CN102995635A - Prestressed concrete square pile and manufacturing method thereof - Google Patents
Prestressed concrete square pile and manufacturing method thereof Download PDFInfo
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- CN102995635A CN102995635A CN2012105461715A CN201210546171A CN102995635A CN 102995635 A CN102995635 A CN 102995635A CN 2012105461715 A CN2012105461715 A CN 2012105461715A CN 201210546171 A CN201210546171 A CN 201210546171A CN 102995635 A CN102995635 A CN 102995635A
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Abstract
The invention discloses a prestressed concrete square pile and a manufacturing method thereof. The prestressed concrete square pile comprises a steel-bar cage, four wave spiral casings, a pile tip component, a pile-end net piece and high-strength concrete, wherein the steel-bar cage is prepared by adopting steel rods for a prestressed concrete pile and hoops in a spiral-sliding welding manner, and the section of the steel-bar cage is round; the wave spiral casings are uniformly distributed in the circumferential direction of the top end of the pile and are inserted into the inner side of the steel-bar cage; the pile-end net piece is fixedly connected with the steel-bar cage at the top end of the pile; the spiral casings, the pile-end net piece, the steel-bar cage and the pile tip component form a whole skeleton; the whole skeleton and the high-strength concrete are combined into a whole solid pile body which consists of a pile main body section and a pile tip section; the section of the pile main body section is square; and the pile tip section is square-cone-shaped. According to the invention, high-strength concrete is adopted for one-step casting and forming, so that the whole strength of the square pile can be improved, the connecting cost of the pile tip component and the steel-bar cage can be reduced and the capability of the square pile for penetrating into the rock can be improved.
Description
Technical field
The present invention relates to building materials production and processing field, specifically relate to a kind of prestressed concrete solid pile, and a kind of preparation method of prestressed concrete solid pile.
Background technology
Multiple prestressed concrete solid pile and preparation method thereof is arranged in the prior art, such as whole solid square pile of a kind of steel pile tip fully prestressed concrete and processing method thereof wherein, when pile body is made, make first stirrup, penetrate again prestressing force master muscle, carry out colligation at stirrup and prestressing force master muscle junction at last, not only processing bothers, efficient is low, is difficult to also guarantee that stirrup and prestressing force master muscle fit together.In addition, because what reinforcing cage adopted is technology for binding, so by designing requirement, the diameter of reinforcing cage prestressing force master muscle must be larger more than 20% than the diameter of the reinforcing cage prestressing force master muscle that adopts welding procedure, the consumption of reinforcing cage prestressing force master muscle is large, consumptive material is many, has greatly improved manufacturing cost.Also have a kind of prestressed concrete solid pile and preparation method thereof, it adopts a plurality of reinforcing cages, in actual production process, and when prestressing force master muscle is above greater than 12, complex production process, wayward.Adopt in addition a plurality of reinforcing cages can't place the pile top once-forming.If need pile top, then need to be connected separately with pile body, not only bothered but also affected the bulk strength of pile body.Two kinds of above-mentioned methods, complex process when pile body is connected with cushion cap, cost is higher.
In addition, two kinds of above-mentioned methods are under the hydrogeological conditions that the anticorrosive properties such as salt-soda soil, coastal area are had relatively high expectations, and its application also can be restricted.
This shows, be necessary to prestressed concrete pile pile body in the prior art with and preparation method thereof improve.
Summary of the invention
Task of the present invention be to solve prestressed concrete pile pile body in the prior art with and preparation method thereof the technological deficiency that exists, provide a kind of prestressed concrete square pile, and a kind of preparation method of prestressed concrete square pile.
