CN208328912U - A kind of steel strand wires concrete-pile - Google Patents
A kind of steel strand wires concrete-pile Download PDFInfo
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- CN208328912U CN208328912U CN201820209700.5U CN201820209700U CN208328912U CN 208328912 U CN208328912 U CN 208328912U CN 201820209700 U CN201820209700 U CN 201820209700U CN 208328912 U CN208328912 U CN 208328912U
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Abstract
The utility model relates to a kind of steel strand wires concrete-piles, including concrete pile body, the steel reinforcement cage in concrete-pile body, steel reinforcement cage includes steel strand wires, stirrup, concrete pile body at least one end is equipped with end plate, the bellmouth that several apertures from the inside to the outside are gradually expanded is provided at least one piece of end plate, multi-disc intermediate plate is placed in bellmouth, the inner surface of each intermediate plate is equipped with latch, multi-disc intermediate plate split forms the chuck component to clip steel strand wires, the outer peripheral surface of chuck component forms the conical surface, chuck component is centrally formed interior perforation, and steel strand wires are locked in interior perforation；It is characterized by: being equipped with the barrier component for separating chuck component inner end and concrete in the inner end of chuck component, which can form one and give clip assemblies the further interior space moved.Because of the presence of reserved space, chuck component can also be moved inward further with respect to end plate, under the mating reaction with bellmouth, also just further clamp steel strand wires, guarantee steel strand wires without departing from end plate.
Description
Technical field
The utility model belong to the pile foundation engineering of all kinds of architectural structure systems technical field more particularly to a kind of tool
There is the pretensioned prestressing centrifugal concrete pile of steel strand wires.
Background technique
All kinds of building structure are generally directed to pile foundation engineering, and existing prestressed-concrete pile generally uses prestressing force
Concrete uses rod iron as main reinforcement, and because it is prefabrication, high production efficiency constructs the advantages that convenient, the period is very fast and is to build
Build that field is a large amount of, is widely used and continues up using so far.But during production and application, main reinforcement uses the coagulation of rod iron
There are more problems for native stake, as rod iron brittleness is larger, tensile strength is low, the heading of the hot upsetting rod iron will lead to the strong of pier nose position
Degree is undermined the phenomenon that material is damaged, will appear Stress non-homogeneity in stretching process or even break, and existing main reinforcement is caused to use
The technical performances such as bending resistance, the shearing resistance of the concrete-pile of steel bar for prestressed concrete are obviously insufficient.
Because the ductility of steel strand wires is good, tensile strength it is high (its tensile strength design value be 1320MPa, tensile strength highest can
Up to 1960MPa), Chinese Enterprises and scientific research institution also have conducted extensive research steel strand wires applied to concrete-pile in recent years, and
Generate a kind of technical solution of steel strand wires concrete-pile with practical value.Such as a Patent No. ZL201410034851.8
Chinese invention patent " a kind of pre-tensioning system centrifugal concrete pile and production with steel strand wires of (notification number CN103741672B)
Method " such a steel strand wires concrete-pile is disclosed, including hollow concrete pile body, the reinforcing bar in concrete-pile body
Cage, steel reinforcement cage include the prestressing force main reinforcement axially arranged, the around the home stirrup outside main reinforcement and the end plate positioned at pile body end, are answered in advance
Muscle is advocated for steel strand wires, and at least one piece of end plate is connect with steel strand wires using first clamping piece formula structure, i.e., is provided on the block end plate
The bellmouth that several apertures from the inside to the outside are gradually expanded, bellmouth are arranged in a one-to-one correspondence with steel strand wires, are placed in each bellmouth
There is multi-disc intermediate plate, the inner surface of each intermediate plate is equipped with latch, and multi-disc intermediate plate split forms the chuck component to clip steel strand wires, folder
The outer peripheral surface of head assembly forms the conical surface to match with the bellmouth, and chuck component is centrally formed interior perforation, and each steel strand wires are equal
Interior perforation in corresponding chuck component is simultaneously locked by interior perforation, and the outer end face of chuck component is flush to or outer lower than end plate
End face；Multiple threaded connection holes to connect also are provided on end plate.
