CN203821376U - Pre-tensioning method centrifugal concrete pile with steel strands - Google Patents
Pre-tensioning method centrifugal concrete pile with steel strands Download PDFInfo
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- CN203821376U CN203821376U CN201420046822.9U CN201420046822U CN203821376U CN 203821376 U CN203821376 U CN 203821376U CN 201420046822 U CN201420046822 U CN 201420046822U CN 203821376 U CN203821376 U CN 203821376U
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- 230000007704 transition Effects 0.000 claims description 34
- 210000003205 muscle Anatomy 0.000 claims description 28
- 230000003014 reinforcing effect Effects 0.000 claims description 14
- 238000005267 amalgamation Methods 0.000 claims description 6
- 230000002787 reinforcement Effects 0.000 abstract description 4
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- 238000000429 assembly Methods 0.000 abstract 4
- 230000000694 effects Effects 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 15
- 229910000754 Wrought iron Inorganic materials 0.000 description 14
- 238000004080 punching Methods 0.000 description 9
- 238000005452 bending Methods 0.000 description 8
- 238000013461 design Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
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- 230000006378 damage Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 239000011513 prestressed concrete Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
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- 238000003466 welding Methods 0.000 description 2
- 235000001674 Agaricus brunnescens Nutrition 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
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- 239000011229 interlayer Substances 0.000 description 1
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- 230000010412 perfusion Effects 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 210000004872 soft tissue Anatomy 0.000 description 1
- GOLXNESZZPUPJE-UHFFFAOYSA-N spiromesifen Chemical compound CC1=CC(C)=CC(C)=C1C(C(O1)=O)=C(OC(=O)CC(C)(C)C)C11CCCC1 GOLXNESZZPUPJE-UHFFFAOYSA-N 0.000 description 1
Abstract
The utility model relates to a pre-tensioning method centrifugal concrete pile with steel strands. The pre-tensioning method centrifugal concrete pile comprises a concrete pile body and a steel reinforcement cage which comprises pre-stressed main reinforcements, stirrups and at least one end plate. The pre-tensioning method centrifugal concrete pile is characterized in that the pre-stressed main reinforcements are the steel strands; the end plate is provided with a plurality of taper holes, wherein the hole diameters of the taper holes are gradually increased from inside to outside; the taper holes and the steel strands are formed in a one-to-one correspondence mode; a plurality of clamping pieces are placed in every taper hole; the inner surface of every clamping piece is provided with clamping teeth; the plurality of clamping pieces are pieced to form clamping head assemblies which are used for clamping the steel strands; taper surfaces which are matched with the taper holes are formed on the peripheral surfaces of the clamping head assemblies respectively; inner tooth holes are formed in the centers of the clamping head assemblies respectively; the steel strands penetrate the inner tooth holes formed in the corresponding clamping head assemblies to be locked through the inner tooth holes respectively. According to the pre-tensioning method centrifugal concrete pile with the steel strands, the practical effect is achieved, connection and locking of the steel strands are simple and reasonable, convenient to operate and low in cost, and accordingly the steel strands can be applied to the centrifugal concrete pile and the actual value of the industrial application is achieved.
Description
Technical field
The utility model belongs to the technical field of the pile foundation engineering of all kinds of architectural structure systems, relates in particular to a kind of pre-tensioning system centrifugal concrete pile with steel strand.
Background technology
All kinds of building structure generally all relates to pile foundation engineering, on existing market, apply to the product that pile foundation comparison between projects is many and have bored pile, prestressed centrifugally concrete tubular pile (comprising pile tube, square pile), but under the current level of economic development and Building technology condition, architectural design field has entered new developing stage, the requirement of pile foundation is also being improved constantly, the technical performance of existing product cannot meet the needs of fast-developing construction market, and highlights many serious technological deficiencies.
