CN202730748U - Octagonal concrete centrifugal pile and forming mold thereof - Google Patents
Octagonal concrete centrifugal pile and forming mold thereof Download PDFInfo
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- CN202730748U CN202730748U CN 201220399561 CN201220399561U CN202730748U CN 202730748 U CN202730748 U CN 202730748U CN 201220399561 CN201220399561 CN 201220399561 CN 201220399561 U CN201220399561 U CN 201220399561U CN 202730748 U CN202730748 U CN 202730748U
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Abstract
The utility model provides an octagonal concrete centrifugal pile and a forming mold of the octagonal concrete centrifugal pile. A pile body is in a hollow structure, the cross section of the pile body is an octagon, the sides of the octagon are different in length, according to the shape of the pile, the different short sides are respectively 40 mm, 45 mm, 50 mm and 55 mm, the corner of each side is in a stress-eliminating circular arc, the radiuses of the circular arcs are different, according to the shape of the pile, and the different radiuses R are respectively 18 mm, 22 mm, 24 mm and 26 mm. The octagonal concrete centrifugal pile and the forming mold of the octagonal concrete centrifugal pile have the advantages that the octagonal concrete centrifugal pile is material-saving, light in weight, not prone to damage and good in ductility of the pile body, the pile-forming quality is improved by 20%, the anti-bending anti-shearing performance is improved by 30%, the control of the production process and the manufacture of the mold are relatively easy, poor duality of concrete on the pile body caused by the damage to the pile in the process of transportation and construction is avoided, the bearing capacity of a single pile is improved by 30% compared with a common process, economy is good, the cost is saved by about 25%, the structural pile body is easy to remove from the forming mold, and energy conservation and emission reduction are achieved.
Description
Technical field
The utility model belongs to building field, relates to the improvement of a kind of foundation pile shape and structure in the building field.Specifically, be the stake of a kind of octagon concrete centrifugal and moulding form thereof.
Background technology
Existing preformed pile has a lot, if any concrete solid square pile, concrete hollow square pile, prestressed concrete pipe pile, pre-stress hollow square pile etc.Concrete solid square pile, concrete hollow square pile are generally non-prestressed prefabricated units, and it is large to produce occupied ground, and energy source consumption is large, and fabrication of reinforcing cage and concrete formation mostly are manually-operated, and mechanization degree is not high, and quality is difficult for guaranteeing; Anti-bending strength is poor, and lifting, transportation, construction transhipment easily 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, easily clips broken in the construction, and the stake breakage rate is high, less economical.The pile body steel using amount is large, and is uneconomical.Solid square pile is from great in addition, though hollow square pile adopts the drawing method moulding of loosing core, from heavy and light, other problem still exists.Though pile tube is 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 and easily rolls buttress, poor stability.
Pre existing prestressed concrete hollow square pile and moulding form thereof, such as Chinese patent " prestress high intensity concrete square pile and manufacture method 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 symmetrically through wires hole and tension force hole between circular hole and four limits; The stirrup of reinforcing cage is welded on the main muscle in the shape of a spiral 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 made from the moulding form of this patent; 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 interior concrete of pile body also is equally distributed; because the cross section of whole stake is asymmetrical design; the concrete that the two pairs of arc chord angle places are used is different; the concrete cover became uneven that causes each main muscle outer wrapping; thereby make pile body have open defect, affected good looking appearance and the quality of prestressed concrete square pile.For another example traditional square pile, 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 procedure 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 large.But its main muscle layout is reasonable not, and poor as main muscle, pile body anti-bending strength with prestressed reinforcement or plain bars.End plate four limit welding grooves have affected the pile connectivity robustness.The pile body cross section is quadrangle, and four jiaos of building operations piles very easily damage, and causes whole stake to be scrapped, and not only causes waste, but also can affect 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.Oval-shaped running wheel is when centrifuge rotates, and mould is dished out from centrifuge leads to a disaster easily.In addition, upper and lower mould all fastens with rabbet groove in the manufacturing process of pile for prestressed pipe, pre-stress hollow square pile, and the die bolt on the counterdie is by 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, the spillage phenomenon occurs easily in the making moulding, causes product rejection.Centrifugal moulding mould is badly in need of improving.
