CN107905222A - Pile foundation lining material and apply the lining material prefabricated band bellend prestressing pipe pile construction method - Google Patents
Pile foundation lining material and apply the lining material prefabricated band bellend prestressing pipe pile construction method Download PDFInfo
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- CN107905222A CN107905222A CN201711188732.8A CN201711188732A CN107905222A CN 107905222 A CN107905222 A CN 107905222A CN 201711188732 A CN201711188732 A CN 201711188732A CN 107905222 A CN107905222 A CN 107905222A
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- 239000000463 material Substances 0.000 title claims abstract description 105
- 238000010276 construction Methods 0.000 title claims abstract description 39
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 92
- 229910052742 iron Inorganic materials 0.000 claims abstract description 46
- 238000013461 design Methods 0.000 claims abstract description 34
- 238000000034 method Methods 0.000 claims abstract description 25
- 239000004567 concrete Substances 0.000 claims abstract description 17
- 239000004568 cement Substances 0.000 claims abstract description 16
- 239000010881 fly ash Substances 0.000 claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 230000010412 perfusion Effects 0.000 claims abstract description 9
- 238000005553 drilling Methods 0.000 claims abstract description 8
- 239000007788 liquid Substances 0.000 claims abstract description 7
- 239000004570 mortar (masonry) Substances 0.000 claims description 23
- 239000003795 chemical substances by application Substances 0.000 claims description 17
- 238000010008 shearing Methods 0.000 claims description 12
- 150000001875 compounds Chemical class 0.000 claims description 11
- 238000002347 injection Methods 0.000 claims description 9
- 239000007924 injection Substances 0.000 claims description 9
- 238000002360 preparation method Methods 0.000 claims description 8
- 238000007906 compression Methods 0.000 claims description 7
- 230000006835 compression Effects 0.000 claims description 7
- 238000005086 pumping Methods 0.000 claims description 7
- 230000002528 anti-freeze Effects 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 239000011229 interlayer Substances 0.000 abstract description 2
- 239000002994 raw material Substances 0.000 abstract description 2
- 230000001681 protective effect Effects 0.000 abstract 1
- 239000004576 sand Substances 0.000 description 18
- 239000002689 soil Substances 0.000 description 11
- 230000003068 static effect Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 239000010410 layer Substances 0.000 description 5
- 238000002156 mixing Methods 0.000 description 5
- 238000012797 qualification Methods 0.000 description 5
- 230000005855 radiation Effects 0.000 description 5
- 230000002787 reinforcement Effects 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 239000002131 composite material Substances 0.000 description 3
- 239000011435 rock Substances 0.000 description 3
- 238000007711 solidification Methods 0.000 description 3
- 230000008023 solidification Effects 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009414 blockwork Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Classifications
-
- 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
- E02D5/50—Piles comprising both precast concrete portions and concrete portions cast in situ
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
-
- 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
- E02D5/526—Connection means between pile segments
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
- E02D7/20—Placing by pressure or pulling power
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/0023—Cast, i.e. in situ or in a mold or other formwork
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- Engineering & Computer Science (AREA)
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- Chemical & Material Sciences (AREA)
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- Mining & Mineral Resources (AREA)
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- General Life Sciences & Earth Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
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- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
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- Organic Chemistry (AREA)
- Piles And Underground Anchors (AREA)
Abstract
A kind of pile foundation lining material and the lining material prefabricated band bellend prestressing pipe pile construction method is applied, it is iron milltailings that pile foundation lining material, which includes component and its weight proportion,：Cement：Flyash：Water=(4~5)：(1~1.2)：(0.15)：(1.2~1.4).Construction method step is：After drilling, sill must be served as a contrast by taking raw material to mix by proportioning, inject in borer drill rod, perfusion extremely perfusion absolute altitude, prefabricated band bellend pile for prestressed pipe is pressed into projected depth, compacted lining sill makes that it is combined closely with prefabricated band bellend pile for prestressed pipe and its liquid level of lifting is to 0.5~1.0m of stake top at the same time, pile foundation lining material is conserved to design strength, completion and applies the lining material prefabricated band bellend prestressing pipe pile construction process.The problems such as pile foundation lining material of the present invention is environmentally protective, and saves pile foundation concrete, and solution Pile Bearing Capacity, stake are combined with ground interlayer load transmission, stake with superstructure, while production cost is substantially reduced, production efficiency is improved, is had wide range of applications.
