CN108532397A - It is a kind of that the method for roadbed and combined friction pile are consolidated using combined friction pile - Google Patents
It is a kind of that the method for roadbed and combined friction pile are consolidated using combined friction pile Download PDFInfo
- Publication number
- CN108532397A CN108532397A CN201810631423.1A CN201810631423A CN108532397A CN 108532397 A CN108532397 A CN 108532397A CN 201810631423 A CN201810631423 A CN 201810631423A CN 108532397 A CN108532397 A CN 108532397A
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- Prior art keywords
- circle
- barrette
- stake
- roadbed
- friction pile
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Links
- 238000000034 method Methods 0.000 title claims abstract description 17
- 229910000831 Steel Inorganic materials 0.000 claims description 19
- 239000010959 steel Substances 0.000 claims description 19
- 230000002787 reinforcement Effects 0.000 claims description 9
- 210000000481 breast Anatomy 0.000 claims description 6
- 239000011435 rock Substances 0.000 claims description 5
- 239000000945 filler Substances 0.000 claims description 4
- 239000011150 reinforced concrete Substances 0.000 claims description 4
- 230000003014 reinforcing effect Effects 0.000 claims description 3
- 239000004927 clay Substances 0.000 claims 1
- 238000010008 shearing Methods 0.000 abstract description 9
- 150000001875 compounds Chemical class 0.000 abstract description 3
- 238000005452 bending Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C3/00—Foundations for pavings
- E01C3/04—Foundations produced by soil stabilisation
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/20—Securing of slopes or inclines
- E02D17/207—Securing of slopes or inclines with means incorporating sheet piles or piles
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/52—Piles composed of separable parts, e.g. telescopic tubes ; Piles composed of segments
- E02D5/523—Piles composed of separable parts, e.g. telescopic tubes ; Piles composed of segments composed of segments
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- General Engineering & Computer Science (AREA)
- Architecture (AREA)
- Road Paving Structures (AREA)
Abstract
The present invention provides a kind of method consolidating roadbed using combined friction pile, specifically in several round stakes arranged below of the sliding surface of roadbed, the upper end of circle stake is connected with each other using a waist rail, barrette identical with circle stake quantity is connected on waist rail, combined friction pile is formed, the central axes of the central axes circle stake corresponding with below waist rail of the barrette overlap.The present invention further provides the structures of the combined friction pile, the friction pile includes circle stake, waist rail and barrette successively from bottom to up, the upper end of circle stake is connect with waist rail bottom surface, the lower end of barrette is connect with waist rail upper bottom surface, by using the compound section form of " circle stake+waist rail+barrette ", friction pile overall performance can be greatly improved, the shearing in Subgrade Landslide face is effective against, library bank highway subgrade is consolidated with this.
Description
Technical field
The present invention relates to high-fill roadbed antiskid technical fields, and in particular to a kind of to consolidate roadbed using combined friction pile
Method and its used anti-slide pile structure.
Background technology
For high-fill roadbed, embankment highest point is up to tens meters, and if when reservoir, river are closed in section,
It is influenced by reservoir area reserve-water-level fluctuation and river degradation, side forms shallow failure face to roadbed near water, leads to pavement cracking, sinks
Phenomena such as falling into, caving in.Reinforced concrete anti-slide pile is common structural measure in landslide control, and existing friction pile single pile is set
In meter, pile body is all usually vertical pile structure, fails to fully consider the comprehensive utilization of Rock And Soil and bending and shearing before and after stake
Spatial distribution characteristic.CN203782684U and CN104018495A has been all made of a kind of friction pile of the pile body equipped with crossbeam, tool
Body is and to be passed through landslide slide surface or side slope by the way that one or multi-channel horizontal gird is arranged at upright pile body certain depth
The plane of fracture is extend into good ground, achievees the purpose that enhance the anti-skid performance of friction pile.Above-mentioned friction pile in the prior art is equal
For single square pile, or in moment of flexure larger part it is changed to variable cross-section, stress can be concentrated more, and shear resistance is poor, increase in slip mass
Shi Rongyi bendings are toppled.Therefore, it is very necessary to design a kind of friction pile that anti-shear ability is strong.