Summary of the invention
For structural deficiency in the prior art, one of the utility model purpose 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 widely piling.Two of the utility model purpose provides a kind of moulding form that meets the octagon concrete centrifugal stake of energy-saving and emission-reduction.
For achieving the above object, the technical solution adopted in the utility model provides the stake of a kind of octagon concrete centrifugal, include pile body, described pile body is hollow-core construction, and the outline of its cross section is octagon, pile body includes reinforcing cage, concrete, described reinforcing cage comprises skeleton master muscle and stirrup, described stirrup is welded on the described skeleton master muscle in the shape of a spiral continuously, the two ends of described pile body are provided with the metal end plate that is connected with reinforcing cage, and described metal end plate and pile body connecting portion are provided with cuff; Wherein: the different bond length on eight limits of described 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 utility model is that the production mechanization degree is high, the quality assurance degree is high, owing to adopt hollow shape, saves material more than 30%, from heavy and light, it is convenient to transport, stack, lifting, transportation, not fragile when transporting, and die sinking is convenient, the construction breakage rate is low, become pile integrality good, 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 pile is provided with alignment pin at patrix and counterdie joint, adopt during with the counterdie matched moulds patrix to be fixedly connected with nut on the counterdie with spring bolt at patrix, 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 easy demoulding of moulding pile body, strong assurance the pile body Forming Quality.
Description of drawings
Fig. 1 is the structural representation of octagon concrete centrifugal of the present utility model stake;
Fig. 2 is the top view of octagon concrete centrifugal of the present utility model 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 mould structure schematic diagram of the present utility model;
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, groove 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
Reaching by reference to the accompanying drawings embodiment is illustrated octagon concrete centrifugal of the present utility model stake and moulding form thereof.
Octagon concrete centrifugal of the present utility model stake, include pile body, described pile body is hollow-core construction, the outline of its cross section is octagon, and pile body includes reinforcing cage 1, concrete 2, described reinforcing cage 2 comprises skeleton master muscle 3 and stirrup 4, described stirrup is welded on the described skeleton master muscle in the shape of a spiral continuously, and the two ends of described pile body are provided with the metal end plate 5 that is connected with reinforcing cage, and described metal end plate 5 is provided with cuff 7 with the pile body connecting portion; Different minor faces 6 length on eight limits of described 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 described metal end plate 5 is identical with described pile body profile, and four limits of described 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 described pile body.Described skeleton master muscle 3 is rod iron, and described skeleton master muscle 3 is parallel with the pile body outer contour, and described skeleton master muscle 3 is provided with heading with described metal end plate 5 junctions.
Described moulding form includes upper die and lower die and is separately fixed at 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 forms after patrix and counterdie fasten is square, foursquare four interior angles are the circular arc interior angle that radius equates, the different size die circular radius is respectively 18mm, 22mm, 24mm, 26mm; Described locker includes bolt, nut, when patrix and counterdie matched moulds, by spring bolts and nuts is compressed and matched moulds.
The position that engages with counterdie at described patrix is provided with alignment pin, and 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 described patrix and counterdie matched moulds place and counterdie, be symmetrically installed with respectively suspension ring.
Concrete offcenter squared pile of the present utility model and moulding form function thereof are achieved in that
Shown in Fig. 1,3, the stake of described octagon concrete centrifugal comprises reinforcing cage 1, concrete 2.Described reinforcing cage 1 comprises skeleton master muscle 3 and stirrup 4, and the stirrup 4 of reinforcing cage is welded on the described skeleton master muscle 3 in the shape of a spiral continuously.The stake of described octagon concrete centrifugal is hollow-core construction, and the outline of its cross section is octagon.This octagonal each edge lengths is unequal, and eight limit corners of described 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 that the 18mm minor face is 40mm, is that the 22mm minor face is 45mm, is that the 24mm minor face is 50mm, is that the 26mm minor face is 55mm for the centrifugal pile R of 600*600mm for the centrifugal pile R of 500*500mm for the centrifugal pile R of 450*450mm for the centrifugal pile R of 400*400mm.The two ends of described octagon concrete centrifugal stake are provided with the metal end plate 5 that is connected with described reinforcing cage 1, have further strengthened the intensity of pile crown.Four limits of described metal end plate 5 are provided with bevel for welding 8.