Its technical solution is:
A kind of prestressed concrete square pile comprises reinforcing cage, four ripple screw shells, pile top assembly, stake end net sheet and high-strength concretes; The main muscle of reinforcing cage adopts the prestressed concrete pile rod iron, and reinforcing cage is slided to weld by the stirrup curl by main muscle and makes, and its section is positive circle; The position of four ripple screw shells is in the stake top of square pile, week on the stake top upwards evenly arranges, the ripple screw shell is plugged in the reinforcing cage inboard, stake end net sheet also is in the stake top of square pile, and be fixedly connected with reinforcing cage, above-mentioned ripple screw shell, stake end net sheet, reinforcing cage, pile top assembly form whole skeleton, whole skeleton and high-strength concrete are formed whole solid pile body, whole solid pile body is comprised of stake main paragraph and pile top section, the section of stake main paragraph is positive square, pile top Duan Weifang taper.
Above-mentioned reinforcing cage is made n 〉=2 by 4 * n root master muscle by the stirrup roll welding of sliding in the shape of a spiral.
The length of above-mentioned each waveform screw shell is 1m, is fixedly connected with the stirrup of reinforcing cage by colligation or welding.
The thickness of being built formed reinforcement cover by above-mentioned high-strength concrete is 40～60mm.
Above-mentioned pile top assembly comprises pile top steel plate and four non-prestressed pile top dowels; The pile top dowel be positioned at the pile top section around, the pile top steel plate is steel plate steel boots, the one end is pointed, is welded with parallels or short muscle between the other end and pile top dowel; The outer colligation stirrup of pile top dowel.
Above-mentioned pile top assembly comprises pile top steel plate and four piles point dowel, the pile top dowel be positioned at the pile top section around, the pile top steel plate is square steel plate, it welds with the pile top dowel; The outer colligation stirrup of pile top dowel.
Four corners of above-mentioned stake main paragraph are chamfering, and chamfering is of a size of 10～30mm, or 10 * 45 °～30 * 45 °.
The side surface of above-mentioned whole solid pile body is provided with the concrete hemispherical protuberances every certain design pitch.
A kind of preparation method of above-mentioned prestressed concrete square pile comprises the steps:
The a materials are prepared, and according to the size of required processing square pile, process not stake end net sheet, the pile top assembly of concreting, prepare prestressed concrete pile with rod iron and waveform screw shell;
B adopts sliding welding machine, and the method for welding prepares reinforcing cage to slide;
C chooses four waveform screw shells and inserts the reinforcing cage inboard, be fixedly connected with by colligation or welding manner with the stirrup of reinforcing cage, the placement stake is held the net sheet and is fixedly connected with the stirrup of reinforcing cage by colligation or welding manner, the pile top assembly is installed and is fixedly connected with stirrup by colligation or welding manner, make thus the whole skeleton of square pile;
D prepare to be used for makes the mould of square pile, and on mould separant coating, be installed in the whole skeleton cage of above-mentioned square pile on the mould and tighten tensioning equipment, press the tension class requirement of solid square pile product to the stretch-draw of reinforcing bar To Implement Pre, lock anchoring after reaching requirement; Then enter step e;
E prepares high performance concrete, is poured in the mould, and shakes tamping; Then enter step f;
F adopts natural curing or stream curing; When concrete strength reach normal intensity 70% the time, decontrol and cut off unnecessary prestressing force master muscle, namely obtain the solid square pile finished product after wiping with high-grade cement mortar after stake end, pile top prestressing force master muscle are cut off.
The present invention has following useful technique effect:
Among the present invention, reinforcing cage master muscle adopts the prestressed high-strength reinforcing bar, stirrup adopts high-carbon steel wire machinery roll welding moulding, ripple screw shell, stake end net sheet, reinforcing cage, pile top assembly form whole skeleton, adopt the high-strength concrete one-time cast-forming, can improve the bulk strength of square pile, reduce the link cost of pile top assembly and reinforcing cage, improve the embedding ability that penetrates of square pile.In addition, by presetting the waveform screw shell, make things convenient for being connected of square pile and cushion cap, it is more reliable that cushion cap is connected with pile body.
Description of drawings
Below in conjunction with accompanying drawing and the specific embodiment the present invention is illustrated further:
Fig. 1 is the structural principle schematic diagram of a kind of embodiment of prestressed concrete square pile among the present invention.
