CN107794914A - A kind of combination post jacking and the prestressed concrete pipe pile of expanding technology and preparation method thereof - Google Patents
A kind of combination post jacking and the prestressed concrete pipe pile of expanding technology and preparation method thereof Download PDFInfo
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- CN107794914A CN107794914A CN201710986084.4A CN201710986084A CN107794914A CN 107794914 A CN107794914 A CN 107794914A CN 201710986084 A CN201710986084 A CN 201710986084A CN 107794914 A CN107794914 A CN 107794914A
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- 239000011513 prestressed concrete Substances 0.000 title claims abstract description 69
- 238000005516 engineering process Methods 0.000 title claims abstract description 34
- 238000002360 preparation method Methods 0.000 title claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 21
- 239000010959 steel Substances 0.000 claims abstract description 21
- 239000007921 spray Substances 0.000 claims abstract description 19
- 239000000956 alloy Substances 0.000 claims abstract description 16
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 16
- 239000004567 concrete Substances 0.000 claims description 7
- 230000002787 reinforcement Effects 0.000 claims description 7
- 210000001364 upper extremity Anatomy 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 5
- 238000005266 casting Methods 0.000 claims description 3
- 238000003032 molecular docking Methods 0.000 claims description 3
- 238000009415 formwork Methods 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 claims description 2
- 238000003466 welding Methods 0.000 claims 1
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 239000002689 soil Substances 0.000 description 12
- 230000000694 effects Effects 0.000 description 9
- 238000010276 construction Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000004568 cement Substances 0.000 description 2
- 238000005056 compaction Methods 0.000 description 2
- 239000011440 grout Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000010923 batch production Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000003313 weakening effect Effects 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
- E02D5/24—Prefabricated piles
- E02D5/30—Prefabricated piles made of concrete or reinforced concrete or made of steel and concrete
-
- 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
-
- 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
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/58—Prestressed concrete piles
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/62—Compacting the soil at the footing or in or along a casing by forcing cement or like material through tubes
-
- 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
- E02D5/72—Pile shoes
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The present invention relates to a kind of combination post jacking and the prestressed concrete pipe pile of expanding technology, including：Prestressed concrete pipe pile, hemispherical pile crown, mud jacking hole, valve, hinge, madjack pipe, line jet pipe, hydraulic jack, high-strength alloy blade, blade fixed plate, cube thickness steel cushion block, blade go out seam and mouth spray；Squeezing unit is provided with the prestressed concrete pipe pile, squeezing unit includes madjack pipe and mud jacking hole, and the madjack pipe port of export is provided with mud jacking hole；The prestressed concrete pipe pile both sides are provided with line jet pipe, and the line jet pipe is provided with mouth spray, valve and hinge are welded with the mouth spray, and the valve is attached via a hinge on mud jacking hole.The beneficial effects of the invention are as follows：The pile side post-grouting technology that the present invention uses, can be horizontal compared with the performance of the raising pile side friction of limits, and compared to traditional point mud-jacking technology, line mud jacking is easier to lift pile side friction, so as to lift pile body bearing capacity.
Description
Technical field
The present invention relates to a kind of novel prefabricated concrete pile tube, more particularly to a kind of combination post jacking and expanding technology
Prestressed concrete pipe pile and preparation method thereof.
Background technology
Pile foundation is as a kind of ancient base form, and the building foundation form being most widely used.With science skill
The development of art, particularly mechanical technique, pile foundation are also also arisen at the historic moment from simple toward complexity, the construction technology of various pile foundations,
Prestressed concrete pipe pile is one of representative.Prestressed concrete pipe pile has pile strength height, resistance to compression anti-crack ability
By force, batch production prefabricated construction, it ensure that pile quality, compared to having lower cost and construction work for solid prefabricated pile
Phase is short, can obviously reduce time cost, therefore be widely used in pile foundation engineering.But it belongs to traditional open-end pipe pile, piling
During can produce soil plug effect, influence the bearing capacity of stake, in addition, soil compaction effect is serious, close to buildings had a great influence
Problem, when prestressed concrete pipe pile acts on deep soft soil foundation, piling is unrealistic also relative to uneconomical to horizon d,
Now its bearing capacity of the performance of frictional resistance horizontal strong influence is horizontal.