Description
Technical field：
The invention belongs to industrial residue utilization and building foundation domain technology field, and in particular to a kind of pile foundation lining material
And the prefabricated band bellend prestressing pipe pile construction method using the lining material.
Background technology：
Existing prestressing pipe pile construction technique generally uses and squeezes into two methods of method or static pressure method.For harder ground
Layer squeezes into method or the presence of static pressure method both of which is difficult to through firm hard formation and pile top is seated suitable bearing course at pile end
Difficulty；And due in the construction of existing pile for prestressed pipe, to meet the requirement of injection stratum penetrativeness in pile driving construction, stake
Body concrete and the arrangement of reinforcement of stake have all especially carried out strengthening design, cause the waste of material to a certain extent.
It is the common processes of foundation pile using auger boring technique, there is wide application environment, applicable cohesive soil,
The formation conditions such as sandy soil, rubble class soil and strongly weathered sand-rock.At present, the construction of spiral pore-creating filling pile uses present walling pile substantially
The technique of body concrete, rear insertion steel reinforcement cage.Pile concrete quality easily is influenced to make by stratum extruding and casting concrete process
Into isolation, necking down, broken pile can be caused when serious.
Iron milltailings are the ore waste residues formed with iron ore digging and ore dressing.Generally about 3~5m can be formed by adopting one ton of iron ore3
Tailing, the annual mining activity in China forms substantial amounts of iron tailings.Discharge, the accumulation of tailing occupy substantial amounts of soil money
Source, while the dust formed also pollutes environment.The comprehensive utilization of tailing is all subject to national policy emphasis to rouse all the time
Encourage and support.Technology more ripe in terms of building has the blockwork being such as laid with for ground, for partly replacing at present
Concrete fine aggregate etc..The pile foundation lining material that iron milltailings mortar is used as to bored pile still belongs to blank.
Pile foundation is divided to mainly by construction technology two class of prefabricated pile and bored concrete pile, and wherein prefabricated pile has hammering, static pressure, shake
Dynamic, spiral four kinds of technique；Bored concrete pile has two kinds of mechanical hole building, manual pore-forming techniques.Auger is not used in the prior art
The design and construction of the pile for prestressed pipe of prefabricated band bellend are pressed into after the compound iron milltailings mortar of hole pumping.
The content of the invention：
The purpose of the present invention is overcome above-mentioned the shortcomings of the prior art, there is provided a kind of pile foundation lining material and apply the lining material
Prefabricated band bellend prestressing pipe pile construction method.
To achieve the above object, the present invention uses following technical scheme：
A kind of pile foundation lining material, including component and its weight proportion are iron milltailings：Cement：Flyash：Water=(4~5)：(1
~1.2)：(0.15)：(1.2~1.4).
The pile foundation lining material, according to the presetting period, the requirement of engineering such as final setting time and microthermal climate are antifreeze, corresponding
Add adulterating agent on the basis of cement proportion amount, the adulterating agent is retarder, the one or more in early strength agent or antifreezing agent.
Using the prefabricated band bellend prestressing pipe pile construction method of the pile foundation lining material, comprise the following steps：
Step 1, pile hole construction：
Stake holes is bored in relevant position, the diameter and depth of the stake holes are by depending on design requirement；
In the step 1, brill stake holes is carried out using twist bit.
In the step 1, a diameter of Dz of the stake holes, bottom hole depth reaches design bearing course at pile end.
Step 2, pile foundation lining material is prepared：
By proportioning, take respectively, iron milltailings：Cement：Flyash：Water=(4~5)：(1~1.2)：(0.15)：(1.2~
1.4)；It is stirred after mixing, compound iron milltailings mortar is formed, as pile foundation lining material；
In the step 2, the pile foundation lining material is in preparation process, according to the presetting period, final setting time and low
The requirement of engineering such as warm weather is antifreeze, add adulterating agent on the basis of corresponding cement proportion amount, and the adulterating agent is retarder, early
One or more in strong agent or antifreezing agent.
