CN103266595A - Rigid pile for composite foundation treatment and production method thereof - Google Patents
Rigid pile for composite foundation treatment and production method thereof Download PDFInfo
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- CN103266595A CN103266595A CN2013102157633A CN201310215763A CN103266595A CN 103266595 A CN103266595 A CN 103266595A CN 2013102157633 A CN2013102157633 A CN 2013102157633A CN 201310215763 A CN201310215763 A CN 201310215763A CN 103266595 A CN103266595 A CN 103266595A
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Abstract
The invention provides a rigid pile for a composite foundation treatment. The rigid pile comprises a framework cage and concrete. The framework cage comprises a longitudinal rib which bears longitudinal stress and a transverse rib which bears shear forces, the longitudinal rib is arranged longitudinally along a pile body, the transverse rib is fixedly arranged on the longitudinal rib in a spiral mode, a cap bag is arranged on the end portion of the longitudinal rib, and a longitudinal through hole is formed in the cap bag. According to the rigid pile, no hoops or end plates are arranged at two ends of the rigid body, the rigid pile is connected to the composite foundation through the cap bag and an anchor bolt to achieve prestress tension, operation is convenient, production efficiency is improved, and production cost is reduced.
Description
Technical field
The present invention relates to concrete prefabricated product field, relate in particular to a kind of constructional materials and production method thereof for the building lot processing.
Background technology
The pile foundation that is used for the ground processing at present mainly is to adopt the CFG stake, it is CFG, adding water by rubble, aggregate chips, sand, flyash mixed cement mixes and stirs, with various pile machineries make the stake, its strength grade is a kind of type between rigid pile and flexible pile between C15-C25.CFG stake and inter-pile soil are together, form CFG pile composite foundation co-operation by mattress layer, but the CFG stake self does not contain arrangement of reinforcement, and be to stir by poured in place concrete to form, because the engineering site influence factor is more, as Changes in weather, ambient influnence, manually-operated etc., pile quality is difficult to guarantee long construction period.
In addition, the part engineering has adopted prefabricate concrete pile to substitute the CFG stake and has been applied in the foundation treatment engineering, as concrete tubular pile, hollow square pile etc. in order to overcome the interference of on-the-spot factor.Though these concrete prefabricated product pile strengths are higher, owing to adopted the two ends of high-intensity prestressed reinforcement, stake to adopt steel such as pile protection hoop, end plate, to compare with the CFG stake, its cost cost is higher.
In addition, in the prior art, in the manufacture process of pile tube or side stake, end plate and the cuff accessory that is absolutely necessary.Because, when the prestressed reinforcement to pile tube or side's stake carries out stretch-draw, one side of end plate needs to fixedly connected by nut etc. with the stretch-draw plate, the opposite side of end plate need carry out snapping by dowel hole and main muscle, the power of the generation of stretch-draw machine finally is delivered to main muscle, thereby realizes the stretch-draw to prestressed reinforcement.That is to say that in the prior art, end plate is to pile tube and be indispensable parts, especially when main muscle was carried out prestressed stretch-draw, end plate was essential especially.Simultaneously, for end plate being fixed on the two ends of pile body, need cuff be set at the pile body two ends in the prior art.But because cuff and end plate all are the steel materials, so cost of production is higher, and manufacture process is more complicated also.
Summary of the invention
For solving the problems of the technologies described above, the invention provides that a kind of comprehensive cost is low, pile strength is high, bearing capacity is high, good, the no pile protection hoop of cracking resistance anti-bending strength, no end plate, rigid pile and the production method of handling for composite foundation thereof simple to operate, stay-in-grade.
The structure of a kind of rigid pile of handling for composite foundation provided by the invention is as follows: comprise skeleton cage and concrete, described skeleton cage comprises the longitudinal rib of longitudinal stress and is subjected to the horizontal bar of shearing force, described longitudinal rib is along vertical setting of pile body, described horizontal bar shape in the shape of a spiral is fixed on the described longitudinal rib, wherein, the end of described longitudinal rib also is provided with cap bag, and described cap bag longitudinally has through hole.
