CN101642932B - Production process of short tubular piles - Google Patents
Production process of short tubular piles Download PDFInfo
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- CN101642932B CN101642932B CN2009100637201A CN200910063720A CN101642932B CN 101642932 B CN101642932 B CN 101642932B CN 2009100637201 A CN2009100637201 A CN 2009100637201A CN 200910063720 A CN200910063720 A CN 200910063720A CN 101642932 B CN101642932 B CN 101642932B
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Abstract
The invention relates to a production process of prestressed high-strength concrete tubular piles. The production process of short tubular piles is characterized by comprising the following steps: 1, preparing high-performance concrete; 2, manufacturing a steel reinforcement cage with pile heads: firstly welding the steel reinforcement cage with the length of 1-3 meters through steel reinforcements, then respectively welding collar plates at both end parts of the steel reinforcement cage, and welding end plates on the collar plates to obtain the steel reinforcement cage with the pile heads and the length of 1-3 meters; 3, connecting the steel reinforcement cage with the pile heads and the length of 1-3 meters into a whole by adopting a connecting device to obtain the conjoined steel reinforcement cage with the pile heads; 4, putting the conjoined steel reinforcement cage with the pile heads into a mould; 5, distributing materials; 6. then carrying out longitudinal tension; 6, putting the tensioned pile mould with the materials on a centrifuge for centrifugal forming; 7, putting the centrifugalized pile mould with the materials into a steam maintenance pool for steam maintenance; and 8, stripping after steam maintenance; then removing the connecting device; and obtaining a multisection tubular pile with the length of 1-3 meters. The production process has the characteristics ofhigh efficiency and low production cost.
Description
Technical field
The present invention relates to a kind of production technology of prestressed high-strength concrete pile.
Background technology
Prestressed high-strength concrete pile (Pretensioned Spun High Strength Concrete Pile) claim the PHC pile tube again, is a kind of new industrialization prefabricated pile type.It is through pre-tensioned prestressing, a kind of elongated hollow annular uiform section precast concrete that explained hereafter such as centrifugal forming and high-pressure steaming and cultivating form in precast plant.
The application present situation of PHC pile tube: 1992, China formulated national standard " pretensioned prestressed concrete pipe pile " GB13476-92.The Ministry of Construction listed key popularized project in " high strength prestressed concrete pipe pile " from 1993.Nineteen ninety-five organizes relevant scientific research, design, pile tube factory and unit in charge of construction to write " pre-stressed concrete pipe pile foundation technical regulation " DBJ/T15-22-98 again.1998, China also revised GB GB13476-92, and GB13476-1999 now also puts into effect and implements.1998, the whole nation produced prestressed concrete pipe pile 2000 myriametres approximately, and wherein Guangdong Province accounts for 70%.China now successfully develops φ 1000mm * 30m prestressed high-strength concrete pile; Success is applied to fly ash in electric power plant and levigate quartz sand the production of prestressed concrete pipe pile; Produce the large-scale seam welder of φ 1000mm * 28m and be successfully applied to the processing technology of deformed bar.
The manufacturing process of prestressed concrete pipe pile and prestressed concrete electric pole technology are quite similar, just the pile tube after the finishing operation of prestressed high-strength concrete pile (PHC) manufacturing process is to put a demoulding carries out steam press maintenance again, make concrete crushing strength meet or exceed C80, also, make the content that adopts Binder Materials become much abundanter because this one special operation of steam press maintenance arranged.Existing prestressed concrete pipe pile manufacturing process flow is seen Fig. 1.
The pile tube specification is many at present, and pile tube is divided into 300mm, 350mm, 400mm, 450mm, 500mm, 550mm, 600mm, 800mm, 1000mm, length 7-16m by external diameter; But lack the pile tube (or claiming the anchor pole stake) and the production technology thereof that are shorter than 3 meters.
Summary of the invention
The object of the present invention is to provide a kind of production technology of short tubular piles, this production technology has efficient height, characteristics that production cost is low.
