CN109914446A - A kind of strong skid resistance mini pile and its construction method of landslide-proofing - Google Patents
A kind of strong skid resistance mini pile and its construction method of landslide-proofing Download PDFInfo
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- CN109914446A CN109914446A CN201910289813.XA CN201910289813A CN109914446A CN 109914446 A CN109914446 A CN 109914446A CN 201910289813 A CN201910289813 A CN 201910289813A CN 109914446 A CN109914446 A CN 109914446A
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- mini pile
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- 238000010276 construction Methods 0.000 title claims abstract description 17
- 239000002689 soil Substances 0.000 claims abstract description 33
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 7
- 239000010959 steel Substances 0.000 claims abstract description 7
- 239000000945 filler Substances 0.000 claims abstract description 6
- 239000000203 mixture Substances 0.000 claims abstract description 3
- 230000002349 favourable effect Effects 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 4
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000010412 perfusion Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000007569 slipcasting Methods 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
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- Piles And Underground Anchors (AREA)
Abstract
The invention discloses the strong skid resistance mini piles and its construction method of a kind of landslide-proofing, mini pile including steel tube concrete pile, mini pile is by integrally connected and the upper pile cutoff that communicates, middle pile cutoff and lower pile cutoff composition, upper pile cutoff is cylinder, middle pile cutoff is shuttle shape column, lower pile cutoff is capitate column, upper pile cutoff and middle pile cutoff are mutually communicated the cavity to be formed and accommodate concrete, pile cutoff pile body one week in, it is opened up from top to bottom with there is through-hole, through-hole is used to overflow out of through-hole into the concrete of mini pile cavity, and it flows into the soil body of landslide and forms anti-skidding branch, anti-skidding branch be used for the contact area by increasing filler and the soil body come and increase the anti-skidding power of mini pile；The present invention by opening up hole in miniature stake body so that into mini pile filler by hole flow into the soil body in form anti-skidding branch, increase the contact area between the soil body and mini pile, increase skid resistance, can effectively prevent landslide phenomenon generation.
Description
[technical field]
The invention belongs to preventing land slide field more particularly to the strong skid resistance mini piles and its construction party of a kind of landslide-proofing
Method.
[background technique]
China mountain area is more, and it is each that some areas are easy to appear collapsing, cracking, the barricade changing of the relative positions after railway construction or highway
Kind landslide disaster accident, and there is the office of itself in domestic at present common landslip treatmant technology such as friction pile, prestress anchorage cable
It is sex-limited.Prestress anchorage cable need to carry out tensioning several times and slip casting, complex process, and construction point and be distributed in entire reinforcing slope surface, construction
Equipment removal of home difficulty etc..Open cut tunnel cost is high, difficulty of construction is big, long in time limit.Friction pile processing landslide construction equipment is small, is suitable for narrow
Narrow work zone；Construction Vibration, noise are small, the urban district being strictly controlled suitable for public hazards；Slenderness ratio is big, and single pile consumes
Material is few.
Existing mini pile anti-slide performance is poor, can not effectively prevent the generation of landslide phenomenon, and only relies on pile body and soil
The frictional force of contact level works, and frictional force is small, landslide-proofing effect is undesirable.
[summary of the invention]
The object of the present invention is to provide the strong skid resistance mini piles and its construction method of a kind of landslide-proofing, to solve mini pile
The problem of anti-slide performance difference.
The invention adopts the following technical scheme: a kind of strong skid resistance mini pile of landslide-proofing, including steel tube concrete pile
Mini pile, mini pile are made of integrally connected and the upper pile cutoff communicated, middle pile cutoff and lower pile cutoff, and upper pile cutoff is cylinder, middle pile cutoff
For shuttle shape column, lower pile cutoff is capitate column, and upper pile cutoff and middle pile cutoff are mutually communicated the cavity to be formed and accommodate concrete, along middle pile cutoff stake
Body one week is opened up from top to bottom with there is through-hole, and through-hole is used to overflow out of through-hole into the concrete of mini pile cavity, and flows into
Come down and form anti-skidding branch in the soil body, anti-skidding branch be used for the contact area by increasing filler and the soil body come and increase mini pile
Anti-skidding power.