In the step 2, iron milltailings are the iron milltailings by radiation examinations qualification, and the iron milltailings are thin for tail powder
Sand and tail coarse sand are used as mortar fine aggregate in sand, tail.
Step 3, poured pile base lining material：
By in the pile foundation lining material injection borer drill rod of preparation, drilling rod is lifted in poured pile base lining material, pile foundation lining material is filled
The perfusion absolute altitude of note extremely design；
In the step 3, the injection mode of pile foundation lining material is：Using auger hollow conduit, filled using pumping mode
Pile foundation lining material is noted to the perfusion absolute altitude designed.
Step 4, piling：
By design position, press-in prefabricated band bellend pile for prestressed pipe is to projected depth, while compacted pile foundation lining material makes it
Combine closely with pile pile and its liquid level of lifting is to 0.5~1.0m of stake top, conserved to design strength, form solidifying body, completed
Using the prefabricated band bellend prestressing pipe pile construction process of the pile foundation lining material.
In the step 4, for pile foundation lining material after maintenance, compression strength reaches 6~12MPa.
In the step 4, prefabricated band bellend pile for prestressed pipe uses concrete prefabricated making, wherein, bellend with
Prefabricated band bellend pile for prestressed pipe one-time-concreting is molded.
In the step 4, prefabricated band bellend pile for prestressed pipe uses single-unit or more piece, except stake end pipe stake pile section band expands
Big end, bellend overall diameter are D, remaining pile pile pile section pile body overall diameter is d, prefabricated band bellend pile for prestressed pipe entirety ruler
It is very little so as to be completely placed into subject to stake holes, wherein, a diameter of D in enlarged end partial cross-section, Dz ＞ D ＞ d.
In the step 4, prefabricated band bellend pile for prestressed pipe pile extension position set pile protection hoop, the pile protection hoop with
Prefabricated band bellend pile for prestressed pipe pile section one-time-concreting is molded.
In the step 4, when prefabricated band bellend pile for prestressed pipe makes, shearing resistance rib is made in each pile section side surface
Bar, the shearing resistance cord are molded when making with pile pile one-time-concreting.
In the step 4, when being pressed into prefabricated band bellend pile for prestressed pipe, it will be enlarged by end and be placed in bottom, and jacked pile
Hold supporting course.
In the step 4, the pile section that prefabricated band bellend pile for prestressed pipe is located at bearing course at pile end part uses band to expand
The pile section of big end, the pile section of other parts use the pile section identical with pile body diameter.
In the step 4, the press mode of prefabricated band bellend pile for prestressed pipe is to be pressed into using static pressure method.
In the step 4, prefabricated band bellend pile for prestressed pipe process of press in is：After stake machine is in place, prefabricated band is expanded
Big end pile for prestressed pipe is hung to stake holes center, corrects pile body verticality, downward static pressure to projected depth.
Beneficial effects of the present invention：
(1) present invention forms compound iron milltailings mortar as pilework stake using industrial residues such as iron milltailings as raw material
Base lining material, the intensity of pile foundation lining material depend on the match ratio of compound iron milltailings mortar, batching mode using the present invention, its intensity
6~12MPa can be reached, can meet requirement of the prestressed pipe pile bearing capacity of prefabricated band bellend to intensity completely.Pile foundation
The load of pilework effectively can be transferred to stratum by the reinforcing body that lining material is formed, and give full play to the bearing capacity on stratum；
(2) pile for prestressed pipe with bellend is by setting shearing resistance cord to add the knot of compound iron milltailings mortar and pile pile
With joint efforts.The present invention is by setting bellend to improve bearing capacity of pile tip；
(3) present invention uses precasting process, can carry out industrialized production, substantially reduces production cost, improves production effect
Rate.The present invention is suitable for Design of Foundation and the construction on the stratum such as cohesive soil, sandy soil, rubble class soil and strongly weathered sand-rock, should
With in extensive range；
(4) compound iron milltailings mortar is formed by using industrial residue iron milltailings combination flyash and other adulterating agents, will
It is used as the pile foundation lining material of pile foundation, on the one hand advantageously accounts for environmental pollution caused by industrial residue；On the other hand also save significantly
About pile foundation concrete, reduces unnecessary waste of material, belongs to a kind of green environmental protection technique；
(5) the prefabricated band bellend prestressing pipe pile construction method of pile foundation lining material of the invention and the application lining material is well
Solves the problems such as bearing capacity, stake and load transmission, stake and combination of superstructure of ground interlayer of pile foundation；Present invention press-in resistance
Power is small, and drilling is easier to, and suitable for stratum such as cohesive soil, sand, rubble class soil and strong-weathered rocks, has a wide range of application, applicability
By force.
