CN108532393A - A kind of Widening Embankment slope foundation hardened system and method - Google Patents
A kind of Widening Embankment slope foundation hardened system and method Download PDFInfo
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- CN108532393A CN108532393A CN201810404425.7A CN201810404425A CN108532393A CN 108532393 A CN108532393 A CN 108532393A CN 201810404425 A CN201810404425 A CN 201810404425A CN 108532393 A CN108532393 A CN 108532393A
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- embankment
- dike
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- stake
- widening
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- 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
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- 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
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/10—Deep foundations
- E02D27/12—Pile foundations
- E02D27/16—Foundations formed of separate piles
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
Abstract
The invention discloses a kind of Widening Embankment slope foundation hardened systems, on oblique original embankment, including stake in embankment substrate, Widening Embankment, rigid pile, dike and new pavement structure, rigid pile is inserted into side of the embankment substrate far from original embankment, Widening Embankment is arranged between new pavement structure and rigid pile, and side is bonded with original embankment, stake is mounted between new pavement structure and original embankment in dike, and is sequentially passed through Widening Embankment and original embankment and connect with embankment substrate.This hardened system inserts rigid pile in side of the embankment substrate far from original embankment, using rigid pile promoted the intensity of new whole embankment substrate, facilitates the reinforcement in later stage；Between Widening Embankment and original embankment by dike in stake reinforced, and stake can establish in original rigid pile in dike, improve intensity；The excavation for avoiding rigid pile and pile cover construction side slope on existing side slope of embankment simultaneously, reduces the cost of construction.
Description
Technical field
The present invention relates to building technical field more particularly to a kind of Widening Embankment slope foundation hardened system and methods.
Background technology
With the rapid development of economy, the growth rate of the developed regions volume of traffic is nearly all more than double figures, Hen Duogao
Fast highway is built up soon there have been traffic capacity deficiency, service level decline, is badly in need of reorganization and expansion.Moreover, the height that early stage is newly-built
Fast highway network status protrudes, and substantially belongs to the main line of communication of developed area, therefore enlarging, dilatation problem are especially prominent
Go out.
China has started to carry out widening and improving to arterial highway at present, for the difference for reducing between existing embankment and Widening Embankment
Different sedimentation avoids the occurrence of longitudinal crack, and Widening Embankment generally use rigid pile composite foundation is handled, in existing embankment slope foot
CFG, the rigid piles such as prefabricated pile, stake top setting armored concrete pile cover are respectively provided within the scope of outer and side slope.Stake within the scope of side slope
The above filled slope of cap is smaller, and the utilization rate and cost performance of pile cover be not high.Sequence of construction is：It first constructs outside existing embankment slope foot
Rigid pile and pile cover then on widening subgrade soil to existing side slope of embankment at first row rigid pile top surface, excavate existing side slope shape
It constructs again after pile and pile cover operation platform rigid pile and pile cover, continues to fill second on Widening Embankment soil to existing side slope of embankment
It arranges at rigid pile top surface, excavates existing side slope and form after stake and pile cover operation platform construct again rigid pile and pile cover, repeatedly
Widening Embankment soil is completed until filling.Therefore, rigid pile, pile cover, embankment soil need to construct several times, corresponding construction machinery and
Personnel need, repeatedly into withdrawing from the arena, to extend the duration, increase cost.In addition, rigid pile and pile cover construction need to excavate in side slope
Existing side is broken, also will produce adverse effect to existing slope stability.
Invention content
In order to overcome the above-mentioned deficiencies of the prior art, the present invention provides a kind of simple in structure, cost-effective, intensity is enough
Widening Embankment slope foundation hardened system；The invention also discloses a kind of construction is simples, effectively reduce construction molding material, embankment
The processing method of native construction machinery and personnel's advance and retreat play number.
The technical solution adopted by the present invention to solve the technical problems is：
A kind of Widening Embankment slope foundation hardened system is mounted on oblique original embankment, including embankment substrate,
Stake and new pavement structure in Widening Embankment, rigid pile, dike, the rigid pile are inserted into one of embankment substrate far from original embankment
Side, the Widening Embankment is arranged between new pavement structure and rigid pile, and side is bonded with original embankment, stake peace in the dike
Between new pavement structure and original embankment, and sequentially passes through Widening Embankment and original embankment and connect with embankment substrate.