Further, main pipeline is vertically arranged in the cavity of mini pile pile body, the outer wall of main pipeline is horizontal from top to bottom
Multiple subtubes are provided with, multiple subtubes are interconnected with main pipeline and radially arrange, and main pipeline and subtube are used
It is flowed into concrete and successively fills up the inner cavity of mini pile from bottom to top.
Further, inner tubal wall of the free end of subtube close to mini pile.
Further, the capitate column of lower pile cutoff is solid and is steel.
Further, the diameter of through-hole is 20mm, and each through-hole is in quincunx arrangement.
Further, upper pile cutoff accounts for the 3/10 of miniature stake body, and middle pile cutoff accounts for the 5/10 of miniature stake body, and lower pile cutoff accounts for micro-
The 2/10 of type stake body.
Further, the maximum diameter of pile of middle pile cutoff shuttle shape column is 2 times of the stake diameter of upper pile cutoff.
A kind of construction method of the strong skid resistance mini pile of landslide-proofing, comprises the steps of:
Based on the physical and mechanical experiment of soil, the parameter on landslide is determined, determine that the least favorable of side slope slides by Lizheng Software
Face, i.e. slip-crack surface；
Main pipeline and subtube are set in the inner cavity of mini pile；
Mini pile equipped with main pipeline and subtube is squeezed into the landslide soil body that need to be administered, the middle point of pile cutoff in guarantee
In on slip-crack surface；
It pressurizes from the upper end of main pipeline and injects concrete, concrete passes sequentially through main pipeline from bottom to top, along subtube
It injects in mini pile pile body；
Continue to pressurize, after concrete fills up the inner cavity of mini pile, concrete is overflowed by the through-hole of mini pile, and is flowed into
The soil body that comes down is interior to form anti-skidding branch.
The beneficial effects of the present invention are: by opening up hole in miniature stake body, so that into the filler of mini pile
It is flowed into the soil body by hole and forms anti-skidding branch, increased the contact area between the soil body and mini pile, increase skid resistance, it can
Effectively to prevent the generation of landslide phenomenon；By setting shuttle shape for the lower end of mini pile, the requirement of construction is reduced, is reduced
The workload of construction reduces frictional force of the mini pile when piling is buried, reduces costs.
[Detailed description of the invention]
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is vertical structure schematic diagram of the invention；
Fig. 3 is piping schematic of the invention；
Fig. 4 is effect diagram of the invention.
Wherein: pile cutoff on 1.；Pile cutoff in 2.；3. lower pile cutoff；4. through-hole；5. main pipeline；6. subtube；7. anti-skidding branch.
[specific embodiment]
The following describes the present invention in detail with reference to the accompanying drawings and specific embodiments.
The invention discloses a kind of strong skid resistance mini piles of landslide-proofing, as shown in Figure 1, including mini pile by integrally connected
And upper pile cutoff 1, middle pile cutoff 2 and lower pile cutoff 3 composition communicated, upper pile cutoff 1 is cylinder, and middle pile cutoff 2 is shuttle shape column, and lower pile cutoff 3 is
Capitate column, upper pile cutoff 1 and middle pile cutoff 2 are mutually communicated the cavity to be formed and accommodate concrete, along middle 2 pile body of pile cutoff one week, from upper and
Under open up with there is a through-hole 4, the concrete that through-hole 4 is used to enter in mini pile cavity is overflowed out of through-hole 4, and flows into the landslide soil body
Interior to form anti-skidding branch 7, anti-skidding branch 7 is used for the contact area by increasing filler and the soil body and increases the anti-skidding power of mini pile.