In order to preferably play pile side friction and stake end bottom bearing, post-mud-jacking bored pile, the technique of post jacking are generated
Refer to be pressed into cement grout in advance by the pressure of design by the Grouting Pipe pre-buried when steel reinforcement cage is processed using high-pressure injection pump
In the pile-end soil layer or Pile side soil layer that stay injected hole, the cement grout of press-in can to the inherent shortcoming sediment of the hole bottom of drill-pouring,
Osmosis, filling effect, compaction, splitting and consolidation occur for mud cake around pile and bearing course at pile end, pass through the above
Effect can reach the effect of enhancing Pile side soil or pile-end soil intensity, so as to improve pile side friction or stake end bottom bearing.
In summary, although the currently research to post grouting pile technology and expanding technology is very universal, for prefabricated
The document that the expanding technology and two kinds of technologies of stake are combined does not have been reported that, therefore is directed to this situation, considers current pile tube
Construction the defects of existing, seek it is a kind of it is new, avoid soil plug effect, played beneficial to pile side friction, with reference to post jacking and expanding
Prestressed concrete pipe pile of technology and preparation method thereof seems particularly significant.
The content of the invention
The purpose of the present invention is to overcome deficiency of the prior art, there is provided a kind of combination post jacking and the pre- of expanding technology should
The preparation method of power concrete tubular pile.
It is a further object to provide a kind of combination post jacking and the prestressed concrete pipe pile of expanding technology.This
The purpose of invention is achieved through the following technical solutions：
The prestressed concrete pipe pile of this combination post jacking and expanding technology, including：Prestressed concrete pipe pile, hemisphere
It is shape pile crown, mud jacking hole, valve, hinge, madjack pipe, line jet pipe, hydraulic jack, high-strength alloy blade, blade fixed plate, vertical
Cube thickness steel cushion block, blade go out seam and mouth spray；Squeezing unit is provided with the prestressed concrete pipe pile, squeezing unit includes
Madjack pipe and mud jacking hole, the madjack pipe port of export are provided with mud jacking hole；The prestressed concrete pipe pile both sides are provided with line jet pipe,
The line jet pipe is provided with mouth spray, and valve and hinge are welded with the mouth spray, and the valve is attached via a hinge to mud jacking
Kong Shang；The prestressed concrete pipe pile bottom is provided with hemispherical pile crown, and expanding equipment is provided with inside the hemispherical pile crown, expands
Footpath equipment includes hydraulic jack, high-strength alloy blade, blade fixed plate and cube thickness steel cushion block, the hemispherical pile crown
Bottom support be provided with cube thickness steel cushion block, the cube thickness steel cushion block transverse direction two sides is provided with hydraulic jack, described
Hydraulic jack both side ends are provided with blade fixed plate, and the blade fixed plate is provided with high-strength alloy blade；The hemisphere
Blade has been reserved on shape pile crown and has gone out seam.
As preferred：The madjack pipe connects through mud jacking pipe connector sleeves and bolt connection, the mud jacking pipe connector sleeves
Between be lined with sheet rubber.
As preferred：The line jet pipe is semicylinder structure, and line jet pipe is set centered on mud jacking hole, the square of line jet pipe
The aperture in docking mud jacking hole is reserved in tee section side；The valve is triangle section formula to half opening structure.
As preferred：Pre-buried screw thread end plate at the top of the prestressed concrete pipe pile, the pre-buried company with nut in bottom
Connect end plate.
As preferred：Hydraulic jack pilot, the hydraulic pressure thousand are provided with the prestressed concrete pipe pile center
Pilot protection pipe is surrounded by outside the pilot of jin top, the pilot protection pipe top is provided with wire fixture；The liquid
Press jack pilot one end connection hydraulic jack, the controller outside the connection of the hydraulic jack pilot other end.
As preferred：Pilot protection pipe fixing component is provided with the middle part of the prestressed concrete pipe pile.
As preferred：The length of the high-strength alloy blade arrives to the inwall of hemispherical pile crown.
As preferred：The hemispherical pile crown upper limb is provided with screw thread end plate, the prestressed concrete pipe pile and hemispherical
Pile crown is connected by the connection end plate with nut with screw thread end plate.
As preferred：The madjack pipe of the prestressed concrete pipe pile end is provided with expanding reach, is lined with inside expanding reach
Rubber ring.