The development of prestressed centrifugally concrete pile, production start from the sixties in last century, during beginning, the main muscle of centrifugal concrete pile prestressing force mainly adopts high tensile steel wire, but high tensile steel wire is because diameter is little and circumference is light face, the defect of existence and grip of concrete deficiency, all technical cannot meet building needs.To the eighties in last century, prestressed centrifugally concrete pile starts to adopt steel bar for prestressed concrete as main muscle, because it is prefabrication, production efficiency is high, main rigidity of soft tissues degree is relatively high, the advantages such as concrete strength is high, it is convenient to construct, the cycle is very fast and be building field a large amount of, extensively adopt and continuity is always used so far dominate in conventional piles Foundation Design at present.But in production and application process, main muscle adopts the centrifugal concrete pile of rod iron to have more problem, and as larger in rod iron fragility, its tensile strength is low, and (its tensile strength design load is 1000MPa, tensile strength peak is 1420MPa), cannot meet current Building technology requirement; In production for the ease of stretching, must adopt the technology of rod iron heading, the hot upsetting of rod iron is gone out to a mushroom head, so that this heading and pile body end plate, stretch board are blocked and carry out prestressed stretch-draw, but can to cause the intensity at pier nose position to be undermined material impaired due to the heading of hot this rod iron of upsetting; , because rod iron pier nose precision is inconsistent, during stretch-draw, cannot fully contact with end plate meanwhile, cause end plate local failure; Rod iron, because cutting accuracy is controlled not, causes rod iron length to differ, and there will be Stress non-homogeneity, the phenomenon of even breaking in stretching process; In addition, reinforcing cage is welding fabrication, and rod iron causes Material damage because high temperature freezes.Above-mentioned many disadvantages, causes existing main muscle to adopt the technical performances such as the bending resistance of the centrifugal concrete pile of steel bar for prestressed concrete, shearing resistance obviously not enough.In engineering application, because earthquake, typhoon and other uncertain factors can cause top, buildings pile basis, produce larger moment of flexure and horizontal force, road and bridge or railway bridge also can produce because of the dynamic load of haulage vehicle larger moment of flexure and horizontal force.When above-mentioned traditional centrifugal concrete pile is used for above-mentioned engineering, often because bending resistance and shear behavior are not enough, cannot use, what in highrise building, show is especially serious.In addition,, in the engineerings such as bracing of foundation pit, slope retaining, common centrifugal concrete pile is same because bending resistance and shear behavior deficiency cannot scale application.For security consideration, a lot of recent years of China have started to forbid to use centrifugal concrete pile in some pile foundation engineering.
Bored pile is widely used in the pile body in building pile foundation Foundation Design field as another kind, its making is that cast in situs completes, its production process is first in building site, to drill through a stake hole, then reinforcing cage is put into a hole, to concrete perfusion in hole, rear natural curing to be formed can be used after reaching for a long time some strength again.This pile body has stronger vitality because it has high bearing capacity and can adapt to complicated geological, but the mud that this castinplace pile is taken out outside man-hour requirement processing is executed in making, and environment pollution is quite serious, less employing in external urban construction; Easy hole wall collapse, broken pile interlayer in bored pile piling process, as solution cavity or cavity, more will cause a large amount of concrete wastes in addition; And its construction costs is higher, larger on building costs impact; Because it is that cast in situs completes and needs long-time natural curing, can not realize batch production and produce, thereby efficiency is low, long in time limit.
Because the tensile strength of steel strand is high, (its tensile strength design load is 1320MPa, tensile strength reaches as high as 1960MPa), in recent years, China enterprise and scientific research institution are also applied to centrifugal concrete pile to steel strand and have carried out large quantity research, but do not have so far the technical scheme of practical value.A kind of reinforcing cage the pipe pile reinforcing bar cage > > that is furnished with steel strand as a patent No. be ZL201220538453.6 (notification number is CN202865836U) mono-kind of Chinese utility model patent < < has disclosed, its steel strand and prestressed steel bar are used in conjunction with, because rod iron and steel strand exist tensile strength poor, while applying integrated prestress at the same time, can only control stretch-draw with the low tensile strength of rod iron, the high-tensile performance performance of steel strand is not out, therefore in this patent, steel strand are equal to rod iron role, and the due high-tensile performance of unrealized steel strand, as using the tensile strength of steel strand as control criterion, at the same time during integral tension, rod iron will be broken destruction.In addition, how concrete this patent do not disclose in pre-tensioning system centrifugal concrete pile connection, fixing, tension steel strand, so this patented technology does not substantially have real practical value and operability in pile foundation engineering.
