CN104760134A - 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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- CN104760134A CN104760134A CN201510068223.6A CN201510068223A CN104760134A CN 104760134 A CN104760134 A CN 104760134A CN 201510068223 A CN201510068223 A CN 201510068223A CN 104760134 A CN104760134 A CN 104760134A
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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
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
- Piles And Underground Anchors (AREA)
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 a kind of prestressed concrete pipe pile and exempt from centrifugal manufacture method, it belongs to industry and residential construction area.
Background technology:
Prestressed concrete pipe pile (PHC) is a kind of important pile foundation material, is the round pile body of hollow, adopts pre-tensioning system Shi Hanzhang technique, and with centrifugal molding process, centrifugal forming is divided into four-stage: low speed, low-medium speed, middling speed, at a high speed.Namely adopt centrifugal process that concrete density is improved after pouring concrete, and form hollow structure, the highest centrifugal speed reaches nearly 1000 revs/min, and the noise of rotary process is large especially, noise pollution especially severe.
Concrete is after rotary process, concrete layer have also appeared serious lamination, be respectively concrete layer, screed, cement calculus layer from outside to inside, because of screed and cement calculus layer bearing capacity little, actual concrete layer net sectional area has reduced more than 10%, thus reduces pile body vertical compression bearing capacity.
Though concrete layer is through centrifugal closely knit, because of the layering of aggregate and the loss of cement slurry, concrete intensity is caused to decline.According to statistics, the concrete strength 10MPa at least lower than non-centrifugal concrete intensity of pile body sampling after centrifugal, the concrete-pile of outlet all will detect concrete strength from pile body sampling, when the domestic quality to stake has objection, usually also adopts the way of inspection by sampling from pile body.C80 is reached in order to ensure PHC concrete strength of pile, producer is all with the concrete stake being not less than C90, have with C95 even C100 concrete stake, also can not reach the situation of C80 when pile body samples, rotary process is on the impact of concrete strength clearly.That is, rotary process only serves the effect forming concrete layer hollow structure, although the ratio of mud of concrete layer reduces, is also not enough to offset aggregate layering and slurry stream and becomes homeless the adverse effect to concrete strength brought.
In addition, though tubular pile concrete pours into after metering by pile tube inner and outer diameter and length, the accident that often there will be concrete wall thickness deficiency after centrifugal occurs, and the pile tube that these wall thickness are inadequate belongs to defective work, use of can only demoting.
The requirement of mould centrifugal forming to centrifuge and tool is higher, guarantee mould and centrifuge smooth operation, must not have beat, the anomaly such as play, and the noise of rotary process is large especially, the environomental pollution source that Shi Zhizhuan factory is the most serious, the energy consumption of rotary process is high again, and the wearing and tearing of centrifuge and mould running wheel are large, and maintenance cost is also high.
The a large amount of remaining slurry separated after concrete centrifugal is again pollution sources, the remaining slurry of 1m3 concrete discharge 0.05m3, heavy 90kg, the medium-sized factory of annual output 200 myriametres, the remaining slurry amount of discharging for 1 year has 1.1 ten thousand m3, weigh 20,000 tons more than, although recycle all by every means, the transfer of remaining slurry still can cause very large pollution.
The present invention is exactly the high-strength concrete adopting the shaping pile tube of casting, instead of with centrifugal casting, the concrete-pile making C80 only needs to use C80 concrete, for φ 400 × 95 pile tube, every meter of stake can save Binder Materials 10Kg, reduces production cost, and the noise of casting is little, do not have remaining slurry to produce, accomplish to carry out production strictly in line with rules and regulations yet.
Summary of the invention:
The invention provides a kind of prestressed concrete pipe pile and exempt from centrifugal manufacture method, which obviate the noise pollution of centrifuge and the environmental pollution of remaining slurry, but also improve product quality and reduce production cost.