Fig. 2 is that the A-A of Fig. 1 cuts open and shows the structural principle schematic diagram.
Fig. 3 is that the B-B of Fig. 1 cuts open and shows the structural principle schematic diagram.
Fig. 4 is that the C-C of Fig. 1 cuts open and shows the structural principle schematic diagram.
Fig. 5 to Fig. 7 is the structural principle schematic diagram of other several embodiments of prestressed concrete square pile among the present invention, shows section structure.
The main muscle of 1. reinforcing cages among the figure, the 2. stirrup of reinforcing cage, 3. corrugated thread sleeve pipe, a 4. end net sheet, 5. reinforcement cover, 6. the non-prestressed dowel of pile top is 7. lacked muscle or parallels, 8. pile top steel plate.
The specific embodiment
In conjunction with Fig. 1, Fig. 2, Fig. 3 and Fig. 4, a kind of prestressed concrete square pile comprises reinforcing cage, four ripple screw shells, pile top assembly, stake end net sheet and high-strength concretes.The main muscle of above-mentioned reinforcing cage adopts the prestressed concrete pile rod iron, and reinforcing cage is slided to weld by the stirrup curl by main muscle and makes, and its section is positive circle.The position of above-mentioned four ripple screw shells is in the stake top of square pile, upwards evenly arranges in the week on stake top, and the ripple screw shell is plugged in the reinforcing cage inboard; The length of above-mentioned each waveform screw shell can be 1m, or determines its length according to designing requirement, is fixedly connected with the stirrup of reinforcing cage by colligation or welding, and waveform screw shell and pile body carry out monobloc cast; Square pile cooperates by the additional main muscle on screw shell and the cushion cap and realizes and being connected of cushion cap, and has both made things convenient for being connected of square pile and cushion cap, makes again cushion cap more reliable with being connected of pile body.Above-mentioned stake end net sheet also is in the stake top of square pile, and is fixedly connected with reinforcing cage.Above-mentioned ripple screw shell, stake end net sheet, reinforcing cage, pile top assembly form whole skeleton, whole skeleton and high-strength concrete are formed whole solid pile body, whole solid pile body is comprised of stake main paragraph and pile top section, and the section of stake main paragraph is positive square, pile top Duan Weifang taper.
In the aforesaid way, reinforcing cage is made n 〉=2 by 4 * n root master muscle by the stirrup roll welding of sliding in the shape of a spiral.What Fig. 1 mode was selected is 8 main muscle.Can certainly select 12 main muscle, 16 main muscle or 20 main muscle etc., in conjunction with referring to Fig. 5, Fig. 6 or Fig. 7.
Preferably, above-mentioned pile top assembly comprises pile top steel plate and four non-prestressed pile top dowels; The pile top dowel be positioned at the pile top section around, the pile top steel plate is steel plate steel boots, the one end is pointed, is welded with parallels or short muscle between the other end and pile top dowel; The outer colligation stirrup of pile top dowel.
Preferably, above-mentioned pile top assembly comprises pile top steel plate and four piles point dowel, the pile top dowel be positioned at the pile top section around, the pile top steel plate is square steel plate, it welds with the pile top dowel; The outer colligation stirrup of pile top dowel.
The thickness of preferably, building formed reinforcement cover by above-mentioned high-strength concrete can be 40～60mm.As to select label be the C60 concrete.
Preferably, four corners of above-mentioned stake main paragraph are chamfering, and chamfering is of a size of 10～30mm, or 10 * 45 °～30 * 45 °.
Preferably, the side surface of above-mentioned whole solid pile body is provided with the concrete hemispherical protuberances every certain design pitch.When square pile is used as Piles for Friction Piles, can increase pile body frictional force in soil.