And for example an application number is that the Chinese invention patent application < < pre-tensioning system steel strand prestress concrete tubular pile > > of CN200510050212.1 (notification number is CN1687534A) has disclosed a kind of like this concrete tubular pile with steel strand, the main muscle of its prestressing force adopts steel strand, on end plate, have stretchable holes, steel strand are made ground tackle through stretchable holes.How this patent application does not disclose in pre-tensioning system centrifugal concrete pile being connected and anchoring and concrete production method thereof of specific implementation steel strand and end plate yet, and for the field of those of ordinary skill manufacture to(for) concrete pile, because professional span is large, generally also has no way of finding out about it and how steel strand are applied in the production of pre-tensioning system centrifugal concrete pile; In addition, according to the accompanying drawing of the technical scheme of its description and this patent application, show, pile body end face after its moulding has outstanding ground tackle, pile extension can not be realized, this outstanding ground tackle is easily broken in construction piling process, thereby pile body prestressing force is destroyed and the technical performances such as its bending resistance, shearing resistance that detract.So, by the technical scheme of its disclosure, cannot produce, even if produced also and cannot be practically applicable to pile foundation engineering at all, this patent has only proposed steel strand to apply to the recapitulative technical though of pre-tensioning system centrifugal concrete pile theoretically, but cannot be applied in reality production and construction.
As seen from the above, a large amount of main muscle that use are rod iron in the market prestressed centrifugally concrete pile and bored pile all can not meet the needs of current pile foundation engineering, and adopt steel strand, as the pre-tensioning system centrifugal concrete pile of main muscle, be only also a kind of technical though at present, because steel strand system is by many stranded the forming of steel wire, be difficult for welding, be difficult for being wound around, itself be difficult for realization and end plate or stretch board, the firm of anchor plate fixed, therefore how steel strand are connected in pre-tensioning system centrifugal concrete pile, fixing and how steel strand being carried out to stretch-draw is to realize the key of manufacturing the pre-tensioning system centrifugal concrete pile with steel strand, even to this day, there is no the appearance with the centrifugal concrete pile that main muscle that building practical is worth is steel strand both at home and abroad.
Utility model content
Technical problem to be solved in the utility model is a kind of pre-tensioning system centrifugal concrete pile with steel strand providing for above-mentioned the deficiencies in the prior art, it overcomes the be connected and fixed problem of steel strand in pre-tensioning system centrifugal concrete pile, make the main muscle of centrifugal concrete pile inside adopt steel strand to become and may and there is application value realistic, significantly improve the technical performances such as bending resistance, shearing resistance, tension of centrifugal concrete pile.
The utility model solves the problems of the technologies described above adopted technical scheme: a kind of pre-tensioning system centrifugal concrete pile with steel strand, the concrete pile body that comprises hollow, be positioned at the reinforcing cage of concrete pile body, reinforcing cage comprises the main muscle of axial arranged prestressing force, stirrup outside described main muscle and be positioned at the end plate of pile body end around the home, it is characterized in that: the main muscle of described prestressing force is steel strand, at least one end plate adopts the first clip type structure to be connected with steel strand, on this piece end plate, have the bellmouth that several apertures from the inside to the outside expand gradually, bellmouth and steel strand corresponding setting one by one, in each bellmouth, be placed with multi-disc intermediate plate, the inner surface of each intermediate plate is provided with latch, this multi-disc intermediate plate amalgamation forms the chuck component in order to clip steel strand, the outer peripheral face of chuck component forms the cone face matching with described cone hole, in chuck component, be formed centrally internal tooth hole, each steel strand are all through the interior perforation in corresponding chuck component and locked by interior perforation, the outer face of chuck component flushes with the outer face of described end plate or is lower slightly.