The preparation method of a kind of combination post jacking and the prestressed concrete pipe pile of expanding technology, comprises the following steps：
Step 1: wearing hydraulic jack pilot in pilot protection pipe, make on hydraulic jack pilot
Lower end is stretched out outside pilot protection pipe and fixed with wire fixture；
Step 2: preparing steel reinforcement cage, and madjack pipe, pilot protection pipe, pilot protection are welded on steel reinforcement cage
Pipe fixing component and line jet pipe, upper hinge and valve are welded at the mouth spray of online jet pipe；
Step 3: the connection end plate with nut, screw thread end plate, prestress wire and the bellows of pre-buried good end, branch
Template, casting concrete, maintenance complete post-stretching, after the completion of sealing off and covering anchorage, that is, prestressed concrete pipe pile is prepared；
Step 4: preparing hemispherical pile crown, good blade is reserved on hemispherical pile crown and goes out seam, and inside hemispherical pile crown
Expanding equipment is arranged, is finally threaded end plate on hemispherical pile crown；
Step 5: hydraulic jack pilot is connected in hydraulic jack, pass through prestressed concrete pipe pile stake
The connection end plate with nut at bottom and the screw thread end plate of hemispherical pile crown upper limb connect and compose an entirety, can enter on this basis
The connection of row prestressed concrete pipe pile, that is, make and obtain a kind of combination post jacking and the prestressed concrete pipe of expanding technology
Stake；
Step 6: carrying out piling after putting pile cover on this basis, madjack pipe is connected to mud jacking equipment after the completion of piling,
Hydraulic jack pilot is connected to ground controller, starts mud jacking equipment and controller immediately, carries out mud jacking and expanding
Operation.
The beneficial effects of the invention are as follows：
(1) the pile side post-grouting technology that the present invention uses, can be horizontal compared with the performance of the raising pile side friction of limits,
And compared to traditional point mud-jacking technology, line mud jacking is easier to lift pile side friction, so as to lift pile body bearing capacity.
(2) the expanding equipment of pile crown that the present invention uses, by expanding, can effectively lift end resistance, be finally reached and carry
Rise the purpose of pile body bearing capacity.
(3) present invention is avoided prestressed concrete pipe pile and produced during piling by the connection of hemispherical pile crown
Soil plug effect, so as to reduce weakening of the soil plug effect to pile bearing capacity.
(4) the pilot protection pipe that the present invention uses, is in order to avoid hydraulic jack pilot and pipe of concrete
Wall friction is damaged in stake.
Brief description of the drawings
Fig. 1 is the structural representation of the prestressed concrete pipe pile with reference to post jacking and expanding technology；
Fig. 2 is the structural representation of hemispherical pile crown；
Fig. 3 is the top view of hemispherical pile crown；
Fig. 4 be hemispherical pile crown it is expanding after the completion of top view；
Fig. 5 is the top view of prestressed concrete pipe pile；
Fig. 6 is the structural representation at mouth spray；
Fig. 7 is the structural representation of wire fixture；
Description of reference numerals：1 --- prestressed concrete pipe pile；2 --- hemispherical pile crown；5 --- pilot is protected
Pipe fixing component；6 --- hydraulic jack pilot；7 --- mud jacking hole；8 --- valve；9 --- hinge；10 --- band spiral shell
Female connection end plate；11 --- madjack pipe；12 --- line jet pipe；13 --- pilot protection pipe；14 --- bolt；15——
Hydraulic jack；16 --- high-strength alloy blade；17 --- blade fixed plate；18 --- cube thickness steel cushion block；19——
Blade goes out seam；20 --- mud jacking pipe connector sleeves；21 --- mouth spray；22 --- screw thread end plate；23 --- wire fixture.
Embodiment
The present invention is described further with reference to embodiment.The explanation of following embodiments is only intended to help and understands this
Invention.It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, also
Some improvement and modification can be carried out to the present invention, these are improved and modification also falls into the protection domain of the claims in the present invention
It is interior.
As shown in Figures 1 to 7, the combination post jacking and the prestressed concrete pipe pile of expanding technology include：Prestressing force
Concrete tubular pile 1, hemispherical pile crown 2, pilot protection pipe fixing component 5, hydraulic jack pilot 6, mud jacking hole 7,
Valve 8, hinge 9, the connection end plate 10 with nut, madjack pipe 11, line jet pipe 12, pilot protection pipe 13, bolt 14, hydraulic pressure
Jack 15, high-strength alloy blade 16, blade fixed plate 17, cube thickness steel cushion block 18, blade go out seam 19, madjack pipe connection
Set 20, mouth spray 21, screw thread end plate 22, wire fixture 23, squeezing unit and expanding equipment.