The pile body of mini pile is divided into 3 sections, and upper pile cutoff 1 accounts for the 3/10 of miniature stake body, and middle pile cutoff 2 accounts for the 5/ of miniature stake body
10, lower pile cutoff 3 accounts for the 2/10 of miniature stake body, when mini pile is vertically squeezed into the soil body of landslide, and middle pile cutoff 2 is located at simulation landslide
In the 1m of slip-crack surface respectively up and down, the maximum diameter of pile of middle 2 shuttle shape column of pile cutoff is 2 times of the stake diameter of upper pile cutoff 1, in order to add
Gu landslide induced is reinforced using mini pile, landslide induced feature shallow failure, the thickness degree that comes down will be stretched in 4~5m
The middle pile cutoff 2 for entering the layer that comes down is set as shuttle-type column, and stake diameter increases, the contact area of pile cutoff 2 and the soil body in increase, in mini pile
It is to increase mini pile and the coefficient skid resistance of soil in order to increase reinforcing area, open up in middle pile cutoff 2 that pile cutoff 2, which increases stake diameter,
Through-hole 4 keeps globality between mini pile and the soil body more preferable, the skid resistance of landslide surface increases, and makes pile body antiskid to reinforce pile body
Power is not fully exerted, and not only strengthens the soil body of landslide surface or more, but also the skid resistance of landslide surface increases, the peace of most dangerous surface
Overall coefficient improves.
The capitate column of pile cutoff 3 is solid and is steel under mini pile.Setting capitate for lower pile cutoff 3 is to reduce and connect
Contacting surface product increases into soil stress, and anchoring is more labor-saving solid, reinforces stack layer soil landslide, avoids that big calamity occurs when geological process
It is difficult.
As shown in Figures 2 and 3, vertically it is arranged with main pipeline 5 in the cavity of mini pile pile body, the outer wall of main pipeline 5 is from upper
And lower level is provided with multiple subtubes 6, multiple subtubes 6 are interconnected and radially arrange, main pipeline 5 with main pipeline 5
It is used to the inner cavity that concrete flows into and successively fills up mini pile from bottom to top with subtube 6, the free end of subtube 6 is close to micro-
The inner tubal wall of type stake, concrete is introduced into main pipeline 5 when grouting, and reaches the bottom of main pipeline 5, then flows into from main pipeline 5
Subtube 6, each subtube 6 from bottom to top successively by the luminal perfusion of mini pile, be not in because concrete rapidly pour into it is micro-
In type stake, cause the air in mini pile that can not exclude from the top of mini pile, generates the phenomenon in pile body cavity, increase miniature
The antiskid slope ability of stake.
The invention also discloses a kind of construction methods of the strong skid resistance mini pile of landslide-proofing, comprise the steps of:
Based on the physical and mechanical experiment of soil, the parameter on landslide is determined, determine that the least favorable of side slope slides by Lizheng Software
Face, i.e. slip-crack surface；
Main pipeline 5 and subtube 6 are set in the inner cavity of mini pile；
Mini pile equipped with main pipeline 5 and subtube 6 is squeezed into the landslide soil body that need to be administered, in guarantee in pile cutoff 2
Point is located on slip-crack surface；
It pressurizes injection concrete from the upper end of main pipeline 5, concrete passes sequentially through main pipeline 5 from bottom to top, along being in charge of
Road 6 injects in mini pile pile body；
Continue to pressurize, after concrete fills up the inner cavity of mini pile, concrete is overflowed by the through-hole 4 of mini pile, cocurrent
The soil body that enters to come down is interior to form anti-skidding branch 7.
Embodiment 1
The thickness of steel pipe of mini pile is 8mm, and the long L of pile body is 10m, is divided into 3 sections, and upper pile cutoff 1 is 3m, and middle pile cutoff 2 is 5m, under
Pile cutoff 3 is 2m, and 1 diameter of pile cutoff is 400mm on mini pile, and the maximum diameter of pile of 2 shuttle shape column of pile cutoff is the stake of upper pile cutoff 1 in mini pile
2 times of diameter.