The present invention adopts following technical scheme: a kind of prestressed concrete pipe pile exempts from centrifugal manufacture method, and it comprises the steps:
(1). mould is provided, in the counterdie of described mould, puts into steel reinforcement cage, and in steel reinforcement cage, put into gas mould;
(2). at the two ends of mould, stretch board is installed;
(3). gas mould positioner is provided, the nut that described gas mould positioner comprises semicircular steel wires circle, be connected together with semicircular steel wires lap welding and the connecting rod be connected with nut, be positioned over the outside of gas mould together with the nut be connected together with semicircular steel wires lap welding by the semicircular steel wires circle in gas mould positioner;
(4). cover patrix, upper die and lower die are screwed in together;
(5). be energized by the electromagnet of gas mould one end, the one end of the mould that makes to bring about the desired sensation being equipped with electromagnet is connected with stretch board;
(6). utilize connecting rod to be fixed by semicircular steel wires circle cross clamp, described semicircular steel wires circle lays one along die length direction every 0.5m;
(7). gas mould is inflated;
(8). mould is moved to shake table upper concrete, wherein mould is across on two shake tables, the next after vibration of concrete mould jack-up will be loaded, tripping magnet power supply and the connecting rod that takes out on gas mould positioner after vibratory compaction by air bag jacking;
(9). by the concrete surface troweling at mould openings place;
(10). mould is moved to district of resting and to rest placement, after concrete solid, gas die drawing also goes out by the venting of gas mould;
(11). mould is carried out steam curing, prestressing force is put, the demoulding, pressure steam finishing operations.
Further, in described mould, on die length direction, 0.5m is provided with a rinforcement bar.
Further, together with described cross clamp is fixed on rinforcement bar.
Further, the position, center of described patrix offers the opening for cast concrete.
The present invention has following beneficial effect: prestressed concrete pipe pile of the present invention exempts from centrifugal manufacture method compared with centrifugal casting used at present, increase only inflatable model one operation, but great impact is created on the making of whole prestressed concrete pipe pile, not only reduce investment of founding the factory, also solve the serious noise pollution of centrifuge, the quality accident that concrete wall thickness is inadequate can be stopped, improve the qualification rate of product, more effectively reduce production cost.
Accompanying drawing illustrates:
Fig. 1 is for exempting 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 profile of Fig. 1.
Fig. 4 is the structural representation of inflatable model positioner.
Fig. 5 is assembling full figure.
Wherein:
1-patrix; 2-counterdie; 3-rinforcement bar; 4-semicircular steel wires circle; 5-nut; 6-connecting rod, 7-baffle plate; 8-inflatable model; 9-steel reinforcement cage; 10-cross clamp.
Detailed description of the invention:
Please refer to shown in Fig. 1 to Fig. 5, the mould that prestressed concrete pipe pile of the present invention exempts to use in centrifugal manufacture method comprises patrix 1 and counterdie 2 together with being installed on patrix 1, at position, the center opening of patrix 1.In mould, on die length direction, 0.5m is provided with a rinforcement bar 3, to increase the rigidity of mould.As the further improvement of mould used herein, mould can also process (as 2m or 1m etc.) by merogenesis, and then is connected together by welding or bolted mode.Therefore, mould used in the present invention can be assembled into required length, is different from the mould that the mould used in centrifugal manufacturing method must be equipped with various different length, greatly saves the investment of mould.
Prestressed concrete pipe pile of the present invention exempts from the counterdie of mould, to put into steel reinforcement cage in centrifugal manufacture method, and in steel reinforcement cage, put into gas mould, wherein gas mould is made according to the length of pile tube hollow size and pile tube, in one end of gas mould, electromagnet is housed, can be attracting and connect together with the stretch board being installed on die end after energising, be provided with spring check valve and vent valve at the other end of gas mould.
In the present invention gas mould inflation after especially when cast concrete; gas mould can upwards with left and right drift; so just can not form interior concentric circles, the position after therefore gas mould will being inflated fixes, and the position after the inflation of gas mould fixes by providing a gas mould positioner by the present invention.Wherein gas mould positioner comprise semicircular steel wires circle 4, be welded in semicircular steel wires circle 4 together with nut 5 and the connecting rod 6 that is connected together with nut 5.The other end of connecting rod 6 is fixed with the rinforcement bar 3 of cross clamp 10 with patrix 1 opening part, and regulates height and position with cross clamp 10, and after cast concrete, take out connecting rod 6, semicircular steel wires circle 4 is stayed in pile tube together with nut 5.