As shown in figure 1,1 a diameter of 500mm of prestressed concrete pipe pile, wall thickness 300mm, the interior mud jacking that is provided with fill
Put, squeezing unit includes madjack pipe 11 and mud jacking hole 7, and the internal diameter of madjack pipe 11 is 68mm, and madjack pipe 11 exports end position and set
There is mud jacking hole 7, a mud jacking hole 7 is set per 3m, and the sectional dimension in the mud jacking hole 7 is about 58mm, the company of the madjack pipe 11
Connected mud jacking pipe connector sleeves 20 and bolt 14 connects, sheet rubber is padded between mud jacking pipe connector sleeves 20 to ensure sealing.
The both sides of prestressed concrete pipe pile 1 are provided with line jet pipe 12, and the line jet pipe 12 is semicylinder structure, and with
Set centered on mud jacking hole 7, the aperture in docking mud jacking hole 7 has been reserved in the square-section side of line jet pipe 12.The line jet pipe 12 is grown
1420mm, internal diameter 52mm, one mouth spray 21 is set at interval of 40mm on line jet pipe 12, a width of 3mm in the section of mouth spray 21,
A height of 200mm, area of section are much smaller than mud jacking hole 7.Valve 8 and hinge 9 are welded with the mouth spray 21, the valve 8 passes through
Hinge 9 is connected on mud jacking hole 7, and the valve 8 is that triangle section formula ensure that piling pile to half opening structure, the structure
The outer soil body be cannot be introduced into stake, and slurries can be extruded smoothly outside stake, and the structural representation at mouth spray 21 is as shown in Figure 6.
The prestressed concrete pipe pile 1 top pre-buried screw thread end plate 22, the pre-buried connection end plate with nut in bottom
10, the connection end plate 10 with nut and the external diameter of screw thread end plate 22 are 500mm, and internal diameter is 200mm.The prestressing force mixes
Coagulate and hydraulic jack pilot 6 is provided with the native center of pile tube 1, the outside of hydraulic jack pilot 6 is surrounded by control and led
Line protection pipe 13, the top of pilot protection pipe 13 is provided with wire fixture 23, so that hydraulic jack pilot 6 can
It is fixed and stretch out pilot protection pipe 13, the connection of hydraulic jack pilot 6 when being easy to the pile tube to connect.The wire card
Have 23 diameters and be slightly less than hydraulic jack pilot 6, hydraulic jack pilot 6 can be pressed into wire fixture 23 solid
It is fixed.The middle part of prestressed concrete pipe pile 1 is provided with pilot protection pipe fixing component 5.
The bottom of prestressed concrete pipe pile 1 is provided with hemispherical pile crown 2,2 a diameter of 500mm of hemispherical pile crown,
Inside is provided with expanding equipment, is fixed as shown in Fig. 2 expanding equipment includes hydraulic jack 15, high-strength alloy blade 16, blade
Plate 17 and cube thickness steel cushion block 18, the bottom support of the hemispherical pile crown 2 is provided with cube thickness steel cushion block 18, described vertical
18 horizontal two sides of cube thickness steel cushion block is provided with hydraulic jack 15, and the both side ends of hydraulic jack 15 are provided with blade fixed plate
17, the blade fixed plate 17 is provided with high-strength alloy blade 16, and the length of the high-strength alloy blade 16 just arrives to
The inwall of hemispherical pile crown 2, its top view are as shown in Figure 3.Blade has been reserved on the hemispherical pile crown 2 and has gone out seam 19, the knife
Piece goes out 19 width of seam and is slightly larger than high-strength alloy blade 16, and the soil entered during such piling in hemispherical pile crown 2 can be high
Strength alloys blade 16 blocks.The upper limb of hemispherical pile crown 2 is provided with screw thread end plate 22, the prestressed concrete pipe pile 1 with
Hemispherical pile crown 2 is connected by the connection end plate 10 with nut and screw thread end plate 22.Described one end of hydraulic jack pilot 6
Connect hydraulic jack 15, the outside controller of one end connection, by controlling the elongation of hydraulic jack 15, ejection high intensity conjunction
Golden blade 16, so as to reach expanding purpose, expanding effect is as shown in Figure 4.
The madjack pipe 11 of the end of prestressed concrete pipe pile 1 has done expansion processing, and the madjack pipe at bottom expands
The prominent stake baseplane of section, length are equal to top expanded section depth, when prestressed concrete pipe pile 1 connects, can easily connected
Madjack pipe 11 is connect, rubber ring is lined with inside expanding reach, to ensure the sealing of madjack pipe 11.