Invention content
It is of the existing technology in order to solve the problems, such as, roadbed is consolidated using combined friction pile the present invention provides a kind of
Method is greatly improved friction pile overall performance, is effective against roadbed using the compound section form of " circle stake+waist rail+barrette "
The shearing of landslide surface consolidates library bank highway subgrade with this.
Technical solution provided by the invention is：
A kind of method of firm roadbed, specifically in several round stakes arranged below of the sliding surface of roadbed, the upper end of circle stake is adopted
It is connected with each other with a waist rail, barrette identical with circle stake quantity is connected on waist rail, forms combined friction pile, it is described
The central axes of the central axes of barrette circle stake corresponding with below waist rail overlap.
The circle stake pours to be formed below roadbed sliding surface by the way of mechanical punching.
Depending on the length for the roadbed that the quantity of the circle stake consolidates as needed.
The cross section of the circle stake is circle.
The spacing of the circle stake and circle stake diameter ratio are 1.5~3, preferably 2~2.5, between circle stake described herein
Away from the distance between the center of circle of circular cross-section for referring to round stake.
The ratio between distance of the central axes of the circle stake apart from road center line and circle stake cross-sectional diameter are 4~5, preferably
4.5。
All round stakes and barrette are connected as an entirety by the waist rail, and the width of waist rail is more than the diameter of circle stake, waist
The width of beam is preferably 1.1~1.2 with circle stake diameter ratio.The ratio between the thickness (or being height) of the waist rail and width are
0.9~1.1, the thickness of preferably waist rail is of same size with it.
Circle stake of the present invention and barrette are reinforced concrete structure.Wherein the cross section of barrette is pros
Shape.The cross section circle size of firm roadbed situation as needed, the circle stake can be designed as barrette square cross
The circumscribed circle in face or the size of inscribed circle.I.e. when for circumscribed circle, four vertex of the barrette square cross section are hung down
On the circumference for delivering directly the circular cross section that shadow all falls within round stake, i.e., the cross section circle of round stake is barrette square cross section
Circumscribed circle.When for inscribed circle, the four edges of barrette square section are tangent with the circular cross section circumference of circle stake respectively.
In order to improve the shear behavior of round stake, it is effective against the shearing in Subgrade Landslide face, in the round stake close to roadbed
In 1/2 section of side plus I-steel, longitudinal initial position of the I-steel is the bottom of circle stake, and lateral initial position is circle
Stake close to roadbed side 1/2 section in the radius midpoint extended radially outward, I-steel cross section from the midpoint to
Edge direction of the circle stake by roadbed side extends.The longitudinal length (or being height) of I-steel is the 1/2~3/ of circle stake height
4, preferably 2/3.
Preferably, in order to increase the intensity of round stake, in the longitudinal direction that the round stake doubles on the circumference of roadbed side
Reinforcing bar.
It is highly preferred that in order to increase the intensity of barrette, one is added on 1/2 edge of the barrette close to roadbed side
Longitudinal reinforcement again.
The height of the friction pile of the present invention is depending on practice of construction geology, it is desirable that it is not small that pile body is embedded in weak weathering layer depth
In 5 meters.
The height of the barrette is subject to substantially equal with road surface.
In the method for firm roadbed of the present invention, preferably with crushed rock filler between combined friction pile and road
It is filled, then fixes breast boards blocking rubble and fall, combined friction pile is set on the outside of breast boards, it is steady to play
Gu the effect of roadbed.
The present invention also provides a kind of combined friction piles for consolidating roadbed, and the structure of the combined friction pile is under
It is supreme to include successively：The upper end of circle stake, waist rail and barrette, circle stake is connect with waist rail bottom surface, the lower end of barrette and waist rail
Upper bottom surface connects, and the cross section of circle stake is circle, and barrette cross section is square, under the central axes and waist rail of the barrette
The central axes of the corresponding circle stake in side overlap.
