CN211143061U - Steel strand concrete pile - Google Patents
Steel strand concrete pile Download PDFInfo
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- CN211143061U CN211143061U CN201920827718.6U CN201920827718U CN211143061U CN 211143061 U CN211143061 U CN 211143061U CN 201920827718 U CN201920827718 U CN 201920827718U CN 211143061 U CN211143061 U CN 211143061U
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Abstract
The utility model relates to a pretensioning method centrifugation concrete pile with steel strand wires, including concrete pile body, steel reinforcement cage, the steel reinforcement cage includes prestressing force owner muscle, stirrup and end plate, its characterized in that: the prestressed main reinforcement is a steel strand, a plurality of tapered holes with gradually enlarged diameters from inside to outside are formed in at least one end plate, the tapered holes and the steel strand are arranged in a one-to-one correspondence mode, a plurality of clamping pieces are placed in each tapered hole, clamping teeth are arranged on the inner surfaces of the clamping pieces, the clamping pieces are spliced to form a clamping head assembly used for clamping the steel strand, a cone face matched with the tapered holes is formed on the outer peripheral face of the clamping head assembly, inner tooth holes are formed in the center of the clamping head assembly, and the steel strand penetrates through the inner tooth holes in the corresponding clamping head assembly and is locked by the inner tooth holes. It is a practical centrifugal concrete pile with steel strands. The utility model discloses still relate to the manufacturing method of aforementioned centrifugal concrete pile.
Description
Technical Field
The utility model belongs to the technical field of the pile foundation engineering of all kinds of building structure systems, especially, relate to a concrete pile with steel strand wires.
Background
Because the tensile strength of the steel strand is high (the design value of the tensile strength is 1320MPa, and the maximum tensile strength can reach 1960MPa), in recent years, a great deal of research is carried out on the application of the steel strand to the centrifugal concrete pile by Chinese enterprises and scientific research institutions, and a mature technical scheme is formed at present.
Such a pile having practical production value and a manufacturing method thereof are disclosed in the Chinese patent application "a pretensioned centrifugal concrete pile with steel strand and a manufacturing method thereof" having patent number Z L201410035992.1 (publication number CN103741674B), wherein the manufacturing method comprises the following steps
(1) Cutting the steel strand at a fixed length;
(2) manufacturing a reinforcement cage;
(3) connecting and fixing each steel strand on the reinforcement cage with the end plate through a clamping piece assembly positioned in a conical hole on the end plate;
(4) feeding to the lower half mold, and closing the upper half mold;
(5) and respectively tensioning each steel strand.
(6) And carrying out centrifugal molding;
(7) and steam curing;
(8) removing the form and simultaneously removing the connection between the anchoring plate and the end plate for expansion;
(9) and cutting and polishing the steel strand exposed out of the end plate to ensure that the steel strand is not exposed out of the outer end face of the end plate.
The traditional steel reinforcement cage is manufactured by roll welding through a roll welding machine, the roll welding machine is only suitable for manufacturing the steel reinforcement cage with the traditional steel bar as a main reinforcement, the steel reinforcement cage with the steel strand is not suitable for roll welding through the roll welding machine, the steel reinforcement cage comprises a prestressed main reinforcement arranged axially and a stirrup wound outside the main reinforcement, the prestressed main reinforcement is the steel strand, manual binding is mainly adopted for fixing the stirrup and the steel strand, and the winding mode of the stirrup is time-consuming and low in efficiency.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the first technical problem that will solve is not enough and a steel strand wires concrete pile that provides to above-mentioned prior art, and the steel reinforcement cage in this concrete pile adopts unique design for the steel reinforcement cage has the advantage that makes conveniently, production efficiency is high, provides probably for the automated manufacturing of steel reinforcement cage.
The utility model provides a technical scheme that above-mentioned first technical problem adopted does: a steel strand concrete pile comprises a concrete pile body and a plurality of steel strands arranged in the concrete pile body, wherein the steel strands are axially arranged along the concrete pile body; the method is characterized in that: the concrete pile body is also internally provided with a stirrup and a construction rib, the stirrup surrounds and is fixed on the construction rib to form a cage-shaped framework with a certain length in the axial direction, and the cage-shaped framework is sleeved on the steel strand as an integral component.
Preferably, the stirrup and the steel strand are not connected. The non-connection relation means that the two are not connected with each other by binding, clamping, welding or other intermediate auxiliary parts and intermediate connecting parts. Make the stirrup more fast convenient around establishing in flexible steel strand wires periphery, the internal tectonic frame (being the steel reinforcement cage) of pile is gone out in final shaping, improves production efficiency greatly.
For connecting steel strand wires and pile extension in order to make things convenient for, the at least one end of above-mentioned concrete pile body is equipped with the end plate, and the end plate is provided with a plurality of locking holes, and the steel strand wires pass through retaining member locking and in the locking hole, no relation of connection between structure muscle and the end plate makes at the in-process of tensile steel strand wires the structure muscle is not by stretch-draw.
