CN104760134B - Centrifuging-free manufacturing method of prestressed concrete pipe pile - Google Patents
Centrifuging-free manufacturing method of prestressed concrete pipe pile Download PDFInfo
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- CN104760134B CN104760134B CN201510068223.6A CN201510068223A CN104760134B CN 104760134 B CN104760134 B CN 104760134B CN 201510068223 A CN201510068223 A CN 201510068223A CN 104760134 B CN104760134 B CN 104760134B
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- mould
- gas
- concrete
- pipe pile
- prestressed concrete
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B21/00—Methods or machines specially adapted for the production of tubular articles
- B28B21/02—Methods or machines specially adapted for the production of tubular articles by casting into moulds
- B28B21/10—Methods or machines specially adapted for the production of tubular articles by casting into moulds using compacting means
- B28B21/14—Methods or machines specially adapted for the production of tubular articles by casting into moulds using compacting means vibrating, e.g. the surface of the material
- B28B21/16—Methods or machines specially adapted for the production of tubular articles by casting into moulds using compacting means vibrating, e.g. the surface of the material one or more mould elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B21/00—Methods or machines specially adapted for the production of tubular articles
- B28B21/56—Methods or machines specially adapted for the production of tubular articles incorporating reinforcements or inserts
- B28B21/60—Methods or machines specially adapted for the production of tubular articles incorporating reinforcements or inserts prestressed reinforcements
- B28B21/66—Reinforcing mats
Abstract
The invention discloses a centrifuging-free manufacturing method of a prestressed concrete pipe pile. Compared with the currently used centrifugal forming method, the manufacturing method has the advantages that one operation of inflating an air die is added and brings great affect on the manufacturing of the whole prestressed concrete pipe pile, the investment on plant construction is reduced, and the serious noise pollution of a centrifuging machine is also solved. The manufacturing method is free of residual slurry, so that the problem of pollution of slurry can be completely solved; the quality accident caused by insufficient concrete wall thickness can be avoided, thus the yield of the product is increased, and the production cost can be effectively reduced.
Description
Technical field：
The present invention relates to the manufacture method that a kind of prestressed concrete pipe pile exempts from centrifugation, it belongs to industry with civil buildings neck
Domain.
Background technology：
Prestressed concrete pipe pile (PHC) is a kind of important pile foundation material, is hollow round pile body, is applied using pre-tensioning system
Prestressing technique, and centrifugal molding process is used, centrifugal forming is divided into four-stage：Low speed, low-medium speed, middling speed, high speed.Mix
Concrete density is improved using centrifugal process after solidifying soil cast, and forms hollow structure, highest centrifugal speed reaches nearly 1000
Rev/min, the noise of rotary process is especially big, noise pollution especially severe.
After rotary process, concrete layer have also appeared serious lamination to concrete, from outside to inside respectively coagulation
Soil layer, screed, cement calculus layer, because screed and cement calculus layer bearing capacity are small, actual concrete layer net sectional area subtracts
Contract more than 10%, thus reduced pile body vertical compression bearing capacity.
Though concrete layer is closely knit through being centrifuged, because of the layering and the loss of cement slurry of aggregate, cause the intensity of concrete
Decline.According to statistics, the concrete strength 10MPa at least lower than non-centrifugal concrete intensity that pile body is sampled after centrifugation, outlet
Concrete-pile will sample detection concrete strength from pile body, when the domestic quality to stake has objection, generally also using from stake
The method of inspection by sampling with it.In order to ensure PHC concrete strength of pile reaches C80, producer is all with the concrete for being not less than C90
Stake processed, have with C95 even C100 concrete systems stake, the situation of C80, rotary process can not be reached when pile body is sampled yet
Influence to concrete strength is clearly.That is, rotary process only serves the work to form concrete layer hollow structure
With, although the ratio of mud of concrete layer is reduced, be also not enough to offset aggregate layering and slurry be lost in brought to concrete
The adverse effect of intensity.
In addition, though tubular pile concrete is poured into after metering by pile tube inner and outer diameter and length, often occur after centrifugation
The not enough accident of concrete wall thickness occurs, and the inadequate pile tube of these wall thickness belongs to defective work, can only degrade and use.