A kind of pre-tensioning system centrifugal concrete pile with steel strand, the concrete pile body that comprises hollow, be positioned at the reinforcing cage of concrete pile body, reinforcing cage comprises the main muscle of axial arranged prestressing force, stirrup outside described main muscle and be positioned at the end plate of pile body end around the home, it is characterized in that: the main muscle of described prestressing force is steel strand, at least one end plate adopts the second clip type structure to be connected with steel strand, on this piece end plate, have several counterbores, in each counterbore, be placed with the transition member that profile and counterbore match, the front end of transition member has the ring-type shoulder block portion in the macropore portion that is sunken to described counterbore, in transition member, there is the transition bellmouth that aperture expands gradually from the inside to the outside, transition bellmouth and steel strand corresponding setting one by one, in each transition bellmouth, be placed with multi-disc intermediate plate, the inner surface of each intermediate plate is provided with latch, this multi-disc intermediate plate amalgamation forms the chuck component in order to clip steel strand, the outer peripheral face of this chuck component forms the cone face matching with described transition bellmouth, in chuck component, be formed centrally internal tooth hole, described each steel strand are all through the interior perforation in corresponding chuck component and locked by interior perforation, the outer face of chuck component flushes with the outer face of described end plate or is lower slightly.Itself and upper a kind of pre-tensioning system centrifugal concrete pile difference are, it arranges transition member in end plate, and bellmouth is set in transition member, due to the processing of counterbore, to compare bellmouth more convenient, and process bellmouth in transition member, compare and on end cap, process bellmouth and more easily realize, the material that simultaneously we also can allow transition member adopt properties to be better than end plate is made, and allows steel strand and end plate relative fix more firm.
The periphery of the above-mentioned chuck component being comprised of multi-disc intermediate plate is provided with cannelure, in this cannelure, is placed with the cranse in multi-disc intermediate plate hoop jail.Cranse can be wire loop or rubber ring, cranse is set and can makes the chuck component of multi-disc intermediate plate composition more firm.
Above-mentioned each chuck component is comprised of three described intermediate plates.Through evidence, it is better that each chuck component forms its indices by three intermediate plates, and the location of steel strand and bellmouth is the most firm.
On above-mentioned end plate, also have a plurality of threaded connection holes in order to be connected with anchor plate or stretch board.
Above-mentioned two end plates all adopts described the first clip type structure to be connected with steel strand or the second clip type structure connects, and the two ends of steel strand all can be connected with end plate is firm by clip type structure like this; Can certainly be to only have an end plate and steel strand to adopt clip type structure to be connected, the other end of concrete pile body can not have end plate, and in production, the steel strand of this other end can adopt alternate manner to connect, fix to realize and produce.
Compared with prior art, the advantage of this pre-tensioning system centrifugal concrete pile is: main muscle all adopts steel strand, makes the tensile strength of winner's muscle consistent, and pile body overall performance increases, the chuck component that steel strand consist of intermediate plate and the bellmouth in end plate are realized fixing, the mode that adopts integral tension mode to combine with the pre-stretch-draw of single steel strand, when pre-stretch-draw, available punching jack withstands the outer face of chuck component, and allow steel strand pass interior perforation, externally the traction element by punching jack carries out stretch-draw to steel strand, after unloading punching jack, steel strand loosen retraction, the retraction of steel strand drives chuck component towards the small-bore direction retraction of bellmouth, chuck component and bellmouth firmly to be fixed, and make the further banding of interior perforation in chuck component stuck steel strand, then pull screw rod to carry out integral tension, move specified value locking nut to, carry out centrifugal forming, after completing, moulding unloads anchor plate, stretch board, steel strand are put and opened, last severing exposes outside the steel strand of end plate and polishes, the centrifugal concrete pile that manufacture completes does not protrude the ground tackle portion of end plate, it is a kind of practicable centrifugal concrete pile with steel strand, and the connection of steel strand in this centrifugal concrete pile, locking mode advantages of simple, easy to operate and cost is low, make steel strand apply to the real value that centrifugal concrete pile was achieved and had industrial applicability, centrifugal concrete pile of the present invention, because having adopted the high steel strand of performance, improves its bending resistance, shearing resistance, tensile property greatly.
