CN107964949A - A kind of pile foundation lining material and apply the pile foundation lining material prefabricated prestressing pipe pile construction method - Google Patents
A kind of pile foundation lining material and apply the pile foundation lining material prefabricated prestressing pipe pile construction method Download PDFInfo
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- CN107964949A CN107964949A CN201711188753.XA CN201711188753A CN107964949A CN 107964949 A CN107964949 A CN 107964949A CN 201711188753 A CN201711188753 A CN 201711188753A CN 107964949 A CN107964949 A CN 107964949A
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- 239000000463 material Substances 0.000 title claims abstract description 115
- 238000010276 construction Methods 0.000 title claims abstract description 33
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 100
- 229910052742 iron Inorganic materials 0.000 claims abstract description 50
- 238000013461 design Methods 0.000 claims abstract description 33
- 239000004568 cement Substances 0.000 claims abstract description 16
- 239000010881 fly ash Substances 0.000 claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 230000010412 perfusion Effects 0.000 claims abstract description 10
- 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 25
- 239000004576 sand Substances 0.000 claims description 21
- 239000003795 chemical substances by application Substances 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 18
- 150000001875 compounds Chemical class 0.000 claims description 11
- 238000010008 shearing Methods 0.000 claims description 11
- 238000002347 injection Methods 0.000 claims description 9
- 239000007924 injection Substances 0.000 claims description 9
- 238000007906 compression Methods 0.000 claims description 7
- 230000006835 compression Effects 0.000 claims description 7
- 238000002360 preparation method Methods 0.000 claims description 7
- 238000005086 pumping Methods 0.000 claims description 7
- 230000003068 static effect Effects 0.000 claims description 7
- 238000012797 qualification Methods 0.000 claims description 5
- 230000005855 radiation Effects 0.000 claims description 5
- 230000002528 anti-freeze Effects 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 claims description 2
- 238000003466 welding Methods 0.000 claims description 2
- 239000004567 concrete Substances 0.000 abstract description 16
- 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
- 239000002689 soil Substances 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 5
- 239000010410 layer Substances 0.000 description 5
- 238000002156 mixing Methods 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
- 238000007711 solidification Methods 0.000 description 4
- 230000008023 solidification Effects 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- -1 wherein Substances 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000011435 rock Substances 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
- 239000000428 dust Substances 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
- 238000003825 pressing Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 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
- E02D5/52—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
-
- 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
- C04B28/02—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 containing hydraulic cements other than calcium sulfates
-
- 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
- E02D5/48—Piles varying in construction along their length, i.e. along the body between head and shoe, e.g. made of different materials along their length
-
- 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
- E02D5/58—Prestressed concrete piles
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00017—Aspects relating to the protection of the environment
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/56—Compositions suited for fabrication of pipes, e.g. by centrifugal casting, or for coating concrete pipes
-
- 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/003—Injection of material
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0004—Synthetics
- E02D2300/0018—Cement used as binder
- E02D2300/002—Concrete
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Civil Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Piles And Underground Anchors (AREA)
Abstract
A kind of pile foundation lining material and the pile foundation lining material prefabricated 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, raw material is taken to be mixed to prepare pile foundation lining material by proportioning, it is injected into borer drill rod, perfusion extremely perfusion absolute altitude, prefabricated prestressing pipe pile is pressed into projected depth, while compacted pile foundation lining material makes that it combines closely with pile for prestressed pipe and its liquid level of lifting is to 0.5~1.0m of stake top, and pile foundation lining material is conserved to design strength, solidifying body is formed, the pile foundation lining material prefabricated prestressing pipe pile work progress is applied in completion.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 apply the pile foundation lining material prefabricated prestressing pipe pile construction method.
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 pile for prestressed pipe are pressed into after hole pumping iron milltailings mortar.
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 pile foundation
Lining material prefabricated 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 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 D 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, 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.
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.