Technical solution disclosed in aforementioned patent steel strand wires apply to concrete-pile to be achieved and have industrial applicability
Real value, greatly improve the bending resistance, shearing resistance and security performance of concrete pile body, so its there is also need to improve it
Place.In the tension process of production steel strand wires concrete-pile, when to the setting value of steel strand prestress tensioning to steel strand wires intensity
(usually 70~75% or so of steel strand wires ultimate tension value), chuck component opposite end Board position is static and is locked
In the bellmouth of end plate, after by casting concrete, centrifugation, steam curing process complete manufacture, thus the finished product coagulation produced
The chuck component inner end (that one end that inner end refers to the close concrete of chuck component) of native stake with it is being solidified in concrete-pile, high
The concrete of intensity is direct, closely contacts, and this contact is hard contact, thus the inner end of chuck component is by concrete
Stop and can not be moved again into concrete-pile body.However problem is, in the actual application of steel strand wires concrete-pile
In, such as after two concrete-piles are mutually spliced by the end plate of pile body, when pile extension position is by great lateral force or pulling force
When, the stress that will lead to the steel strand wires of chuck component and its institute clip in concrete-pile end plate bellmouth accordingly increases severely, and works as steel
When the stress of twisted wire is more than setting value (for example the 70% of steel strand wires ultimate tension value) in tension process, chuck component is just
The trend that needs to sink in bellmouth, then move into concrete-pile body is formed, so as under the cooperation of bellmouth
Bigger chucking power is provided to steel strand wires so that the huge external force that steel strand wires are unlikely to be attached pulls, still, as existing
There are the above-mentioned art solutions of technology, directly, closely because of concrete high-intensitive in its chuck component inner end and concrete-pile
Hard contact, further can not provide any space to concrete pile body intrinsic displacement to chuck component, thus under such situation
Chuck component not can increase the chucking power to steel strand wires with additional huge external force of contending with, therefore in the situation by huge external force
Lower chuck component cannot continue to clamp steel strand wires, cause part steel strand wires to be detached from chuck component and end plate, so that steel strand wires
The bending resistance of concrete-pile end pile extension position, shearing resistance, tensile property substantially reduce, and influence the safety of engineering.These technologies are asked
Topic is that applicant is just gradually to find in very long and arduous research work, and eventually find the basic reason of problem.Separately
Outside, each chuck component is made of three pieces intermediate plate, and so in actual application, the clip assemblies assembling of three clamping piece structures is suitable
Inconvenience, three easily misplace, so that production efficiency substantially reduces.
Utility model content
Technical problem to be solved in the utility model be it is insufficient for the above-mentioned prior art and provide it is a kind of can be in reality
Ensure that chuck component clamps the steel strand wires concrete-pile of steel strand wires always in engineer application environment, it is ensured that steel strand wires concrete-pile exists
When by huge external force, steel strand wires can also greatly improve bending resistance, shearing resistance, tension of concrete-pile etc. with the firm connection of end plate
The safety of technical performance and engineering.
Technical solution adopted by the utility model to solve the above technical problems is as follows: a kind of steel strand wires concrete-pile, including
Concrete pile body, the steel reinforcement cage in concrete-pile body, steel reinforcement cage include stirrup and the steel strand wires axially arranged, the coagulation
Native pile body at least one end is equipped with end plate, is provided with the bellmouth that several apertures from the inside to the outside are gradually expanded, institute at least one piece of end plate
State and be placed with multi-disc intermediate plate in bellmouth, the inner surface of each intermediate plate is equipped with latch, intermediate plate split described in multi-disc formed to
The chuck component of clip steel strand wires, the outer peripheral surface of the chuck component are the conical surface to match with the bellmouth, in chuck component
It is formed centrally interior perforation, steel strand wires are locked in interior perforation；It is characterized by: being equipped in the inner end of the chuck component by collet
The barrier component that component inner end and concrete separate, the barrier component form one for chuck component further to concrete pile body
The space of intrinsic displacement.Stirrup is usually around the home outside the steel strand wires as main reinforcement.Multi-disc, quantitatively refer to two panels or two panels with
On.