Accompanying drawing explanation
Fig. 1 is the structural representation of first embodiment of the utility model;
Fig. 2 is the A place enlarged drawing of Fig. 1;
Fig. 3 is that the B-B of Fig. 1 is to sectional view;
Fig. 4 is the lateral view of first embodiment of the utility model;
Fig. 5 is the perspective view of chuck component in two embodiment of the utility model;
Fig. 6 is the three-dimensional exploded view of chuck component in two embodiment of the utility model;
Fig. 7 is the structural representation of second embodiment of the utility model;
Fig. 8 is the C place enlarged drawing of Fig. 7;
Fig. 9 is that the D-D of Fig. 7 is to sectional view;
Figure 10 is the lateral view of second embodiment of the utility model.
The specific embodiment
Below in conjunction with accompanying drawing, embodiment is described in further detail the utility model.
As shown in Fig. 1～6, be first embodiment of the present utility model.
A kind of pre-tensioning system centrifugal concrete pile with steel strand, comprise hollow concrete pile body 1, be positioned at the reinforcing cage of concrete pile body 1, concrete pile body 1 can be circular stake, also can be barrette, polygonal pile and various pretensioned prestressing centrifugal concrete shaped pile.Reinforcing cage comprises the main muscle of axial arranged prestressing force, the stirrup 4 outside described main muscle and be positioned at the end plate 2 at two ends around the home, the main muscle of prestressing force is steel strand 3, fixing between stirrup 4 and steel strand 3 can adopt manual colligation, also can adopt automatic binding machine colligation or other mechanical systems to fix, concrete pile body 1 can also axial arrangedly have nonprestressed reinforcement, anchor rib and pile protection hoop, its conventional design that is centrifugal concrete pile.
Two end plates 2 adopts the first clip type structure to be connected with steel strand 3, on each piece end plate 2, have the bellmouth 21 that several apertures from the inside to the outside expand gradually, bellmouth 21 and steel strand 3 corresponding setting one by one, in each bellmouth 21, be placed with multi-disc intermediate plate 5, the inner surface of each intermediate plate 5 is provided with latch 51, these multi-disc intermediate plate 5 amalgamations form the chuck component 6 in order to clip steel strand 3, and in the present embodiment, each chuck component 6 is comprised of three described intermediate plates 5.The periphery of the chuck component 6 being comprised of multi-disc intermediate plate 5 is provided with cannelure 63, is placed with the firm cranse 64 of multi-disc intermediate plate 5 hoop in this cannelure 63, and cranse 64 can be wire loop or rubber ring.
The outer peripheral face of this chuck component 6 forms the cone face 61 matching with described bellmouth 21, in chuck component 6, be formed centrally internal tooth hole 62, each steel strand 3 are all through the interior perforation 62 in corresponding chuck component and by interior perforation 62 lockings, and the outer face of chuck component 6 flushes with the outer face of described end plate 2 or be lower slightly.
Steel strand 3 are as follows by the process of interior perforation 62 lockings: after steel strand 3 being carried out to stretch-draw and loosen, the retraction of steel strand 3 drives chuck component 6 towards the small-bore direction retraction of bellmouth 21, chuck component 6 and bellmouth 21 firmly to be fixed, and makes the further banding of interior perforation 62 the stuck steel strand 3 in chuck component.