As an improvement of the above technical solution, the rigid pile is equipped with several groups, and all rigid piles are being opened up in matrix distribution
In embankment substrate below broad way dike.
As an improvement of the above technical solution, the top of the rigid pile is equipped with native pile cover, the outer pressure of the soil pile cover
In embankment substrate, the upper end of the soil pile cover is connect with Widening Embankment bottom.
As an improvement of the above technical solution, the embankment substrate is located at the bottom corresponding position of stake in dike equipped with dike middle pipe
, bored pile is equipped in the dike between stake top portion and new pavement structure.
As an improvement of the above technical solution, the bored pile is made of rubble and/or medium coarse sand.
As an improvement of the above technical solution, pile pile is equipped with several groups in the dike, and along matrix distribution in original embankment
In the embankment substrate of underface.
A kind of Widening Embankment slope foundation reinforcement means, includes the following steps：
Step 1, former roadbed side slope finishing：Modify embankment substrate and original embankment so that original embankment gradient is 1：1.5~
1：1.75, scribing line, embankment base part place that is peaceful and widening required construction；
Step 2, construction reinforcement embankment basis：The construction pre-set density in new smooth embankment substrate on the outside of original embankment
Rigid pile, and native pile cover is molded on the top of rigid pile；
Step 3, construction Widening Embankment：Rammer is backfilled constructing the embankment substrate higher slice containing native pile cover and rigid pile
Soil is compacted rammed earth, and rammed earth top is consistent with original depth of fill, and it is 1 to modify side slope to be allowed to the gradient：1.5~1：1.75 obtaining
Widening Embankment；
Stake in step 4, molding dike：Widening Embankment top down after the completion of construction drills through dike mesoporous, at dike mesoporous bottom
Reinforced hole is drilled through by default in the embankment substrate in portion, pile pile in dike is molded in reinforced hole, is then molded in dike in dike mesoporous
Stake, and it is molded bored pile at the top of dike mesoporous；
Step 5 is laid with new pavement structure in the upper end of Widening Embankment, and is compacted new pavement structure, completes construction.
As an improvement of the above technical solution, step 2 concrete operations have following steps：
Step 2.1 marks off rigid pile institute on the outside of original embankment in new smooth embankment substrate according to preset specification
In position, drilling and the molded rigid stake in drilling on the position determined；
Step 2.2, after rigid forming pile, be molded columnar native pile cover at the top of rigid pile, the diameter of native pile cover needs big
In rigid pile diameter, the two diameter differs 0.3-0.4m.
As an improvement of the above technical solution, step 4 concrete operations have following steps：
Step 4.1 calculates stake distribution density in dike：It carries out calculating Widening Embankment slope foundation reinforcing side using following equation
Space D required between stake in dike in method；
π·du·τ·hP>D2·(hf·γf+Tp·γp+q)
In formula：
Du is the stake diameter of stake in dike, unit m；
τ is the friction coefficient of stake and surrounding soil in dike；
hPStake for stake in dike is long, unit m；
D is the spacing of stake in dike, unit m；
hf·Total height, unit m are filled for Widening Embankment and original embankment；
γfFor the severe of Widening Embankment material, unit kg；
TpFor the thickness of new pavement structure, unit m；
γpFor new pavement structure severe, unit kg；
Q is the load for the rear vehicle that is open to traffic after the completion of road construction, unit kPa；
F is roadbed material；
P is stake and new pavement structure in solid material, including dike；
Stake in step 4.2, drilling construction dike：In calculating dike after the density of stake, according to result of calculation in Widening Embankment
Upper mark goes out bore position, and the stake diameter du of stake drills in mark is according to preset dike, depth hf·,
To dike mesoporous bottom continue to drill through the forming hole of pile pile in dike, forming hole is smaller 0.1-0.15m than dike median pore diameter, hole depth 1-
10m；
Stake in pile pile and dike in step 4.3, molding dike：The mixing slurry of cement injection, flyash and rubble in forming hole
Carry out pile pile in molding dike；After pile pile in dike, stake in microdilatancy plain concrete molding dike is perfused in dike mesoporous, and in dike
Reserve the filling space that depth is du in hole top；
Step 4.4 fills rubble and/or medium coarse sand in filling space, and compacting obtains bored pile, the upper end of bored pile with
It is flushed above Widening Embankment.