Requirement of the mould centrifugal forming to centrifuge and tool is higher, it is to be ensured that mould and centrifuge are steadily operated, and must not have jump
The anomalies such as dynamic, play, and the noise of rotary process is especially big, Shi Zhizhuan factories environomental pollution source the most serious, centrifugation
The energy consumption of operation is again high, and the abrasion of centrifuge and mould running wheel is big, and maintenance cost is also high.
The a large amount of remaining slurries separated after concrete centrifugal are again a pollution sources, and 1m3 concrete discharges 0.05m3 remaining slurries,
Weight 90kg, a medium-sized factory for 200 myriametres of annual output, the remaining slurry amount of discharge has 1.1 ten thousand m3 within 1 year, weighs as many as 20,000 tons, although all
Recycle by every means, but the transfer of remaining slurry still results in very big pollution.
The present invention is exactly the high-strength concrete that pile tube is molded using casting, rather than with centrifugal casting, makes C80's
Concrete-pile only needs to use C80 concrete, and by taking the pile tubes of φ 400 × 95 as an example, every meter of stake can save Binder Materials 10Kg, reduce
Production cost, the noise of casting is small, is also produced without remaining slurry, accomplishes to carry out production strictly in line with rules and regulations.
The content of the invention：
The present invention provides the manufacture method that a kind of prestressed concrete pipe pile exempts from centrifugation, and the noise for which obviating centrifuge is dirty
The environmental pollution of dye and remaining slurry, and also improve product quality and reduce production cost.
The present invention is adopted the following technical scheme that：A kind of prestressed concrete pipe pile exempts from the manufacture method of centrifugation, and it is included such as
Lower step：
(1) provides mould, is put into steel reinforcement cage in the lower mould of the mould, and gas mould is put into steel reinforcement cage；
(2) installs stretch board at the two ends of mould；
(3) provides gas mould positioner, and the gas mould positioner includes semicircular steel wires circle and semicircular steel wires circle
Be welded in nut together and the connecting rod being connected with nut, by the semicircular steel wires circle in gas mould positioner together with
The nut that semicircular steel wires lap welding is connected together is positioned over the outside of gas mould；
(4) covers mould, and upper die and lower die are screwed in together；
(5) be powered for the electromagnet of gas mould one end by so that the one end equipped with electromagnet is connected with stretch board on gas mould；
(6) is fixed semicircular steel wires circle with cross clamp using connecting rod, and the semicircular steel wires circle is along die length
One is laid every 0.5m in direction；
(7) inflates gas mould；
(8) mould is moved to shake table upper concrete by, wherein mould across on two shake tables, by air bag
Jacking will simultaneously have been charged into being vibrated after the mould jack-up of concrete, tripping magnet power supply and taking-up gas mould after vibratory compaction
Connecting rod on positioner；
(9) is by the concrete surface troweling at mould openings；
(10) mould is moved to area of resting and rested placement, is deflated after gas mould after concrete solid and is gone out gas die drawing；
(11) mould carries out steam curing, prestressing force are put, the demoulding, pressure steam finishing operations.
Further, 0.5m is provided with a rinforcement bar along on die length direction in the mould.
Further, the cross clamp is fixed together with rinforcement bar.
Further, the center position of the upper mould offers the opening for pouring into a mould concrete.
The present invention has the advantages that：Prestressed concrete pipe pile of the present invention exempts from the manufacture method of centrifugation and current institute
Centrifugal casting is compared, and increase only one operation of inflatable model, but to the making product of whole prestressed concrete pipe pile
Strong influence is given birth to, investment of founding the factory has been not only reduced, the serious noise pollution of centrifuge has been also solved, concrete can have been prevented
The inadequate quality accident of wall thickness, improves the qualification rate of product, relatively efficiently reduces production cost.
Brief description of the drawings：
Fig. 1 is to exempt from the mould schematic diagram used in centrifugal manufacturing method.
Fig. 2 is the top view of Fig. 1.
Fig. 3 is the A-A profiles of Fig. 1.
Fig. 4 is the structural representation of inflatable model positioner.
Fig. 5 is assembling full figure.
Wherein：
The upper moulds of 1-；Mould under 2-；3- rinforcement bars；4- semicircular steel wires circles；5- nuts；6- connecting rods, 7- baffle plates；8- inflating airs
Mould；9- steel reinforcement cages；10- cross clamps.
