CN204645030U - End plate, pile extension mechanism, for the bindiny mechanism of tension reinforcing steel bar cage and concrete pile - Google Patents
End plate, pile extension mechanism, for the bindiny mechanism of tension reinforcing steel bar cage and concrete pile Download PDFInfo
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- CN204645030U CN204645030U CN201520227377.0U CN201520227377U CN204645030U CN 204645030 U CN204645030 U CN 204645030U CN 201520227377 U CN201520227377 U CN 201520227377U CN 204645030 U CN204645030 U CN 204645030U
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Abstract
The utility model relate to a kind of end plate, pile extension mechanism, for the bindiny mechanism of tension reinforcing steel bar cage and concrete pile, its end plates is in order to be arranged on the end that the main muscle of prestressing force is the concrete pile of steel strand, comprise and there is ringwise end plate body, end plate body has front end face, rear end face, internal perisporium and periphery wall, end plate body is provided with multiple lockhole in order to be locked by steel strand in it, it is characterized in that: the periphery wall of end plate body is provided with the caulking groove of U-shaped profile.Because the end plate thickness adopting steel strand to adopt as the concrete pile of the main muscle of prestressing force is thicker than traditional end plate thickness, this just provides possibility to processing caulking groove at the outer peripheral face of this end plate body, and adjacent both ends plate is joined together to form firm pile extension by the clip parts being placed through employing U-shaped profile of caulking groove provides possibility; Also provide possibility for adopting U-shaped profile connecting hoop parts to carry out stretch-draw to the reinforcing cage with aforementioned end plate simultaneously.
Description
Technical field
The utility model belongs to the technical field of the pile foundation engineering of all kinds of architectural structure system, particularly relate to a kind of end plate for pretensioning prestressed concrete pile, the pile extension mechanism of concrete pile, for the production method of the bindiny mechanism of stretch-draw concrete pile reinforcing cage, concrete pile and concrete pile, wherein concrete pile is pretensioning prestressed concrete pile.
Background technology
The pile body two ends of concrete pile are generally all provided with end plate, pile tube, square pile, T-shaped stake, I-shaped stake etc. can be divided into according to the difference of the pile body cross section of concrete pile, end plate is mainly used in pile extension, presstressed reinforcing steel be carried out to anchoring and in order to carry out stretch-draw to the main muscle of the prestressing force of reinforcing cage in the process manufacturing concrete pile.The pile extension mode of existing concrete stake adopts manual welding end plate to realize mostly, during pile extension, is fitted by the end plate of adjacent two concrete piles, then is welded together by end plate bonded to each other by welding.The maximum advantage of welding manner pile extension is that cost is lower, but manual welding is subject to the impact of human factor and weather, welding quality is stable not, there is potential safety hazard in pile extension position, after stake is welded with stake in addition, need nature to cool and can continue pile sinking in 8 ~ 10 minutes, the waste plenty of time, the efficiency of impact construction.
There is human hair to understand for this reason and adopt the sealed mode of machinery to carry out pile extension, a kind ofly as disclosed in the patent No. Chinese utility model patent " preformed pile connecting structure " that is ZL201120366033.X (notification number is CN202265824U) be mainly used in the pile splicing structure that traditional prestressed concrete pile and the main muscle of prestressing force are the concrete pile of rod iron, comprise and be socketed in the interior hoop that stake that two need stakes connect preformed pile connects periphery, position, be socketed and be fastened on the peripheral outer hoop of interior hoop, interior hoop is formed for being spliced into a circle by two and two or more arc part, the inner ring of interior hoop is provided with at least two radial protrusion rings, each stake needing stake to connect preformed pile connects periphery, position and is provided with the groove mated with radial protrusion ring.Because this preformed pile is the same with traditional presstressed reinforcing steel concrete pile, the main muscle of its prestressing force all adopts rod iron, end plate has multiple connecting hole in order to fixing rod iron pier nose, based on traditional prestressed concrete pile standard, the mandatory requirement of specification and cost-saving needs, its thickness of the end plate of this concrete pile is relatively thin, general between 18 ㎜ ~ 24 ㎜, therefore aforementioned grooves can not be directly arranged in end plate body periphery and can only cave in be embedded into pile extension position concrete pile body in, therefore namely the groove in aforementioned utility model patent is provided at the contact site of end plate and pile body: groove is embedded in the concrete of the part pile body contacted with end plate.This design causes pile extension position, is at least that the pile body concrete cover at groove position has disappearance, decrease pile extension position thickness of concrete cover, the durability of this position concrete pile structure and various mechanical property are had a negative impact, does not also meet prestressed concrete pile structure national regulation; In addition, groove is located in the concrete pile body at pile extension position, after pile extension when pile body is subject to the transverse shearing force from the external world is huge, insert interior hoop in groove and radial protrusion ring and directly the stressed concrete acting on pile body can will be easy to make the pile body concrete breakage cracking at pile extension position or groove position, the performance reducing pile body even makes pile extension position rupture, and causes potential safety hazard.Moreover the pile splicing structure of aforementioned utility model patent needs to be made up of interior hoop and the large parts of outer hoop two, pile extension cost is very high, and actual pile extension operation also very bothers.Therefore, there is major defect in the technical scheme that this patent discloses, does not have actual exploitativeness, also rare application in reality.