Shown in Fig. 2,4, described metal end plate 5 central authorities are and the stake circular hole that bore dia is identical in the heart that four limits of described metal end plate 5 are provided with bevel for welding 8.Described 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 described cuff 7 is 110mm-320mm.It is the projection of 1-3mm that described cuff 7 is provided with 2 road radiuses at the axial direction along the stake of described 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.The moulding form inner chamber that patrix 12 forms after fastening with counterdie 14 is octagon, 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 mould R of 600*600mm for the centrifugal pile mould R of 500*500mm for the centrifugal pile mould R of 450*450mm for the centrifugal pile mould 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 the moulding form inner chamber that patrix 12 forms after fastening with counterdie 14 is octagon, 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, the moulding form inner chamber of formation was octagon after patrix 12 fastened with counterdie 14.Patrix 12 is fixedly connected with 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 utility model 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 thereafter and eliminate circular arc, press figure sample car, plane processed finished products
2) make reinforcing cage: take rod iron as main muscle, automatic cut-to-length cuts off, and with automatic hot junction, rod iron two ends heading, automatically is welded in the shape of a spiral stirrup on the main muscle with seam welder;
3) reinforcing cage is connected with end plate: the rod iron of cut-out and heading and the upper helical form stirrup of welding is made pack into mould and end plate of reinforcing cage couple together; End plate is installed cuff outward; Tensioning head plate and the tailgate at end plate connecting mold two ends, tensioning head plate are connected with gripper shoe and stretch-draw leading screw again;
4) fluid concrete in the mould;
5) reinforcing cage is implemented the stretch-draw of integrated prestress definite value;
6) close up behind the mould polygonal pile concrete in the mould is implemented the centrifugal rotation moulding;
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, include pile body, described pile body is hollow-core construction, the outline of its cross section is octagon, and pile body includes reinforcing cage, concrete, described reinforcing cage comprises skeleton master muscle and stirrup, described stirrup is welded on the described skeleton master muscle in the shape of a spiral continuously, and the two ends of described pile body are provided with the metal end plate that is connected with reinforcing cage, and described 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 described 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 described metal end plate is identical with described pile body profile, four limits of described metal end plate are provided with bevel for welding, and central authorities are circular holes identical with the central through hole diameter of described pile body.
3. octagon concrete centrifugal according to claim 1 stake is characterized in that: described skeleton master muscle is rod iron, and described skeleton master muscle is parallel with the pile body outer contour, and described skeleton master muscle and described metal end plate junction are provided with heading.
4. the moulding form of described octagon concrete centrifugal stake according to claim 1, it is characterized in that: described moulding form includes upper die and lower die and is separately fixed at 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 forms after patrix and counterdie fasten is square, foursquare four interior angles are the circular arc interior angle that radius equates, piles with different mould arc radius is respectively 18mm, 22mm, 24mm, 26mm; Described locker includes bolt, nut, when patrix and counterdie matched moulds, by spring bolts and nuts is compressed and matched moulds.
5. the moulding form of described octagon concrete centrifugal stake according to claim 4, it is characterized in that: the position that engages with counterdie at described patrix is 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. the moulding form of described octagon concrete centrifugal stake according to claim 4 is characterized in that: be symmetrically installed with respectively suspension ring on the correspondence position at described patrix and counterdie matched moulds place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220399561 CN202730748U (en) | 2012-08-13 | 2012-08-13 | Octagonal concrete centrifugal pile and forming mold thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220399561 CN202730748U (en) | 2012-08-13 | 2012-08-13 | Octagonal concrete centrifugal pile and forming mold thereof |
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| CN202730748U true CN202730748U (en) | 2013-02-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220399561 Expired - Fee Related CN202730748U (en) | 2012-08-13 | 2012-08-13 | Octagonal concrete centrifugal pile and forming mold thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102808404A (en) * | 2012-08-13 | 2012-12-05 | 天津建城基业集团有限公司 | Octagonal concrete centrifugal pile and forming mould thereof |
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2012
- 2012-08-13 CN CN 201220399561 patent/CN202730748U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102808404A (en) * | 2012-08-13 | 2012-12-05 | 天津建城基业集团有限公司 | Octagonal concrete centrifugal pile and forming mould thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130213 Termination date: 20150813 |
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| EXPY | Termination of patent right or utility model |