A kind of preparation method of above-mentioned prestressed concrete square pile comprises the steps:
The a materials are prepared, and according to the size of required processing square pile, process not stake end net sheet, the pile top assembly of concreting, prepare prestressed concrete pile with rod iron and waveform screw shell;
B adopts sliding welding machine, and the method for welding prepares reinforcing cage to slide;
C chooses four waveform screw shells and inserts the reinforcing cage inboard, be fixed together by colligation or welding manner with the stirrup of reinforcing cage, the placement stake is held the net sheet and is fixedly connected with the stirrup of reinforcing cage by colligation or welding manner, the pile top assembly is installed and is fixedly connected with stirrup by colligation or welding manner, make thus the whole skeleton of square pile;
D prepare to be used for makes the mould of square pile, and on mould separant coating, be installed in the whole skeleton cage of above-mentioned square pile on the mould and tighten tensioning equipment, press the tension class requirement of solid square pile product to the stretch-draw of reinforcing bar To Implement Pre, lock anchoring after reaching requirement; Then enter step e;
E prepares high performance concrete, is poured in the mould, and shakes tamping; Then enter step f;
F adopts natural curing or stream curing; When concrete strength reach normal intensity 70% the time, decontrol and cut off unnecessary prestressing force master muscle, namely obtain the solid square pile finished product after wiping with high-grade cement mortar after stake end, pile top prestressing force master muscle are cut off.
The relevant technologies content of not addressing in the aforesaid way is taked or is used for reference prior art and can realize.
Need to prove that those skilled in the art can also make such or such easy variation pattern under the instruction of this manual, such as equivalent way, or obvious mode of texturing.Above-mentioned variation pattern all should be within protection scope of the present invention.
Claims (9)
1. a prestressed concrete square pile is characterized in that comprising reinforcing cage, four ripple screw shells, pile top assembly, stake end net sheet and high-strength concretes; The main muscle of reinforcing cage adopts the prestressed concrete pile rod iron, and reinforcing cage is slided to weld by the stirrup curl by main muscle and makes, and its section is positive circle; The position of four ripple screw shells is in the stake top of square pile, week on the stake top upwards evenly arranges, the ripple screw shell is plugged in the reinforcing cage inboard, stake end net sheet also is in the stake top of square pile, and be fixedly connected with reinforcing cage, above-mentioned ripple screw shell, stake end net sheet, reinforcing cage, pile top assembly form whole skeleton, whole skeleton and high-strength concrete are formed whole solid pile body, whole solid pile body is comprised of stake main paragraph and pile top section, the section of stake main paragraph is positive square, pile top Duan Weifang taper.
2. a kind of prestressed concrete square pile according to claim 1 is characterized in that: above-mentioned reinforcing cage is made n 〉=2 by 4 * n root master muscle by the stirrup roll welding of sliding in the shape of a spiral.
3. a kind of prestressed concrete square pile according to claim 1, it is characterized in that: the length of above-mentioned each waveform screw shell is 1m, is fixedly connected with the stirrup of reinforcing cage by colligation or welding.
4. a kind of prestressed concrete square pile according to claim 1, it is characterized in that: the thickness of being built formed reinforcement cover by above-mentioned high-strength concrete is 40～60mm.
5. a kind of prestressed concrete square pile according to claim 1, it is characterized in that: above-mentioned pile top assembly comprises pile top steel plate and four non-prestressed pile top dowels; The pile top dowel be positioned at the pile top section around, the pile top steel plate is steel plate steel boots, the one end is pointed, is welded with parallels or short muscle between the other end and pile top dowel; The outer colligation stirrup of pile top dowel.
6. a kind of prestressed concrete square pile according to claim 1 is characterized in that: above-mentioned pile top assembly comprises pile top steel plate and four piles point dowel, the pile top dowel be positioned at the pile top section around, the pile top steel plate is square steel plate, it welds with the pile top dowel; The outer colligation stirrup of pile top dowel.
7. a kind of prestressed concrete square pile according to claim 1 is characterized in that: four corners of above-mentioned stake main paragraph are chamfering, and chamfering is of a size of 10～30mm, or 10 * 45 °～30 * 45 °.