Somebody invents the mechanical pile splicing structure adopting buckplate, as the Chinese invention patent " a kind of square concave-convex trigger tool pile extension method for precast square pile " that an application number is CN201210418614.2 (publication number is CN103790156A), and one the patent No. be the Chinese invention patent " a kind of machinery of the circular buckplate for prefabricated tubular pile pile extension method " of CN201210419254.8 (publication number is CN103790157A), they disclose and be a kind ofly mainly used in the pile splicing structure that traditional prestressed concrete pile and the main muscle of prestressing force are the concrete pile of rod iron, namely adopt middle part with the end plate of flange and the middle part end plate with the groove of indent, and the two protuberance and recess are respectively equipped with the first groove and the second groove, when pile extension after two end plates splicing, first groove and the second groove type circularize docking groove, shearing-resistant member is inserted in docking groove, then row shutoff is filled in shearing resistance, to complete pile extension.The end plate with buckplate that this pile extension method adopts, it not only plays the connection rod iron effect of end plate, also play pile extension effect, this just makes the necessary size the same as the center hole in pile body of the center hole in buckplate, when pile extension position is cut, shearing is directly transferred to prestressed steel bar, due to buckplate structure and the same size of pile center's circular hole, therefore stress point is far away to prestressed steel bar, namely the arm of force is longer, therefore the shearing that prestressed steel bar is subject to is larger, has a negative impact to pilework, cause the shearing resistance effect of pile body poor.Meanwhile, when adopting the end plate of this structure to produce concrete pile, in tension reinforcing steel bar cage and remaining slurry treatment process, there is inconvenience and directly affect product quality and production efficiency.In addition, adopt the concrete pile of this structure end plate, can not the length of pile body be adjusted flexibly according to the needs of site construction and therefore can increase the cost of manufacturer.Application number is the Chinese invention patent " a kind of concrete pile linkage " of CN201310432325.2 (publication number is CN103541354), it also disclosed and be mainly used in the end plate with concaveconvex structure that the main muscle of traditional prestressing force is the concrete pile of rod iron, there is cloth muscle difficulty when prestressed reinforcement needs more, even a male and fomale(M&F) needs cloth a lot of prestressed reinforcements; When end plate cloth muscle with this concaveconvex structure, required reinforcing bar is different in size, and easily make mistakes when installing reinforcing bar, in production, during tension reinforcing steel bar cage, each reinforcing steel bar bear exists serious unbalanced problem, and operation controls difficulty, and pile extension latch is stressed larger.Meanwhile, adopting the pile body of this structure when driving piles, owing to there is male and fomale(M&F), causing pile driving stress to concentrate, easily causing and break pile crown phenomenon.In addition, can not the length of pile body be adjusted flexibly according to the needs of site construction and therefore can increase the cost of manufacturer.
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, Chinese Enterprises 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 the technical scheme of practical value so far.The applicant develops the multiple concrete pile with steel strand with application value realistic for this reason, and the main muscle of the prestressing force that in its concrete pile body, reinforcing cage is axial arranged all adopts steel strand.A kind of concrete pile with steel strand as disclosed in the application number Chinese invention patent " a kind of pre-tensioning system centrifugal concrete pile and manufacture method with steel strand " that is CN201410034851.8 (notification number is CN103741672A), the main muscle of the prestressing force that in this concrete pile, reinforcing cage is axial arranged is steel strand, pile body end plate has the bellmouth that several aperture from the inside to the outside expands gradually, bellmouth and steel strand one_to_one corresponding are arranged, be placed with in each bellmouth and form clip assemblies in order to clip steel strand by the split of multi-disc intermediate plate, the outer peripheral face of this clip assemblies forms the cone face matched with described bellmouth, internal tooth hole is formed centrally in clip assemblies, each steel strand are all locked by interior perforation through the interior perforation in corresponding clip assemblies.In order to more firmly lock steel strand, also in order to better mate clip assemblies or other specific locking components of locking steel strand, guarantee that the main muscle of prestressing force adopts the intensity of the concrete pile body of steel strand and every mechanical property, the main muscle of this prestressing force adopts compared with the end plate of concrete pile of steel strand adopts the end plate of the concrete pile of rod iron with the main muscle of traditional prestressing force, thickness has certain increase, has reserved space for doing more innovative designs on end plate.Because the main muscle of this prestressing force adopts the various mechanical properties of concrete pile body of steel strand extremely strong, be also badly in need of the better end plate member of performance that matches with it and pile extension mechanism, bindiny mechanism.
No matter adopt rod iron or steel strand as the concrete pile of the main muscle of prestressing force, it in the fabrication process, need to carry out prestressed stretch-draw to the reinforcing cage in pipe pile die, linkage in traditional stretching process and method of attachment be generally: be fixedly connected with anchor plate by bolt by the end plate of reinforcing cage one end, the end plate of the reinforcing cage other end is fixedly connected with stretch board by bolt, this reinforcing cage with stretch board and anchor plate is placed in pipe pile die, stretch board is arranged in the die cavity of pipe pile die, fit in the outer face of anchor plate and pipe pile die, stretch board has counterbore, the threaded shank of tensioning screw rod through after the counterbore on stretch board again through the perforation in the gripper shoe of fitting with pipe pile die opposite side end face, the head of tensioning screw rod is sunken in the macropore portion of the counterbore on stretch board, the thread rod part that locking nut is threaded in tensioning screw rod is positioned at outside gripper shoe, pull tensioning screw rod again and then pull stretch board, end plate and reinforcing cage, lock with locking nut after main for the prestressing force of reinforcing cage muscle is stretched to the numerical value of regulation.
