CN202745040U - Prestressed concrete centrifugal square pile and molding die thereof - Google Patents
Prestressed concrete centrifugal square pile and molding die thereof Download PDFInfo
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- CN202745040U CN202745040U CN 201220379084 CN201220379084U CN202745040U CN 202745040 U CN202745040 U CN 202745040U CN 201220379084 CN201220379084 CN 201220379084 CN 201220379084 U CN201220379084 U CN 201220379084U CN 202745040 U CN202745040 U CN 202745040U
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Abstract
The utility model provides a prestressed concrete centrifugal square pile. A pile body comprises a steel reinforcement cage and concrete. The steel reinforced cage comprises a framework main reinforcement and a stirrup. The stirrup is welded on the framework main reinforcement continuously in spiral mode, and two ends of the pile body are provided with metal end plates connected with the steel reinforcement cage. A connection portion between the metal end plates and the pile body is provided with a hoop, and circular arc radiuses R of the four corners of the pile body are respectively 18 mm, 22 mm, 26mm and 32mm. Simultaneously the utility model provides a molding die of the concrete centrifugal square pile. The concrete centrifugal square pile saves materials and is light in self-weight, not prone to damage, good in pile body ductility, large in pile bearing capacity, long in service life and good in bending resistance and shearing resistance. The molding die enables the pile body to demold easily, saves energy, reduces emission, guarantees tight die assembling during manufacture of the prestressed concrete centrifugal square pile, is convenient to operate, low in labor intensity, high in production efficiency and not easy in slurry leakage during centrifugation and guarantees pile body molding quality effectively.
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 a kind of concrete offcenter squared pile 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, produce occupied ground large, 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 advantages of that concrete strength of pile is high, 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.Show as bearing capacity of single pile relatively low, 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 easily mould being dished out from centrifuge leads to a disaster.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 easily occurs in the making moulding, causes product rejection.Centrifugal moulding mould is badly in need of improving.
Summary of the invention
One of the utility model purpose provides a kind of concrete offcenter squared pile and moulding form thereof, to reduce or to avoid the existing problem of prior art, be beneficial to make four limits of pile not fragile, bearing capacity is high, pile body ductility is good, the bending resistance shear behavior is good, and production efficiency is high.Two of the utility model purpose provides a kind of moulding form that meets the concrete offcenter squared pile of energy-saving and emission-reduction.
For addressing the above problem, the utility model provides a kind of concrete offcenter squared pile, include pile body, described pile body profile is square, the stake heart is columnar central through hole, and four limit corners of pile body all are stress and eliminate circular arc, arc radius equates, pile body includes reinforcing cage, concrete, and 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; Wherein: described metal end plate and pile body connecting portion are provided with cuff, and the arc radius R of pile body four limit corners is respectively 18mm, 22mm, 26mm, 32mm.
A kind of moulding form of concrete offcenter squared pile is provided simultaneously, wherein: described moulding form includes upper die and lower die, 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 forms after patrix and counterdie fasten is square, foursquare four interior angles are the circular arc interior angle that radius equates, the arc radius of moulding form is respectively 18mm, 22mm, 26mm, 32mm; Described locker includes bolt, nut, when patrix and counterdie matched moulds, by spring bolts and nuts is compressed and matched moulds.
Effect of the present utility model is that the production mechanization degree is high, the quality assurance degree is high, owing to adopting 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 offcenter squared 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 the prestress concrete offcenter squared pile 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 the utility model concrete offcenter squared pile;
Fig. 2 is the top view of the utility model concrete offcenter squared pile;
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 the structural representation of the utility model mould;
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
7, cuff 8, groove 9, flange connecting plate 10, idler pulley 11, reinforcing rib
12, patrix 13, locker 14, counterdie 15, square opening 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 concrete offcenter squared pile of the present utility model and moulding form thereof.