On end plate 2, also have a plurality of threaded connection holes 22 in order to be connected with anchor plate.
Main muscle all adopts steel strand 3, the chuck component 6 that steel strand 3 consist of intermediate plate 5 is realized fixing with the bellmouth 21 in end plate 2, while adopting integral tension, by hydraulic jack, withstand gripper shoe, then by screw rod, pull stretch board, while moving the numerical value of regulation to, locking nut, this is the stretching mode of centrifugal pile routine, when adopt integral tension to combine with the pre-stretch-draw of single steel strand mode time, during to the pre-stretch-draw of single steel strand, available punching jack withstands the outer face of chuck component 6, and allow steel strand 3 through interior perforation 62, externally the traction element by punching jack carries out stretch-draw to steel strand 3, after unloading punching jack, steel strand 3 loosen retraction, the retraction of steel strand 3 drives chuck component 6 towards the small-bore direction retraction of bellmouth 21, chuck component 6 and bellmouth 21 firmly to be fixed, and make the further banding of interior perforation 62 in chuck component 6 stuck steel strand 3, then carry out integral tension, and then carry out centrifugal forming, after completing, moulding unloads anchor plate, stretch board, steel strand 3 are put and opened, last severing exposes outside the steel strand 3 of end plate 2 and polishes, the centrifugal concrete pile that manufacture completes does not protrude the ground tackle portion of end plate, it is a kind of practicable centrifugal concrete pile with steel strand, and the connection of steel strand in this centrifugal concrete pile, locking mode advantages of simple, easy to operate and cost is low, make steel strand apply to the real value that centrifugal concrete pile was achieved and had industrial applicability, centrifugal concrete pile of the present invention, because having adopted the high steel strand of performance, improves its bending resistance, shearing resistance, tensile property greatly.
As shown in Fig. 5～10, be second embodiment of the present utility model.
The difference of the present embodiment and first embodiment is: two end plates 2 adopts the second clip type structure to be connected with steel strand 3, on each piece end plate 2, have several counterbores 23, in each counterbore 23, be placed with the transition member 7 that profile and counterbore 23 match, the front end of transition member 7 has the ring-type shoulder block portion 71 in the macropore portion that is sunken to counterbore 23, in transition member 7, there is the transition bellmouth 72 that aperture expands gradually from the inside to the outside, transition bellmouth 72 and steel strand 3 corresponding setting one by one, in each transition bellmouth 72, be placed with multi-disc intermediate plate 5, the inner surface of each intermediate plate 5 is provided with latch 51, these multi-disc intermediate plate 5 amalgamations form chuck component 6, the outer peripheral face of this chuck component 6 forms the cone face 61 matching with described transition bellmouth 72, in chuck component 6, be formed centrally internal tooth hole 62, each steel strand 3 are all through the interior perforation 62 in corresponding chuck component and by interior perforation 62 lockings, the outer face of chuck component 6 flushes with the outer face of described end plate 2 or is lower slightly.
Steel strand 3 are as follows by the process of interior perforation 62 lockings: after steel strand 3 being carried out to stretch-draw and loosen, the retraction of steel strand 3 drives chuck component 6 towards the small-bore direction retraction of transition bellmouth 72, chuck component 6 and transition bellmouth 72 firmly to be fixed, and the further banding of interior perforation 62 in chuck component stuck steel strand 3, the retraction of steel strand 3 are also driven simultaneously move the ring-type shoulder block portion 71 making in transition member 7 after transition member 7 to combine closely with the macropore portion bottom surface of counterbore 23.