Aforementioned tensioning equipment, need anchor plate and stretch board to be fixed by multiple bolt and end plate, this just must process screwed hole on end plate, and the operation of its fixing operation and dismounting is comparatively consuming time, there is the bolt loss of tensioning equipment to strengthen again, increase the manufacturing cost of concrete pile.
Utility model content
First technical problem to be solved in the utility model provides a kind of to be particularly suitable for for above-mentioned prior art present situation the end plate that the main muscle of the axial arranged prestressing force of its reinforcing cage adopts the concrete pile of steel strand, and this end plate provides possibility for the main muscle of prestressing force adopts the concrete pile of steel strand to carry out firm pile extension and adopts more simple structure and method to carry out stretch-draw to its reinforcing cage.
The utility model solves the problems of the technologies described above adopted technical scheme: a kind of end plate, in order to be arranged on the end that the main muscle of prestressing force is the concrete pile of steel strand, comprise end plate body, end plate body has front end face, rear end face and periphery wall, end plate body is provided with multiple lockhole in order to lock steel strand, it is characterized in that: the periphery wall of described end plate body is provided with the caulking groove of U-shaped profile.Described prestressing force main muscle system is axial arranged participates in the stressed presstressed reinforcing steel of pre-stretch-draw in concrete pile reinforcing cage, and it forms the main skeleton of reinforcing cage; Described front end face refers to the side exposing to concrete pile body of end plate body, described rear end face, refers to relative with front end face and the another side of the end plate body contacted with the concrete in pile body.
Due to this end plate be used for the main muscle of prestressing force be in the concrete pile of steel strand, and steel strand could be firm with end plate connection by special syndeton, compared with the end plate that end plate and the main muscle of the prestressing force of same specification of this steel strand concrete pile adopt the conventional concrete stake of rod iron, its thickness has certain increase, and thickness generally increases by 5 more than ㎜; The thickness of this end plate is at least 25 ㎜, generally between 25 ㎜ ~ 60 ㎜.Concrete thickness will mate the diameter of used steel strand, when steel strand 4 diameter used is 11.1 ㎜, then end plate body 1 thickness selects 31 ㎜, be 12.7 ㎜ as selected diameter, the steel strand 4 of 15.2 ㎜, then end plate thickness generally selects 35 ㎜ respectively, 40 ㎜, therefore this end plate facilitates us on periphery wall, be provided with the caulking groove of U-shaped profile, because end plate thickness satisfies condition, before making caulking groove, the thickness of rear wall has enough tensile strength, this is just for providing possibility by adopting the clip parts of U-shaped profile that adjacent both ends plate is joined together to form firm pile extension, also provide possibility for adopting U-shaped profile connecting hoop parts to carry out stretch-draw to the reinforcing cage with aforementioned end plate simultaneously.Certainly, aforementioned thicker end plate is the adjustment done end plate thickness for the concrete pile of steel strand for better mating, adapting to the main muscle of prestressing force, but end plate relatively to thicken be not necessary technology condition and the requirement of technical solutions of the utility model.If in practice of construction to the mechanical property of concrete pile and pile extension performance requirement lower, also the end plate of thinner thickness can be selected, and the caulking groove of U-shaped profile is set on end plate, but, the mechanical property of such its each side of end plate is just relatively poor, as long as but meet different actual demands.
The radial width of the antetheca of above-mentioned caulking groove is less than the radial width of the rear wall of caulking groove.Like this after use clip parts pile extension, clip parts meeting major part can be made or all can embed in end plate body, when pile extension position is subject to radial level power, making clip parts not only bear pulling force but also bear pressure, stressed effect is better, two end plates body is connected more firm.
The rear end face of above-mentioned end plate body has the lug boss of a circle projection, and if end plate is that the loop configuration with centre bore comprises annulus or Fang Huan etc., then this boss is between the internal perisporium and periphery wall of end plate body, and described lockhole runs through described lug boss.This structure makes the hole depth of lockhole on end plate body larger, firm to make steel strand be locked by this lockhole and end plate body, simultaneously, because the position thickness of the lug boss that whole end plate only has lockhole to run through is the thickest, other position thickness of end plate is compared thin, like this while guaranteeing that lockhole has enough degree of depth, reduce the consumptive material of end plate as far as possible, to reduce costs.
Fixed by clip assemblies and lockhole for convenience of steel strand, above-mentioned lockhole is conical through-hole, more firm for making clip assemblies coordinate with lockhole, the cone angle of described conical through-hole is 10 ~ 24 °, this is because: as cone angle is too little, then steel strand easy slippage when stretch-draw is stressed, as cone angle is too large, then clip assemblies easy loose or dislocation after loading lockhole.Described end plate body is provided with multiple threaded connection hole, and each threaded connection hole also runs through described lug boss, is threaded connection hole can be connected more firm with end plate to make other components.