One of preferred embodiment as barrier component, above-mentioned barrier component are by the material with certain elastic deformability
Manufactured gasket, the self-deformation of gasket formed it is described for chuck component further to the space of concrete pile body intrinsic displacement.It should
Gasket presets and is fitted in the inner end of chuck component before the molding of steel strand wires concrete-pile, usually in the system of steel reinforcement cage
Make the inner end that gasket is mounted on to chuck component in process, so that the gasket can be intracorporal mixed by the inner end of chuck component and stake
Solidifying soil separates, and needs after chuck component and its steel strand wires accommodated are by huge external force to concrete pile body intrinsic displacement
When, with elastic deformation ability gasket just for this movement of chuck component provide may and space.
Barrier component can also be the foams that chuck component inner end is arranged in, and the deformation of foams can form the sky
Between.Only need to realize the effect of isolation concrete, this scheme phase in production to the inner end spray foam of chuck component
To simplicity.
As another preferred embodiment of barrier component, above-mentioned barrier component is the lid with cavity, the cavity of lid
Direction and the inner end for covering the chuck component, have between the bottom of the cavity of the lid and the inner end of the chuck component
Spacing is to form the space.Spacing forms space so that chuck component can further be moved into concrete-pile body.
It is further improved, the bottom of above-mentioned lid is provided with for steel strand wires for the orientation problem for solving lid in favor of manufacture
The perforation being pierced by, lid are threaded through on steel strand wires.First lid is threaded through on steel strand wires in production and is covered in chuck component
End.
It is further improved, each chuck component is made of two intermediate plates；Compared with three intermediate plates, two intermediate plate groups
Dress forms chuck component and is more convenient, and defect is that its chucking power opposite can slacken compared with three intermediate plates.The periphery of the chuck component
Equipped with annular groove, it is placed in the annular groove by the cranse in multi-disc intermediate plate hoop jail.Cranse can be the classes such as wire loop or rubber ring
As elastic ring, setting cranse can be pre-positioned two panels intermediate plate to form chuck component, convenient for assembling.To reinforce two panels folder
Chucking power between piece and steel strand wires is further improved, and has the notch being axially arranged along chuck component on every intermediate plate,
Notch through intermediate plate inner surface and outer peripheral surface and the stub end of intermediate plate is divided into two parts, to form a deformation space,
But notch does not extend to the small head end of intermediate plate excessively, thus the small head end of intermediate plate is not divided and still maintains an entirety, this
Sample will form deformation position everywhere by the chuck component that the nicked intermediate plate of two panels forms, and two between respectively two intermediate plates
Joint surface and two incision sites, and deformation position there are three the chuck components of traditional three intermediate plates composition, therefore this structure energy
Clamping force is set to be better than the clamping piece structure of traditional three clip types instead.Kerf width be 0.5 millimeter to 3 millimeters between, notch
Axial length is a quarter of intermediate plate axial length or more.
The chuck component is all made of between two pieces of end plates and steel strand wires to connect with the mode that bellmouth cooperates.In this way
The both ends of steel strand wires can chuck component and bellmouth cooperation by way of with the firm connection of end plate；Can certainly only have
One piece of end plate is connect by the way of chuck component and bellmouth cooperation with steel strand wires, and the other end of concrete pile body can not have
The steel strand wires of the other end can use other way connection, is fixed to realize production in end plate, or production.