Beneficial effects of the present invention have：
This hardened system inserts rigid pile in side of the embankment substrate far from original embankment, using rigid pile promoted new
The intensity of whole embankment substrate, facilitates the reinforcement in later stage；Between Widening Embankment and original embankment by dike in stake added
Gu and stake can establish in original rigid pile in dike, improve intensity；Secondly, stake in the dike in this hardened system
Upper end is also filled with light material, both ensure that the strength and stability on road surface after having constructed, while avoiding existing side slope of embankment
The excavation of upper rigid pile and pile cover construction side slope, also reduces construction molding material, embankment soil construction machinery and personnel and retreats
Play number reduces the cost of construction.
Description of the drawings
Below in conjunction with the accompanying drawings and specific embodiment the invention will be further described, wherein：
Fig. 1 is the structural schematic diagram of the embodiment of the present invention.
Specific implementation mode
Referring to Fig. 1, a kind of Widening Embankment slope foundation hardened system of the invention is mounted on oblique original embankment
On 1, including stake 5 and new pavement structure 6, the rigid pile 4 are inserted into embankment substrate 2, Widening Embankment 3, rigid pile 4, dike
Side of the embankment substrate 2 far from original embankment 1, the Widening Embankment 3 are arranged between new pavement structure 6 and rigid pile 4, and one
Side is bonded with original embankment 1, and stake 5 is mounted between new pavement structure 6 and original embankment 1 in the dike, and is sequentially passed through and widened
Embankment 3 and original embankment 1 are simultaneously connect with embankment substrate 2.
Wherein in the present embodiment, the rigid pile 4 is equipped with several groups, and all rigid piles 4 are widening road in matrix distribution
In the embankment substrate 2 of 3 lower section of dike, rigid pile 4 selects CFG or pile pile, and convenient for molding, manufacturing cost is low.The rigid pile 4
Top is equipped with native pile cover 7, and the outer of the soil pile cover 7 is pressed in embankment substrate 2, the upper end of the soil pile cover 7 and Widening Embankment 3
Bottom connects.Native pile cover 7 is made of reinforced concrete earth forming, can enhance the stress of 3 bottom of Widening Embankment using native pile cover 7
Situation, the vertical supporting power using rigid pile 4 are that native pile cover 7 provides stable support force, and the outer of native pile cover 7 is than rigid pile 4
Diameter is big, enhances the supporting role to Widening Embankment 3, keeps its stability.
In addition, in order to enhance the intensity that 3 top of Widening Embankment is attached to 1 part of original embankment, the present invention is in the embankment
The bottom corresponding position that substrate 2 is located at stake 5 in dike is equipped with pile pile 8 in dike, in the dike between 5 top of stake and new pavement structure 6
Equipped with bored pile 9.The bored pile 9 is made of rubble and/or medium coarse sand, the buffering of rubble or medium coarse sand, can avoid stake in dike
Road pavement structure generates punching effect.Pile pile 8 is equipped with several groups in the dike, and along matrix distribution immediately below original embankment 1
Embankment substrate 2 in.Pile pile 8 can select CFG or pile pile in dike, and convenient for molding, manufacturing cost is low.Utilize pile pile in dike 8
Stake 5 in dike are supported, the whole vertical supporting power of stake 5 in dike is improved, it is ensured that the new pavement structure 6 of 5 top of stake in dike
Stability prevents its sedimentation.Stake 5 is molded using microdilatancy plain concrete in dike, water, cement, sand, stone in microdilatancy plain concrete
The mass ratio of son and microdilatancy element is 0.41：1：1.084：2.036：0.08.
In the present invention, when the setting of rigid pile 4 facilitates later stage road and also needs to continue to widen, stake 5 can be direct in dike
It is molded in rigid pile 4, eliminates the trouble of pile pile 8 in molding dike, save a large amount of working hour and manpower and materials, having can hold
The effect of supervention exhibition, the excavation for side slope of constructing compared to rigid pile 4 on the existing side slope of embankment of tradition needs and native pile cover 7 are existing
Slope stability.