Second technical problem to be solved in the utility model is to provide a kind of main muscle of prestressing force that can realize and adopts the safer firm and pile extension of pile extension between the concrete pile of steel strand to operate the pile extension mechanism of more simple and fast.
A kind of pile extension mechanism, it is characterized in that: comprise as aforementioned arbitrary as described in end plate, the clip parts of contact with each other two pieces of described end plates of two concrete piles connected in order to connecting end portion, described clip parts are adaptive with the caulking groove clamping on the two pieces of described end plate body contacted with each other, the inside wall of clip parts has convex and spaced first insertion section and the second insertion section, and described first insertion section and the second insertion section are inserted in the caulking groove on two pieces of described end plate body contacting with each other respectively.
Described clip parts can be one, but are preferably two or more, and to facilitate itself and described end plate clamping to install, each clip parts are mutually can be spliced to form a circle for the best.
This pile extension mechanism is primarily of the clamping of clip parts to end plate upper embedded groove, the two end plates body contacted with each other in adjacent two concrete piles is linked together, it is mechanical type connected mode, and clip parts are machining manufactures forms quality and be guaranteed, effect is connected more firm compared with welding manner, stability is higher, pile extension operates more simple and fast, not by weather, the external factor impacts such as technical ability, compared with carrying out pile extension with existing mechanical locking mode, it is few that this pile splicing structure relates to parts, the more simple cost of structure is low, and groove is located on the described end plate body of participation pile extension, after pile extension when pile extension position is subject to horizontal external, clip parts directly act on end plate body by stressed under stress, instead of act on the concrete of pile body, thus avoid the destruction that pile body concrete directly suffers external force, make pile extension more firm, pile extension better effects if.
Above-mentioned first insertion section and the second insertion section and caulking groove close-fitting are firm to make to be connected between two end plates.In addition, for guarantee clip parts and the U-shaped profile on above-mentioned end plate body periphery wall the abundant clamping of caulking groove, be connected more firm, the radial width of U-shaped caulking groove antetheca is at least 5 ㎜, and also namely the lowest depth of U-shaped caulking groove is 5 more than ㎜.
Above-mentioned end plate body is rounded, then described clip parts are curved, and this tip plate configurations is applicable to prestressed concrete pipe pile, and clip parts are to arrange two for best.Above-mentioned end plate body is square, then described clip parts linearly shape, and for best, clip parts can also be L-shaped there to be four for this clip parts, and this clip parts are to have two for best, and this tip plate configurations is applicable to prestressed concrete square pile.Certain end plate is different according to the cross-sectional profile of concrete pile, also can be other profile targetedly, and meeting clip parts, to couple together the circle that can form a profile and end plate body upper embedded groove adaptation be the best.
3rd technical problem to be solved in the utility model is to provide a kind of novel structure, can carries out the bindiny mechanism of stretch-draw reliably to the concrete pile reinforcing cage adopting steel strand as the main muscle of prestressing force.
A kind of bindiny mechanism for stretch-draw concrete pile reinforcing cage, wherein reinforcing cage adopts steel strand to be the main muscle of its axial arranged prestressing force, comprise be positioned at reinforcing cage end as aforementioned arbitrary as described in end plate, and with the anchor plate of end plate connection or stretch board, it is characterized in that: described anchor plate or between stretch board with aforementioned end plate by together with connecting hoop anatomical connectivity, wherein, described connecting hoop structure comprises to be located on anchor plate or stretch board and the link slot of U-shaped profile, and with the connecting hoop parts of the caulking groove clamping adaptation on link slot and described end plate body, the inside wall of connecting hoop parts has radial convex and spaced first connecting portion and the second connecting portion, described first connecting portion and the second connecting portion insert in the caulking groove of link slot and described end plate respectively.The caulking groove that connecting groove structure on anchor plate, stretch board and design can be similar on above-mentioned end plate.Link slot can be located at one of them of anchor plate or stretch board, then one of them is connected with end plate by connecting hoop structure, and the other end is then connected by conventional bolt arrangement; Certainly, link slot also can be located on anchor plate and stretch board, then be all connected with end plate by connecting hoop structure both it.
Aforesaid anchor plate is the component of fit with the outer face of mould one end manufacturing concrete pile, in order to be fixed on the one end of the reinforcing cage being with end plate on mould and to be convenient to stretch-draw stressed; Aforesaid stretch board is the die cavity and the end plate connection of reinforcing cage one end that are placed in mould, and is connected with tensioning equipment simultaneously, carries out stretch-draw to drive reinforcing cage.Anchor plate, stretch board can be circular, also can be square or other shapes.
Anchor plate in this bindiny mechanism, between stretch board with end plate body by together with connecting hoop anatomical connectivity, novel and more simple with traditional employing bolt mode syndeton, and convenient to operation, and reduce the waste of bolt, reduce the cost of tension reinforcing steel bar cage.
