take to being deformed because of sedimentation
Road surface and building carry out the method with maintenance deformation, but existing operation maintenance is all situation about being had occurred and that in deformation
The reparation of lower progress, therefore still suffer from problems with：(1) potential safety hazard that sedimentation and deformation is brought can not find and eliminate in time,
Easily cause the accident；(2) because sedimentation and deformation can occur repeatedly, cause later stage operation maintenance input big, run
Maintenance cost is high.And in order to reduce soft soil foundation pile foundation frictional resistance, at present typically after settlement of soft foundation certain standard, then brill of constructing
Hole pouring pile, but settlement after construction causes the negative friction of pile foundation fundamentally to solve.
In addition, published Chinese patent CN1078281A, which provides a kind of pile foundation, eliminates negative wear device, the dress
Put the effect for by the separation layer between pile foundation and unloading sleeve, eliminating negative friction；Patent CN104372795 discloses one kind and disappeared
Except the device and construction method of soft soil foundation pile foundation negative friction force, work occurs for the soft soil foundation for occurring pile foundation periphery in operation stage
After when settling, road surface caused by eliminating negative friction without frictional resistance relative motion between inside and outside cylinder can be passed through and protrude phenomenon.On but
State the technical scheme provided described in patent to be merely able to tackle the influence that negative friction is brought, for the lateral positive friction of pile foundation
The influence brought can not eliminate, and positive friction can also produce as negative friction to pile foundation and its state of Adjacent Buildings
Raw to influence, therefore, the influence for eliminating positive friction is also most important.In addition, and above-mentioned technical proposal it is targeted main body it is more single
One, it is impossible to while it is applied to prefabricated pile and bored concrete pile.
Due to drawbacks described above and deficiency be present, this area is needed badly to make and further improved, and designs a kind of new
Piling strtucture, influence caused by soft soil base sedimentation can be avoided.
Utility model content
For the disadvantages described above or Improvement requirement of prior art, the utility model provides a kind of stake for reducing side friction
Based structures, wherein the characteristics of side friction with reference to existing friction pile is big, the respective design structure and construction method of pile foundation,
And by the way that the concrete structure setting of pile foundation and working procedure etc. are studied and designed, it is set to be applied to prefabricated pile and filling
Stake is noted, accordingly also effectively can reduce or solve to closing on the influences of underground buildings or structures simultaneously to be had by pile side friction
The advantages that easy construction, safe and reliable structure.
To achieve the above object, the utility model provides a kind of piling strtucture for reducing side friction, it is characterised in that
It includes pile body main body and outer sleeve and lubricant, wherein,
The pilework that the pile body main body is used the prefabricated pile of advance comprising or formed using in-site pouring, the pile body master
The supporting course of underground is stretched into the top of body and the supporting station connection of piling strtucture, its bottom；
The outer sleeve is set in the periphery of the pile body main body, and the soil layer of side is separated with pile body main body, and described
Supporting course is also stretched into the bottom of outer sleeve；
Gap location is filled with lubricant between the pile body main body and outer sleeve.
Specifically, the piling strtucture is in the periphery of prefabricated pile or bored concrete pile by being arranged outer sleeve, and by outer sleeve
Lubricant is filled between internal and prefabricated pile or bored concrete pile, frictional force can be efficiently reduced, make deformation and the Pile side soil of pile body
Deformation separate, soft soil foundation can be reasonably resistant to and sunk the negative friction that brings, and by the way that the bottom of stake will be supported
Supporting course is stretched to, the stake top vertical load of pile foundation is mainly undertaken to be changed into by pile side friction and is mainly held by stake end supporting force
Load, then can be reasonably resistant to positive friction, and the deformation of piling strtucture and Adjacent Buildings is controlled in terms of two.And the pile foundation
The solution principle of structure is clear, simple and easy to do, economical rationality, technology maturation, has a extensive future, and benefit is good.
It is further preferred that the pilework that the in-site pouring forms includes inner sleeve and the perfusion shaping in inner sleeve
Bored concrete pile, bored concrete pile reinforcing bar is additionally provided with the bored concrete pile and is strengthened.By in-site pouring, disclosure satisfy that varying environment and
The needs of the piling strtucture of different specification size, wide adaptability.And the addition of bored concrete pile reinforcing bar can further strengthen bored concrete pile
Intensity.
Preferably, the material of the prefabricated pile or bored concrete pile is fiberglass or armored concrete material.