Preferably, above-mentioned latch is pawl, the flank of tooth of close chuck component inner end in the center line of latch and the latch
Between form the first angle, the second folder is formed in the center line of latch and the latch between the flank of tooth of chuck component outer end
Angle, the angle of the angle of the first angle less than the second angle.Pawl is conducive to interior perforation direction folder of the steel strand wires with respect to chuck component
The outer extreme direction of head assembly is mobile, while after the completion of tensioning, can effectively prevent interior perforation court of the steel strand wires with respect to chuck component
Mobile to the interior extreme direction of clip assemblies, i.e., clip assemblies more firm can clamp steel strand wires.It is installed on steel strand wires and end plate
When intermediate plate, it is not easily to fall off to install rear jaw.The center line of latch refers to the straight line perpendicular to chuck component central axes
The angle of above-mentioned first angle is 10~30 °, and preferably 20 °, the angle of second angle is 60~80 °, excellent
It is selected as 70 °.And first angle angle and the sum of the angle of the second angle be 90 °.
Compared with prior art, the advantages of this steel strand wires concrete-pile, is: because the inner end of chuck component is equipped with barrier portion
Part, baffle component separate chuck component inner end with concrete, and the barrier component is chuck component further to concrete
Movement provides a displacement space in pile body, when the end pile extension position of concrete pile body is by great lateral force or pulling force
When, the inner end of chuck component can be in the space that baffle component provides further to concrete under the pulling function of steel strand wires
It is mobile inside pile body, thus chuck component can make adaptability sinking in bellmouth, under the mating reaction with bellmouth, folder
Head assembly will provide bigger chucking power so that the huge external force that steel strand wires are unlikely to be attached is pulled to steel strand wires.This
The steel strand wires concrete-pile of sample is in actual application environment, when the power that the steel strand wires of concrete-pile end are subject to is greater than steel strand wires pole
When limiting the 70~75% of intensity (design value), it is ensured that steel strand wires without departing from end plate, greatly improve concrete-pile bending resistance,
The safety of the technical performances such as shearing resistance, tension and concrete pile body pile extension position, to fundamentally improve the safety of engineering.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model one embodiment；
Fig. 2 is enlarged drawing at the A of Fig. 1；
Fig. 3 is the side view of the utility model one embodiment；
Fig. 4 is the schematic perspective view of chuck component in two embodiments of the utility model；
Fig. 5 is the main view of chuck component in two embodiments of the utility model；
Fig. 6 is the cross-sectional view of chuck component in two embodiments of the utility model；
Fig. 7 is the stereogram exploded view of chuck component in two embodiments of the utility model；
Fig. 8 is the partial schematic diagram of second embodiment of the utility model.
Specific embodiment
The utility model is described in further detail below in conjunction with figure embodiment.
It is one embodiment of the utility model as shown in Fig. 1~7.
A kind of steel strand wires concrete-pile, be pre-tensioning system centrifugal concrete pile, including concrete pile body 1, be located at concrete-pile
Steel reinforcement cage in body 1, concrete pile body 1 can be round stake, be also possible to barrette, polygonal pile, H-type stake and various first open
Method prestressed concrete shaped pile, this patent is to the pile-type of concrete-pile without limiting.
Steel reinforcement cage include the steel strand wires 3 axially arranged, around the home the stirrup 4 outside steel strand wires 3 and be located at 1 end of concrete pile body
The end plate 2 in portion, fixation between stirrup 4 and steel strand wires 3 can using binding by hand or using automatic binding machine binding or
Other mechanical systems are fixed, and concrete pile body 1 can also axially be disposed with nonprestressed reinforcement, anchor rib and pile protection hoop, are
The conventional design of concrete-pile.
It is provided with the bellmouth 21 that several apertures from the inside to the outside are gradually expanded on two end plates 2, is put in each bellmouth 21
It is equipped with two panels intermediate plate 5, the inner surface of each intermediate plate 5 is equipped with latch 51, and latch 51 is pawl, the center line 511 and the card of latch 51
The first angle α 1 is formed between the flank of tooth of chuck component inner end in tooth 51, in the center line 511 of latch 51 and the latch 51
The second angle α 2 is formed between the flank of tooth of chuck component outer end, the angle of the angle of the first angle α 1 less than the second angle α 2
Degree.The sum of the angle of first angle α 1 and the angle of the second angle α 2 are 90 °.The angle of the first angle α 1 in the present embodiment is
20 °, the angle of the second angle α 2 is 70 °.