The inner of above-mentioned anchor plate or stretch board is connected with junction plate, and junction plate forms a part for anchor plate or stretch board, and the link slot of U-shaped is located on the periphery wall of junction plate.It is more than a kind of distressed structure of anchor plate or stretch board.The stretch board of this structure, anchor plate, a form removal after making concrete pile body formed and put and can have more selection mode as required.For example, adopt the anchor plate of this structure according to actual needs, itself and junction plate adopt bolt to be fixedly connected with, junction plate and described end plate adopt together with above-mentioned connecting hoop anatomical connectivity, when to put after concrete pile is body formed, first can remove the bolt on anchor plate, anchor plate and junction plate are loosened and and then make to loosen between junction plate and end plate, then the connecting hoop parts can removed mould and remove between junction plate and end plate, so just can complete to put and open and form removal.
For convenience of anchor plate, stretch board being separated with end plate body, the lateral wall of above-mentioned connecting hoop parts has the jack inserted for instrument.Only need spanner be inserted in jack during separation, just easily connecting hoop parts can be pulled away from caulking groove and link slot.
4th technical problem to be solved by this invention is to provide a kind of pretensioning prestressed concrete pile adopting aforementioned end plate.This concrete pile comprises the hollow prestressed concrete pile of centrifugal forming, also comprises the solid prestressed concrete pile of vibrating forming, and profile can be square pile, pile tube, shaped pile.Its pile body structure is identical with traditional pretensioning prestressed concrete pile, comprises the reinforcing cage in concrete pile body and pile body, it is characterized in that pile body end is provided with foregoing end plate.Adopt the concrete pile of this end plate to be convenient to pile extension and stretch-draw is carried out to steel strand.
Compared with prior art, the utility model has the advantage of: the periphery wall due to end plate body is provided with the caulking groove of U-shaped, make end plate can better mate while the main muscle of prestressing force is the concrete pile of steel strand, carry out simple, firm pile extension for adopting above-mentioned clip parts to provide convenience, the simple connection also for adopting above-mentioned connecting hoop parts to carry out in tension process is provided convenience.Above-mentioned clip parts are adopted to carry out pile extension, and employing connecting hoop structure carries out the connection in tension process, both easy, firm again, avoid the defect differed in pile extension position and concrete pile body intensity and mechanical property, make to adopt steel strand to give full play of as the properties of the concrete pile of the main muscle of prestressing force.
Accompanying drawing explanation
Fig. 1 is the perspective view (not with threaded hole and rounded) of the utility model end plate embodiment;
Fig. 2 is the sectional view (not with threaded hole and rounded) of the utility model end plate embodiment;
Fig. 3 is the perspective view (with threaded hole and rounded) of the utility model end plate embodiment;
Fig. 4 is the sectional view (with threaded hole and rounded) of the utility model end plate embodiment;
Fig. 5 is the perspective view (not with threaded hole and be square) of the utility model end plate embodiment;
Fig. 6 is the sectional view of the utility model pile extension mechanism embodiment;
Fig. 7 is the A place enlarged drawing of Fig. 6;
Fig. 8 is the perspective view (clip parts are curved) of clip parts in the utility model pile extension mechanism embodiment;
Fig. 9 is the perspective view (clip parts are L-shaped) of clip parts in the utility model pile extension mechanism embodiment;
Figure 10 is the perspective view (clip parts linearly shape) of clip parts in the utility model pile extension mechanism embodiment;
Figure 11 is the structural representation (end plate is rounded) of the utility model bindiny mechanism embodiment;
Figure 12 is the perspective view (connecting hoop parts are curved) of connecting hoop parts in the utility model bindiny mechanism;
Figure 13 is the structural representation (end plate is square) of the utility model bindiny mechanism embodiment;
Figure 14 is the utility model perspective view (connecting hoop parts are L-shaped) of connecting hoop parts in connection mechanism embodiment in succession;
Figure 15 is the perspective view (connecting hoop parts linearly shape) of connecting hoop parts in the utility model bindiny mechanism embodiment;
Figure 16 is the anchor plate structural representation of another kind of form of structure in the utility model bindiny mechanism embodiment;
Figure 17 is the stretch board structural representation of another kind of form of structure in the utility model bindiny mechanism embodiment.
Detailed description of the invention
Below in conjunction with accompanying drawing embodiment, the utility model is described in further detail.
As shown in Fig. 1 ~ 5, it is the preferred embodiment of the utility model tip plate configurations.
A kind of end plate, in order to be arranged on the end that the main muscle of prestressing force is the concrete pile of steel strand 4, comprise end plate body 1, the present embodiment is for cirque structure end plate body 1, it has front end face 11, rear end face 12, internal perisporium 13 and periphery wall 14, and end plate body 1 is provided with multiple lockhole 15 in order to be locked by steel strand in it, owing to will arrange tapered clip assemblies 19 in lockhole 15, therefore lockhole 15 is conical through-hole, the taper angle theta of conical through-hole is 14 °.For making steel strand 4 and end plate in conjunction with firm and make end plate mate with the clip assemblies 19 of taper, the end plate that the Thickness Ratio of this end plate body 1 is traditional is thick, its thickness is at least 25 ㎜, general between 25 ㎜ ~ 60 ㎜, concrete thickness will mate the diameter of used steel strand, when steel strand 4 diameter used is 11.1 ㎜, then end plate body 1 thickness selects 31 ㎜, be 12.7 ㎜ as selected diameter, the steel strand 4 of 15.2 ㎜, then end plate thickness generally selects 35 ㎜ respectively, 40 ㎜, this reinforcing bar line 4 diameter is best with coordinating of end plate thickness, certainly, according to construction demand, also other diameter and the arranging scheme of thickness can be taked, only has practical requirement.