Brief description of the drawings：
Fig. 1 is the prefabricated band bellend pile for prestressed pipe structure chart of the embodiment of the present invention；
Fig. 2 is the sectional view of Fig. 1, wherein, figure (a) is Figure 1A-A faces sectional view, and figure (b) is Figure 1B-B faces sectional view；
Fig. 3 is the prefabricated band bellend pile for prestressed pipe and stake holes plan of the embodiment of the present invention；
Fig. 4 is the prefabricated band bellend pile for prestressed pipe and stake holes profile of the embodiment of the present invention；Wherein：
D0 is prefabricated band bellend prestressed pipe stake body interior diameter；
D is prefabricated band bellend prestressed pipe stake body overall diameter；
T is prefabricated band bellend prestressed pipe stake body thickness；
D is the bellend overall diameter of prefabricated band bellend pile for prestressed pipe；
B is the bellend circumferential direction width of prefabricated band bellend pile for prestressed pipe；
Dz is stake holes diameter.
Embodiment：
With reference to embodiment, the present invention is described in further detail.
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only the part of the embodiment in the present invention, and those of ordinary skill in the art exist
All other embodiments obtained under the premise of creative work are not made, belong to the scope of protection of the invention.
It is to be appreciated that the directional instruction (such as up, down, left, right, before and after ...) of institute is only used in the embodiment of the present invention
In explaining the relative position relation under a certain particular pose (as shown in drawings) between each component, motion conditions etc., if should
When particular pose changes, then directionality instruction also correspondingly changes correspondingly.
Vertical ultimate bearing capacity of single pile formula in technical code for building pile foundation is analyzed as follows：
Work as hb/d<When 5, λp=16hb/d (2)
Work as hbDuring/d >=5, λp=0.8 (3)
Q in formulauk：Vertical ultimate bearing capacity of single pile standard value；
u：The girth of stake；
qsi：The all i-th layer of native ultimate frictional resistance standard values of stake；
li：I-th layer of native thickness in the long scope of stake；
qpk：Stake end standard ultimate bearing capacity；
Aj：Hollow pile stake end net area,
Ap1：Hollow pile opening area,
Λp：Pile-end soil plug effect coefficient, for closing pile λp=1, for open stake by formula (2), (3) value；
hb：Stake end enters bearing stratum depth；
d：Hollow pile outside diameter；
d1：Hollow pile internal diameter.
Formula (1) shows that bearing capacity of single pile is mainly made of pile side friction and end resistance.
Vertical ultimate bearing capacity of single pile formula in technical code for building pile foundation is analyzed as follows：
The pile body stirrup of 5d scopes is not more than 100mm below stake top, and when meeting constructional reinforcement regulation as defined in specification：
N≤ΨcfcAps+0.9fy’As’ (4)
When pile body arrangement of reinforcement does not meet above-mentioned condition：
N≤ΨcfcAps (5)
In formula：N：Stake top axial compressive force design load；
Ψc：Foundation pile pile-formation process coefficient；
fc：Concrete axial compressive strength design load；
Aps：Pile body area of section；
fy’：Lengthways main steel bar compression strength design load；
As’：Lengthways main steel bar area of section.