The preparation method of the combination post jacking and the prestressed concrete pipe pile of expanding technology, comprises the following steps：
1) hydraulic jack pilot 6 is worn in pilot protection pipe 13 first, makes hydraulic jack pilot 6
Upper and lower side stretches out outside pilot protection pipe 13 and fixed with wire fixture 23；
2) steel reinforcement cage is then prepared, and welds madjack pipe 11, pilot protection pipe 13, pilot on steel reinforcement cage and protects
Pillar fixing component 5 and line jet pipe 12, upper hinge 9 and valve 8 are and then welded at the mouth spray 21 of online jet pipe 12；
3) be subsequently normal process flow that prestressed concrete pipe pile 1 makes, pre-buried good end with nut
End plate 10, screw thread end plate 22, prestress wire and bellows are connected, formwork supporting plate, casting concrete, conserves and completes post-stretching,
After the completion of sealing off and covering anchorage, that is, prestressed concrete pipe pile 1 is prepared；
4) hemispherical pile crown 2 is prepared, good blade is reserved and goes out seam 19, and expanding equipment is arranged inside hemispherical pile crown 2,
End plate 22 is finally threaded on hemispherical pile crown 2；
5) hydraulic jack pilot 6 is connected in hydraulic jack 15, passes through 1 bottom of prestressed concrete pipe pile
The connection end plate 10 with nut and the screw thread end plate 22 of the upper limb of hemispherical pile crown 2 connect and compose an entirety, can be basic herein
The upper connection for carrying out prestressed concrete pipe pile 1, that is, make and obtain a kind of combination post jacking and the prestressed concrete of expanding technology
Native pile tube；
6) piling is carried out after putting pile cover on this basis, madjack pipe 11 is connected to mud jacking equipment after the completion of piling, will
Hydraulic jack pilot 6 is connected to ground controller, starts mud jacking equipment and controller immediately, carries out mud jacking and expanding behaviour
Make.
Claims (10)
- A kind of 1. prestressed concrete pipe pile of combination post jacking and expanding technology, it is characterised in that including：Prestressed concrete Pile tube (1), hemispherical pile crown (2), mud jacking hole (7), valve (8), hinge (9), madjack pipe (11), line jet pipe (12), hydraulic pressure thousand Jin top (15), high-strength alloy blade (16), blade fixed plate (17), cube thickness steel cushion block (18), blade go out seam (19) and Mouth spray (21)；Squeezing unit is provided with the prestressed concrete pipe pile (1), squeezing unit includes madjack pipe (11) and mud jacking Hole (7), madjack pipe (11) port of export are provided with mud jacking hole (7)；Prestressed concrete pipe pile (1) both sides are provided with line jet pipe (12), the line jet pipe (12) is provided with mouth spray (21), and mouth spray (21) place is welded with valve (8) and hinge (9), described Valve (8) is connected on mud jacking hole (7) by hinge (9)；Prestressed concrete pipe pile (1) bottom is provided with hemispherical pile crown (2) expanding equipment, is provided with inside the hemispherical pile crown (2), expanding equipment includes hydraulic jack (15), high-strength alloy knife Piece (16), blade fixed plate (17) and cube thickness steel cushion block (18), the bottom support of the hemispherical pile crown (2), which is provided with, stands Cube thickness steel cushion block (18), the horizontal two sides of the cube thickness steel cushion block (18) are provided with hydraulic jack (15), the hydraulic pressure thousand Jin top (15) both side ends are provided with blade fixed plate (17), and the blade fixed plate (17) is provided with high-strength alloy blade (16)；Blade has been reserved on the hemispherical pile crown (2) and has gone out seam (19).
- 2. the prestressed concrete pipe pile of combination post jacking according to claim 1 and expanding technology, it is characterised in that：Institute That states madjack pipe (11) connects through mud jacking pipe connector sleeves (20) and bolt (14) connection, between the mud jacking pipe connector sleeves (20) It is lined with sheet rubber.
- 3. the prestressed concrete pipe pile of combination post jacking according to claim 1 and expanding technology, it is characterised in that：Institute It is semicylinder structure to state line jet pipe (12), and line jet pipe (12) is set centered on mud jacking hole (7), and the rectangle of line jet pipe (12) is cut The aperture in docking mud jacking hole (7) is reserved in surface side；The valve (8) is triangle section formula to half opening structure.