The invention also discloses a kind of Widening Embankment slope foundation reinforcement means, include the following steps：
Step 1, former roadbed side slope finishing：Modify embankment substrate 2 and original embankment 1 so that 1 gradient of original embankment is 1：
1.5~1：1.75, scribing line, 2 part place of embankment substrate that is peaceful and widening required construction；
Step 2, construction reinforcement embankment basis：It constructs in the new smooth embankment substrate 2 in the outside of original embankment 1 pre-set density
Rigid pile 4, and native pile cover 7 is molded on the top of rigid pile 4；
Step 3, construction Widening Embankment 3：Constructing 2 higher slice of the embankment substrate backfill containing native pile cover 7 and rigid pile 4
Rammed earth is compacted rammed earth, and rammed earth top is highly consistent with original embankment 1, and it is 1 to modify side slope to be allowed to the gradient：1.5~1：1.75
Obtain Widening Embankment 3；
Stake 5 in step 4, molding dike：3 top down of Widening Embankment after the completion of construction drills through dike mesoporous, in dike mesoporous
Reinforced hole is drilled through by default in the embankment substrate 2 of bottom, pile pile 8 in dike is molded in reinforced hole, is then molded in dike mesoporous
Stake 5 in dike, and bored pile 9 is molded at the top of dike mesoporous；
Step 5 is laid with new pavement structure 6 in the upper end of Widening Embankment 3, and is compacted new pavement structure 6, completes construction.
In the present embodiment, the gradient of side slope is 1：1.5,1 gradient of original embankment is 1：1.5, the two gradient is unanimously convenient for
Construction.
Wherein, in the present invention, step 2 concrete operations have following steps：
Step 2.1 according to preset specification marks off rigid pile 4 in the new smooth embankment substrate 2 in the outside of original embankment 1
Position, drilling and the molded rigid stake 4 in drilling on the position determined, rigid pile 4 is using CFG or manages
Stake, therefore be easier to be molded, low cost, it is enough in vertical intensity, can be that Widening Embankment 3 provides stable vertical supporting power；
Step 2.2, after the molding of rigid pile 4, in the columnar native pile cover 7 of the top of rigid pile 4 molding, the diameter of native pile cover 7
4 diameter of rigid pile need to be more than, the two diameter differs 0.3-0.4m, and Widening Embankment 3 and rigid pile 4 are enhanced using native pile cover 7
Effective bearing area, improves stability.Wherein, the density of rigid pile 4 can specifically be selected according to the concrete condition of reality
Select, can generally use and be consistent with the density of stake in dike 5, when the later stage being facilitated to need widening road, can in rigid pile 4 after
Stake 5 in continuous molding dike, saves construction cost.
In the present invention, step 4 concrete operations have following steps：
Step 4.1 calculates 5 distribution density of stake in dike：It carries out calculating the reinforcing of Widening Embankment slope foundation using following equation
Space D required between stake 5 in dike in method；
π·du·τ·hP>D2·(hf·γf+Tp·γp+q)
In above-mentioned formula：
Du is the stake diameter of stake 5 in dike, unit m；
τ is the friction coefficient of stake 5 and surrounding soil in dike；
hPStake for stake in dike 5 is long, unit m；
D is the spacing of stake 5 in dike, unit m；
hf·Total height, unit m are filled for Widening Embankment 3 and original embankment 1；
γfFor the severe of 3 material of Widening Embankment, unit kg；
TpFor the thickness of new pavement structure 6, unit m；
γpFor 6 severe of new pavement structure, unit kg；
Q is the load for the rear vehicle that is open to traffic after the completion of road construction, unit kPa；
F is roadbed material；
P is stake 5 and new pavement structure 6 in solid material, including dike；
Wherein, settings of the f as material type facilitates construction personnel to identify construction material, and convenient for construction, p facilitates construction
Differentiation of the personnel to construction material, even if avoiding looking at design drawing in the construction process and having used wrong material.γfWith
γpIt can calculate the weight in unit area, wherein Widening Embankment 3 and new road surface by known density of material
The thickness of structure 6 can measure, therefore weight can be found out.
