CN102808404A - Octagonal concrete centrifugal pile and forming mould thereof - Google Patents
Octagonal concrete centrifugal pile and forming mould thereof Download PDFInfo
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- CN102808404A CN102808404A CN2012102881781A CN201210288178A CN102808404A CN 102808404 A CN102808404 A CN 102808404A CN 2012102881781 A CN2012102881781 A CN 2012102881781A CN 201210288178 A CN201210288178 A CN 201210288178A CN 102808404 A CN102808404 A CN 102808404A
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Abstract
The invention provides an octagonal concrete centrifugal pile and a forming mould thereof. A pile body adopts a hollow structure, and the outer profile of the cross section of the pile body is in an octagonal shape. The edges of the octagonal shape have different length, the short edges are respectively 40 mm, 45 mm, 50 mm and 55 mm in length according to different pile shapes, and all the corners of the edges are in a stress relief arc shape; and the arc radii are the same and are respectively 18 mm, 22 mm, 24 mm and 26 mm according to the different pile shapes. The octagonal concrete centrifugal pile has the benefits as follows: the material is saved, the self weight is light, the pile is not easy to damage, the pile body is good in ductility, the pile forming quality is improved by 20%, the bending and shearing resistance is improved by 30%, the production process is easier to control and the mould is easier to make. Poor durability of pile body concrete due to pile material damage in the transportation and construction processes can be avoided. The bearing capacity provided by a single pile is 30% higher than that provided by the general process, the economic property is good, and the cost is saved by about 25%. The pile body of the forming mould is easy to de-mould, and the effects of energy saving and emission reduction can be achieved.
Description
Technical field
The invention belongs to building field, relate to the improvement of a kind of foundation pile shape and structure in the building field.Specifically, be stake of a kind of octagon concrete centrifugal and moulding form thereof.
Background technology
Existing preformed pile has a lot, if any the solid side's stake of concrete, concrete hollow square pile, prestressed concrete pipe pile, pre-stress hollow square pile etc.The solid side's stake of concrete, concrete hollow square pile are generally non-prestressed prefabricated units, and it is big to produce occupied ground, and it is big to consume the energy, and reinforcing cage is made and mostly concrete formation is manually-operated, and mechanization degree is not high, and quality is difficult for guaranteeing; Anti-bending strength is poor, and lifting, transportation, construction transhipment are prone to cause pile body crack even fracture to occur; The employing shaping of vibrating, strength grade of concrete is generally C30-C40, and the pile body structural bearing capacity is lower, and the external form physical dimension is irregular, is prone in the construction clip broken, and the stake breakage rate is high, less economical.The pile body steel using amount is big, and is uneconomical.Solid in addition side's stake is from great, though hollow square pile adopts the drawing method moulding of loosing core, from heavy and light, other problem still exists.Though pile tube is a centrifugal forming, have the high advantage of concrete strength of pile, pile tube external surface size is little, and the single pile bearing capacity of foundation soil that provides is lower; Bending resistance is not high, stacks to be prone to roll buttress, poor stability.
Pre existing prestressed concrete hollow square pile and moulding form thereof, like Chinese patent " prestress high intensity concrete square pile and manufacturing approach thereof and moulding form ", the patent No. is 200710068545.6, prestress high intensity concrete square pile comprises reinforcing cage, concrete; Its two ends are provided with the square metal end plate that is connected with reinforcing cage, and bevel for welding is established on two square metal end plates, four limits, and central authorities are circular holes, are provided with through wires hole and tension force hole between circular hole and four limits symmetrically; The stirrup of reinforcing cage shape in the shape of a spiral is welded on the main muscle continuously; The profile of pile body and end plate is square, and its four angles are small one and large one two pairs of circular arcs, and its arc chord angle is 90 ° of a pair of arc chord angles, arc radius 25-30mm, and another is to 90 ° of arc chord angles, arc radius 5-10mm; The stake heart is the columnar mesopore identical with end plate central circular hole diameter.The prestress high intensity concrete square pile that the moulding form of this patent of usefulness is processed; Main muscle in the reinforcing cage in its pile body is to be evenly distributed in the concrete of pile body edge; The tension stress that main muscle acts in the concrete in the pile body also is equally distributed; Because the cross section of whole stake is an asymmetrical design, the concrete that the two pairs of arc chord angle places are used is different, causes the concrete cover became uneven of each main muscle outerwrap; Thereby make pile body have open defect, influenced the good looking appearance and the quality of prestressed concrete square pile.Traditional for another example side's stake, tube-sinking cast-in-situ pile etc.It is relatively low to show as bearing capacity of single pile, and bending resistance (drawing) shear behavior is poor, long construction period, and pile quality does not meet designing requirement; Piling well damage in transportation and the use causes the pile concrete durability bad.The preformed pile smooth in appearance, the frictional force of piling and soil layer is little.