The external surface of described cap bag has screw thread.
Described longitudinal rib is prestressed reinforcement, and the end of described prestressed reinforcement has pier nose.
The diameter at the through hole two ends of described cap bag is identical, and the pier nose of described prestressed reinforcement is stuck on the cap bag.
The through hole of described cap bag is counter sink, the diameter difference at described through hole two ends, and the pier nose of described prestressed reinforcement is contained in the described counter sink.
The inner surface of described cap bag also has screw thread.
Described longitudinal rib is the fibre-reinforced plastics muscle, described fibre-reinforced plastics muscle surface has screw thread, the inner surface of described cap bag also arranges screw thread, and the screw thread on the screw thread of described cap bag inner surface and described fibre-reinforced plastics muscle surface is a pair of assembling screw thread.
The other end of described cap bag is used for being connected with the stretch-draw assembly.
Described stretch-draw assembly comprises crab-bolt and stretch-draw plate, described crab-bolt comprises head and bar portion, described bar portion is the sleeve-shaped of hollow, described sleeve lining is provided with the internal thread that the screw thread with described cap bag external surface assembles, and described stretch-draw plate is provided with the anchor hole of passing for described anchor bolt stem.
The part of the spacing of the horizontal bar of described skeleton cage between the 2.1m of the pile body two ends of distance rigid pile is 50-90mm, is 100-200mm at the pile body remainder.
Described skeleton cage also longitudinally arranges nonprestressed reinforcement.
The spacing of the longitudinal rib of described reinforcing cage is greater than 3/4 of the particle diameter of coarse aggregate in the concrete.
Described rigid pile pile body is the cross section hollow pile of hollow shape or regular polygon ringwise.
Described rigid pile pile body is the hollow pile that cross section is regular polygon, has arc chord angle between the adjacent edge of the hollow pile of described regular polygon, and arc radius is all identical.
The hollow pile of described regular polygon is the quadrangle hollow pile, and four jiaos of described quadrangle hollow pile have arc chord angle, and four jiaos of described skeleton cage also have arc chord angle; Described skeleton cage arrives the distance on each limit of described pile body and arrives the outer peripheral distance of described pile body bight arc chord angle all identical.
The present invention also provides a kind of manufacture method of the rigid pile of handling for composite foundation simultaneously, may further comprise the steps:
(1) makes concrete: concrete material is put into mixer in certain sequence stir and make concrete;
(2) longitudinal rib fixed length cutting and cap bag are installed: the longitudinal rib of fixed length cutting Len req, again cap bag is installed in the two ends of described longitudinal rib respectively, and described cap bag longitudinally has through hole, and external surface has screw thread;
(3) make the skeleton cage: horizontal bar is connected forms the reinforcing cage that the cross section is polygon or circle on the whole on the described longitudinal rib;
(4) concrete distributing: install baffle and stretch-draw plate at the two ends of described reinforcing cage, described baffle and described reinforcing cage are fixed, integral body is put into mould then, and the outside of described baffle is enclosed with and only starches glue or rope, concrete is directly put into the punching block of reinforcing cage;
(5) prestressed stretch-draw: crab-bolt is provided, described crab-bolt comprises head and bar portion, described bar portion is the sleeve-shaped of hollow, described sleeve lining is provided with the internal thread that the screw thread with described cap bag external surface assembles, described stretch-draw plate is provided with the anchor hole of passing for described anchor bolt stem, is threaded with cap bag after the bar portion of crab-bolt being passed the anchor hole of stretch-draw plate; Again the stretch-draw plate is linked to each other with the stretch-draw machine, utilize the stretch-draw machine that described longitudinal rib is carried out prestressed stretch-draw;
(6) centrifugal: as whole punching block to be hung in carry out centrifugally in the centrifuge, after the centrifugal end centrifugal surplus slurry and the moisture content that comes out is toppled over totally;
(7) maintenance: mould is put into the maintenance pond carry out stream curing; It is foster, air-dry perhaps to carry out water, reaches 70% of design strength; Carry out again getting final product after the demoulding finished product.