Stake 5 in step 4.2, drilling construction dike：In calculating dike after the density of stake 5, road is being widened according to result of calculation
Mark goes out bore position on dike 3, and the stake diameter du of stake 5 drills in mark is according to preset dike, depth hf·,
Continue to drill through the forming hole of pile pile 8 in dike in obtained dike mesoporous bottom, forming hole is smaller 0.1-0.15m than dike median pore diameter, hole
It can be set deeply according to actual surface conditions；
Stake 5 in pile pile 8 and dike in step 4.3, molding dike：The mixing of cement injection, flyash and rubble in forming hole
Slurry carries out pile pile 8 in molding dike；After pile pile in dike 8, stake 5 in microdilatancy plain concrete molding dike is perfused in dike mesoporous, and
The filling space that depth is du is reserved on dike mesoporous top；
Step 4.4 fills rubble and/or medium coarse sand in filling space, and compacting obtains bored pile 9, the upper end of bored pile 9
It is flushed above with Widening Embankment 3.
In step 4, by the calculating of above-mentioned formula, the density of stake 5 in dike can be effectively calculated, avoids and excessively applies
Work either construction intensity is insufficient, and result in waste of resources the problems such as either 3 intensity of Widening Embankment is insufficient.
Finally, in the present invention, it is compacted colleague's car load that new pavement structure 6 generally uses in step 5, is common
Load measure, the present embodiment herein not be described in detail.
This hardened system inserts rigid pile 4 in side of the embankment substrate 2 far from original embankment 1, is carried using rigid pile 4
The intensity for rising new whole embankment substrate 2, facilitates the reinforcement in later stage；Between Widening Embankment 3 and original embankment 1 by dike in stake
5 are reinforced, and stake 5 can establish in original rigid pile 4 in dike, improve intensity；Secondly, in this hardened system
The upper end of stake 5 is also filled with light material in dike, both ensure that the strength and stability on road surface after having constructed, while avoiding existing
On side slope of embankment rigid pile 4 and pile cover construction side slope excavation, also reduce construction molding material, embankment soil construction machinery and
Personnel's advance and retreat play number, reduces the cost of construction.
The above, only better embodiment of the invention, but the present invention is not limited to above-described embodiments, as long as
It reaches the technique effect of the present invention with any same or similar means, should all belong to the scope of protection of the present invention.
Claims (9)
1. a kind of Widening Embankment slope foundation hardened system is mounted on oblique original embankment (1), it is characterised in that：
Including stake (5) in embankment substrate (2), Widening Embankment (3), rigid pile (4), dike and new pavement structure (6), the rigid pile
(4) it is inserted into side of the embankment substrate (2) far from original embankment (1), the Widening Embankment (3) is arranged in new pavement structure (6)
Between rigid pile (4), and side is bonded with original embankment (1), and stake (5) is mounted on new pavement structure (6) and original in the dike
Between having embankment (1), and sequentially passes through Widening Embankment (3) and original embankment (1) and connect with embankment substrate (2).
2. a kind of Widening Embankment slope foundation hardened system according to claim 1, it is characterised in that：The rigid pile
(4) several groups are equipped with, all rigid piles (4) are in embankment substrate (2) of the matrix distribution below Widening Embankment (3).
3. a kind of Widening Embankment slope foundation hardened system according to claim 1 or 2, it is characterised in that：The rigidity
The top of stake (4) is equipped with native pile cover (7), and the outer of the soil pile cover (7) is pressed in embankment substrate (2), the soil pile cover (7)
Upper end is connect with Widening Embankment (3) bottom.
4. a kind of Widening Embankment slope foundation hardened system according to claim 1, it is characterised in that：The embankment substrate
(2) the bottom corresponding position for being located at stake (5) in dike is equipped with pile pile (8) in dike, in the dike at the top of stake (5) with new pavement structure
(6) bored pile (9) is equipped between.
5. a kind of Widening Embankment slope foundation hardened system according to claim 4, it is characterised in that：The bored pile
(9) it is made of rubble and/or medium coarse sand.
6. a kind of Widening Embankment slope foundation hardened system according to claim 4, it is characterised in that：Pile pile in the dike
(8) several groups are equipped with, and in embankment substrate (2) of the matrix distribution immediately below original embankment (1).