- 4. the prestressed concrete pipe pile of combination post jacking according to claim 1 and expanding technology, it is characterised in that：Institute State pre-buried screw thread end plate (22) at the top of prestressed concrete pipe pile (1), the pre-buried connection end plate (10) with nut in bottom.
- 5. the prestressed concrete pipe pile of combination post jacking according to claim 1 and expanding technology, it is characterised in that：Institute State and hydraulic jack pilot (6), the hydraulic jack pilot are provided with prestressed concrete pipe pile (1) center (6) outside is surrounded by pilot protection pipe (13), and pilot protection pipe (13) top is provided with wire fixture (23)；It is described Hydraulic jack pilot (6) one end connection hydraulic jack (15), the connection of hydraulic jack pilot (6) other end are outer The controller in portion.
- 6. the prestressed concrete pipe pile of combination post jacking according to claim 1 and expanding technology, it is characterised in that：Institute State and be provided with pilot protection pipe fixing component (5) in the middle part of prestressed concrete pipe pile (1).
- 7. the prestressed concrete pipe pile of combination post jacking according to claim 1 and expanding technology, it is characterised in that：Institute The length for stating high-strength alloy blade (16) arrives to the inwall of hemispherical pile crown (2).
- 8. the prestressed concrete pipe pile of combination post jacking according to claim 1 and expanding technology, it is characterised in that：Institute State hemispherical pile crown (2) upper limb and be provided with screw thread end plate (22), the prestressed concrete pipe pile (1) is logical with hemispherical pile crown (2) Cross the connection end plate (10) with nut and screw thread end plate (22) connection.
- 9. the prestressed concrete pipe pile of combination post jacking according to claim 1 and expanding technology, it is characterised in that：Institute The madjack pipe (11) for stating prestressed concrete pipe pile (1) end is provided with expanding reach, and rubber ring is lined with inside expanding reach.
- 10. a kind of preparation method as claimed in claim 1 with reference to post jacking and the prestressed concrete pipe pile of expanding technology, It is characterised in that it includes following steps：Step 1: wearing hydraulic jack pilot (6) in pilot protection pipe (13), make hydraulic jack pilot (6) upper and lower side stretches out pilot protection pipe (13) outside and fixed with wire fixture (23)；Step 2: preparing steel reinforcement cage, and madjack pipe (11), pilot protection pipe (13), pilot are welded on steel reinforcement cage Protection pipe fixing component (5) and line jet pipe (12), mouth spray (21) place welding upper hinge (9) and valve of online jet pipe (12) (8)；Step 3: the connection end plate (10) with nut, screw thread end plate (22), prestress wire and the ripple of pre-buried good end Pipe, formwork supporting plate, casting concrete, maintenance complete post-stretching, after the completion of sealing off and covering anchorage, that is, prestressed concrete pipe pile (1) is prepared；Step 4: preparing hemispherical pile crown (2), good blade is reserved on hemispherical pile crown (2) and goes out seam (19), and in hemispherical stake Expanding equipment is arranged inside head (2), end plate (22) is finally threaded on hemispherical pile crown (2)；Step 5: hydraulic jack pilot (6) is connected in hydraulic jack (15), pass through prestressed concrete pipe pile (1) the connection end plate (10) with nut at stake bottom and the screw thread end plate (22) of hemispherical pile crown (2) upper limb connect and compose one it is whole Body, the connection of prestressed concrete pipe pile (1) can be carried out on this basis, i.e. making obtains one kind and combines post jacking and expanding skill The prestressed concrete pipe pile of art；Step 6: carrying out piling after putting pile cover on this basis, madjack pipe (11) is connected to mud jacking equipment after the completion of piling, Hydraulic jack pilot (6) is connected to ground controller, starts mud jacking equipment and controller immediately, carries out mud jacking and expansion Footpath operates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710986084.4A CN107794914B (en) | 2017-10-20 | 2017-10-20 | Prestressed concrete pipe pile combining post-grouting and diameter-expanding technology and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710986084.4A CN107794914B (en) | 2017-10-20 | 2017-10-20 | Prestressed concrete pipe pile combining post-grouting and diameter-expanding technology and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107794914A true CN107794914A (en) | 2018-03-13 |
| CN107794914B CN107794914B (en) | 2023-03-17 |
Family
ID=61532822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710986084.4A Active CN107794914B (en) | 2017-10-20 | 2017-10-20 | Prestressed concrete pipe pile combining post-grouting and diameter-expanding technology and manufacturing method thereof |
Country Status (1)
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| CN107794914B (en) | 2023-03-17 |
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