The cross section circle of the circle stake can be designed as the circumscribed circle or inscribed circle of barrette square cross section.Work as
For circumscribed circle when, the upright projection on four vertex of the barrette square cross section all falls within the circular cross section of round stake
On circumference, i.e., the cross section circle of round stake is the circumscribed circle of barrette square cross section.When for inscribed circle, barrette is square
The four edges of tee section are tangent with the circular cross section circumference of circle stake respectively.
The center of circle of the circular cross section of circle stake is located on waist rail center line.
The width of the waist rail is more than the diameter of circle stake, and width and the circle stake diameter ratio of waist rail are 1.1~1.2, waist rail
The ratio between thickness (or be height) and its width be 0.9~1.1, the thickness of preferably waist rail is of same size with it.
In order to improve the shear behavior of round pile foundation, it is effective against the shearing in Subgrade Landslide face, stake of the present invention in circle stake
The longitudinal reinforcement to double on edge in 1/2 section of the back of the body (leaning on roadbed side).
Meanwhile in order to improve the shear behavior of round stake, it being effective against the shearing in Subgrade Landslide face, is preferably leaned in the round stake
In 1/2 section of the side of shortcut base plus I-steel, the initial position of the I-steel is justify stake close to roadbed side 1/2 section
The radius midpoint extended radially outward in face, I-steel extend from the midpoint to circle stake by the edge of roadbed side.Work
The length of word steel is 1/2~3/4, preferably the 2/3 of circle stake height.The quantity of I-steel is depending on the diameter of circle stake, I-shaped
The quantity of steel and circle stake diameter are proportional, and the quantity of I-steel of the present invention is 1~5, preferably 3.
The combined friction pile of the present invention is to connect multiple combined friction piles by waist rail to be used in conjunction with when in use, combination
Spacing and circle stake diameter ratio between type friction pile are 1.5~3, preferably 2~2.5.
The top of the combined friction pile of the present invention is in addition to requiring antiskid function, it is also necessary to have the function of earth-retaining, therefore
The present invention ensures the stabilization of roadbed, and increase in the pile body close to roadbed side and indulge using the larger barrette form in longitudinal cross-section
To reinforcing bar (arrangement of reinforcement), more increase the intensity of barrette.Since circular cross-section is more uniform compared with other shapes stress, be not in
A certain section stress is concentrated and is destroyed suddenly, and bending resistance, shear behavior are good, therefore the present invention is in the sliding surface for the roadbed for needing antiskid
Below using circle pile foundation, and increase I-steel and arrangement of reinforcement in corresponding shearing resistance section, further improves shear behavior, recycle
One campshed is linked together by waist rail, improves whole antiskid performance.
The present invention according to according to the force modes of friction pile, bending and shearing spatial distribution characteristic, in combination with height
The characteristics of filled-up ground, is designed, and makes full use of the design feature of each component part of friction pile, by circle stake and rectangular
Waist rail is set between stake, circle stake and square pile are preferably connected, forms compound section form, and in turn by several groups of friction piles
It is linked together, so other than having longitudinal single pile antiskid, lateral campshed antiskid is also added, to greatly improve friction pile
Overall performance.Combined anti-slide pile structure provided by the invention is reasonable, is easy to construct, and anti-slippery effect is good, is suitble in high roadbed
The antiskid field of roadbed is widely used.
Description of the drawings
Fig. 1 is that combined friction pile consolidates roadbed section figure.
Fig. 2 is combined anti-slide pile structure schematic diagram.
Fig. 3 is circle stake cross-sectional view.
Fig. 4 is barrette cross-sectional view.
Wherein, 1- justifies stake, 2- waist rails, 3- barrettes, 4- roadbeds sliding surface, 5- crushed rock fillers, 6- breast boards, 7- ordinary waters
Position, the road surfaces 8-, 9- stirrups, 10- longitudinal reinforcements, 11- I-steel.
Specific implementation mode
The method further illustrated the present invention below in conjunction with the accompanying drawings.