Described longitudinal rib is prestressed reinforcement, and handle through pier nose the end of described prestressed reinforcement, and the pier nose of described prestressed reinforcement is stuck on the cap bag or is contained in the counter sink of cap bag.
Described longitudinal rib is the fibre-reinforced plastics muscle, described fibre-reinforced plastics muscle surface has screw thread, the inner surface of described cap bag also arranges screw thread, the screw thread on the screw thread of described cap bag inner surface and described fibre-reinforced plastics muscle surface is a pair of assembling screw thread, by the screw thread of described cap bag inner surface and the screw thread on described fibre-reinforced plastics muscle surface described cap bag and described fibre-reinforced plastics muscle is linked together.
Described baffle periphery is provided with only stock tank, and the described degree of depth of ending stock tank is 2-20mm.
In the step of described making skeleton cage, also be included in the described skeleton cage nonprestressed reinforcement is set.
Described concrete distributing and prestressed stretch-draw step are carried out simultaneously.
In described centrifugation step, described punching block rotating speed control is changeed 50～550, and the time was controlled at 5～20 minutes.
In described steam-cured pond maintenance step, mould put into the maintenance pond is quiet stopped 5～240 minutes, feed steam then, be raised to high temperature gradually by low temperature, temperature control is at 50～105 degree, and the time is 4～8 hours, and speed was controlled in 10～30 degree/half an hour.
Beneficial effect of the present invention is mainly as follows:
(1) cuff and end plate are not used in the pile body two ends of rigid pile of the present invention, but utilize the connected mode of cap bag and crab-bolt to carry out prestressed stretch-draw, and be easy to operate, improved production efficiency, and reduced cost of production;
(2) longitudinal rib of rigid pile of the present invention and stirrup can adopt the fibre-reinforced plastics muscle, has corrosion resistance and very strong tensile strength, durability and the vertical tensile strength of pile body have not only been improved, also alleviate pile body deadweight and cost of production, can be used for the foundation treatment engineering of deep-etching geology;
(3) rigid pile of the present invention can be designed to the quadrangle hollow pile; its four jiaos have arc chord angle; and four jiaos of skeleton cage also have arc chord angle; the skeleton cage arrives the distance on each limit of described pile body and arrives the pile body bight outer peripheral distance of arc chord angle all identical; the concrete cover uniformity of skeleton cage is conducive to improve the durability of rigid pile.
Description of drawings
Fig. 1 is the structural representation of an embodiment of rigid pile of the present invention;
Fig. 2 is the structural representation of cap bag of the present invention;
The structural representation that Fig. 3 is connected with prestressed reinforcement for cap bag of the present invention, wherein the diameter at cap bag two ends is identical;
Another structural representation that Fig. 4 is connected with prestressed reinforcement for cap bag of the present invention, wherein cap bag is the shape of counter sink;
Fig. 5 utilizes cap bag of the present invention longitudinal rib to be carried out the structural representation of prestressed stretch-draw;
Fig. 6 is the structure enlarged drawing at A place among Fig. 5;
Fig. 7 is the structural representation of baffle in the tensioning equipment;
Fig. 8 is the structure enlarged drawing at B place among Fig. 7.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, rigid pile of the present invention and production method thereof are further described.