Formula (4) and (5) show that stake top axial compressive force is undertaken by lengthways main steel bar in pile concrete and stake.
According to material mechanics principle, when the collateral resistance of stake plays a role, passed by composite mortar pile foundation lining material after solidification
Its side surface with stake is handed to, the shearing resistance rib as set by the cohesive force and stake side of composite mortar pile foundation lining material after solidifying and stake side surface
Bar is passed to pile body；When the end resistance of stake plays a role, served as a contrast by widened stake end section and mortar pile foundation after solidification
Material basal cross section shared, wherein passing through mortar and stake side table again by the end resistance that mortar pile foundation lining material basal cross section is shared after solidifying
Shearing resistance cord set by the cohesive force and pile body in face is passed to pile body.During simple computation, shearing resistance cord set by stake side can be made
For a kind of measure, composite mortar pile foundation lining material and the cohesive force of stake side surface after checking computations solidification are only considered.
Based on above theoretical foundation, the present invention provides a kind of pile foundation lining material and in advance should using the prefabricated band bellend of the lining material
Solenoid pile construction method, the prefabricated band bellend prestressing force being implanted into by being previously implanted the pile foundation lining material prepared in advance with rear static pressure
Pile pile, prefabricated band bellend pile for prestressed pipe have the bearing capacity of pile tip of bigger, form a kind of Novel pile foundation.According to building pile foundation
Technical specification combination the technology of the present invention feature, bearing capacity of single pile calculation formula are：
Q in formulauk：Vertical ultimate bearing capacity of single pile standard value；
u：The girth of stake；
qsi：The all i-th layer of native ultimate frictional resistance standard values of stake；
li：I-th layer of native thickness in the long scope of stake；
qpk：Stake end standard ultimate bearing capacity；
Ap：The total end area of prefabricated band bellend pile for prestressed pipe,
d：Prefabricated band bellend prestressed pipe stake body outside diameter.
Q in formula (6)pkApItem is due to that pile foundation lining material provides end resistance, can be fully achieved and closed by the present invention
Mouth stake effect.The pile foundation lining material designed by the present invention and the prefabricated band bellend prestressing pipe pile construction method using the lining material
The application range of pile for prestressed pipe can be expanded, and reduce the difficulty of former technique, improve the bearing capacity of stake.
In example 1 below~4：
Prefabricated band bellend prestressed pipe stake body mechanism is using national building standard design atlas 10G409《Prestressing force mixes
Solidifying soil pile pile》, what is be different from is that prefabricated band bellend prestressed pipe stake body adds shearing resistance cord, and especially adds expansion
Big end, prefabricated band bellend pile for prestressed pipe is interior to press technical code for building pile foundation configuration reinforcement, prefabricated band bellend prestressed pipe
Stake uses concrete through formwork, pours, health making, and concrete grade uses C20-C80, and bellend uses and prefabricated band expands
Pile for prestressed pipe is held with concrete and one-time-concreting shaping；Prefabricated band bellend pile for prestressed pipe structure diagram such as Fig. 1
It is shown, shown in the sectional view such as Fig. 2 (a) of A-A faces, shown in the sectional view such as Fig. 2 (b) of B-B faces；
The prefabricated band bellend pile for prestressed pipe is multi-section structure, and it is 6~12m often to save length, equal in pile section connecting pin
Equipped with pile protection hoop, pile protection hoop is molded with prefabricated band bellend pile for prestressed pipe pile section one-time-concreting；On the outside of pile body every spacing 1~
2m sets a shearing resistance cord, and shearing resistance cord is highly 20~50mm, and width is 10~20mm, and shearing resistance cord uses and prefabricated band
Bellend pile for prestressed pipe is with concrete and pours together；Bellend circumferential direction width b is 200~800mm；With bellend
Pile section is located at bearing course at pile end, and bellend overall diameter is D, and the pile section of other parts uses the pile section identical with pile body diameter, outside
Diameter is d, and interior diameter is d0, prefabricated band bellend pile for prestressed pipe overall dimensions so as to be completely placed into subject to stake holes,
Stake holes a diameter of Dz, Dz ＞ D ＞ d ＞ d0.