Specific embodiment：
Refer to shown in Fig. 1 to Fig. 5, prestressed concrete pipe pile of the present invention exempts from what is arrived used in the manufacture method of centrifugation
Mould includes upper mould 1 and the lower mould 2 together with being installed on upper mould 1, in the center position opening of upper mould 1.Along mould in mould
0.5m is provided with a rinforcement bar 3 on tool length direction, to increase the rigidity of mould.As mould used herein
Further improve, mould can process (such as 2m or 1m) with merogenesis, then again by welding or bolted mode
It is connected together.Therefore, mould used in the present invention can be assembled into required length, different from institute in centrifugal manufacturing method
The mould for using must be equipped with the mould of various different lengths, greatly save the investment of mould.
Prestressed concrete pipe pile of the present invention exempts to be put into steel reinforcement cage in the lower mould of mould in the manufacture method being centrifuged, and
Gas mould is put into steel reinforcement cage, wherein gas mould is made according to the length of the hollow size of pile tube and pile tube, in one end of gas mould
Can be attracting with the stretch board for being installed on die end equipped with electromagnet, after energization and connect together, be provided with the other end of gas mould
Spring check valve and vent valve.
In the present invention after the inflation of gas mould especially when concrete is poured into a mould, gas mould understands upward and left and right drift, thus can not
Concentric circles in being formed, therefore the position after the inflation of gas mould is fixed, the present invention will by providing a gas mould positioner
Position after the inflation of gas mould fixes.Wherein gas mould positioner includes that semicircular steel wires circle 4 and semicircular steel wires circle 4 are welded
In nut 5 together and the connecting rod 6 being connected together with nut 5.The other end of connecting rod 6 cross clamp 10 and upper mould 1
Rinforcement bar 3 at opening is fixed, and adjusts height and position with cross clamp 10, after cast concrete, takes out connecting rod 6, semicircle
Wire loop 4 is stayed in pile tube together with nut 5.
Refer to shown in Fig. 1 to Fig. 5, prestressed concrete pipe pile of the present invention exempts from the manufacture method of centrifugation, including following step
Suddenly：
(1) provides mould, is put into steel reinforcement cage in the lower mould of mould, and gas mould is put into steel reinforcement cage；
(2) installs stretch board at the two ends of mould；
(3) provide gas mould positioner, by the semicircular steel wires circle 4 in gas mould positioner together with semicircular steel wires
The nut 5 that circle 4 is welded in together is positioned over the outside of gas mould；
(4) covers mould, and upper die and lower die are screwed in together；
(5) be powered for the electromagnet of gas mould one end by so that the one end equipped with electromagnet is connected with stretch board on gas mould；
(6) is fixed semicircular steel wires circle 4 with cross clamp 10 using connecting rod 6, and wherein semicircular steel wires circle 4 is along mould
Tool length direction lays one every 0.5m；
(7) inflates gas mould；
(8) mould is moved to shake table upper concrete by, wherein mould across on two shake tables, by air bag
Jacking will simultaneously have been charged into being vibrated after the mould jack-up of concrete, tripping magnet power supply and taking-up gas mould after vibratory compaction
Connecting rod 6 on positioner, air bag here is rubber mass, carrys out shake table jack-up after inflation and departs from ground, so
So that shake table do not allow it is fragile；
(9) is by the concrete surface troweling at mould openings；
(10) mould is moved to area of resting and rested placement, is deflated and is gone out gas die drawing, gas mould after gas mould after concrete solid
Reuse；
(11) mould is carried out the routine that a pile tubes such as common steam maintenance, prestressing force are put, the demoulding, pressure are steamed make the later stage by
Operation, it is identical with original technological operation.
Prestressed concrete pipe pile of the present invention to be exempted to pour into a mould in the manufacture method of centrifugation place after concrete and rests certain
Time, after gas mould is deflated again after the basic solid of concrete, so it is accomplished by placement and rests more than 2 hours, this is to concrete
Favourable.When being heated due to the concrete of new shaping, the expansion of gas phase and liquid phase will make its structure become loose, serious top layer
In yeastiness, product quality is had influence on.Exempt from the manufacture method of centrifugation using prestressed concrete pipe pile of the present invention, objectively advise
Model production process, it is ensured that the normal performance of concrete performance.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, some improvement can also be made under the premise without departing from the principles of the invention, these improvement also should be regarded as of the invention
Protection domain.