Shown in Fig. 1-6, be an embodiment of rigid pile of the present invention.In this embodiment, described rigid pile comprises skeleton cage 1 and concrete 2, the cross section of pile body hollow shape ringwise wherein, the cross section of skeleton cage 1 is shape ringwise also, described skeleton cage 1 comprises the longitudinal rib 11 of longitudinal stress and is subjected to the horizontal bar 12 of shearing force, described longitudinal rib 11 is along vertical setting of pile body, and described horizontal bar 12 shape in the shape of a spiral is fixed on the described longitudinal rib 11, and the two ends of described longitudinal rib 11 also are provided with cap bag 3.Shown in above-mentioned accompanying drawing, the pile body two ends of described rigid pile do not arrange end plate and cuff.Fig. 2-shown in Figure 4 for another example, described cap bag 3 longitudinally has through hole 31, and external surface has screw thread, and cap bag 3 cross sections are hollow metal spare or the glass fiber reinforced plastic of annular.
In the present invention, described longitudinal rib 11 can adopt prestressed reinforcement, and described horizontal bar 12 can adopt the low-carbon (LC) cold drawn wire; Perhaps, described longitudinal rib 11 and horizontal bar 12 all adopt fibre-reinforced plastics muscle (being the FRP muscle).
As shown in Figure 3 and Figure 4, when described longitudinal rib 11 adopted prestressed reinforcement, longitudinal rib 11 with the mounting means of cap bag 3 is: prestressed reinforcement passed the through hole 31 of cap bag 3, with the pier nose machine prestressed reinforcement is carried out pier nose then, and cap bag 3 just can not come off like this.As shown in Figure 3, the diameter at through hole 31 two ends can be consistent, and pier nose 110 is stuck on the cap bag 3; Perhaps more preferably, as shown in Figure 4, the through hole 31 of cap bag 3 is arranged to the shape of counter sink, also is that upper diameter is big, and lower diameter is little, and the part that upper diameter is big is used for holding pier nose 110, and pier nose 110 just is contained in the cap bag 3 fully like this.In the structure of cap bag shown in Figure 3, the pier nose 110 of prestressed reinforcement exposes on cap bag 3, and in construction, pier nose 110 can be because suffering reasons such as hammering to cause splitting; And the advantage of cover cap shown in Figure 4 is, pier nose 110 is contained in the counter sink of cap bag 3 fully, can avoid in construction because suffering reasons such as hammering to cause splitting.
The surface of prestressed reinforcement can have screw thread usually; therefore preferably; the inner surface of described cap bag 3 also has screw thread, like this screw thread of the inner surface of cap bag 3 just can with the threaded engagement on prestressed reinforcement surface, cap bag 3 more firmly is fixed on the two ends of prestressed reinforcement.
When described longitudinal rib 11 and horizontal bar 12 all adopt the fibre-reinforced plastics muscle, the end of fibre-reinforced plastics muscle can't be carried out pier nose usually and be handled, but the surface of fibre-reinforced plastics muscle has screw thread, therefore longitudinal rib 11 with the mounting means of cap bag 3 is: the inner surface at cap bag 3 arranges screw thread, cooperate with the screw thread on the surface of fibre-reinforced plastics muscle, thereby cap bag 3 is fixed on the two ends of fibre-reinforced plastics muscle.Perhaps, when described longitudinal rib 11 and horizontal bar 12 all adopt the fibre-reinforced plastics muscle, directly utilize the screw thread on the surface of fibre-reinforced plastics muscle directly to be connected with internal thread on hereinafter described crab-bolt 4 sleeve linings, and do not use cap bag 3, can further reduce production costs like this, enhance productivity.
In the manufacturing process of rigid pile, need implement the prestressing force pulling process to longitudinal rib 11, it also is a plate and tailgate that the effect of above-mentioned cap bag 3 is used for the stretch-draw plate 5(of tensioning equipment just) be connected, and the pulling force that the stretch-draw machine produces is delivered on the longitudinal rib 11, thereby realize longitudinal rib 11 is carried out stretch-draw.As shown in Figure 5 and Figure 6, particularly, cap bag 3 with realize a plate or being connected by crab-bolt 4 of tailgate of tensioning equipment.Described crab-bolt 4 comprises head 41 and bar portion 42, and described bar portion 42 is the sleeve-shaped of hollow, and described sleeve lining is provided with internal thread, and this internal thread is identical with the screw thread specification of the external surface of above-mentioned cap bag 3, is a pair of assembling screw thread.