Aforementioned end plate body 1 can be a kind of solid platy structure, and also can be a kind of circulus of hollow, aforementioned cyclic structure not only comprises annular, as shown in figures 1-4, can also be square annular, as shown in Figure 5, or other specially-shaped annular structure, as I-shaped, or T-shaped.
For making tip plate configurations that bolt mode also can be adopted to be connected with anchor plate or stretch board, end plate body 1 is provided with multiple threaded connection hole 18, as shown in Figure 3,4.
The rear end face of end plate body 1 has the ringwise lug boss 17 of a circle projection, and this lug boss 17 is between the internal perisporium 13 and periphery wall 14 of end plate body 1, and each lockhole 3 and threaded connection hole 18 all run through described lug boss 17.
The most critical improvement of this tip plate configurations is: the periphery wall 14 of end plate body 1 is provided with the caulking groove 16 of U-shaped profile, caulking groove 16 with in complete annular for the best.The radial width d1 of the antetheca 161 of caulking groove 16 is less than the radial width d2 of the rear wall 162 of caulking groove 16.In view of the security needs of pile extension and the needs of tension reinforcing steel bar cage, the degree of depth of caulking groove also namely the radial width d1 of antetheca 161 be generally greater than 5 ㎜.
Because the end plate thickness adopting steel strand 4 to adopt as the concrete pile of the main muscle of prestressing force is thicker than traditional end plate thickness, this just provides possibility to processing caulking groove 16 at the outer peripheral face of this end plate body 1, namely caulking groove 16 designs especially on the end plate being different from traditional end plate, traditional end plate is due to thinner thickness, be difficult to process on its outer peripheral face the caulking groove meeting tensile strength and require, adjacent both ends plate is joined together to form firm pile extension by the clip parts being placed through employing U-shaped profile of caulking groove 16 simultaneously provides possibility; Also possibility is provided for adopting U-shaped profile connecting hoop parts to carry out stretch-draw to the reinforcing cage with aforementioned end plate.
As shown in Fig. 6 ~ 10, it is the preferred embodiment of the utility model pile extension mechanism.
A kind of pile extension mechanism, comprise and be arranged on the aforementioned end plate that the main muscle of prestressing force is the end of the concrete pile of steel strand, the clip parts 2 of the two end plates contacted with each other of two concrete piles connected in order to connecting end portion, clip parts 2 are adaptive with caulking groove 16 clamping on the two end plates body 1 contacted with each other, clip parts 2 are two or more, each clip parts 2 are mutually can be spliced to form a circle for the best, the inside wall of each clip parts 2 has radial convex and spaced first insertion section 21 and the second insertion section 22 up and down, first insertion section 21 and the second insertion section 22 are inserted in the caulking groove 16 on the two end plates body 1 that contacts with each other respectively.First insertion section 21 and the second insertion section 22 and caulking groove 16 close-fitting.
The radial width d1 of the front annular wall 161 of caulking groove 16 is less than the radial width d2 of the rear annular wall 162 of caulking groove 16.Like this when using clip parts, can make clip parts 2 except insertion section 21,22, its body portion also has part can embed in this caulking groove 16, promotes the attachment force between two end plates body.
Wherein, end plate body 1 can be rounded, and as shown in Figure 8, clip parts 2 are curved, and clip parts 2 have two, and two clip parts can be butted into an annular.
End plate body 1 can also be square, and clip parts 2 are shape or L shape linearly, and as shown in Fig. 9,10, clip parts 2 have four or two.
Be arranged on end plate body 1 because caulking groove 16 is complete, therefore with concrete parts together with surround a groove without the need to passing through by end plate when pile extension, simplify assembly structure, after it also avoid pile extension, pile extension position concrete is directly impaired.This pile extension mechanism is primarily of the clamping of clip parts 2 pairs of end plate upper embedded grooves 16 in addition, the two end plates body 1 contacted with each other in adjacent two concrete piles is linked together, it is mechanical type connected mode, and clip parts are machining manufactures forms quality and be guaranteed, the stability connecting firm degree compared with welding manner is higher, pile extension operates more simple and fast, not by weather, the external factor impacts such as technical ability, compared with carrying out pile extension with existing mechanical locking mode, it is few that this syndeton relates to parts, the more simple cost of structure is low, pile extension position is more firm, mechanical property is better.
As shown in Figure 11 ~ 17, be used for the preferred embodiment of the bindiny mechanism of tension reinforcing steel bar cage for the utility model.
For a bindiny mechanism for stretch-draw concrete pile reinforcing cage, wherein reinforcing cage 3 adopts steel strand 4 for the main muscle of prestressing force, comprises the aforesaid end plate being positioned at reinforcing cage 3 end, and with anchor plate 5, the stretch board 6 of end plate connection.