Embodiment 1
A kind of pile foundation lining material, including component and its weight proportion are iron milltailings：Cement：Flyash：Water=4：1：0.15：
1.2。
Using the prefabricated band bellend prestressing pipe pile construction method of the pile foundation lining material, comprise the following steps：
Step 1, pile hole construction：
Stake holes is bored in relevant position using twist bit, depending on the diameter Dz of the stake holes presses design requirement with depth, hole
Bottom depth reaches design bearing course at pile end；
Step 2, pile foundation lining material is prepared：
By proportioning, take respectively, iron milltailings：Cement：Flyash：Water=4：1：0.15：1.2；It is stirred, is formed after mixing
Compound iron milltailings mortar, as pile foundation lining material, the iron milltailings are iron milltailings by radiation examinations qualification, the iron tail
Sand is tail Extra-fine sand, sand and tail coarse sand are used as mortar fine aggregate in tail.
Step 3, poured pile base lining material：
By in the pile foundation lining material injection borer drill rod of preparation, using auger hollow conduit, using pumping mode, side irrigates
Pile foundation lining material side lifts drilling rod, and pile foundation lining material is irrigated to the perfusion absolute altitude of design；
Step 4, piling：
After stake machine is in place, by design position, prefabricated band bellend pile for prestressed pipe is hung to stake holes center, bellend is placed in
Bottom, corrects pile body verticality, and downward static-pressure precast band bellend pile for prestressed pipe makes bellend jacked pile to projected depth
Hold supporting course, while compacted pile foundation lining material makes that it is combined closely with pile pile and its liquid level of lifting is to stake top 0.7m, conserved to
Compression strength reaches 8.5MPa, forms solidifying body, and the prefabricated band bellend pile for prestressed pipe for completing the application pile foundation lining material is applied
Work process, prefabricated band bellend pile for prestressed pipe is with stake holes plan as shown in figure 3, profile is as shown in Figure 4.
Embodiment 2
A kind of pile foundation lining material, including component and its weight proportion are iron milltailings：Cement：Flyash：Water：Retarder=4：
1.2：0.15：1.2：0.002.
Using the prefabricated band bellend prestressing pipe pile construction method of the pile foundation lining material, comprise the following steps：
Step 1, pile hole construction：
Stake holes is bored in relevant position using twist bit, depending on the diameter Dz of the stake holes presses design requirement with depth, hole
Bottom depth reaches design bearing course at pile end；
Step 2, pile foundation lining material is prepared：
By proportioning, take respectively, iron milltailings：Cement：Flyash：Water：Retarder=4：1.2：0.15：1.2：0.002；Mixing
After be stirred, form compound iron milltailings mortar, as pile foundation lining material, the iron milltailings are iron by radiation examinations qualification
Tailings, the iron milltailings are tail Extra-fine sand, sand and tail coarse sand are used as mortar fine aggregate in tail.
Step 3, poured pile base lining material：
By in the pile foundation lining material injection borer drill rod of preparation, using auger hollow conduit, using pumping mode, side irrigates
Pile foundation lining material side lifts drilling rod, and pile foundation lining material is irrigated to the perfusion absolute altitude of design；
Step 4, piling：
After stake machine is in place, by design position, prefabricated band bellend pile for prestressed pipe is hung to stake holes center, bellend is placed in
Bottom, corrects pile body verticality, and downward static-pressure precast band bellend pile for prestressed pipe makes bellend jacked pile to projected depth
Hold supporting course, while compacted pile foundation lining material makes that it is combined closely with pile pile and its liquid level of lifting is to stake top 0.5m, conserved to
Compression strength reaches 12MPa, forms solidifying body, completes the prefabricated band bellend prestressing pipe pile construction of the application pile foundation lining material
Process, prefabricated band bellend pile for prestressed pipe is with stake holes plan as shown in figure 3, profile is as shown in Figure 4.
Embodiment 3
A kind of pile foundation lining material, including component and its weight proportion are iron milltailings：Cement：Flyash：Water：Early strength agent=5：
1：0.15：1.4：0.015.