Above-mentioned stretch-draw plate 5 is provided with and the equal corresponding anchor hole 51 in the quantity of above-mentioned longitudinal rib 11 and position.The diameter of this anchor hole 51 is less than the diameter of the head 41 of above-mentioned crab-bolt 4 but more than or equal to the diameter of above-mentioned bar portion 42, thereby can allow above-mentioned bar portion 42 pass and stop that above-mentioned head 41 passes.Wherein, when carrying out tension operation, the anchor hole 51 that allows the bar portion 42 of above-mentioned crab-bolt 4 pass above-mentioned stretch-draw plate 5, assembling the internal thread on the sleeve lining and above-mentioned cap bag 3 again, thereby above-mentioned cap bag 3 is connected on above-mentioned plate or the tailgate, utilize the tension rod 7 of stretch-draw machine by the stretch-draw to stretch-draw plate 5, realize the prestressed stretch-draw to longitudinal rib 11.
For strengthening intensity and the durability of rigid pile, the part of the spacing of the horizontal bar 12 of described skeleton cage 1 between distance pile body two ends 2.1m is 50-90mm, is 100-200mm at the pile body remainder.Described skeleton cage 1 also can longitudinally arrange the nonprestressed reinforcement (not shown), and nonprestressed reinforcement does not participate in stretch-draw.The spacing of the longitudinal rib 11 of described reinforcing cage is greater than 3/4 of the particle diameter of coarse aggregate in the concrete, and coarse aggregate also namely plays skeleton function, particle diameter greater than the aggregate of 4.75 mm in concrete.
In the above-described embodiments, the cross section of described prefabrication pile body is hollow shape ringwise, and the cross section of skeleton cage 1 is shape ringwise also.But the cross section of above-mentioned prefabrication pile body also can be the hollow pile of regular polygon, or cross section is U-shaped sheet pile.That is to say, regardless of above-mentioned prefabrication profile, so long as contain presstressed reinforcing steel in the prefabrication and need carry out stretch-draw to its presstressed reinforcing steel the time, all can by utilize above-mentioned cap bag 3 of the present invention and stretch-draw assembly cooperate realize.
When the cross section of prefabrication pile body is the hollow pile of regular polygon, can have arc chord angle between the adjacent edge of the hollow pile of described regular polygon, and arc radius is all identical.Preferably, the hollow pile of above-mentioned regular polygon is the quadrangle hollow pile, and four jiaos of described quadrangle hollow pile have arc chord angle, and four jiaos of described skeleton cage 1 also have arc chord angle; More preferably described skeleton cage 1 arrives the distance on each limit of described pile body and arrives the outer peripheral distance of described pile body bight arc chord angle all identical, and the concrete cover of skeleton cage 1 all is uniformity like this, is conducive to improve the durability of rigid pile.
Preparation method to rigid pile of the present invention is elaborated below.