As shown in Figure 1, the roadbed of the specific implementation mode is high-fill roadbed, reservoir is closed in roadbed section, and ordinary water level 7 is such as
Shown in figure, the present invention uses the method for the firm roadbed of combined friction pile to pour several round stakes 1 in 4 or less roadbed sliding surface,
Circle stake body is embedded at least 5 meters of weak differentiation layer or less, and circle stake height is higher than roadbed sliding surface, and the upper end of each circle stake 1 uses a waist
Beam 2 is connected to an entirety, poured on waist rail and circle 1 quantity of stake it is equal and with the vertical corresponding barrette 3 of circle stake, side
The height of shape stake 3 is substantially equal with road surface 8, and combined friction pile is formed by circle stake 1, waist rail 2 and barrette 3.This is combined anti-
A breast boards 6 is arranged for stopping that rubble falls close to friction pile side in gap filling crushed rock filler 5 between sliding pile and road surface
It falls.In the specific implementation mode, circle stake 1 and barrette 3 are reinforced concrete structure, are built up using the form of pouring, wherein round
Stake uses drilling construction.Depending on the length for the roadbed that the quantity of combined friction pile consolidates as needed, the specific implementation mode
In spacing between combined friction pile be 2 with circle stake diameter ratio, distance of the combined friction pile apart from road center line
It is 4.5 times of circle stake diameter.
The combined anti-slide pile structure to be formed is poured in the method for the present invention as shown in Fig. 2, including circle stake successively from bottom to up
1, the upper end of waist rail 2 and barrette 3, circle stake is connect with waist rail bottom surface, and the lower end of barrette is connect with waist rail upper bottom surface, described
The barrette 3 of several round stakes 1 and identical quantity is connected as an entirety by waist rail.
Fig. 3 and Fig. 4 is respectively the cross-sectional view of circle stake 1 and barrette 3, wherein the cross section of round stake 1 is circle, side
The cross section of shape stake 3 is square, and the cross section circle of the circle stake is the inscribed circle of barrette cross section square.
In the specific implementation mode, waist depth of beam is 1/3 with circle stake diameter ratio, the center of circle of the circular cross section of circle stake
On waist rail center line, the width of waist rail is more than the diameter of circle stake, and width and the circle stake diameter ratio of waist rail are 1.15, waist rail
Thickness is of same size with it.
Preferably, in order to improve the shear behavior of round pile foundation, it is effective against the shearing in Subgrade Landslide face, in leaning on for circle stake
The longitudinal reinforcement 10 to double in the stirrup 12 of 1/2 circumference of shortcut base side.
It is highly preferred that adding I-steel in 1/2 section of the circle stake close to the side of roadbed, the initial position of I-steel is circle
The radius midpoint that extends radially outward of the stake in 1/2 section of roadbed side, I-steel are leaned on from the midpoint to circle stake
The edge of roadbed side extends, and the length of I-steel is the 2/3 of circle stake height.
In the specific implementation mode, barrette 3 is that cross section is square structure, in order to increase the intensity of shape stake, in institute
State the longitudinal reinforcement 10 that barrette 3 doubles in 1/2 stirrup 12 of roadbed side.
Claims (10)
1. a kind of method consolidating roadbed using combined friction pile, it is characterised in that arranged below several in the sliding surface of roadbed
The upper end of circle stake, circle stake is connected with each other using a waist rail, and barrette identical with circle stake quantity is connected on waist rail, is formed
The central axes of combined friction pile, the central axes circle stake corresponding with below waist rail of the barrette overlap.
2. the method according to claim 1 for consolidating roadbed using combined friction pile, it is characterised in that the circle stake exists
It pours to be formed below roadbed sliding surface, the spacing between the circle stake and circle stake diameter ratio are 1.5~3, the central axes of circle stake
Distance and circle stake circular cross section diameter ratio apart from road center line are 4~5.
3. the method according to claim 1 for consolidating roadbed using combined friction pile, it is characterised in that the circle stake
It is reinforced concrete structure with barrette, the cross section of the circle stake is circle, and the cross section of the barrette is square,
The circular cross section of the circle stake is sized so as to the size of the circumscribed circle or inscribed circle of barrette square cross section.