Using the prefabricated band bellend prestressing pipe pile construction method of the pile foundation lining material, comprise the following steps：
Step 1, pile hole construction：
Stake holes is bored in relevant position using twist bit, depending on the diameter Dz of the stake holes presses design requirement with depth, hole
Bottom depth reaches design bearing course at pile end；
Step 2, pile foundation lining material is prepared：
By proportioning, take respectively, iron milltailings：Cement：Flyash：Water：Early strength agent=5：1：0.15：1.4：0.015；After mixing
It is stirred, forms compound iron milltailings mortar, as pile foundation lining material, the iron milltailings is the iron tail by radiation examinations qualification
Sand, the iron milltailings are tail Extra-fine sand, sand and tail coarse sand are used as mortar fine aggregate in tail.
Step 3, poured pile base lining material：
By in the pile foundation lining material injection borer drill rod of preparation, using auger hollow conduit, using pumping mode, side irrigates
Pile foundation lining material side lifts drilling rod, and pile foundation lining material is irrigated to the perfusion absolute altitude of design；
Step 4, piling：
After stake machine is in place, by design position, prefabricated band bellend pile for prestressed pipe is hung to stake holes center, bellend is placed in
Bottom, corrects pile body verticality, and downward static-pressure precast band bellend pile for prestressed pipe makes bellend jacked pile to projected depth
Hold supporting course, while compacted pile foundation lining material makes that it is combined closely with pile pile and its liquid level of lifting is to stake top 0.8m, conserved to
Compression strength reaches 6MPa, forms solidifying body, completes the prefabricated band bellend prestressing pipe pile construction of the application pile foundation lining material
Process, prefabricated band bellend pile for prestressed pipe is with stake holes plan as shown in figure 3, profile is as shown in Figure 4.
Embodiment 4
A kind of pile foundation lining material, including component and its weight proportion are iron milltailings：Cement：Flyash：Water：Antifreezing agent=5：
1.2：0.15：1.4：0.03.
Using the prefabricated band bellend prestressing pipe pile construction method of the pile foundation lining material, comprise the following steps：
Step 1, pile hole construction：
Stake holes is bored in relevant position using twist bit, depending on the diameter Dz of the stake holes presses design requirement with depth, hole
Bottom depth reaches design bearing course at pile end；
Step 2, pile foundation lining material is prepared：
By proportioning, take respectively, iron milltailings：Cement：Flyash：Water：Antifreezing agent=5：1.2：0.15：1.4：0.03；Mixing
After be stirred, form compound iron milltailings mortar, as pile foundation lining material, the iron milltailings are iron by radiation examinations qualification
Tailings, the iron milltailings are tail Extra-fine sand, sand and tail coarse sand are used as mortar fine aggregate in tail.
Step 3, poured pile base lining material：
By in the pile foundation lining material injection borer drill rod of preparation, using auger hollow conduit, using pumping mode, side irrigates
Pile foundation lining material side lifts drilling rod, and pile foundation lining material is irrigated to the perfusion absolute altitude of design；
Step 4, piling：
After stake machine is in place, by design position, prefabricated band bellend pile for prestressed pipe is hung to stake holes center, bellend is placed in
Bottom, corrects pile body verticality, and downward static-pressure precast band bellend pile for prestressed pipe makes bellend jacked pile to projected depth
Hold supporting course, while compacted pile foundation lining material makes that it is combined closely with pile pile and its liquid level of lifting is to stake top 1.0m, conserved to
Compression strength reaches 10.5MPa, forms solidifying body, and the prefabricated band bellend pile for prestressed pipe for completing the application pile foundation lining material is applied
Work process, prefabricated band bellend pile for prestressed pipe is with stake holes plan as shown in figure 3, profile is as shown in Figure 4.
Above example muscle is to illustrate technical scheme and unrestricted, although with reference to preferred embodiment to this hair
Bright to be described in detail, those skilled in the art, which should be appreciated that, to modify or wait to technical scheme
With replacing, without departing from the purpose and scope of the invention, it should all cover in scope of the presently claimed invention.