The production method of the rigid pile of handling for composite foundation provided by the invention may further comprise the steps:
(1) makes concrete: sand, stone, cement, extra material, water reducing agent, water by design proportion, weighing, are put into mixer simultaneously in certain sequence and stirred and make concrete;
(2) longitudinal rib 11 fixed length cutting and cap bag 3 installed: according to the design needs, the longitudinal rib 11 of fixed length cutting Len req is installed in cap bag 3 respectively the two ends of longitudinal rib 11 again;
(3) make skeleton cage 1: horizontal bar 12 is connected forms the reinforcing cage that the cross section is polygon or circle on the whole on the longitudinal rib 11; Has arc chord angle between the adjacent edge of the reinforcing cage of wherein said shape in many ways;
(4) cloth: install baffle and stretch-draw plate 5 at the two ends of described reinforcing cage, baffle and reinforcing cage are fixed, wherein as shown in Figure 7, the baffle periphery is provided with only stock tank 61, end stock tank 61 and can be set to " T " shape or semicircle, the unnecessary water slurry of centrifugal process generation can be contained in above-mentioned ending in the stock tank 61 like this; As shown in Figure 8, described depth H of ending stock tank is preferably 2-20mm; Then, integral body is put into mould, and parcel is only starched glue or rope in the outside of described baffle, and concrete is directly put into the punching block of reinforcing cage, forms taper and lays, and the punching block both sides are cleaned out;
(5) prestressed stretch-draw: anchor hole 51 backs of an end of crab-bolt 4 being passed stretch-draw plate 5 are connected with cap bag 3, stretch-draw plate 5 are linked to each other with the stretch-draw machine again, utilize the stretch-draw machine that described longitudinal rib 11 is carried out prestressed stretch-draw;
(6) centrifugal: as whole punching block to be hung in carry out centrifugally in the centrifuge, after the centrifugal end centrifugal surplus slurry and the moisture content that comes out is toppled over totally;
(7) maintenance: mould is put into the maintenance pond carry out stream curing; Carry out perhaps that water is supported, air-dry maintenance, preferably, reach 70% of design strength; Carry out again getting final product after the demoulding finished product.
In above-mentioned manufacturing process, described longitudinal rib 11 can adopt prestressed reinforcement, and described horizontal bar 12 can adopt the low-carbon (LC) cold drawn wire; Perhaps, described longitudinal rib 11 and horizontal bar 12 all adopt the fibre-reinforced plastics muscle.As mentioned above, when longitudinal rib 11 adopted prestressed reinforcement and fibre-reinforced plastics muscle respectively, the connected mode of longitudinal rib 11 and cap bag 3 is difference to some extent.
In the step of described making skeleton cage 1, also can be along skeleton cage 1 nonprestressed reinforcement vertically is set.
In above-mentioned manufacturing process, concrete distributing and prestressed stretch-draw separately carry out, but for enhancing productivity, aforesaid operations can carry out simultaneously, Yi Bian also namely carry out concrete distributing, Yi Bian carry out prestressed stretch-draw.
In described centrifugation step, described punching block rotating speed control is changeed 50～550, and the time was controlled at 5～20 minutes.
In described maintenance pond, carry out in the steam-cured step, mould is put into the maintenance pond is quiet stopped 5～240 minutes, feed steam then, be raised to high temperature gradually by low temperature, temperature control is at 50～105 degree, and the time is 4～8 hours, and speed was controlled in 10～30 degree/half an hour.
By above-mentioned explanation to rigid pile of the present invention and preparation method as can be known, cuff and end plate are not used in the pile body two ends of rigid pile of the present invention, but utilize the connected mode of cap bag 3 and crab-bolt 4 to carry out prestressed stretch-draw, and be easy to operate, improve production efficiency, and reduced cost of production.
In sum, the above is specific embodiments of the invention only, but the present invention is not limited thereto, and the variation that any those skilled in the art can think all should drop in protection scope of the present invention.
Claims (23)
1. one kind is used for the rigid pile that composite foundation is handled, comprise skeleton cage and concrete, described skeleton cage comprises the longitudinal rib of longitudinal stress and is subjected to the horizontal bar of shearing force, described longitudinal rib is along vertical setting of pile body, described horizontal bar shape in the shape of a spiral is fixed on the described longitudinal rib, it is characterized in that the end of described longitudinal rib also is provided with cap bag, described cap bag longitudinally has through hole.
2. rigid pile as claimed in claim 1 is characterized in that, the external surface of described cap bag has screw thread.
3. rigid pile as claimed in claim 2 is characterized in that, described longitudinal rib is prestressed reinforcement, and the end of described prestressed reinforcement has pier nose.