The main improvement of this bindiny mechanism is: anchor plate 5, stretch board 6 with between end plate by together with connecting hoop anatomical connectivity, in the present embodiment anchor plate 5 and between stretch board 6 with end plate body 1 all by together with connecting hoop anatomical connectivity, wherein, described connecting hoop structure comprises the link slot 51 of the U-shaped profile be located on anchor plate 5 and stretch board 6, 61, and two or more simultaneously with link slot 51, 61 and the connecting hoop parts 8 of caulking groove 16 clamping adaptation, each connecting hoop parts 8 are mutually can be spliced to form a circle for the best, the inside wall of each connecting hoop parts 8 has radial convex and spaced first connecting portion 81 and the second connecting portion 82 up and down, first connecting portion 81 and the second connecting portion 82 insert link slot 51 respectively, 61 and caulking groove 16 in.
The lateral wall of connecting hoop parts 8 has the jack 83 inserted for Wrench.
Wherein, end plate body 1 can be rounded, and as shown in Figure 11,12, connecting hoop parts 8 are curved, and connecting hoop parts 8 have two.End plate body 1 can also be square, and connecting hoop parts 8 are shape or L shape linearly, and as shown in Figure 13,14,15, connecting hoop parts 8 have four or two.
In addition, anchor plate 5, stretch board 6 also can adopt following distressed structure, as shown in Figure 16,17, the inner of anchor plate 5 or stretch board 6 is connected with junction plate 24, junction plate 24 is connected by many screw rods with between anchor plate 5 or stretch board 6, junction plate 24 forms a part for anchor plate 5 or stretch board 6, and the link slot 51,61 of U-shaped is located on the periphery wall of junction plate 24.
The present embodiment is the pretensioning prestressed concrete pile adopting aforementioned end plate, comprises the hollow prestressed concrete pile of centrifugal forming, also comprises the solid prestressed concrete pile of vibrating forming, and profile can be square pile, pile tube, shaped pile.Its pile body structure is identical with traditional pretensioning prestressed concrete pile, comprises the reinforcing cage in concrete pile body and pile body, and the end of concrete pile is provided with the end plate described in previous embodiment.The profile of concrete pile can with reference to existing pretensioning prestressed concrete pile.Drawing omits
The manufacture method of the concrete pile of the bindiny mechanism of aforesaid end and tension reinforcing steel bar cage is adopted to comprise following steps
(1), steel strand 4 customized cut-off, make reinforcing cage, allow every root steel strand 4 on reinforcing cage 3 be fixed with end plate connection by the lockhole 15 on described end plate.
(2), the described end plate at reinforcing cage 3 two ends is linked together respectively by connecting hoop structure and described anchor plate 5 and stretch board 6, described connecting hoop structure comprises is located at anchor plate 5, on stretch board 6 and the link slot 51 of U-shaped profile, 61, and with link slot 51, 61 and end plate body 1 on the connecting hoop parts 8 of caulking groove 16 clamping adaptation, the inside wall of each connecting hoop parts 8 has convex and spaced first connecting portion 81 and the second connecting portion 82, first connecting portion 81 and the second connecting portion 82 insert link slot 51 respectively, 61 and end plate body 1 on caulking groove 16 in.In this step, the inner of anchor plate 5 or stretch board 6 can also be connected with junction plate 24, and junction plate 24 forms a part for anchor plate 5 or stretch board 6 and looks as a whole with anchor plate or stretch board, and the link slot 51,61 of U-shaped is located on the periphery wall of junction plate.
(4), by the reinforcing cage 3 with anchor plate 5 and stretch board 6 be placed in mould 20, wherein, stretch board 6 is arranged in die cavity, and anchor plate 5 is fitted with the outer face of mould 20 side.
(5), to feeding in mould, by tensioning equipment, stretch-draw is carried out to described reinforcing cage 3, after steel strand 4 being stretched to the numerical value of regulation, lock reinforcing cage.In this step, gripper shoe 7, tensioning screw rod 9 and locking nut 10 are also comprised to the tensioning equipment that reinforcing cage carries out stretch-draw, stretch board 6 has counterbore 62, the threaded shank 91 of tensioning screw rod 9 is from the inner perforation 71 through passing again after the counterbore 62 stretch board in gripper shoe 7 of reinforcing cage 3, the head 92 of tensioning screw rod 9 is sunken in the macropore portion of the counterbore 62 on stretch board, and the thread rod part 91 that locking nut 10 is threaded in tensioning screw rod 9 is positioned at gripper shoe (7) outside.
(7), make concrete pile shaping by centrifuge or shaking device vibration.
(8), stream curing is carried out to shaping concrete pile.
(9), form removal, and to remove and the anchor plate 5 of described end plate connection and stretch board 6.
Although more than describe in detail the preferred embodiments of the present invention, should be expressly understood that, for a person skilled in the art, the present invention can have various modifications and variations.All any amendments done within the spirit and principles in the present invention, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (11)
1. an end plate, in order to be arranged on the end that the main muscle of prestressing force is the concrete pile of steel strand (4), comprise end plate body (1), end plate body (1) has front end face (11), rear end face (12) and periphery wall (14), end plate body (1) is provided with multiple lockhole (15) in order to lock steel strand, it is characterized in that: the periphery wall (14) of described end plate body (1) is provided with the caulking groove (16) of U-shaped profile, the thickness (H) of described end plate body (1) is 25 ㎜ ~ 60 ㎜.
2. end plate according to claim 1, is characterized in that: the radial width (d1) of the antetheca (161) of described caulking groove (16) is less than the radial width (d2) of the rear wall (162) of caulking groove (16).