Preferably, the outer sleeve portions setting or the elongated periphery for being arranged on the pile body main body.According to actual conditions
By outer sleeve portions setting or elongated setting, the soil layer of pile body main body and side is fully or partially separate from, realizes offside frictional resistance
The control of power, so as to meet the needs of different use environments.
Preferably, the material of the outer sleeve and inner sleeve is steel, glass fibre or PVC.
Preferably, the cross section of the pile body main body is circular or polygon.
In general, by the contemplated above technical scheme of the utility model compared with prior art, have following excellent
Point and beneficial effect：
(1) piling strtucture of the present utility model, wherein the characteristics of side friction with reference to friction pile is big, respective design stake
The structure and construction method of base, and by the way that the concrete structure setting of pile foundation and working procedure etc. are studied and designed,
Accordingly effectively it can reduce or solve by pile side friction to closing on the influence of underground buildings or structures, while there is construction letter
Just the advantages that, structure is safe and reliable, a kind of superior solution is provided for design and construction personnel.
(2) when pile foundation and such buildings or structures spacing are nearer, to reduce or solving by pile side friction to closing on
The influence of underground buildings or structures by pile side friction by former by the stake top vertical load of pile foundation, it is necessary to mainly undertake transformation
Mainly to be undertaken by stake end supporting force.The structure that the utility model is separated using outer sleeve and pile body main body, is filled therebetween
Lubricant, pile body main body is separated with surrounding soil layer, side friction is converted into the support force at an end, side is effectively reduced and rubs
The influence of resistance.
(3) piling strtucture of the present utility model, by the way that the bottom of pile body main body and outer sleeve is stretched into solid hold
Power layer, stake and outer sleeve are fixed by supporting course, avoid its sinking, influence caused by positive friction can be reduced, so that
The piling strtucture can resist the influence of positive friction and negative friction to Adjacent Buildings simultaneously.And the piling strtucture can not only
Prefabricated pilework is enough used, can also use the bored concrete pile of filling concrete, it can be applicable the need of varying environment and specification
Ask, adaptability is more extensive.
(4) outer sleeve portions are set or elongated setting according to actual conditions, the soil layer of pile body main body and side is whole
Or be partially separated, the control to side friction is realized, while the pile body main body and inside and outside sleeve of piling strtucture are selected suitably
Material and shape, it disclosure satisfy that the demand of different use environments.
(5) scheme of the present utility model can solve the problems, such as pile foundation pile side resistance its on periphery underground structure influence, be
Design and workmen eliminate a puzzlement greatly.Also there is the technology design and easy construction, shortening construction period, structure safely may be used
By the advantages that, the high engineering measure of a large amount of costs in order to control deformation to put into is greatly reduced, suitable for track traffic
Structural defence and similar sensitive buildings or structures protection engineering, have higher economic results in society.
Brief description of the drawings
Fig. 1 is underground structure and the interior piling strtucture profile position figure for setting prefabricated pile of the present utility model；
Fig. 2 is the piling strtucture sectional drawing that prefabricated pile is set in of the present utility model；
Fig. 3 is underground structure and the interior piling strtucture profile position figure for setting bored concrete pile of the present utility model；
Fig. 4 is the piling strtucture sectional drawing that bored concrete pile is set in of the present utility model.
In all of the figs, identical reference is used for representing identical element or structure, wherein：
1- underground structures, 2- outer sleeves, 3- prefabricated piles, 4- lubricants, 5- bored concrete piles, 6- inner sleeves, 7- bored concrete pile reinforcing bars.
Embodiment
In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, below in conjunction with accompanying drawing and implementation
Example, the utility model is further elaborated.It should be appreciated that specific embodiment described herein is only explaining
The utility model, it is not used to limit the utility model.In addition, institute in each embodiment of the utility model disclosed below
As long as the technical characteristic being related to does not form conflict each other, can is mutually combined.
The utility model provides a kind of piling strtucture for reducing side friction, it is characterised in that it includes pile body main body
With outer sleeve 2 and lubricant 4, wherein,
The pilework that the pile body main body is used the prefabricated pile 3 of advance comprising or formed using in-site pouring, the pile body
The top of main body and the supporting station connection of pile foundation, its bottom are stretched into supporting course and played a supporting role；
The outer sleeve 2 is set in the periphery of the pile body main body, and the soil layer of side is separated with pile body main body, and described
Supporting course and fixation are stretched into the bottom of outer sleeve 2；
Gap location is filled with lubricant 4 between the pile body main body and outer sleeve 2, for reducing outer sleeve and the pile body
Frictional force between main body.