8. a kind of prestressed concrete square pile according to claim 1, it is characterized in that: the side surface of above-mentioned whole solid pile body is provided with the concrete hemispherical protuberances every certain design pitch.
9. the preparation method of a prestressed concrete square pile as claimed in claim 1 is characterized in that comprising the steps:
The a materials are prepared, and according to the size of required processing square pile, process not stake end net sheet, the pile top assembly of concreting, prepare prestressed concrete pile with rod iron and waveform screw shell;
B adopts sliding welding machine, and the method for welding prepares reinforcing cage to slide;
C chooses four waveform screw shells and inserts the reinforcing cage inboard, be fixedly connected with by colligation or welding manner with the stirrup of reinforcing cage, the placement stake is held the net sheet and is fixedly connected with the stirrup of reinforcing cage by colligation or welding manner, the pile top assembly is installed and is fixedly connected with stirrup by colligation or welding manner, make thus the whole skeleton of square pile;
D prepare to be used for makes the mould of square pile, and on mould separant coating, be installed in the whole skeleton cage of above-mentioned square pile on the mould and tighten tensioning equipment, press the tension class requirement of solid square pile product to the stretch-draw of reinforcing bar To Implement Pre, lock anchoring after reaching requirement; Then enter step e;
E prepares high performance concrete, is poured in the mould, and shakes tamping; Then enter step f;
F adopts natural curing or stream curing; When concrete strength reach normal intensity 70% the time, decontrol and cut off unnecessary prestressing force master muscle, namely obtain the solid square pile finished product after wiping with high-grade cement mortar after stake end, pile top prestressing force master muscle are cut off.
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| CN 201210546171 CN102995635B (en) | 2012-12-17 | 2012-12-17 | Prestressed concrete square pile and manufacturing method thereof |
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| CN103262801A (en) * | 2013-06-10 | 2013-08-28 | 乔昌玉 | Floor heating board for cultivation and production method of floor heating board |
| CN103737715A (en) * | 2014-01-02 | 2014-04-23 | 福建省大地管桩有限公司 | Sharp-end type concrete pipe pile and production method thereof |
| CN103882857A (en) * | 2014-03-17 | 2014-06-25 | 俞向阳 | Pre-tensioning method centrifugal concrete pile with steel strands and manufacturing method |
| CN103898902A (en) * | 2014-03-17 | 2014-07-02 | 俞向阳 | Pre-tensioning method centrifugal concrete pile with steel strands and manufacturing method |
| CN112030723A (en) * | 2020-07-31 | 2020-12-04 | 中南大学 | Bridge pier column and pier column joint structure thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103882857A (en) * | 2014-03-17 | 2014-06-25 | 俞向阳 | Pre-tensioning method centrifugal concrete pile with steel strands and manufacturing method |
| CN103898902A (en) * | 2014-03-17 | 2014-07-02 | 俞向阳 | Pre-tensioning method centrifugal concrete pile with steel strands and manufacturing method |
| CN103882857B (en) * | 2014-03-17 | 2015-12-30 | 俞向阳 | A kind of pre-tensioning system centrifugal concrete pile and manufacture method with steel strand |
| CN112030723A (en) * | 2020-07-31 | 2020-12-04 | 中南大学 | Bridge pier column and pier column joint structure thereof |
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| CN102995635B (en) | 2013-09-18 |
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Denomination of invention: Prestressed concrete square pile and manufacturing method thereof Effective date of registration: 20140508 Granted publication date: 20130918 Pledgee: Qingdao Huitong Chinese financing Company limited by guarantee Pledgor: Qingdao Haohe Concrete Products Co., Ltd. Registration number: 2014990000338 |
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Date of cancellation: 20150728 Granted publication date: 20130918 Pledgee: Qingdao Huitong Chinese financing Company limited by guarantee Pledgor: Qingdao Haohe Concrete Products Co., Ltd. Registration number: 2014990000338 |
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