Please refer to shown in Fig. 1 to Fig. 5, prestressed concrete pipe pile of the present invention exempts from centrifugal manufacture method, comprises the steps:
(1). mould is provided, in the counterdie of mould, puts into steel reinforcement cage, and in steel reinforcement cage, put into gas mould;
(2). at the two ends of mould, stretch board is installed;
(3). gas mould positioner is provided, the semicircular steel wires circle 4 in gas mould positioner is positioned over the outside of gas mould together with the nut 5 be welded in semicircular steel wires circle 4;
(4). cover patrix, upper die and lower die are screwed in together;
(5). be energized by the electromagnet of gas mould one end, the one end of the mould that makes to bring about the desired sensation being equipped with electromagnet is connected with stretch board;
(6). utilize connecting rod 6 to be fixed by semicircular steel wires circle 4 cross clamp 10, wherein semicircular steel wires circle 4 lays one along die length direction every 0.5m;
(7). gas mould is inflated;
(8). mould is moved to shake table upper concrete, wherein mould is across on two shake tables, the next after vibration of concrete mould jack-up will be loaded by air bag jacking, tripping magnet power supply and the connecting rod 6 taken out on gas mould positioner after vibratory compaction, here air bag is rubber mass, after inflation, shake table jack-up come and depart from ground, making shake table be not easy to damage like this;
(9). by the concrete surface troweling at mould openings place;
(10). mould is moved to district of resting and to rest placement, after concrete solid, gas die drawing also goes out by the venting of gas mould, and gas mould is reused;
(11). mould is carried out common steam maintenance, routine operation that the pile tube such as prestressing force is put, the demoulding, a pressure steaming makes the later stage, identical with original technological operation.
Prestressed concrete pipe pile of the present invention exempts from must place certain hour of resting after cast concrete in centrifugal manufacture method, and exitted by gas mould after the basic solid of concrete, so just need placement to rest more than 2 hour, this is favourable to concrete again.Due to newly shaping concrete be heated time, the expansion of gas phase and liquid phase will make its structure become loose, and serious top layer is yeastiness, has influence on product quality.Adopt prestressed concrete pipe pile of the present invention to exempt from centrifugal manufacture method, objectively specification production process, ensure that the normal performance of concrete performance.
The above is only the preferred embodiment of the present invention, it should be pointed out that for those skilled in the art, can also make some improvement under the premise without departing from the principles of the invention, and these improvement also should be considered as protection scope of the present invention.
Claims (4)
1. prestressed concrete pipe pile exempts from a centrifugal manufacture method, it is characterized in that: comprise the steps
(1). mould is provided, in the counterdie of described mould, puts into steel reinforcement cage, and in steel reinforcement cage, put into gas mould;
(2). at the two ends of mould, stretch board is installed;
(3). gas mould positioner is provided, the nut that described gas mould positioner comprises semicircular steel wires circle, be connected together with semicircular steel wires lap welding and the connecting rod be connected with nut, be positioned over the outside of gas mould together with the nut be connected together with semicircular steel wires lap welding by the semicircular steel wires circle in gas mould positioner;
(4). cover patrix, upper die and lower die are screwed in together;
(5). be energized by the electromagnet of gas mould one end, the one end of the mould that makes to bring about the desired sensation being equipped with electromagnet is connected with stretch board;
(6). utilize connecting rod to be fixed by semicircular steel wires circle cross clamp, described semicircular steel wires circle lays one along die length direction every 0.5m;
(7). gas mould is inflated;
(8). mould is moved to shake table upper concrete, wherein mould is across on two shake tables, the next after vibration of concrete mould jack-up will be loaded, tripping magnet power supply and the connecting rod that takes out on gas mould positioner after vibratory compaction by air bag jacking;
(9). by the concrete surface troweling at mould openings place;
(10). mould is moved to district of resting and to rest placement, after concrete solid, gas die drawing also goes out by the venting of gas mould;
(11). mould is carried out steam curing, prestressing force is put, the demoulding, pressure steam finishing operations.
2. prestressed concrete pipe pile as claimed in claim 1 exempts from centrifugal manufacture method, it is characterized in that: in described mould, on die length direction, 0.5m is provided with a rinforcement bar.
3. prestressed concrete pipe pile as claimed in claim 2 exempts from centrifugal manufacture method, it is characterized in that: together with described cross clamp is fixed on rinforcement bar.
4. prestressed concrete pipe pile as claimed in claim 1 exempts from centrifugal manufacture method, it is characterized in that: the position, center of described patrix offers the opening for cast 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 |
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| 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 |
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| CN104760134A true CN104760134A (en) | 2015-07-08 |
| CN104760134B 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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Cited By (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 |
Cited By (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 |
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| Publication number | Publication date |
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| CN104760134B (en) | 2017-05-24 |
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