7. a kind of Widening Embankment slope foundation reinforcement means, which is characterized in that include the following steps：
Step 1, former roadbed side slope finishing：Modify embankment substrate (2) and original embankment (1) so that original embankment (1) gradient is 1：
1.5~1：1.75, scribing line, embankment substrate (2) part place that is peaceful and widening required construction；
Step 2, construction reinforcement embankment basis：It constructs in new smooth embankment substrate (2) on the outside of original embankment (1) pre-set density
Rigid pile (4), and native pile cover (7) is molded on the top of rigid pile (4)；
Step 3, construction Widening Embankment (3)：Constructing embankment substrate (2) higher slice containing native pile cover (7) and rigid pile (4)
Rammed earth is backfilled, rammed earth is compacted, rammed earth top is highly consistent with original embankment (1), and it is 1 to modify side slope to be allowed to the gradient：1.5~1：
1.75, obtain Widening Embankment (3)；
Stake (5) in step 4, molding dike：Widening Embankment (3) top down after the completion of construction drills through dike mesoporous, in dike mesoporous
Reinforced hole is drilled through by default in the embankment substrate (2) of bottom, pile pile (8) in dike is molded in reinforced hole, then in dike mesoporous
It is molded stake (5) in dike, and is molded bored pile (9) at the top of dike mesoporous；
Step 5 is laid with new pavement structure (6) in the upper end of Widening Embankment (3), and is compacted new pavement structure (6), completes construction.
8. a kind of Widening Embankment slope foundation reinforcement means according to claim 7, which is characterized in that step 2 is specifically grasped
Work has following steps：
Step 2.1 marks off rigid pile on the outside of original embankment (1) in new smooth embankment substrate (2) according to preset specification
(4) position, drilling and molded rigid stake (4) in drilling on the position determined；
Step 2.2, after rigid pile (4) molding, the columnar native pile cover (7) of molding at the top of the rigid pile (4), native pile cover (7)
Diameter need to be more than rigid pile (4) diameter, and the two diameter differs 0.3-0.4m.
9. a kind of Widening Embankment slope foundation reinforcement means according to claim 7, which is characterized in that step 4 is specifically grasped
Work has following steps：
Step 4.1 calculates stake (5) distribution density in dike：It carries out calculating Widening Embankment slope foundation reinforcing side using following equation
Space D required between stake (5) in dike in method；
π·du·τ·hP>D2·(hf·γf+Tp·γp+q)
In formula：
Du is the stake diameter of stake (5) in dike, unit m；
τ is the friction coefficient of stake (5) and surrounding soil in dike；
hPStake for stake in dike (5) is long, unit m；
D is the spacing of stake (5) in dike, unit m；
hf·Total height, unit m are filled for Widening Embankment (3) and original embankment (1)；
γfFor the severe of Widening Embankment (3) material, unit kg；
TpFor the thickness of new pavement structure (6), unit m；
γpFor new pavement structure (6) severe, unit kg；
Q is the load for the rear vehicle that is open to traffic after the completion of road construction, unit kPa；
F is roadbed material；
P is stake in solid material, including dike (5) and new pavement structure (6)；
Stake (5) in step 4.2, drilling construction dike：In calculating dike after the density of stake (5), road is being widened according to result of calculation
Mark goes out bore position on dike (3), and the stake diameter du of stake (5) drills in mark is according to preset dike, and depth is
hf·, continue the forming hole for drilling through pile pile (8) in dike in obtained dike mesoporous bottom, forming hole is smaller 0.1- than dike median pore diameter
0.15m, hole depth 1-10m；
Stake (5) in pile pile (8) and dike in step 4.3, molding dike：The mixing of cement injection, flyash and rubble in forming hole
Slurry carries out pile pile (8) in molding dike；After pile pile in dike (8), stake in microdilatancy plain concrete molding dike is perfused in dike mesoporous
(5), and on dike mesoporous top the filling space that depth is du is reserved；
Step 4.4 fills rubble and/or medium coarse sand in filling space, and compacting obtains bored pile (9), the upper end of bored pile (9)
It is flushed above with Widening Embankment (3).
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113308956A (en) * | 2021-05-17 | 2021-08-27 | 浙大城市学院 | Construction method of pile-supported anchor rod foam concrete embankment structure |
| CN114673041A (en) * | 2022-03-23 | 2022-06-28 | 中国铁建港航局集团有限公司 | Soft soil foundation embankment disease disposal construction method |
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| CN114673041B (en) * | 2022-03-23 | 2023-09-05 | 中国铁建港航局集团有限公司 | Soft soil foundation embankment disease treatment construction method |
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