As shown in figure 4, through-hole 4 is provided with 6 rows, the spacing of through-hole 4 is 40mm, and the diameter of through-hole 4 is 20mm, each through-hole 4
In quincunx arrangement, through-hole 4 is opened up in middle pile cutoff 2 and reinforces landslide layer and its upper and lower 1m or so the soil body emphatically, increases most dangerous surface
Skid resistance increases safety coefficient.
Construction method of the invention, comprises the steps of:
Based on the physical and mechanical experiment of soil, the parameter on landslide is determined, determine that the least favorable of side slope slides by Lizheng Software
Face, i.e. slip-crack surface；
Main pipeline 5 and subtube 6 are set in the inner cavity of mini pile；
Mini pile equipped with main pipeline 5 and subtube 6 is squeezed into the landslide soil body that need to be administered, in guarantee in pile cutoff 2
Point is located on slip-crack surface；
It pressurizes injection concrete from the upper end of main pipeline 5, concrete passes sequentially through main pipeline 5 from bottom to top, along being in charge of
Road 6 injects in mini pile pile body；
Continue to pressurize, after concrete fills up the inner cavity of mini pile, concrete is overflowed by the through-hole 4 of mini pile, cocurrent
The soil body that enters to come down is interior to form anti-skidding branch 7.
Claims (8)
1. a kind of strong skid resistance mini pile of landslide-proofing, which is characterized in that the mini pile including steel tube concrete pile, it is described miniature
Stake is made of integrally connected and the upper pile cutoff (1) communicated, middle pile cutoff (2) and lower pile cutoff (3), and upper pile section (1) is cylinder, institute
Stating middle pile cutoff (2) is shuttle shape column, and lower pile section (3) is capitate column, and upper pile section (1) and middle pile cutoff (2) are mutually communicated shape
At the cavity for accommodating concrete, along middle pile cutoff (2) pile body one week, from top to bottom open up with having through-hole (4), the through-hole
(4) it for being overflowed into the concrete of mini pile cavity from through-hole (4) is interior, and flows into the soil body of landslide and forms anti-skidding branch (7), institute
State anti-skidding branch (7) for by the contact area that increases filler and the soil body come and increase the anti-skidding power of mini pile.
2. a kind of strong skid resistance mini pile of landslide-proofing according to claim 1, which is characterized in that the mini pile pile body
Cavity in be vertically arranged with main pipeline (5), the outer wall of the main pipeline (5) from top to bottom be horizontally disposed with have multiple subtubes
(6), multiple subtubes (6) are interconnected and radially arrange, the main pipeline (5) and subtube with main pipeline (5)
(6) it is used to the inner cavity that concrete flows into and successively fills up mini pile from bottom to top.
3. a kind of strong skid resistance mini pile of landslide-proofing according to claim 2, which is characterized in that the subtube (6)
Free end close to mini pile inner tubal wall.
4. a kind of strong skid resistance mini pile of landslide-proofing according to claim 3, which is characterized in that lower pile section (3)
Capitate column be solid and be steel.
5. a kind of strong skid resistance mini pile of landslide-proofing according to claim 1 to 4, which is characterized in that the through-hole
(4) diameter is 20mm, and each through-hole (4) is in quincunx arrangement.
6. a kind of strong skid resistance mini pile of landslide-proofing according to claim 1 to 4, which is characterized in that upper pile
Section (1) accounts for the 3/10 of miniature stake body, and middle pile cutoff (2) accounts for the 5/10 of miniature stake body, and lower pile cutoff (3) accounts for the 2/ of miniature stake body
10。
7. a kind of strong skid resistance mini pile of landslide-proofing according to claim 1 to 4, which is characterized in that the middle stake
The maximum diameter of pile of section (2) shuttle shape column is 2 times of the stake diameter of upper pile cutoff (1).