Also there be a kind of end that the prestressed centrifugally concrete square pile of end plate is arranged, from heavy and light, material-saving, lifting, convenient transportation, bearing capacity of pile is big.But its main muscle layout is reasonable inadequately, and poor as main muscle, pile body anti-bending strength with prestressed reinforcement or plain bars.End plate four limits do not have the welding groove, have influenced the pile connectivity robustness.The pile body cross section is a quadrangle, and pile body very easily damages for four jiaos in the building operations, causes whole stake to be scrapped, and not only causes waste, but also can influence construction speed.
In addition, at existing pile for prestressed pipe, the pre-stress hollow square pile made, during the mould of operation centrifugal forming, in matched moulds, the demoulding, the easy percussion of running wheel level ground makes the running wheel shape become ellipse.When oval-shaped running wheel rotated on centrifuge, mould is dished out from centrifuge led to a disaster easily.In addition, upper and lower mould all fastens with the tongue and groove groove in the manufacturing process of pile for prestressed pipe, pre-stress hollow square pile, and the matched moulds bolt on the counterdie is through fixing after 180 ° of the artificial upsets of bearing pin again.Because artificial upset bolt is difficult to accurately put in place, causes the matched boards sealing poor, occurs the spillage phenomenon easily in the making moulding, causes product rejection.Centrifugal moulding mould is badly in need of improving.
Summary of the invention
To structural deficiency in the prior art; One of the object of the invention provides the stake of a kind of octagon concrete centrifugal, the pile body bearing capacity of single pile is high, little, the horizontal bending resistance shear behavior of deadweight is outstanding, shock resistance is high, pile and reinforcement manner is flexible, pile quality is excellent, with reach energy-saving and cost-reducing, environmental protection, economic benefit improves, uses piling widely.Two of the object of the invention provides a kind of moulding form that meets the octagon concrete centrifugal stake of energy-saving and emission-reduction.
For realizing above-mentioned purpose, the technical scheme that the present invention adopts provides the stake of a kind of octagon concrete centrifugal, includes pile body; Said pile body is a hollow-core construction, and the outline of its cross section is an octagon, and pile body includes reinforcing cage; Concrete, said reinforcing cage comprises skeleton master muscle and stirrup, said stirrup shape in the shape of a spiral is welded on the said skeleton master muscle continuously; The two ends of said pile body are provided with the metal end plate that is connected with reinforcing cage, and said metal end plate and pile body connecting portion are provided with cuff; Wherein: the different bond length on eight limits of said pile body are respectively 40mm, 45mm, 50mm, 55mm, and the long edge lengths of the difference that different minor faces are corresponding is all unequal, and forms multiple piles with different type; Each limit corner of every kind of pile body all is stress and eliminates circular arc, and arc radius R equates that all R is respectively 18mm, 22mm, 24mm, 26mm according to piles with different type arc radius.
The moulding form of a kind of octagon concrete centrifugal stake is provided simultaneously.
Effect of the present invention is that the production mechanization degree is high, and the quality assurance degree is high, owing to adopt hollow shape; Save material more than 30%, from heavy and light, transportation, stacking are conveniently; Not fragile when lifting, transportation, transhipment, die sinking is convenient, the construction breakage rate is low, the pile good in integrity; Pile body bending resistance shear behavior improves more than 40%, and pile body construction length is darker, and the scope of application is wide.The moulding form of centrifugal stake is provided with alignment pin at patrix and counterdie joint, is with during with the counterdie matched moulds spring bolt to be fixedly connected with nut on the counterdie on the employing patrix at patrix, and patrix and counterdie can accurately be located; Matched moulds is tight when having guaranteed octagon concrete centrifugal stake making, simple operation, and labour intensity is low; Production efficiency is high; Be difficult for spillage when centrifugal, the moulding pile body is prone to the demoulding, strong assurance the pile body Forming Quality.