To achieve these goals, technical scheme of the present invention is: the production technology of short tubular piles is characterized in that it comprises the steps:
1) prepares high performance concrete;
2) making of the steel reinforcement cage of band pile crown: be welded into 1～3 meter long steel reinforcement cage with reinforcing bar earlier, weld the anchor ear plate then at the steel reinforcement cage both ends respectively, weld end plate on the anchor ear plate again, obtain the steel reinforcement cage of 1～3 meter long band pile crown, standby; End plate is provided with reinforced hole, bolt hole;
3) steel reinforcement cage with a plurality of 1～3 meter long band pile crowns adopts jockey to link into an integrated entity, and the central axis of the steel reinforcement cage of band pile crown and the central axis of jockey all are positioned on the same axis, obtain the steel reinforcement cage of the band pile crown of disjunctor; Wherein, jockey is made up of hollow connecting rod, 2 ring flanges, and the two ends of hollow connecting rod are welded with ring flange respectively, is through hole in the hollow connecting rod;
4) steel reinforcement cage of the band pile crown of disjunctor is put into mould: 1. at first prepare mould: mould is selected existing 8.4 meters～16 meters long moulds for use, and mould is made up of upper mold half, lower mold half, connecting bolt; 2. then the steel reinforcement cage of the band pile crown of disjunctor is put into lower mold half; And with the two ends of the steel reinforcement cage of the band pile crown of disjunctor respectively by the bolting baffle plate, be fixed with tensioning screw rod on the baffle plate;
5) cloth: the ready high performance concrete of cast in lower mold half, then upper mold half and lower mold half are closed, tighten connecting bolt, form band material stake mould; Screw on tensioning nut on the tensioning screw rod at band material stake mould two ends;
6) carry out vertical stretch-draw then: the steel reinforcement cage to the band pile crown of disjunctor carries out integral tension;
7) the band material stake mould after the stretch-draw is placed on centrifugal forming on the centrifuge;
8) it is steam-cured the band material stake mould after centrifugal to be put into steam-cured pond;
9) steam-cured back form removal; Remove jockey then; Obtain 1～3 meter long pile tube of more piece.
Described short tubular piles is meant that length is 1～3 meter long pile tube.Describedly a plurality ofly be meant 2～9, more piece is and a plurality of corresponding numbers.
The invention has the beneficial effects as follows: an existing mould is once only produced a pipe joint stake.The present invention utilizes 1～3 meters long pile tubes of once production more piece of existing pipe pile die, has efficient height, characteristics that production cost is low.
Description of drawings
Fig. 1 is existing prestressed concrete pipe pile technological process of production figure;
The structural representation of the steel reinforcement cage of Fig. 2 a plurality of band pile crowns that to be the present invention linked together by a plurality of jockeys;
Fig. 3 is the structural representation that the steel reinforcement cage of a plurality of band pile crowns of the present invention is put into lower mold half;
Fig. 4 is the structural representation of end plate;
Fig. 5 is the structural representation of first jockey of the present invention;
Fig. 6 is the cutaway view of Fig. 2 along the A-A line;
Fig. 7 is that the present invention is placed on mould in the schematic diagram that carries out centrifugal forming on the centrifuge;
Fig. 8 is the schematic diagram of 1～3 meter long pile tube of more piece of obtaining after the form removal of the present invention;
Among the figure: 1-spiral bar, 2-prestressing force master muscle, the steel reinforcement cage of 3-first segment band pile crown, 4-first jockey, the steel reinforcement cage of the 5-second joint band pile crown, 6-second jockey, the 7-end plate, the steel reinforcement cage of 8-the 3rd joint band pile crown, 9-lower mold half, the 10-hollow connecting rod, 11-ring flange, 12-bolt, the 13-through hole, 1～3 meter long tube stake of 14-first segment, 1～3 meter long tube stake of 15-second joint, 1～3 meter long tube stake of 16-the 3rd joint, the 17-centrifuge.
The specific embodiment
For a better understanding of the present invention, further illustrate content of the present invention, but content of the present invention not only is confined to the following examples below in conjunction with embodiment.