8. a kind of construction method of the strong skid resistance mini pile of landslide-proofing described in claim 1-7, which is characterized in that by following
Step composition:
Based on the physical and mechanical experiment of soil, determines the parameter on landslide, the least favorable sliding surface of side slope is determined by Lizheng Software, i.e.,
Slip-crack surface；
Main pipeline (5) and subtube (6) are set in the inner cavity of the mini pile；
The mini pile equipped with main pipeline (5) and subtube (6) is squeezed into the landslide soil body that need to be administered, guarantees the middle stake
The midpoint of section (2) is located on slip-crack surface；
It pressurizes injection concrete from the upper end of main pipeline (5), concrete passes sequentially through main pipeline (5) from bottom to top, along being in charge of
Road (6) injects in mini pile pile body；
Continue to pressurize, after concrete fills up the inner cavity of mini pile, concrete is overflowed by the through-hole (4) of mini pile, and is flowed into
The soil body that comes down is interior to form anti-skidding branch (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910289813.XA CN109914446A (en) | 2019-04-11 | 2019-04-11 | A kind of strong skid resistance mini pile and its construction method of landslide-proofing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910289813.XA CN109914446A (en) | 2019-04-11 | 2019-04-11 | A kind of strong skid resistance mini pile and its construction method of landslide-proofing |
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| CN109914446A true CN109914446A (en) | 2019-06-21 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113106992A (en) * | 2021-04-28 | 2021-07-13 | 西安工业大学 | Construction method of variable cross-section anchoring type micro pile |
| CN113322982A (en) * | 2021-04-28 | 2021-08-31 | 西安工业大学 | Method for managing landslide of accumulation layer |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006104761A (en) * | 2004-10-05 | 2006-04-20 | Public Works Research Institute | Method of increasing strength of landslide preventive pile |
| CN104018792A (en) * | 2014-06-25 | 2014-09-03 | 邢占东 | Reducing screw displacement pile drilling tool and construction method thereof |
| CN204456076U (en) * | 2015-03-11 | 2015-07-08 | 馆陶县金隅太行混凝土有限公司 | A kind of reinforced concrete pipe pile |
| CN105544513A (en) * | 2015-11-24 | 2016-05-04 | 江苏省电力公司连云港供电公司 | Steel pipe grouting pile |
| CN108487270A (en) * | 2018-06-15 | 2018-09-04 | 华东交通大学 | A kind of friction pile and construction method |
| CN209837054U (en) * | 2019-04-11 | 2019-12-24 | 西安工业大学 | Easily form miniature stake of skid proof branch |
-
2019
- 2019-04-11 CN CN201910289813.XA patent/CN109914446A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006104761A (en) * | 2004-10-05 | 2006-04-20 | Public Works Research Institute | Method of increasing strength of landslide preventive pile |
| CN104018792A (en) * | 2014-06-25 | 2014-09-03 | 邢占东 | Reducing screw displacement pile drilling tool and construction method thereof |
| CN204456076U (en) * | 2015-03-11 | 2015-07-08 | 馆陶县金隅太行混凝土有限公司 | A kind of reinforced concrete pipe pile |
| CN105544513A (en) * | 2015-11-24 | 2016-05-04 | 江苏省电力公司连云港供电公司 | Steel pipe grouting pile |
| CN108487270A (en) * | 2018-06-15 | 2018-09-04 | 华东交通大学 | A kind of friction pile and construction method |
| CN209837054U (en) * | 2019-04-11 | 2019-12-24 | 西安工业大学 | Easily form miniature stake of skid proof branch |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113106992A (en) * | 2021-04-28 | 2021-07-13 | 西安工业大学 | Construction method of variable cross-section anchoring type micro pile |
| CN113322982A (en) * | 2021-04-28 | 2021-08-31 | 西安工业大学 | Method for managing landslide of accumulation layer |
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