Claims (9)
1. a kind of pile foundation lining material, it is characterised in that be including component and its weight proportion, iron milltailings：Cement：Flyash：Water=
(4~5)：(1~1.2)：(0.15)：(1.2~1.4).
2. pile foundation lining material according to claim 1, it is characterised in that the pile foundation lining material, according to presetting period, final set
The requirement of engineering such as time and microthermal climate are antifreeze, add adulterating agent, the adulterating agent on the basis of corresponding cement proportion amount
For retarder, the one or more in early strength agent or antifreezing agent.
3. the prefabricated band bellend prestressing pipe pile construction method of pile foundation lining material described in application claim 1, it is characterised in that bag
Include following steps：
Step 1, pile hole construction：
Stake holes is bored in relevant position, the diameter and depth of the stake holes are by depending on design requirement；
Step 2, pile foundation lining material is prepared：
By proportioning, take respectively, iron milltailings：Cement：Flyash：Water=(4~5)：(1~1.2)：(0.15)：(1.2~1.4)；It is mixed
It is stirred after conjunction, compound iron milltailings mortar is formed, as pile foundation lining material；
Step 3, poured pile base lining material：
By in the pile foundation lining material of preparation injection borer drill rod, drilling rod is lifted in poured pile base lining material, by pile foundation lining material irrigate to
The perfusion absolute altitude of design；
Step 4, piling：
By design position, press-in prefabricated band bellend pile for prestressed pipe is to projected depth, while compacted pile foundation lining material makes itself and pipe
Stake is combined closely and its liquid level of lifting is to 0.5~1.0m of stake top, is conserved to design strength, forms solidifying body, completes application
The prefabricated band bellend prestressing pipe pile construction process of the pile foundation lining material.
4. prefabricated band bellend prestressing pipe pile construction method according to claim 3, it is characterised in that the step
In 3, the injection mode of pile foundation lining material is：Using auger hollow conduit, using pumping mode poured pile base lining material to design
Irrigate absolute altitude.
5. prefabricated band bellend prestressing pipe pile construction method according to claim 3, it is characterised in that the step
In 4, for pile foundation lining material after maintenance, compression strength reaches 6~12MPa.
6. prefabricated band bellend prestressing pipe pile construction method according to claim 3, it is characterised in that the step
In 4, prefabricated band bellend pile for prestressed pipe uses concrete prefabricated making, wherein, bellend and prefabricated band bellend prestressing force
Pile pile one-time-concreting is molded.
7. prefabricated band bellend prestressing pipe pile construction method according to claim 3, it is characterised in that the step
In 4, prefabricated band bellend pile for prestressed pipe pile extension position sets pile protection hoop, the pile protection hoop and prefabricated band bellend prestressing force
Pile pile pile section one-time-concreting is molded.
8. prefabricated band bellend prestressing pipe pile construction method according to claim 3, it is characterised in that the step
In 4, when prefabricated band bellend pile for prestressed pipe makes, shearing resistance cord, the shearing resistance cord are made in each pile section side surface
It is molded when making with pile pile one-time-concreting.
9. prefabricated band bellend prestressing pipe pile construction method according to claim 3, it is characterised in that the step
In 4, the pile section that prefabricated band bellend pile for prestressed pipe is located at bearing course at pile end part uses the pile section with bellend, other parts
Pile section use the pile section identical with pile body diameter.
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| CN109024562A (en) * | 2018-10-29 | 2018-12-18 | 中南大学 | A kind of long prefabricated tubular pile of major diameter and its construction method of classification propulsion |
| CN112281829A (en) * | 2020-11-09 | 2021-01-29 | 中国瑞林工程技术股份有限公司 | Composite pile foundation structure and construction method thereof |
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| CN108842837A (en) * | 2018-07-25 | 2018-11-20 | 青岛理工大学 | End-sealed cast pile with precast concrete enlarged footing |
| CN109024562A (en) * | 2018-10-29 | 2018-12-18 | 中南大学 | A kind of long prefabricated tubular pile of major diameter and its construction method of classification propulsion |
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Application publication date: 20180413 |