Embodiment 1:
The production technology of short tubular piles (two meters long, diameter 300mm pile tube), it comprises the steps:
1) prepare high performance concrete (adopting existing known technology): high performance concrete comprises cement, admixture, coarse aggregate (as rubble), fine aggregate (as sand), water reducer (high efficiency water reducing agent) and water; Every cubic meter of concrete P052.5 cement 420kg, admixture 80kg, water 160kg, rubble 1093kg, sand 750kg, water reducer 27kg; Choose each raw material; Cement, admixture, coarse aggregate, fine aggregate, water reducer and water are mixed stirring, obtain high performance concrete, admixture is an II level flyash, and the II level flyash that complies with the national standard requirements all can use.The effect of water reducer is the consumption that reduces water, does not influence concrete workability simultaneously, increases concrete strength, and all water reducers that meets national standard all can use.
2) making (can adopt existing manufacture craft) of steel reinforcement cage of band pile crown: be welded into 2 meters long steel reinforcement cages with reinforcing bar earlier and { be specially: PC rod iron fixed length cutting is become 2 meters long, become prestressing force master muscle 2, then with the two ends heading of prestressing force master muscle 2; (the steel reinforcement cage diameter is 300mm to form steel reinforcement cage by roll welding spiral bar 1 on 7 prestressing force master muscle 2 that are uniformly distributed along the circumference again, the spacing of spiral bar is 35-45mm) }, weld the anchor ear plate then respectively at the steel reinforcement cage both ends, weld end plate 7 (anchor ear plate and end plate constitute pile crown) on the anchor ear plate again, obtain the steel reinforcement cage of 2 meters long band pile crown, standby; Wherein the distance between two end plates is 2 meters, and end plate 7 is provided with reinforced hole, (reinforced hole is that the termination that is used for the prestressing force master muscle 2 of steel reinforcement cage penetrates to bolt hole; Bolt hole is to be used for fixing; As shown in Figure 4);
3) steel reinforcement cage with 32 meters long band pile crown adopts 2 jockeys to link into an integrated entity (as shown in Figure 2, the steel reinforcement cage of 32 meters long band pile crown is that the structure of steel reinforcement cage of band pile crown of 8,32 meters long of steel reinforcement cages of steel reinforcement cage 5, the 3rd joint band pile crown of steel reinforcement cage 3, the second joint band pile crown of first segment band pile crown is identical; 2 jockeys are that first jockey 4, second jockey, 6, the second jockeys 6 are identical with the structure of first jockey 4; The ring flange of jockey is fixedlyed connected by bolt 12 with end plate), the central axis of the steel reinforcement cage of 32 meters long band pile crown and the central axis of 2 jockeys all are positioned on the same axis, each jockey is grown 1 meter, obtains the steel reinforcement cage (as shown in Figure 2) of the band pile crown of disjunctor; Wherein, jockey is formed (as Fig. 2, Fig. 5, shown in Figure 6) by 10,2 ring flanges 11 of hollow connecting rod, and the two ends of hollow connecting rod 10 are welded with ring flange 11 (ring flange is provided with the bolt hole that is used for fixing connection) respectively, is through hole 13 in the hollow connecting rod 10;
Cold-drawn is that (the pile tube stirrup is the less reinforcing bar of diameter that is wrapped in prestressing force master muscle outer ring with the pile tube stirrup, before welding anchor ear plate, carry out cold-drawn) under the condition that does not heat, stretch, eliminate internal stress, improve elastic modelling quantity, must carry out cold-drawn (existing technology is adopted in cold-drawn);