4. rigid pile as claimed in claim 3 is characterized in that, the diameter at the through hole two ends of described cap bag is identical, and the pier nose of described prestressed reinforcement is stuck on the cap bag.
5. rigid pile as claimed in claim 3 is characterized in that, the through hole of described cap bag is counter sink, the diameter difference at described through hole two ends, and the pier nose of described prestressed reinforcement is contained in the described counter sink.
6. as claim 4 or 5 described rigid pile, it is characterized in that the inner surface of described cap bag also has screw thread.
7. rigid pile as claimed in claim 2, it is characterized in that, described longitudinal rib is the fibre-reinforced plastics muscle, described fibre-reinforced plastics muscle surface has screw thread, the inner surface of described cap bag also arranges screw thread, and the screw thread on the screw thread of described cap bag inner surface and described fibre-reinforced plastics muscle surface is a pair of assembling screw thread.
8. rigid pile as claimed in claim 2 is characterized in that, the other end of described cap bag is used for being connected with the stretch-draw assembly.
9. rigid pile as claimed in claim 8, it is characterized in that, described stretch-draw assembly comprises crab-bolt and stretch-draw plate, described crab-bolt comprises head and bar portion, described bar portion is the sleeve-shaped of hollow, described sleeve lining is provided with the internal thread that the screw thread with described cap bag external surface assembles, and described stretch-draw plate is provided with the anchor hole of passing for described anchor bolt stem.
10. rigid pile as claimed in claim 2 is characterized in that, the part of the spacing of the horizontal bar of described skeleton cage between the 2.1m of the pile body two ends of distance rigid pile is 50-90mm, is 100-200mm at the pile body remainder.
11. rigid pile as claimed in claim 2 is characterized in that, described skeleton cage also longitudinally arranges nonprestressed reinforcement.
12. rigid pile as claimed in claim 2 is characterized in that, the spacing of the longitudinal rib of described reinforcing cage is greater than 3/4 of the particle diameter of coarse aggregate in the concrete.
13. rigid pile as claimed in claim 2 is characterized in that, described rigid pile pile body is the cross section hollow pile of hollow shape or regular polygon ringwise.
14. rigid pile as claimed in claim 13 is characterized in that, described rigid pile pile body is the hollow pile that cross section is regular polygon, has arc chord angle between the adjacent edge of the hollow pile of described regular polygon, and arc radius is all identical.
15. rigid pile as claimed in claim 14 is characterized in that, the hollow pile of described regular polygon is the quadrangle hollow pile, and four jiaos of described quadrangle hollow pile have arc chord angle, and four jiaos of described skeleton cage also have arc chord angle; Described skeleton cage arrives the distance on each limit of described pile body and arrives the outer peripheral distance of described pile body bight arc chord angle all identical.
16. a manufacture method that is used for the rigid pile of composite foundation processing may further comprise the steps:
(1) makes concrete: concrete material is put into mixer in certain sequence stir and make concrete;
(2) longitudinal rib fixed length cutting and cap bag are installed: the longitudinal rib of fixed length cutting Len req, again cap bag is installed in the two ends of described longitudinal rib respectively, and described cap bag longitudinally has through hole, and external surface has screw thread;
(3) make the skeleton cage: horizontal bar is connected forms the reinforcing cage that the cross section is polygon or circle on the whole on the described longitudinal rib;
(4) concrete distributing: install baffle and stretch-draw plate at the two ends of described reinforcing cage, described baffle and described reinforcing cage are fixed, integral body is put into mould then, and the outside of described baffle is enclosed with and only starches glue or rope, concrete is directly put into the punching block of reinforcing cage;
(5) prestressed stretch-draw: crab-bolt is provided, described crab-bolt comprises head and bar portion, described bar portion is the sleeve-shaped of hollow, described sleeve lining is provided with the internal thread that the screw thread with described cap bag external surface assembles, described stretch-draw plate is provided with the anchor hole of passing for described anchor bolt stem, is threaded with cap bag after the bar portion of crab-bolt being passed the anchor hole of stretch-draw plate; Again the stretch-draw plate is linked to each other with the stretch-draw machine, utilize the stretch-draw machine that described longitudinal rib is carried out prestressed stretch-draw;
(6) centrifugal: as whole punching block to be hung in carry out centrifugally in the centrifuge, after the centrifugal end centrifugal surplus slurry and the moisture content that comes out is toppled over totally;
(7) maintenance: mould is put into the maintenance pond carry out stream curing; Carry out perhaps that water is supported, air-dry maintenance; Carry out again getting final product after the demoulding finished product.