There is the notch 52 being axially arranged along chuck component, notch 52 runs through the outer peripheral surface and Nei Biao of intermediate plate 5 on intermediate plate 5
The stub end of intermediate plate is simultaneously divided into two parts to form a deformation space by face, but notch 52 does not extend to intermediate plate excessively
Small head end, thus the small head end of intermediate plate is not divided and still maintains an entirety.The small head end of intermediate plate refers to close to chuck component
That one end of inner end, the stub end of intermediate plate is then proximate to that one end of pile body end plate outer end face, corresponding with small head end.Notch 52
Axial length be 5 axial length of intermediate plate a quarter more than, width be 0.5 millimeter to 2 millimeters between.
5 split of multi-disc intermediate plate forms the chuck component 6 to clip steel strand wires 3, and the outer peripheral surface of chuck component 6 is formed and institute
The conical surface 61 of the matching of bellmouth 21 is stated, the periphery of chuck component 6 is equipped with annular groove 63, is placed in annular groove 63 by multi-disc intermediate plate
The cranse 9 in 5 hoop jails.Chuck component 6 is centrally formed interior perforation 62, and each steel strand wires 3 both pass through the internal tooth in corresponding chuck component 6
Hole 62 is simultaneously locked by interior perforation 62, is provided in the inner end of chuck component 6 and is hindered 6 inner end of chuck component and the intracorporal concrete of stake
Disconnected barrier component 7, the barrier component 7 can form out one for chuck component 6 further to 1 intrinsic displacement of concrete pile body
Space P.
As described in Figure 2, the barrier component in the present embodiment is to pad made of the material with certain elastic deformability
Piece 7, the gasket 7 are threaded through on steel strand wires and are arranged in advance the inner end of chuck component, pad before the molding of steel strand wires concrete-pile
The self-deformation (gasket 7 is extruded) of piece 7 can form space P, and the perforation 71 passed through for steel strand wires 3 is provided on gasket 7.For that will press from both sides
The inner end of head assembly 6 is preferably separated with the intracorporal concrete of stake, and the needs of gasket 7 are bonded with the inner end of chuck component 6.
Certain barrier component is also possible to that the foams of 6 inner end of chuck component are arranged in, and the deformation of foams can form institute
State space P.
The preparation method of this steel strand wires concrete-pile and method mentioned in background patents are essentially identical, and difference exists
Pass through the folder in the bellmouth 21 that is located on end plate after allowing every steel strand wires 3 on steel reinforcement cage to pass through barrier component in step 3 again
Head assembly 6 is connected and fixed with end plate 2.
This steel strand wires concrete-pile is in actual application environment, when the power that the steel strand wires 3 of concrete-pile end are subject to is greater than
It can be that chuck component 6 is further because 6 inner end of chuck component is provided with when 70~75% (design value) of 3 ultimate strength of steel strand wires
Mobile into pile body to provide the baffle component in space, chuck component 6 can also be moved further with respect to end plate 2 into concrete-pile body
It is dynamic, under the mating reaction with bellmouth 21, steel strand wires 3 are also just further clamped, guarantee steel strand wires 3 are without departing from end plate 2, greatly
Width improves the safety of the technical performances and concrete-pile pile extension position such as bending resistance, shearing resistance, the tension of concrete-pile.
As shown in figure 8, being second embodiment of the utility model.
The difference of the present embodiment and one embodiment is: barrier component is the lid 8 with cavity, lid 8
Cavity direction and the inner end for covering the chuck component 6, have between the bottom of the cavity of lid 8 and the inner end of chuck component 6
The presence of spacing d, spacing d are to form space P, for chuck component 6 further to coagulation under by huge external force
Native pile body intrinsic displacement provides space and may.The open end of lid 8 and the inner face of end plate 2 are fixed, and the rear end face of lid 8 is opened
There is the perforation 81 passed through for steel strand wires 3.