4) steel reinforcement cage of the band pile crown of disjunctor is put into mould (as shown in Figure 3): 1. at first prepare mould: mould is selected existing 8.4 meters long moulds (the existing mould of producing 8 meters long tube stakes) for use, and mould is made up of upper mold half, lower mold half, connecting bolt; 2. then the steel reinforcement cage of the band pile crown of disjunctor is put into lower mold half 9; And with the two ends of the steel reinforcement cage of the band pile crown of disjunctor respectively by the bolting baffle plate, (tensioning screw rod is used for stretch-draw to be fixed with tensioning screw rod on the baffle plate, half hole slot of the termination of lower mold half 9 is passed in the outer end of tensioning screw rod, the outer end of tensioning screw rod is positioned at outside the lower mold half, the termination of upper mold half is provided with half same hole slot, constitutes the tensioning screw rod hole);
5) cloth (adopting existing known technology): the ready high performance concrete of cast in lower mold half 9, then upper mold half and lower mold half are closed, tighten connecting bolt (be matched moulds, become the good band material stake mould of globality), form band material stake mould; Screw on tensioning nut on the tensioning screw rod at band material stake mould two ends;
6) carry out vertical stretch-draw (adopt existing known technology) then: the steel reinforcement cage to the band pile crown of disjunctor carries out integral tension; During stretch-draw, the outer sleeve of stretching-machine is pressed on the end face flange of mould, the nut that the stretching-machine center links to each other with piston is screwed on the tensioning screw rod (being the pull head screw rod), tensioning screw rod (pull head screw rod) pulls outward during stretching-machine (actual is the double acting jack) oil-feed, drive that prestressing force master muscle 2 pulls outward on the steel reinforcement cage of band pile crown of disjunctor, by the time σ during setting
Con=0.7f
Ptk, (σ in the formula
Con-deformed bar control stress for prestressing; f
Ptk-deformed bar strength standard value); Tensioning nut on the tensioning screw rod is tightened, and tension lock stays on the mould; Oil return then, separate with tensioning screw rod with the nut that piston links to each other the stretching-machine center, and stretch-draw is finished;
6) the band material stake mould after the stretch-draw is placed on centrifugal forming on the centrifuge 17 and (adopts prior art, as shown in Figure 7); Rotating speed at centrifuge 17 is 70-80 rev/min of following 10-12 minute earlier; Rotating speed at centrifuge 17 is 120-140 rev/min of following 5-6 minute then;
7) the band material stake mould after centrifugal is put into steam-cured pond and still kettle steam-cured (adopt existing known technology); Under normal pressure under 80-90 ℃ of temperature steam-cured 4 hours, in still kettle (10 atmospheric pressure), 180 ℃ of steam-cured 7-8 of temperature hours then;
8) steam-cured back form removal; Remove 2 jockeys then; Obtain 3 joint short tubular piles (two meters long, the pile tubes of diameter 300mm; Be 1～3 meter long tube stake 14 of first segment (first segment two mitron stakes), 1～3 meter long tube stake 15 of second joint (the two mitron stakes of second joint), 1～3 meter long tube stake 16 of the 3rd joint (the two mitron stakes of the 3rd joint), as shown in Figure 8).
Embodiment 2:
Substantially the same manner as Example 1, difference is: high performance concrete adopts existing other known composition and proportioning (being that existing high performance concrete all is applicable to the present invention).
Embodiment 3:
Substantially the same manner as Example 1, difference is: 2 meters long steel reinforcement cages change 1 meter long steel reinforcement cage into, and mould is selected existing 15 meters long moulds for use; The steel reinforcement cage of 81 meter long band pile crown is linked into an integrated entity by 7 jockeys; Obtain 1 meter long short tubular piles of 8 joints at last.
Embodiment 4:
Substantially the same manner as Example 1, difference is: 2 meters long steel reinforcement cages change 3 meters long steel reinforcement cages into, and mould is selected existing 11 meters long moulds for use; The steel reinforcement cage of 33 meters long band pile crown is linked into an integrated entity by 2 jockeys; Obtain 3 meters long short tubular piles of 3 joints at last.
According to design of the present invention, can adopt the steel reinforcement cage of several 1～3 meter long band pile crown to adopt several jockeys to link into an integrated entity, can adopt the mould of different length pile tube to produce the pile tube of 1～3 meter long different-diameter of some joints simultaneously.