Concrete offcenter squared pile structure of the present utility model is, include pile body, described pile body profile is square, the stake heart is columnar central through hole, four limit corners of pile body all are stress and eliminate circular arc, and arc radius is equal, and pile body includes reinforcing cage 1, concrete 2, described reinforcing cage 1 comprises skeleton master muscle 3 and stirrup 4, and described stirrup 4 is welded on the described skeleton master muscle 3 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 1; Described metal end plate 5 is provided with cuff 7 with the pile body connecting portion, and the arc radius R of pile body four limit corners is respectively 18mm, 22mm, 26mm, 32mm.
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, 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 forms after patrix and counterdie fasten is square, foursquare four interior angles are the circular arc interior angle that radius equates, the moulding form arc radius is respectively 18mm, 22mm, 26mm, 32mm; 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 of described patrix and counterdie joint 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, described concrete offcenter squared pile 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.Described pre-stress hollow square pile profile is square, the stake heart is columnar mesopore, and four limit corners of described concrete offcenter squared pile 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 18mm, be 22mm, be 26mm, be 32mm for the prestressed centrifugally square pile R of 600*600mm for the prestressed centrifugally square pile R of 500*500mm for the prestressed centrifugally square pile R of 450*450mm for the prestressed centrifugally square pile R of 400*400mm.The two ends of described concrete offcenter squared pile 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 described concrete hollow square pile.
As shown in Figure 5, the concrete offcenter squared pile moulding form 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 inner chamber cross section of counterdie 14 is triangular in shape, the moulding form inner chamber that patrix 12 forms after fastening with counterdie 14 is square, foursquare four interior angles are the circular arc interior angle that radius equates, are 18mm, are 22mm, are 26mm, are 32mm for the prestressed centrifugally square pile mould R of 600*600mm for the prestressed centrifugally square pile mould R of 500*500mm for the prestressed centrifugally square pile mould R of 450*450mm for the prestressed centrifugally square pile mould R of 400*400mm.。Symmetry has been installed suspension ring 28 respectively on the patrix 12 of patrix 12 and counterdie 14 joints 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 square opening 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, the inner chamber cross section of patrix 12, counterdie 14 is triangular in shape, the moulding form inner chamber that patrix 12 forms after fastening with counterdie 14 is square, and the radius R of the arm of angle 18 equates in four circular arcs of foursquare 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 foursquare inner chamber from overflowing from patrix 12 and the mating face of counterdie 14.
As shown in Figure 8, the moulding form inner chamber of formation was square after the inner chamber cross section of patrix 12, counterdie 14 patrix 12 triangular in shape 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.
Concrete offcenter squared pile provided by the utility model and moulding form thereof owing to having adopted hollow shape, so material-saving, from heavy and light, pile crown is connected with cuff, so that piling is not fragile when the building operations hammering, has improved product pile rate.The utility model concrete offcenter squared pile and mould thereof, main muscle is rationally distributed, stirrup is welded on the main muscle in the shape of a spiral, and pile body ductility is good, the one-tenth pile capacity is large, and the bending resistance shear behavior is good.The utility model, end plate has also strengthened the fastness that pile connects with bevel for welding.Mould of the present utility model can effectively have been saved the matched moulds time, has reduced labour intensity, has improved operating efficiency.
Claims (6)
1. concrete offcenter squared pile, include pile body, described pile body profile is square, the stake heart is columnar central through hole, four limit corners of pile body all are stress and eliminate circular arc, arc radius equates, pile body includes reinforcing cage (1), concrete (2), described reinforcing cage (1) comprises skeleton master muscle (3) and stirrup (4), described stirrup (4) is welded on the described skeleton master muscle (3) 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 (1); It is characterized in that: described metal end plate (5) is provided with cuff (7) with the pile body connecting portion, and the arc radius R of pile body four limit corners is respectively 18mm, 22mm, 26mm, 32mm.
2. concrete offcenter squared pile according to claim 1, it is characterized in that: the profile of described metal end plate (5) is identical with described pile body profile, 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.