Main muscle all adopts steel strand 3, the chuck component 6 that steel strand 3 consist of intermediate plate 5 is realized fixing with the transition bellmouth 72 in end plate 2, while adopting integral tension, by hydraulic jack, withstand gripper shoe, then by screw rod, pull stretch board, while moving the numerical value of regulation to, locking nut, this is the stretching mode of centrifugal pile routine, when adopt integral tension to combine with the pre-stretch-draw of single steel strand mode time, during to the pre-stretch-draw of single steel strand, available punching jack withstands the outer face of chuck component 6, and allow steel strand 3 through interior perforation 62, externally the traction element by punching jack carries out stretch-draw to steel strand 3, after unloading punching jack, steel strand 3 loosen retraction, the retraction of steel strand 3 drives chuck component 6 towards the small-bore direction retraction of transition bellmouth 72, chuck component 6 and transition bellmouth 72 firmly to be fixed, and make the further banding of interior perforation 62 in chuck component stuck steel strand 3, the retraction of steel strand 3 also drives simultaneously and moves the ring-type shoulder block portion 71 making in transition member 7 after transition member 7 and combine closely with the macropore portion bottom surface of counterbore 23, then carry out integral tension, carry out centrifugal forming, after completing, moulding unloads anchor plate, stretch board, steel strand 3 are put and opened, last severing exposes outside the steel strand 3 of end plate 2 and polishes, the centrifugal concrete pile that manufacture completes does not protrude the ground tackle portion of end plate, it is a kind of practicable centrifugal concrete pile with steel strand, and the connection of steel strand in this centrifugal concrete pile, locking mode advantages of simple, easy to operate and cost is low, make steel strand apply to the real value that centrifugal concrete pile was achieved and had industrial applicability, centrifugal concrete pile of the present invention, because having adopted the high steel strand of performance, improves its bending resistance, shearing resistance, tensile property greatly.
The body of rod that the centrifugal concrete pile with steel strand that the utility model is mentioned can be used as electric pole uses, and the ground upper support bar also can be used as in telecomm base station, wind generator system is used, and also can be used as the supporter of other ground surface works, and utilization scope is extremely wide.
Claims (10)
1. a pre-tensioning system centrifugal concrete pile with steel strand, the concrete pile body (1) that comprises hollow, be positioned at the reinforcing cage of concrete pile body (1), reinforcing cage comprises the main muscle of axial arranged prestressing force, stirrup (4) outside described main muscle and be positioned at the end plate (2) of concrete pile body (1) end around the home, it is characterized in that: the main muscle of described prestressing force is steel strand (3), at least one end plate (2) adopts the first clip type structure to be connected with steel strand (3), on this piece end plate (2), have the bellmouth (21) that several apertures from the inside to the outside expand gradually, bellmouth (21) and steel strand (3) corresponding setting one by one, in each bellmouth (21), be placed with multi-disc intermediate plate (5), the inner surface of each intermediate plate (5) is provided with latch (51), this multi-disc intermediate plate (5) amalgamation forms the chuck component (6) in order to clip steel strand (3), the outer peripheral face of this chuck component (6) forms the cone face (61) matching with described bellmouth (21), in chuck component (6), be formed centrally internal tooth hole (62), described each steel strand (3) are all locked through the interior perforation (62) in corresponding chuck component and by interior perforation (62), the outer face of chuck component (6) flushes with the outer face of described end plate (2) or is lower slightly.
2. the pre-tensioning system centrifugal concrete pile with steel strand according to claim 1, it is characterized in that: the periphery of the described chuck component (6) being comprised of multi-disc intermediate plate (5) is provided with cannelure (63), in this cannelure (63), is placed with multi-disc intermediate plate (5) is bound round to firm cranse (64).
3. the pre-tensioning system centrifugal concrete pile with steel strand according to claim 1, is characterized in that: described each chuck component (6) is comprised of three described intermediate plates (5).
4. the pre-tensioning system centrifugal concrete pile with steel strand according to claim 1, is characterized in that: on described end plate (2), also have a plurality of threaded connection holes (22) in order to be connected with anchor plate or stretch board.
5. the pre-tensioning system centrifugal concrete pile with steel strand according to claim 1, is characterized in that: described two end plates (2) all adopts described the first clip type structure to be connected with steel strand (3).