Claims (1)
1. the production technology of short tubular piles is characterized in that it comprises the steps:
1) prepares high performance concrete;
2) making of the steel reinforcement cage of band pile crown: be welded into 1～3 meter long steel reinforcement cage with reinforcing bar earlier, weld the anchor ear plate then at the steel reinforcement cage both ends respectively, weld end plate on the anchor ear plate again, obtain the steel reinforcement cage of 1～3 meter long band pile crown, standby; End plate is provided with reinforced hole, bolt hole;
3) steel reinforcement cage with a plurality of 1～3 meter long band pile crowns adopts jockey to link into an integrated entity, and the central axis of the steel reinforcement cage of band pile crown and the central axis of jockey all are positioned on the same axis, obtain the steel reinforcement cage of the band pile crown of disjunctor; Wherein, jockey is made up of hollow connecting rod, 2 ring flanges, and the two ends of hollow connecting rod are welded with ring flange respectively, is through hole in the hollow connecting rod;
4) steel reinforcement cage of the band pile crown of disjunctor is put into mould: 1. at first prepare mould: mould is selected existing 8.4 meters～16 meters long moulds for use, and mould is made up of upper mold half, lower mold half, connecting bolt; 2. then the steel reinforcement cage of the band pile crown of disjunctor is put into lower mold half; And with the two ends of the steel reinforcement cage of the band pile crown of disjunctor respectively by the bolting baffle plate, be fixed with tensioning screw rod on the baffle plate;
5) cloth: the ready high performance concrete of cast in lower mold half, then upper mold half and lower mold half are closed, tighten connecting bolt, form band material stake mould; Screw on tensioning nut on the tensioning screw rod at band material stake mould two ends;
6) carry out vertical stretch-draw then: the steel reinforcement cage to the band pile crown of disjunctor carries out integral tension;
7) the band material stake mould after the stretch-draw is placed on centrifugal forming on the centrifuge;
8) it is steam-cured the band material stake mould after centrifugal to be put into steam-cured pond;
9) steam-cured back form removal; Remove jockey then; Obtain 1～3 meter long pile tube of more piece.
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| CN2009100637201A CN101642932B (en) | 2009-08-25 | 2009-08-25 | Production process of short tubular piles |
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| CN2009100637201A CN101642932B (en) | 2009-08-25 | 2009-08-25 | Production process of short tubular piles |
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| CN101642932B true CN101642932B (en) | 2011-05-25 |
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| CN102139516B (en) * | 2010-02-01 | 2015-01-21 | 江苏固丰管桩集团有限公司 | Prestressed concrete tubular pile end plate |
| CN102155013A (en) * | 2011-01-26 | 2011-08-17 | 江苏建华管桩有限公司 | Pre-tensioning prestressed concrete dynamic load pile |
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| CN105619590B (en) * | 2016-02-29 | 2018-08-03 | 周兆弟 | Steel reinforcement cage jacking apparatus for pile pile production line |
| CN108724452A (en) * | 2017-04-25 | 2018-11-02 | 周兆弟 | prefabricated centrifugal pile production method |
| CN107471420A (en) * | 2017-08-28 | 2017-12-15 | 四川双铁科技有限公司 | A kind of noise barrier stand column production line |
| CN108081447A (en) * | 2017-12-01 | 2018-05-29 | 福州市鸿生建材有限公司 | A kind of pile pile production technology |
| CN109910167A (en) * | 2018-02-12 | 2019-06-21 | 周兆弟 | A kind of production technology of prefabricated pile |
| CN109795027A (en) * | 2018-12-14 | 2019-05-24 | 福建鸿生高科环保科技有限公司 | A kind of antifreeze cracking method of tubular pole suitable for frost zone bridge subaqueous work |
| CN112428415A (en) * | 2020-11-23 | 2021-03-02 | 富强科技股份有限公司 | Pile connecting device without end plate |
| CN114311276B (en) * | 2021-12-30 | 2024-06-21 | 建华建材（中国）有限公司 | Baffle for sawing piles and production method of pipe piles |
| CN114248345A (en) * | 2021-12-31 | 2022-03-29 | 湖南东方管桩有限公司 | Short pipe pile manufacturing method |
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| CN1560380A (en) * | 2004-02-27 | 2005-01-05 | 胡柏英 | Structure of precast rainforced concrete tubular pile and manufacture method thereof |
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