3. concrete offcenter squared pile according to claim 1, it is characterized in that: described skeleton master muscle (3) is rod iron, 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) junction.
4. moulding form of described concrete offcenter squared pile according to claim 1, it is characterized in that: described moulding form includes upper die and lower die, 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 forms after patrix and counterdie fasten is square, foursquare four interior angles are the circular arc interior angle that radius equates, the arc radius of moulding form is respectively 18mm, 22mm, 26mm, 32mm; 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 concrete offcenter squared pile 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 concrete offcenter squared pile according to claim 4 is characterized in that: be symmetrically installed with respectively suspension ring on the patrix of described patrix and counterdie joint and counterdie.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220379084 CN202745040U (en) | 2012-08-01 | 2012-08-01 | Prestressed concrete centrifugal square pile and molding die thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220379084 CN202745040U (en) | 2012-08-01 | 2012-08-01 | Prestressed concrete centrifugal square pile and molding die thereof |
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| CN202745040U true CN202745040U (en) | 2013-02-20 |
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| CN 201220379084 Expired - Fee Related CN202745040U (en) | 2012-08-01 | 2012-08-01 | Prestressed concrete centrifugal square pile and molding die thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102776879A (en) * | 2012-08-01 | 2012-11-14 | 天津建城基业集团有限公司 | Concrete centrifugal square pile and forming mold thereof |
| CN103538147A (en) * | 2013-09-29 | 2014-01-29 | 国鼎(南通)管桩有限公司 | Special-shaped prestress combined support pile steel mold |
| CN103792120A (en) * | 2014-02-08 | 2014-05-14 | 江苏建华管桩有限公司 | Test mold for detecting strength of centrifugal concrete and detection method for strength of centrifugal concrete |
| CN105862855A (en) * | 2016-04-01 | 2016-08-17 | 张永虎 | Precast pile reinforcement structure and durable pile foundation |
| CN109968519A (en) * | 2019-04-18 | 2019-07-05 | 广东盖特奇新材料科技有限公司 | A kind of mortar leakage prevention concurrent mold |
| CN117513642A (en) * | 2023-12-18 | 2024-02-06 | 江苏海洋大学 | Prefabricated UHPC-HPC combined hollow thin-wall component and manufacturing method |
-
2012
- 2012-08-01 CN CN 201220379084 patent/CN202745040U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102776879A (en) * | 2012-08-01 | 2012-11-14 | 天津建城基业集团有限公司 | Concrete centrifugal square pile and forming mold thereof |
| CN103538147A (en) * | 2013-09-29 | 2014-01-29 | 国鼎(南通)管桩有限公司 | Special-shaped prestress combined support pile steel mold |
| CN103538147B (en) * | 2013-09-29 | 2015-10-21 | 国鼎(南通)管桩有限公司 | Special-shaped prestressing combination support pile punching block |
| CN103792120A (en) * | 2014-02-08 | 2014-05-14 | 江苏建华管桩有限公司 | Test mold for detecting strength of centrifugal concrete and detection method for strength of centrifugal concrete |
| CN103792120B (en) * | 2014-02-08 | 2016-01-20 | 江苏建华管桩有限公司 | The die trial of centrifugal concrete intensity detection and centrifugal concrete strength detecting method |
| CN105862855A (en) * | 2016-04-01 | 2016-08-17 | 张永虎 | Precast pile reinforcement structure and durable pile foundation |
| CN105862855B (en) * | 2016-04-01 | 2018-03-13 | 张永虎 | Durability pile foundation |
| CN109968519A (en) * | 2019-04-18 | 2019-07-05 | 广东盖特奇新材料科技有限公司 | A kind of mortar leakage prevention concurrent mold |
| CN117513642A (en) * | 2023-12-18 | 2024-02-06 | 江苏海洋大学 | Prefabricated UHPC-HPC combined hollow thin-wall component and manufacturing method |
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| 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: 20130220 Termination date: 20150801 |
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| EXPY | Termination of patent right or utility model |