Claims (4)
1. a kind of prestressed concrete pipe pile exempts from the manufacture method of centrifugation, it is characterised in that：Comprise the following steps
(1) provides mould, is put into steel reinforcement cage in the lower mould of the mould, and gas mould is put into steel reinforcement cage；
(2) installs stretch board at the two ends of mould；
(3) provides gas mould positioner, and the gas mould positioner includes that semicircular steel wires circle and semicircular steel wires lap welding connect
In nut together and the connecting rod being connected with nut, by the semicircular steel wires circle in gas mould positioner together with semicircle
The nut that shape wire loop is welded in together is positioned over the outside of gas mould；
(4) covers mould, and upper die and lower die are screwed in together；
(5) be powered for the electromagnet of gas mould one end by so that the one end equipped with electromagnet is connected with stretch board on gas mould；
(6) is fixed semicircular steel wires circle with cross clamp using connecting rod, and the semicircular steel wires circle is along die length direction
One is laid every 0.5m；
(7) inflates gas mould；
(8) mould is moved to shake table upper concrete by, wherein mould across on two shake tables, by air bag jacking
And will have been charged into being vibrated after the mould jack-up of concrete is come, tripping magnet power supply and taking-up gas mould positioning after vibratory compaction
Connecting rod on device；
(9) is by the concrete surface troweling at mould openings；
(10) mould is moved to area of resting and rested placement, is deflated after gas mould after concrete solid and is gone out gas die drawing；
(11) mould carries out steam curing, prestressing force are put, the demoulding, pressure steam finishing operations.
2. prestressed concrete pipe pile as claimed in claim 1 exempts from the manufacture method of centrifugation, it is characterised in that：In the mould
It is interior that 0.5m is provided with a rinforcement bar along on die length direction.
3. prestressed concrete pipe pile as claimed in claim 2 exempts from the manufacture method of centrifugation, it is characterised in that：The cross clamp
It is fixed together with rinforcement bar.
4. prestressed concrete pipe pile as claimed in claim 1 exempts from the manufacture method of centrifugation, it is characterised in that：The upper mould
Center position offers the opening for pouring into a mould concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510068223.6A CN104760134B (en) | 2015-02-09 | 2015-02-09 | Centrifuging-free manufacturing method of prestressed concrete pipe pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510068223.6A CN104760134B (en) | 2015-02-09 | 2015-02-09 | Centrifuging-free manufacturing method of prestressed concrete pipe pile |
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| Publication Number | Publication Date |
|---|---|
| CN104760134A CN104760134A (en) | 2015-07-08 |
| CN104760134B true CN104760134B (en) | 2017-05-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510068223.6A Active CN104760134B (en) | 2015-02-09 | 2015-02-09 | Centrifuging-free manufacturing method of prestressed concrete pipe pile |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107199617A (en) * | 2017-04-24 | 2017-09-26 | 嘉兴欣创混凝土制品有限公司 | The preparation method of hollow square pile |
| CN108437168A (en) * | 2018-06-14 | 2018-08-24 | 江苏环宇建设工程有限公司 | The mold and production method of natural gas line concrete clad |
| CN110524714A (en) * | 2019-08-15 | 2019-12-03 | 中交第二航务工程局有限公司 | A kind of super-large diameter UHPC tubular pole production technology and horizontal prefab-form system |
| CN110962229A (en) * | 2019-11-25 | 2020-04-07 | 湖南德力电力建设集团有限公司线路器材制造分公司 | Environment-friendly type slurry pouring-free process |
| CN113309142A (en) * | 2021-06-21 | 2021-08-27 | 王书理 | Conveying pipeline production device and production method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1644805A (en) * | 2005-02-16 | 2005-07-27 | 周兆弟 | Apparatus and method for constructing shape-variable pile in situ by static pressure and drawing |
| CN1954982A (en) * | 2005-10-28 | 2007-05-02 | 上海中技桩业发展有限公司 | Method for manufacturing prestressed high strength pile material |
-
2015
- 2015-02-09 CN CN201510068223.6A patent/CN104760134B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1644805A (en) * | 2005-02-16 | 2005-07-27 | 周兆弟 | Apparatus and method for constructing shape-variable pile in situ by static pressure and drawing |
| CN1954982A (en) * | 2005-10-28 | 2007-05-02 | 上海中技桩业发展有限公司 | Method for manufacturing prestressed high strength pile material |
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| CN104760134A (en) | 2015-07-08 |
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