3. end plate according to claim 1, it is characterized in that: the rear end face (12) of described end plate body (1) has the lug boss (17) of a circle projection, and described lockhole (3) runs through described lug boss (17).
4. end plate according to claim 3, is characterized in that: described end plate body (1) is provided with multiple threaded connection hole (18), and each threaded connection hole (18) runs through described lug boss (17).
5. end plate according to claim 1, is characterized in that: described lockhole (15) is conical through-hole, and the cone angle (θ) of lockhole (15) is 10 ~ 24 °.
6. a pile extension mechanism, it is characterized in that: comprise as arbitrary in aforementioned Claims 1 to 5 as described in end plate, the clip parts (2) of contact with each other two pieces of described end plates of two concrete piles connected in order to connecting end portion, described clip parts (2) are adaptive with caulking groove (16) clamping on the two pieces of described end plate body (1) contacted with each other, the inside wall of clip parts (2) has convex and spaced first insertion section (21) and the second insertion section (22), described first insertion section (21) and the second insertion section (22) are inserted in the caulking groove (16) on two pieces of described end plate body (1) contacting with each other respectively.
7. pile extension mechanism according to claim 6, is characterized in that: described clip parts (2) are two or more.
8. pile extension mechanism according to claim 6, is characterized in that: described end plate body (1) is rounded, and described clip parts (2) are curved; Or described end plate body (1) is square, described clip parts (2) linearly shape or L shape.
9. the bindiny mechanism for stretch-draw concrete pile reinforcing cage, wherein reinforcing cage (3) adopts steel strand (4) to be the main muscle of its axial arranged prestressing force, it is characterized in that: comprise be positioned at reinforcing cage (3) end as arbitrary in aforementioned Claims 1 to 5 as described in end plate, and with the anchor plate (5) of described end plate connection or stretch board (6), described anchor plate (5) or stretch board (6) with between described end plate by together with connecting hoop anatomical connectivity, described connecting hoop structure comprises to be located on anchor plate (5) or stretch board (6) and the link slot (51 of U-shaped profile, 61), and with link slot (51, 61) the connecting hoop parts (8) of caulking groove (16) the clamping adaptation and on described end plate body (1), the inside wall of connecting hoop parts (8) has convex and spaced first connecting portion (81) and the second connecting portion (82), described first connecting portion (81) and the second connecting portion (82) insert link slot (51 respectively, 61) and in caulking groove (16).
10. the bindiny mechanism for stretch-draw concrete pile reinforcing cage according to claim 9, it is characterized in that: the inner of described anchor plate (5) or stretch board (6) is connected with junction plate (24), junction plate (24) forms a part for anchor plate (5) or stretch board (6), and the link slot (51,61) of U-shaped is located on the periphery wall of junction plate (24).
11. 1 kinds of pretensioning prestressed concrete piles, comprise the reinforcing cage in concrete pile body and pile body, it is characterized in that: the end of this concrete pile body be provided with as arbitrary in aforementioned Claims 1 to 4 as described in end plate.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520227377.0U CN204645030U (en) | 2015-03-24 | 2015-04-15 | End plate, pile extension mechanism, for the bindiny mechanism of tension reinforcing steel bar cage and concrete pile |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2015201677368 | 2015-03-24 | ||
| CN201520167736 | 2015-03-24 | ||
| CN201520227377.0U CN204645030U (en) | 2015-03-24 | 2015-04-15 | End plate, pile extension mechanism, for the bindiny mechanism of tension reinforcing steel bar cage and concrete pile |
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| CN204645030U true CN204645030U (en) | 2015-09-16 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105133600A (en) * | 2015-09-21 | 2015-12-09 | 周兆弟 | Compressive pile |
| CN108625358A (en) * | 2018-06-08 | 2018-10-09 | 吴健 | Pile body protective tip and prefabricated pile with the pile body protective tip |
| CN110238958A (en) * | 2019-05-31 | 2019-09-17 | 俞晓东 | Centrifugal concrete pile mould and the flat car to shelve the mold |
| CN112392031A (en) * | 2020-11-19 | 2021-02-23 | 浙江坤皇基础工程有限公司 | High-bearing and anti-pulling prestressed concrete pipe pile |
| CN113174939A (en) * | 2021-04-12 | 2021-07-27 | 建华建材（中国）有限公司 | Enhancement mode end plate and precast pile |
-
2015
- 2015-04-15 CN CN201520227377.0U patent/CN204645030U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105133600A (en) * | 2015-09-21 | 2015-12-09 | 周兆弟 | Compressive pile |
| CN108625358A (en) * | 2018-06-08 | 2018-10-09 | 吴健 | Pile body protective tip and prefabricated pile with the pile body protective tip |
| CN110238958A (en) * | 2019-05-31 | 2019-09-17 | 俞晓东 | Centrifugal concrete pile mould and the flat car to shelve the mold |
| CN112392031A (en) * | 2020-11-19 | 2021-02-23 | 浙江坤皇基础工程有限公司 | High-bearing and anti-pulling prestressed concrete pipe pile |
| CN113174939A (en) * | 2021-04-12 | 2021-07-27 | 建华建材（中国）有限公司 | Enhancement mode end plate and precast pile |
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