4. the method according to claim 1 for consolidating roadbed using combined friction pile, it is characterised in that the waist rail will
All circle stakes and barrette are connected as an entirety, and width and the circle stake diameter ratio of waist rail are 1.1~1.2, waist depth of beam
It is 0.9~1.1 with the ratio between its width.
5. the method according to claim 1 for consolidating roadbed using combined friction pile, it is characterised in that in the round stake
In 1/2 section of roadbed side plus I-steel, the longitudinal length of I-steel are the 1/2~3/4 of circle stake height.
6. the method according to claim 1 for consolidating roadbed using combined friction pile, it is characterised in that in the round stake
The longitudinal reinforcement to double in the stirrup of roadbed side adds one on 1/2 edge of the barrette close to roadbed side
Longitudinal reinforcement again.
7. the method according to claim 1 for consolidating roadbed using combined friction pile, it is characterised in that the barrette
Height be subject to it is substantially equal with road surface；It is filled using crushed rock filler between combined friction pile and road, then
A breast boards is fixed, combined friction pile is set on the outside of breast boards.
8. a kind of combined friction pile, it is characterised in that include circle stake, waist rail and barrette, the upper end of circle stake successively from bottom to up
It is connect with waist rail bottom surface, the lower end of barrette is connect with waist rail upper bottom surface, and the cross section of circle stake is circle, barrette cross section
It is square, the central axes of the central axes circle stake corresponding with below waist rail of the barrette overlap.
9. combined friction pile according to claim 8, it is characterised in that the circle stake and barrette are that reinforcing bar is mixed
The cross section of Xtah Crude Clay structure, the circle stake is circle, and the cross section of the barrette is square, the rounded cross section of the circle stake
Face is sized so as to the circumscribed circle of barrette square cross section or the size of inscribed circle.
10. combined friction pile according to claim 8, it is characterised in that circle stake and barrette are connected as by the waist rail
One entirety, width and the circle stake diameter ratio of waist rail are 1.1~1.2, and the ratio between waist depth of beam and its width are 0.9~1.1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810631423.1A CN108532397A (en) | 2018-06-19 | 2018-06-19 | It is a kind of that the method for roadbed and combined friction pile are consolidated using combined friction pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810631423.1A CN108532397A (en) | 2018-06-19 | 2018-06-19 | It is a kind of that the method for roadbed and combined friction pile are consolidated using combined friction pile |
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| Publication Number | Publication Date |
|---|---|
| CN108532397A true CN108532397A (en) | 2018-09-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810631423.1A Pending CN108532397A (en) | 2018-06-19 | 2018-06-19 | It is a kind of that the method for roadbed and combined friction pile are consolidated using combined friction pile |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109322315A (en) * | 2018-11-08 | 2019-02-12 | 中铁第四勘察设计院集团有限公司 | A kind of retaining structure and its construction method for high Steep Slope Embankment location |
| CN110172984A (en) * | 2019-06-17 | 2019-08-27 | 中交第三公路工程局有限公司 | A kind of concordant, landslide complicated geological environment roadbed side slope construction method |
| CN115162377A (en) * | 2022-07-28 | 2022-10-11 | 四川公路桥梁建设集团有限公司 | Variable-section combined slide-resistant pile with upper part and lower part being circular and construction method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109322315A (en) * | 2018-11-08 | 2019-02-12 | 中铁第四勘察设计院集团有限公司 | A kind of retaining structure and its construction method for high Steep Slope Embankment location |
| CN110172984A (en) * | 2019-06-17 | 2019-08-27 | 中交第三公路工程局有限公司 | A kind of concordant, landslide complicated geological environment roadbed side slope construction method |
| CN110172984B (en) * | 2019-06-17 | 2021-04-13 | 中交第三公路工程局有限公司 | Roadbed high slope construction method in bedding and landslide complex geological environment |
| CN115162377A (en) * | 2022-07-28 | 2022-10-11 | 四川公路桥梁建设集团有限公司 | Variable-section combined slide-resistant pile with upper part and lower part being circular and construction method thereof |
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