Description of drawings
Fig. 1 is the structural representation of octagon concrete centrifugal of the present invention stake;
Fig. 2 is the vertical view of octagon concrete centrifugal of the present invention stake;
Fig. 3 is the schematic cross-section of Fig. 1;
Fig. 4 is the A-A schematic cross-section of Fig. 2;
Fig. 5 is a mould structure sketch map of the present invention;
Fig. 6 is that the D of Fig. 5 is to view;
Fig. 7 is the B-B sectional view of Fig. 5;
Fig. 8 is the C-C sectional view of Fig. 5;
Fig. 9 is the partial enlarged drawing at the E position of Fig. 8.
Among the figure:
1, reinforcing cage 2, concrete 3, main muscle 4, stirrup 5, end plate 6, minor face
7, cuff 8, slope 9, flange connecting plate 10, idler pulley 11, reinforcing rib
12, patrix 13, locker 14, counterdie 15, octagon hole 16, flange hole
17, the arm of angle 19, bolt 20, spring in concrete slurry separate slot 18, the circular arc
21, axle bush 22, cover box 23, patrix junction plate 24, counterdie junction plate
25, nut cap 26, nut pin 27, nut 28, suspension ring 29, alignment pin
The specific embodiment
In conjunction with accompanying drawing and embodiment octagon concrete centrifugal of the present invention stake and moulding form thereof are explained.
Octagon concrete centrifugal of the present invention stake includes pile body, and said pile body is a hollow-core construction; The outline of its cross section is an octagon, and pile body includes reinforcing cage 1, concrete 2; Said reinforcing cage 2 comprises skeleton master muscle 3 and stirrup 4; Said stirrup shape in the shape of a spiral is welded on the said skeleton master muscle continuously, and the two ends of said pile body are provided with the metal end plate 5 that is connected with reinforcing cage, and said metal end plate 5 is provided with cuff 7 with the pile body connecting portion; Different minor faces 6 length on eight limits of said pile body are respectively 40mm, 45mm, 50mm, 55mm, and the long edge lengths of the difference that different minor faces are corresponding is all unequal, and forms multiple piles with different type; Each limit corner of every kind of pile body all is stress and eliminates circular arc, and arc radius R equates that all R is respectively 18mm, 22mm, 24mm, 26mm according to piles with different type arc radius.
The profile of said metal end plate 5 is identical with said pile body profile, and four limits of said metal end plate 5 are provided with bevel for welding 8, and central authorities are circular holes identical with the central through hole diameter of said pile body.Said skeleton master muscle 3 is a rod iron, and said skeleton master muscle 3 is parallel with the pile body outer contour, and said skeleton master muscle 3 is provided with heading with said metal end plate 5 junctions.
Said moulding form includes upper die and lower die and is separately fixed at the locker on the upper and lower mould; The inner chamber cross section of upper die and lower die is all triangular in shape; The moulding form inner chamber cross section that patrix and counterdie fasten back formation is a square; Foursquare four interior angles are the circular arc interior angle that radius equates, different size mould arc radius is respectively 18mm, 22mm, 24mm, 26mm; Said locker includes bolt, nut, when patrix and counterdie matched moulds, through spring bolts and nuts is compressed and matched moulds.
On said patrix and position that counterdie engages, be provided with alignment pin, counterdie is provided with the locating hole corresponding with alignment pin with the position that patrix engages, and alignment pin and locating hole closely cooperate during matched moulds, fixedly the matched moulds position.On the patrix at said patrix and counterdie matched moulds place and counterdie, be symmetrically installed with suspension ring respectively.
Concrete offcenter squared pile of the present invention and moulding form function thereof are achieved in that
Like Fig. 1, shown in 3, the stake of said octagon concrete centrifugal comprises reinforcing cage 1, concrete 2.Said reinforcing cage 1 comprises skeleton master muscle 3 and stirrup 4, and the stirrup 4 of reinforcing cage shape in the shape of a spiral is welded on the said skeleton master muscle 3 continuously.The stake of said octagon concrete centrifugal is a hollow-core construction, and the outline of its cross section is an octagon.This octagonal each edge lengths is unequal, and eight limit corners of said octagon concrete centrifugal stake all are stress and eliminate circular arc, and arc radius equates.Through complicated calculations and the value of the different size stake arc radius that obtains is the most reasonable, be 40mm, be 45mm, be 50mm, be 55mm for the 26mm minor face for the 24mm minor face for the 22mm minor face for the 18mm minor face for the centrifugal stake R of 600*600mm for the centrifugal stake R of 500*500mm for the centrifugal stake R of 450*450mm for the centrifugal stake R of 400*400mm.The two ends of said octagon concrete centrifugal stake are provided with the metal end plate 5 that is connected with said reinforcing cage 1, have further strengthened the intensity of pile crown.Four limits of said metal end plate 5 are provided with bevel for welding 8.