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 prestressing pipe pile is to projected depth, while compacted pile foundation lining material makes itself and prestressing force
Pile pile is combined closely and its liquid level of lifting is to 0.5~1.0m of stake top, pile foundation lining material is conserved to design strength, forms solidification
The pile foundation lining material prefabricated prestressing pipe pile work progress is applied in body, completion.
In the step 4, for pile foundation lining material after maintenance, compression strength reaches 6~12MPa.
In the step 4, prefabricated prestressing pipe pile overall dimensions so as to be completely placed into subject to stake holes, wherein, it is prefabricated
Pile for prestressed pipe outside diameter is d, D ＞ d.
In the step 4, prefabricated prestressing pipe pile uses concrete prefabricated making.
In the step 4, prefabricated prestressing pipe pile uses single-unit or more piece, and pile extension position sets the pile protection for welding
Hoop, the pile protection hoop are molded with prefabricated prestressing pipe pile one-time-concreting.
In the step 4, when prefabricated prestressing pipe pile makes, shearing resistance cord is made in each pile section side surface, it is described
Shearing resistance cord make when with prefabricated prestressing pipe pile one-time-concreting be molded.
In the step 4, the press mode of prefabricated prestressing pipe pile is to be pressed into using static pressure method.
In the step 4, prefabricated prestressing pipe pile process of press in is：After stake machine is in place, prefabricated prestressing pipe pile is hung
To stake holes center, pile body verticality, downward static pressure to projected depth are corrected.
Beneficial effects of the present invention：
(1) pile foundation lining material of the invention forms compound iron milltailings mortar and makees using industrial residues such as iron milltailings as raw material
For pilework pile foundation lining material, the intensity of pile foundation lining material depends on the match ratio of compound iron milltailings mortar, dispensing using the present invention
Mode, its intensity can reach 6~12MPa, can meet requirement of the prestressed pipe pile bearing capacity to intensity, pile foundation lining material completely
The load of pilework effectively can be transferred to stratum by the reinforcing body of formation, give full play to the bearing capacity on stratum；
(2) prefabricated prestressing pipe pile of the invention by set shearing resistance cord add compound iron milltailings mortar with it is prefabricated pre-
The combination power of stress pile pile；
(3) compound iron milltailings mortar pile base lining material of the invention is largely used as using industrial residues such as iron milltailings and gathered materials, and one
Aspect advantageously accounts for environmental pollution caused by industrial residue；On the other hand pile foundation concrete is also greatlyd save, reduction need not
The waste of material wanted, environmental protection effect clearly, belong to a kind of green environmental protection technique；
(4) pile foundation lining material of the invention and can be solved well using the pile foundation lining material prefabricated prestressing pipe pile construction method
The problems such as bearing capacity of pile foundation, stake and load transmission, stake and combination of superstructure of ground interlayer, the present invention uses prefabricated work
Skill, can carry out industrialized production, substantially reduce production cost, improve production efficiency, and resistance of pressing in of the present invention is small, and drilling is relatively held
Easily, the Design of Foundation suitable for stratum such as cohesive soil, sandy soil, rubble class soil and strongly weathered sand-rocks and construction, application range
Extensively.
Brief description of the drawings：
Fig. 1 is prefabricated prestressing pipe pile structure diagram of the present invention；
Fig. 2 is prefabricated prestressing pipe pile of the present invention and stake holes plan；
Fig. 3 is prefabricated prestressing pipe pile of the present invention and stake holes profile；Wherein：
D0 is prefabricated prestressing pipe pile pile body interior diameter；
D is prefabricated prestressing pipe pile pile body overall diameter；
Dz is stake holes diameter.