In a specific embodiment of the present utility model, the pilework that the in-site pouring forms includes the He of inner sleeve 6
The bored concrete pile 5 of shaping is irrigated in inner sleeve 6, being additionally provided with bored concrete pile reinforcing bar 7 in the bored concrete pile 5 is strengthened.
In another specific embodiment of the present utility model, the material of the prefabricated pile 3 or bored concrete pile 5 for fiberglass or
Armored concrete material.
In another specific embodiment of the present utility model, the part of outer sleeve 2 set or it is elongated be arranged on it is described
The periphery of pile body main body.
In another specific embodiment of the present utility model, the material of the outer sleeve 2 and inner sleeve 6 is steel, glass
Glass fiber or PVC.
In another specific embodiment of the present utility model, the cross section of the pile body main body is circular, rectangle or more
Side shape.
In another specific embodiment of the present utility model, for the internal piling strtucture for prefabricated pile 3, the structure exists
During construction, first drilled on ground and transfer outer sleeve 2；Then prefabricated pile 3 is transferred to outer sleeve 2；Finally in outer sleeve 2
Gap location filling lubricant between prefabricated pile.
In another specific embodiment of the present utility model, for the pile foundation of the internal pilework formed for in-site pouring
Structure, the piling strtucture first drill on ground in construction and transfer outer sleeve 2；Then inner sleeve 6 is put to outer sleeve 2
It is interior；Gap location filling lubricant 4 between two sleeves, prepares the bored concrete pile reinforcing bar 7 of inner sleeve 6, is finally irrigated.
Preferably to explain the utility model, two specific embodiments given below：
Embodiment 1
As shown in figure 1, for a kind of piling strtucture for reducing side friction, it includes pile body main body and outer sleeve 2, Yi Jirun
Lubrication prescription 4, wherein,
The pile body main body uses the prefabricated pile 3 of advance comprising, and the top of the pile body main body is connected with supporting station, its bottom
Portion stretches into supporting course and played a supporting role；
The outer sleeve 2 is set in the periphery of the pile body main body, and the soil layer of side is separated with pile body main body, and described
Supporting course and fixation are stretched into the bottom of outer sleeve 2；
Gap location is filled with lubricant 4 between the pile body main body and outer sleeve 2, for reducing outer sleeve and the pile body
Frictional force between main body,
The outer sleeve 2 and prefabricated pile 3 are glass steel material, and the outer sleeve 2 is elongated to be arranged on the pile body main body
Periphery, the cross section of the pile body main body is circle.
The piling strtucture is made up of outer sleeve 2, prefabricated pile 3, and working procedure is as follows：
1) outer sleeve 2 is transferred after drill hole of drilling machine；
2) prefabricated pile 3 is transferred in outer sleeve 2；
3) lubricant 4 is filled between outer sleeve 2 and prefabricated pile.
Embodiment 2
As shown in Fig. 2 for a kind of piling strtucture for reducing side friction, it includes pile body main body and outer sleeve 2, Yi Jirun
Lubrication prescription 4, wherein,
The pile body main body uses the pilework formed using in-site pouring, and top and the supporting station of the pile body main body connect
Connect, its bottom is stretched into supporting course and played a supporting role；
The outer sleeve 2 is set in the periphery of the pile body main body, and the soil layer of side is separated with pile body main body, and described
Supporting course and fixation are stretched into the bottom of outer sleeve 2；
Gap location is filled with lubricant 4 between the pile body main body and outer sleeve 2, for reducing outer sleeve and the pile body
Frictional force between main body,
The concrete perfusion that the pilework that the in-site pouring forms includes inner sleeve 6 and is poured in inner sleeve 6 is formed
Bored concrete pile 5, bored concrete pile reinforcing bar 7 is additionally provided with the bored concrete pile 5 and is strengthened, the outer sleeve 2 is elongated to be arranged on the stake
The periphery of body main body, the material of the outer sleeve 2 and inner sleeve 6 are or PVC.The cross section of the pile body main body is circle.