6. a pre-tensioning system centrifugal concrete pile with steel strand, the concrete pile body (1) that comprises hollow, be positioned at the reinforcing cage of concrete pile body (1), reinforcing cage comprises the main muscle of axial arranged prestressing force, stirrup (4) outside described main muscle and be positioned at the end plate (2) of concrete pile body (1) end around the home, it is characterized in that: the main muscle of described prestressing force is steel strand (3), at least one end plate (2) adopts the second clip type structure to be connected with steel strand (3), on this piece end plate (2), have several counterbores (23), in each counterbore (23), be placed with the transition member (7) that profile and counterbore (23) match, the front end of transition member (7) has the ring-type shoulder block portion (71) in the macropore portion that is sunken to described counterbore (23), in transition member (7), there is the transition bellmouth (72) that aperture expands gradually from the inside to the outside, transition bellmouth (72) and steel strand (3) corresponding setting one by one, in each transition bellmouth (72), be placed with multi-disc intermediate plate (5), the inner surface of each intermediate plate (5) is provided with latch (51), this multi-disc intermediate plate (5) amalgamation forms the chuck component (6) in order to clip steel strand (3), the outer peripheral face of this chuck component (6) forms the cone face (61) matching with described transition bellmouth (72), in chuck component (6), be formed centrally internal tooth hole (62), described each steel strand (3) are all locked through the interior perforation (62) in corresponding chuck component and by interior perforation (62), the outer face of chuck component (6) flushes with the outer face of described end plate (2) or is lower slightly.
7. the pre-tensioning system centrifugal concrete pile with steel strand according to claim 6, it is characterized in that: the periphery of the described chuck component (6) being comprised of multi-disc intermediate plate (5) is provided with cannelure (63), in this cannelure (63), is placed with multi-disc intermediate plate (5) is bound round to firm cranse (64).
8. the pre-tensioning system centrifugal concrete pile with steel strand according to claim 6, is characterized in that: described each chuck component (6) is comprised of three described intermediate plates (5).
9. the pre-tensioning system centrifugal concrete pile with steel strand according to claim 6, is characterized in that: on described end plate (2), also have a plurality of threaded connection holes (22) in order to be connected with anchor plate or stretch board.
10. the pre-tensioning system centrifugal concrete pile with steel strand according to claim 6, is characterized in that: described two end plates (2) all adopts described the second clip type structure to be connected with steel strand (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420046822.9U CN203821376U (en) | 2014-01-24 | 2014-01-24 | Pre-tensioning method centrifugal concrete pile with steel strands |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420046822.9U CN203821376U (en) | 2014-01-24 | 2014-01-24 | Pre-tensioning method centrifugal concrete pile with steel strands |
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| CN203821376U true CN203821376U (en) | 2014-09-10 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103741672A (en) * | 2014-01-24 | 2014-04-23 | 俞向阳 | Pretensioned centrifugal concrete pile with steel stranded wires and manufacturing method |
| CN108149847A (en) * | 2018-02-06 | 2018-06-12 | 俞晓东 | For the steel strand wires locking device of concrete prefabricated element |
-
2014
- 2014-01-24 CN CN201420046822.9U patent/CN203821376U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103741672A (en) * | 2014-01-24 | 2014-04-23 | 俞向阳 | Pretensioned centrifugal concrete pile with steel stranded wires and manufacturing method |
| WO2015109930A1 (en) * | 2014-01-24 | 2015-07-30 | 俞向阳 | Pre-tensioned centrifugal concrete pile provided with steel strand and manufacturing method |
| CN103741672B (en) * | 2014-01-24 | 2016-01-13 | 俞向阳 | A kind of pre-tensioning system centrifugal concrete pile and manufacture method with steel strand |
| CN108149847A (en) * | 2018-02-06 | 2018-06-12 | 俞晓东 | For the steel strand wires locking device of concrete prefabricated element |
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