Embodiment：
With reference to embodiment, the present invention is described in further detail, and described embodiment is only in the present invention
Part of the embodiment, the every other reality that those of ordinary skill in the art are obtained without making creative work
Example is applied, belongs 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, Aj=(d2-d1 2)；
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：
(1) the pile body stirrup of 5d scopes is not more than 100mm below stake top, and meets that constructional reinforcement as defined in specification provides
When：
N≤ΨcfcAps+0.9fy’As’ (4)
(2) 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, cut by stake end section and mortar pile foundation lining material bottom after solidification
Face shared, wherein passing through the viscous of mortar and stake side surface again by mortar pile foundation lining material basal cross section is shared after solidifying end resistance
Shearing resistance cord set by knot power and pile body is passed to pile body., can be using shearing resistance cord set by stake side as one kind during simple computation
Measure, only considers composite mortar pile foundation lining material and the cohesive force of stake side surface after checking computations solidification.
Based on above theoretical foundation, the present invention provides a kind of pile foundation lining material and applies the pile foundation lining material prefabricated prestressing pipe pile
Construction method, the pile for prestressed pipe being implanted into by being previously implanted pile foundation lining material with rear static pressure, forms a kind of Novel pile foundation.According to building
Standard for pile foundation combination the technology of the present invention feature is built, bearing capacity of single pile calculation formula is：
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 pile pile,
d：Prefabricated prestressing pipe pile 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 press-in pile for prestressed pipe that the auger boring designed by the present invention pumps the compound iron milltailings mortar of pile foundation lining material can
To expand the application range of pile for prestressed pipe, and the difficulty of former technique is reduced, improve the bearing capacity of stake.
By national building standard design atlas 10G409 in prefabricated prestressing pipe pile described in example 1 below~4《In advance should
Power concrete tubular pile》Configuration reinforcement, prefabricated prestressing pipe pile use concrete through formwork, pour, health making, concrete grade
Using C20-C80；
The prefabricated prestressing pipe pile structure diagram is as shown in Figure 1, be multi-section structure, it is 6~12m often to save length, is connect
Stake position is equipped with pile protection hoop, and a shearing resistance cord is set every 1~2m of spacing on the outside of pile body, and shearing resistance cord is highly 20~
50mm, width are 10~20mm, shearing resistance cord use with pile for prestressed pipe with concrete and together with pour, it is precast prestressed
Pile pile overall diameter d is 300~1200mm.
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 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 D of the stake holes presses design requirement with depth, 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=4：1：0.15：1.2；It is stirred, is formed after mixing
Compound iron milltailings mortar, as pile foundation lining material, wherein, 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：
Using auger hollow conduit, using pumping mode by the pile foundation lining material injection borer drill rod of preparation, 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 prestressing pipe pile is hung to stake holes center, corrects pile body verticality, to
Lower static-pressure precast pile for prestressed pipe is to projected depth, while compacted pile foundation lining material makes it combine closely with pile for prestressed pipe and lifting
Its liquid level conserves pile foundation lining material to compression strength to stake top 0.7m and reaches 8.5MPa, form solidifying body, completing application should
Pile foundation lining material prefabricated prestressing pipe pile work progress, prefabricated prestressing pipe pile is with stake holes plan as shown in Fig. 2, profile is as schemed
Shown in 3.
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 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 D of the stake holes presses design requirement with depth, 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：Retarder, early strength agent or antifreezing agent=4：1.2：
0.15：1.2：0.002；It is stirred after mixing, forms compound iron milltailings mortar, as pile foundation lining material, wherein, iron milltailings are warp
Qualified iron milltailings are examined in overshoot, and 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：
Using auger hollow conduit, using pumping mode by the pile foundation lining material injection borer drill rod of preparation, 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 prestressing pipe pile is hung to stake holes center, corrects pile body verticality, to
Lower static-pressure precast pile for prestressed pipe is to projected depth, while compacted pile foundation lining material makes it combine closely with pile for prestressed pipe and lifting
Its liquid level conserves pile foundation lining material to compression strength to stake top 0.5m and reaches 12MPa, form solidifying body, completing application should
Pile foundation lining material prefabricated prestressing pipe pile work progress, prefabricated prestressing pipe pile is with stake holes plan as shown in Fig. 2, profile is as schemed
Shown in 3.