Like Fig. 2, shown in 4, said metal end plate 5 central authorities are and the stake identical circular hole of bore dia in the heart that four limits of said metal end plate 5 are provided with bevel for welding 8.Said metal end plate 5 is provided with cuff 7 with the pile body connecting portion, therefore can further strengthen the intensity of pile crown, avoids when the construction hammering, pile crown being caused damage.The length L of said cuff 7 is 110mm-320mm.It is the convexity of 1-3mm that said cuff 7 is provided with 2 road radiuses at the axial direction along the stake of said octagon concrete centrifugal.
As shown in Figure 5, octagon concrete centrifugal forming pile mould comprises patrix 12, counterdie 14; Locker 13; The outside of patrix 12, counterdie 14 is provided with reinforcing rib 11, and patrix 12, counterdie 14 are provided with idler pulley 10, and the two ends of patrix 12, counterdie 14 have fixedly mounted flange connecting plate 9.Patrix 12 is an octagon with the moulding form inner chamber that counterdie 14 fastens back formation; Octagonal eight interior angles are the circular arc interior angle that radius equates, are 18mm, are 22mm, are 24mm, are 26mm for the centrifugal pile die R of 600*600mm for the centrifugal pile die R of 500*500mm for the centrifugal pile die R of 450*450mm for the centrifugal pile die R of 400*400mm.Symmetry has been installed suspension ring 28 respectively on the patrix 12 at patrix 12 and counterdie 14 matched moulds places and counterdie 14.Be provided with alignment pin 29 at patrix 12 and counterdie 14 joints.
As shown in Figure 6, flange connecting plate 9 is provided with hole octagon 15 and flange hole 16.
As shown in Figure 7; Patrix 12, counterdie 14 are provided with idler pulley 10; The outside of patrix 12, counterdie 14 is provided with reinforcing rib 11, and patrix 12 is an octagon with the moulding form inner chamber that counterdie 14 fastens back formation, and the radius R of the arm of angle 18 equates in four circular arcs of octagonal inner chamber.Patrix 12 is provided with concrete slurry separate slot 17 with the joint face of counterdie 14, prevents that effectively the concrete slurry in the octagonal inner chamber from overflowing from the land area of patrix 12 with counterdie 14.
As shown in Figure 8, patrix 12 is an octagon with the moulding form inner chamber that counterdie 14 fastens back formation.Patrix 12 is fixedly connected by locker 13 with counterdie 14.The structure of locker 13 is: patrix 12 is provided with patrix junction plate 23, and counterdie 14 is provided with counterdie junction plate 24, is respectively equipped with cover box 22, nut cap 25 on patrix junction plate 23, the counterdie junction plate 24.
As shown in Figure 9, be respectively equipped with cover box 22, nut cap 25 on patrix junction plate 23, the counterdie junction plate 24.Bolt 19 is on locker 13, and spring 20 is positioned on the axle bush 21, and nut cap 25 is on nut 27, and nut pin 26 is through between nut cap 25 and the nut 27.During operation bolt 19 is screwed on nut 27, spring 20 compresses, and gets final product matched moulds.This device can effectively be saved the matched moulds time, has made things convenient for workman's operation, has guaranteed the matched moulds quality.
Octagon concrete centrifugal of the present invention stake is produced as follows:
1) end plate of processing octagon concrete centrifugal stake: by end plate designing requirement casting blank, mill flat; Or metal sheet cuts system, punching, mills out groove and stress elimination circular arc thereafter, by figure sample car, plane processed finished products
2) make reinforcing cage: with rod iron is main muscle, and automatic cut-to-length cuts off, with automatic hot junction, rod iron two ends heading, with seam welder with stirrup in the shape of a spiral shape automatically be welded on the main muscle;
3) reinforcing cage is connected with end plate: the rod iron that the helical form stirrup is gone up in cut-out and heading and welding is processed pack into mould and end plate of reinforcing cage and is coupled together; End plate is installed cuff outward; End plate connects the tensioning head plate and the tailgate of both mold ends, and the tensioning head plate is connected with gripper shoe and stretch-draw leading screw again;
4) fluid concrete in mould;
5) reinforcing cage is implemented the stretch-draw of integrated prestress definite value;
6) the polygonal pile concrete in the mould is implemented centrifugal rotational forming after closing up mould;
7) stream curing: implement an atmospheric steam curing in steam-cured pond;
8) the finished product demoulding: directly in mould, sling;
9) water is supported: secondary maintenance in the pond.