Although the preferred embodiments of the utility model have been described above in detail, it is to be clearly understood that for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within any modification, equivalent replacement, improvement and so on, should be included within the scope of protection of this utility model.
Claims (9)
1. a kind of steel strand wires concrete-pile, including concrete pile body (1), the steel reinforcement cage being located in concrete pile body (1), steel reinforcement cage
The steel strand wires (3) including stirrup (4) and axially arranged, the concrete pile body (1) at least one end are equipped with end plate (2), and at least one
It is provided with the bellmouth (21) that several apertures from the inside to the outside are gradually expanded on block end plate (2), is placed in the bellmouth (21) more
The inner surface of piece intermediate plate (5), each intermediate plate (5) is equipped with latch (51), and intermediate plate (5) split described in multi-disc is formed to clip steel
The chuck component (6) of twisted wire (3), the outer peripheral surface of the chuck component (6) are the conical surface (61) to match with the bellmouth (21), folder
Head assembly (6) is centrally formed interior perforation (62), and the steel strand wires (3) are locked in interior perforation (62)；It is characterized by:
The inner end of the chuck component (6) is equipped with the barrier component (7,8) for separating chuck component (6) inner end and concrete, the barrier
Component (7,8) forms one for chuck component (6) further to the space (P) of concrete pile body (1) intrinsic displacement.
2. steel strand wires concrete-pile according to claim 1, it is characterised in that: the barrier component is by with certain bullet
Gasket (7) made of the material of property deformability, the self-deformation of the gasket (7) can form the space (P).
3. steel strand wires concrete-pile according to claim 1, it is characterised in that: the barrier component is the lid with cavity
Sub (8), the cavity of lid (8) towards and cover the inner ends of the chuck component (6), the bottom of the cavity of the lid (8) with
Have spacing (d) to form the space (P) between the inner end of the chuck component (6).
4. steel strand wires concrete-pile according to claim 3, it is characterised in that: the bottom of the lid (8) is provided with for steel
The perforation (81) that twisted wire (3) is pierced by, lid are threaded through on steel strand wires (3).
5. steel strand wires concrete-pile according to claim 1, it is characterised in that: the barrier component is to be arranged in collet group
The foams of part (6) inner end, the deformation of foams can form the space (P).
6. steel strand wires concrete-pile according to claim 1, it is characterised in that: each chuck component (6) is by two
Intermediate plate (5) composition, the every intermediate plate (5) have the notch (52) being axially arranged along chuck component (6), notch (52)
The stub end of the every intermediate plate (5) is divided into two parts.
7. steel strand wires concrete-pile according to claim 1, it is characterised in that: the latch (51) is pawl, latch
(51) the first angle (α 1) is formed between the flank of tooth of chuck component (6) inner end in center line (511) and the latch (51),
The second angle is formed between the flank of tooth of chuck component (6) outer end in the center line (511) of latch (51) and the latch (51)
(α 2), angle of the angle less than the second angle (α 2) of the first angle (α 1).
8. steel strand wires concrete-pile according to claim 7, it is characterised in that: the angle of first angle (α 1) is 10
~30 °, the angle of second angle (α 2) is 60~80 °.
9. steel strand wires concrete-pile according to claim 8, it is characterised in that: the angle of first angle (α 1) and the
The sum of angle of two angles (α 2) is 90 °.
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| CN201820209700.5U CN208328912U (en) | 2018-02-06 | 2018-02-06 | A kind of steel strand wires concrete-pile |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108179742A (en) * | 2018-02-06 | 2018-06-19 | 俞晓东 | A kind of steel strand wires concrete-pile |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108179742A (en) * | 2018-02-06 | 2018-06-19 | 俞晓东 | A kind of steel strand wires concrete-pile |
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