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 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 D of the stake holes presses design requirement with depth, 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：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, wherein, iron milltailings are 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：
Using auger hollow conduit, using pumping mode by the pile foundation lining material injection borer drill rod of preparation, 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 prestressing pipe pile is hung to stake holes center, corrects pile body verticality, to
Lower static-pressure precast pile for prestressed pipe is to projected depth, while compacted pile foundation lining material makes it combine closely with pile for prestressed pipe and lifting
Its liquid level conserves pile foundation lining material to compression strength to stake top 0.8m and reaches 6MPa, form solidifying body, the stake is applied in completion
Base lining material prefabricated prestressing pipe pile work progress, prefabricated prestressing pipe pile is with stake holes plan as shown in Fig. 2, profile such as Fig. 3
It is shown.
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 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 D of the stake holes presses design requirement with depth, 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：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, wherein, 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：
Using auger hollow conduit, using pumping mode by the pile foundation lining material injection borer drill rod of preparation, 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 prestressing pipe pile is hung to stake holes center, corrects pile body verticality, to
Lower static-pressure precast pile for prestressed pipe is to projected depth, while compacted pile foundation lining material makes it combine closely with pile for prestressed pipe and lifting
Its liquid level conserves pile foundation lining material to compression strength to stake top 1.0m and reaches 10.5MPa, form solidifying body, complete application
The pile foundation lining material prefabricated prestressing pipe pile work progress, prefabricated prestressing pipe pile and stake holes plan as shown in Fig. 2, profile such as
Shown in Fig. 3.
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 prestressing pipe pile construction method of pile foundation lining material described in application claim 1, it is characterised in that including following step
Suddenly：
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 prestressing pipe pile is to projected depth, while compacted pile foundation lining material makes itself and pile for prestressed pipe
Combine closely and its liquid level of lifting be to 0.5~1.0m of stake top, pile foundation lining material is conserved to design strength, form solidifying body,
The pile foundation lining material prefabricated prestressing pipe pile work progress is applied in completion.
4. prefabricated prestressing pipe pile construction method according to claim 3, it is characterised in that in the step 2, iron tail
Sand is the iron milltailings by radiation examinations qualification, and the iron milltailings are tail Extra-fine sand, sand and tail coarse sand are thin as mortar in tail
Gather materials.
5. prefabricated prestressing pipe pile construction method according to claim 3, it is characterised in that in the step 3, pile foundation
The injection mode of lining material is：Using auger hollow conduit, using pumping mode poured pile base lining material to the perfusion absolute altitude designed.
6. prefabricated prestressing pipe pile construction method according to claim 3, it is characterised in that in the step 4, pile foundation
For lining material after maintenance, compression strength reaches 6~12MPa.
7. prefabricated prestressing pipe pile construction method according to claim 3, it is characterised in that prefabricated in the step 4
Pile for prestressed pipe uses single-unit or more piece, and pile extension position sets the pile protection hoop for welding, the pile protection hoop with it is precast prestressed
Pile pile one-time-concreting is molded.
8. prefabricated prestressing pipe pile construction method according to claim 3, it is characterised in that prefabricated in the step 4
When pile for prestressed pipe makes, make shearing resistance cord in each pile section side surface, the shearing resistance cord when making with it is prefabricated pre-
Stress pile pile one-time-concreting is molded.
9. prefabricated prestressing pipe pile construction method according to claim 3, it is characterised in that prefabricated in the step 4
The press mode of pile for prestressed pipe is to be pressed into using static pressure method.
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| CN102491702A (en) * | 2011-11-07 | 2012-06-13 | 江苏建华管桩有限公司 | Concrete pile and preparation method thereof |
| CN104929109A (en) * | 2015-05-20 | 2015-09-23 | 骆嘉成 | Replaceable press-grouted cement soil composite pile, construction method of replaceable press-grouted cement soil composite pile and long twist drill employed in construction method |
| CN105421449A (en) * | 2015-11-18 | 2016-03-23 | 杭州江润科技有限公司 | Construction method of composite pile composed of nail-shaped active material plastic sleeve and concrete stiffened core |
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