Claims (6)
1. octagon concrete centrifugal stake includes pile body, and said pile body is a hollow-core construction; The outline of its cross section is an octagon, and pile body includes reinforcing cage, concrete; Said reinforcing cage comprises skeleton master muscle and stirrup; Said stirrup shape in the shape of a spiral is welded on the said skeleton master muscle continuously, and the two ends of said pile body are provided with the metal end plate that is connected with reinforcing cage, and said metal end plate and pile body connecting portion are provided with cuff; It is characterized in that: the different bond length on eight limits of said pile body are respectively 40mm, 45mm, 50mm, 55mm, and the long edge lengths of the difference that different minor faces are corresponding is all unequal, and forms multiple piles with different type; Each limit corner of every kind of pile body all is stress and eliminates circular arc, and arc radius R equates that all R is respectively 18mm, 22mm, 24mm, 26mm according to piles with different type arc radius.
2. octagon concrete centrifugal according to claim 1 stake; It is characterized in that: the profile of said metal end plate is identical with said pile body profile; Four limits of said metal end plate are provided with bevel for welding, and central authorities are circular holes identical with the central through hole diameter of said pile body.
3. octagon concrete centrifugal according to claim 1 stake is characterized in that: said skeleton master muscle is a rod iron, and said skeleton master muscle is parallel with the pile body outer contour, and said skeleton master muscle and said metal end plate junction are provided with heading.
4. according to the moulding form of the said octagon concrete centrifugal of claim 1 stake; It is characterized in that: said moulding form includes upper die and lower die and is separately fixed at the locker on the upper and lower mould; The inner chamber cross section of upper die and lower die is all triangular in shape; The moulding form inner chamber cross section that patrix and counterdie fasten back formation is a square, and foursquare four interior angles are the circular arc interior angle that radius equates, piles with different type die arc radius is respectively 18mm, 22mm, 24mm, 26mm; Said locker includes bolt, nut, when patrix and counterdie matched moulds, through spring bolts and nuts is compressed and matched moulds.
5. according to the moulding form of the said octagon concrete centrifugal of claim 4 stake; It is characterized in that: on said patrix and position that counterdie engages, be provided with alignment pin; Counterdie is provided with the locating hole corresponding with alignment pin with the position that patrix engages; Alignment pin and locating hole closely cooperate during matched moulds, fixedly the matched moulds position.
6. according to the moulding form of the said octagon concrete centrifugal of claim 4 stake, it is characterized in that: on the correspondence position at said patrix and counterdie matched moulds place, be symmetrically installed with suspension ring respectively.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012102881781A CN102808404A (en) | 2012-08-13 | 2012-08-13 | Octagonal concrete centrifugal pile and forming mould thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012102881781A CN102808404A (en) | 2012-08-13 | 2012-08-13 | Octagonal concrete centrifugal pile and forming mould thereof |
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| CN102808404A true CN102808404A (en) | 2012-12-05 |
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| CN2012102881781A Pending CN102808404A (en) | 2012-08-13 | 2012-08-13 | Octagonal concrete centrifugal pile and forming mould thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103147439A (en) * | 2013-02-07 | 2013-06-12 | 江苏东浦管桩有限公司 | Pretensioned prestressing solid concrete pile |
| CN107160550A (en) * | 2017-07-14 | 2017-09-15 | 江苏汤辰机械装备制造股份有限公司 | A kind of easy-disassembling-assembling centrifugal mold |
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| CN202730748U (en) * | 2012-08-13 | 2013-02-13 | 天津建城基业集团有限公司 | Octagonal concrete centrifugal pile and forming mold thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103147439A (en) * | 2013-02-07 | 2013-06-12 | 江苏东浦管桩有限公司 | Pretensioned prestressing solid concrete pile |
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| CN107160550A (en) * | 2017-07-14 | 2017-09-15 | 江苏汤辰机械装备制造股份有限公司 | A kind of easy-disassembling-assembling centrifugal mold |
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Application publication date: 20121205 |