17. manufacture method as claimed in claim 16 is characterized in that, described longitudinal rib is prestressed reinforcement, and handle through pier nose the end of described prestressed reinforcement, and the pier nose of described prestressed reinforcement is stuck on the cap bag or is contained in the counter sink of cap bag.
18. manufacture method as claimed in claim 16, it is characterized in that, described longitudinal rib is the fibre-reinforced plastics muscle, described fibre-reinforced plastics muscle surface has screw thread, the inner surface of described cap bag also arranges screw thread, the screw thread on the screw thread of described cap bag inner surface and described fibre-reinforced plastics muscle surface is a pair of assembling screw thread, by the screw thread of described cap bag inner surface and the screw thread on described fibre-reinforced plastics muscle surface described cap bag and described fibre-reinforced plastics muscle is linked together.
19. manufacture method as claimed in claim 16 is characterized in that, described baffle periphery is provided with only stock tank, and the described degree of depth of ending stock tank is 2-20mm.
20. manufacture method as claimed in claim 16 is characterized in that, in the step of described making skeleton cage, vertically also is provided with nonprestressed reinforcement along described skeleton cage.
21. manufacture method as claimed in claim 16 is characterized in that, described concrete distributing and prestressed stretch-draw step are carried out simultaneously.
22. manufacture method as claimed in claim 16 is characterized in that, in described centrifugation step, described punching block rotating speed control is changeed 50～550, and the time was controlled at 5～20 minutes.
23. manufacture method as claimed in claim 16, it is characterized in that, in described maintenance pond, carry out in the steam-cured step, mould put into the maintenance pond is quiet stopped 5～240 minutes, feed steam then, be raised to high temperature gradually by low temperature, temperature control is at 50～105 degree, time is 4～8 hours, and speed was controlled in 10～30 degree/half an hour.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103556624A (en) * | 2013-11-01 | 2014-02-05 | 建华建材（中国）投资有限公司 | Connecting sleeve, prefabricated part comprising same as well as production method and connecting method thereof |
| CN104278668A (en) * | 2014-10-20 | 2015-01-14 | 顾孙平 | Embedded iron member and anchor bar connecting structure |
| CN104895050A (en) * | 2015-06-09 | 2015-09-09 | 周兆弟 | Tension nut sunken type prefabricated pile |
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| CN103556624A (en) * | 2013-11-01 | 2014-02-05 | 建华建材（中国）投资有限公司 | Connecting sleeve, prefabricated part comprising same as well as production method and connecting method thereof |
| CN103556624B (en) * | 2013-11-01 | 2016-02-24 | 建华建材（中国）投资有限公司 | Adapter sleeve, to produce and method of attachment containing the prefabricated units of this adapter sleeve and prefabricated units |
| CN104278668A (en) * | 2014-10-20 | 2015-01-14 | 顾孙平 | Embedded iron member and anchor bar connecting structure |
| CN104278668B (en) * | 2014-10-20 | 2016-04-13 | 顾孙平 | The syndeton of a kind of embedded iron parts and dowel |
| CN104895050A (en) * | 2015-06-09 | 2015-09-09 | 周兆弟 | Tension nut sunken type prefabricated pile |
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| CN103266595B (en) | 2016-02-24 |
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