The piling strtucture is made up of outer sleeve 2, inner sleeve 6, bored concrete pile 5, and working procedure is as follows：
1) drill hole of drilling machine, outer sleeve 2 is then transferred；
2) inner sleeve 6 is transferred to outer sleeve 2, the diameter of outer sleeve 2 is more than inner sleeve 6；
3) lubricant 4 is filled between two sleeves；
4) bored concrete pile reinforcing bar 7 is prepared in inner sleeve 6；
5) concrete perfusion in inner sleeve 6.
The solution of new utility model, theory is advanced, and design theory is clear, and challenge is simplified, and has design
Simply, construct it is convenient, reduce investment outlay, the advantages that structure is safe and reliable, in the deformation sensitive engineering protection such as track traffic field
With preferable application prospect.
As it will be easily appreciated by one skilled in the art that preferred embodiment of the present utility model is the foregoing is only, not
To limit the utility model, any modification of all made within spirit of the present utility model and principle, equivalent substitution and change
Enter, should be included within the scope of protection of the utility model.
Claims (6)
1. a kind of piling strtucture for reducing side friction, it is characterised in that it includes pile body main body and outer sleeve (2), Yi Jirun
Lubrication prescription (4), wherein,
The pilework that the pile body main body is used the prefabricated pile (3) of advance comprising or formed using in-site pouring, the pile body master
The supporting course of underground is stretched into the top of body and the supporting station connection of piling strtucture, its bottom；
The outer sleeve (2) is set in the periphery of the pile body main body, and the soil layer of side is separated with pile body main body, and described outer
Supporting course is also stretched into the bottom of sleeve (2)；
Lubricant (4) is filled between the pile body main body and outer sleeve (2) in gap.
2. piling strtucture as claimed in claim 1, it is characterised in that the pilework that the in-site pouring forms includes inner sleeve
(6) bored concrete pile (5) of shaping and in inner sleeve (6) is irrigated, being additionally provided with bored concrete pile reinforcing bar (7) in the bored concrete pile (5) enters
Row is strengthened.
3. piling strtucture as claimed in claim 1 or 2, it is characterised in that the material of the prefabricated pile (3) or bored concrete pile (5)
For fiberglass or armored concrete material.
4. piling strtucture as claimed in claim 3, it is characterised in that the outer sleeve (2) part sets or elongated is arranged on
The periphery of the pile body main body.
5. piling strtucture as claimed in claim 3, it is characterised in that the material of the outer sleeve (2) and inner sleeve (6) is steel
Material, glass fibre or PVC.
6. piling strtucture as claimed in claim 4, it is characterised in that the cross section of the pile body main body is circular or polygon
Shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720835362.1U CN207176713U (en) | 2017-07-11 | 2017-07-11 | A kind of piling strtucture for reducing side friction |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720835362.1U CN207176713U (en) | 2017-07-11 | 2017-07-11 | A kind of piling strtucture for reducing side friction |
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| CN207176713U true CN207176713U (en) | 2018-04-03 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107190762A (en) * | 2017-07-11 | 2017-09-22 | 中铁第四勘察设计院集团有限公司 | A kind of piling strtucture for reducing side friction |
| CN109738480A (en) * | 2019-03-28 | 2019-05-10 | 凌贤长 | A kind of the frost heave device and its monitoring method of scene comprehensive monitoring soil |
| CN110387868A (en) * | 2019-08-02 | 2019-10-29 | 沙焕焕 | A kind of pre- sedimentation method for processing foundation |
| CN110409519A (en) * | 2019-07-17 | 2019-11-05 | 中国建筑第八工程局有限公司 | The verifying attachment and detection method of super-large diameter end-bearing pile bearing capacity |
-
2017
- 2017-07-11 CN CN201720835362.1U patent/CN207176713U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107190762A (en) * | 2017-07-11 | 2017-09-22 | 中铁第四勘察设计院集团有限公司 | A kind of piling strtucture for reducing side friction |
| CN109738480A (en) * | 2019-03-28 | 2019-05-10 | 凌贤长 | A kind of the frost heave device and its monitoring method of scene comprehensive monitoring soil |
| CN109738480B (en) * | 2019-03-28 | 2021-11-19 | 凌贤长 | On-site comprehensive soil frost heaving monitoring device and monitoring method thereof |
| CN110409519A (en) * | 2019-07-17 | 2019-11-05 | 中国建筑第八工程局有限公司 | The verifying attachment and detection method of super-large diameter end-bearing pile bearing capacity |
| CN110387868A (en) * | 2019-08-02 | 2019-10-29 | 沙焕焕 | A kind of pre- sedimentation method for processing foundation |
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