In a further improvement, the stirrups can be fixed with end plates of the concrete pile body or connecting pieces arranged on the end plates. When the steel strand is tensioned, the stirrups of the deformed stirrup sections can also stretch synchronously, so that the end parts of the pile bodies are ensured to have stirrups with a certain density, and the mechanical property of the pile bodies is ensured
In a further improvement, the cage-shaped frame is provided with a section of deformed stirrup capable of extending in the axial direction at the part close to the end part of the concrete pile body, and the stirrup on the deformed stirrup section can be fixed with the end plate of the concrete pile body or a connecting piece arranged on the end plate. Therefore, the axial expansion of the deformed stirrup section is facilitated to be easier during tensioning.
Preferably, before the steel strand is tensioned, a first distance between two adjacent hoops of the deformed hoop section is smaller than a second distance between two adjacent hoops in other parts of the cage-shaped framework. When the steel strand is tensioned, the stirrups of the deformed stirrup sections are axially expanded together, so that the stirrup density around the whole steel strand is consistent as much as possible.
Preferably, the hoop of the deformed hoop section of the cage frame is not connected to the structural rib, and the hoop of the other part of the cage frame is fixed to the structural rib. The stirrup can be conveniently fixed and the axial expansion of the stirrup of the deformed stirrup section can be conveniently realized.
The above-mentioned construction muscle is the reinforcing bar of axial arrangement, and the reinforcing bar is six at least. Six bars are convenient to form a circular cage.
One or more cage-shaped frameworks sleeved on the steel strand. The cage-shaped framework can be sleeved on the steel strand by one section, or can be spliced by two sections which are respectively sleeved on the steel strand in the axial direction, and a plurality of cage-shaped frameworks are suitable for being adopted if the length of the concrete pile is very long.
In a further improvement, the first cross section caliber of the cage-shaped framework is larger than the second cross section caliber of the frame formed by the steel strands in a surrounding mode. The structure can not generate the force expanding outwards in the radial direction to the cage-shaped framework when the steel strand is tensioned, so that the cage-shaped framework can not deform, the direction of the straight line of the steel strand under the tensioning force can not be changed, and the mechanical property of the pile body can not be influenced.
Compared with the prior art, the pretensioning method centrifugal concrete pile has the advantages that: the concrete pile body is also internally provided with a stirrup and a construction bar, the stirrup surrounds and is fixed on the construction bar to form a cage-shaped framework with a certain length in the axial direction, and the cage-shaped framework is sleeved on the steel strand as an integral component. Adopt the steel reinforcement cage of this structure, need not the fixed stirrup of ligature on the steel strand wires, during the manufacturing, prepare cage-shaped framework with the seam welder earlier, mechanized preparation can be realized to cage-shaped framework, during the steel reinforcement cage preparation, only need with cage-shaped framework suit on the many steel strand wires that the axial was arranged can, effectively simplify the manufacturing method of steel reinforcement cage, improve production efficiency, the structure muscle in the cage-shaped framework of extra increase in addition can multiplicable concrete pile's intensity, further improve concrete pile's bending resistance, shear, tensile strength.
Drawings
FIG. 1 is a cross-sectional view of an embodiment of the present invention;
fig. 2 is an exploded view of an embodiment of the present invention;
fig. 3 is a cross-sectional view of an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments.
As shown in FIGS. 1 to 3, it is a preferred embodiment of the present invention.
A steel strand concrete pile comprises a concrete pile body 1 and a plurality of steel strands 2 arranged in the concrete pile body 1, wherein the steel strands 2 are arranged along the axial direction of the concrete pile body 1; at least one end of the concrete pile body 1 in the embodiment is provided with an end plate 3, the end plate 3 is provided with a plurality of locking holes 31, the steel strand 2 is locked in the locking holes 31 through a locking piece 4, and background patents can be referred to in the mode that the steel strand 3 is locked in the locking holes 31 through the locking piece 4.
Still be equipped with stirrup 7 and construction muscle 5 in the concrete pile body 1, there is not the relation of connection between construction muscle 5 and the end plate 3, and there is not the relation of connection to mean that construction muscle 5 is not fixed on end plate 3 (the mode of fixing on end plate 3 is like the pier head of construction muscle 5 tip sinks in the counter bore on end plate 3, or construction muscle 5 passes through locking part to be fixed on end plate 3) for it is not stretched to construct muscle 5 in the in-process of tensile steel strand wires 2, constructs muscle 5 for the reinforcing bar of axial arrangement, and the reinforcing bar is six at least. The stirrup 7 surrounds and is fixed on the construction bar 5 to form a cage-shaped framework 6 with a certain length in the axial direction, and the cage-shaped framework 6 is sleeved on the steel strand 2 as an integral component.
The stirrups 7 and the steel strands 2 are not connected. The non-connection relation means that the two are not connected with each other by binding, clamping, welding or other intermediate auxiliary parts and intermediate connecting parts.
The cage-shaped framework 6 is provided with a section of deformed stirrup section 61 capable of extending in the axial direction at the part close to the end part of the concrete pile body 1, and the stirrup 7 on the deformed stirrup section 61 can be fixed with the end plate 3 of the concrete pile body 1 or a connecting piece arranged on the end plate 3. Before the steel strand 2 is tensioned, the first spacing s1 between two adjacent hoops 7 of the deformed hoop section 61 is smaller than the second spacing s2 between two adjacent hoops 7 in other parts of the cage-shaped framework 8.
The stirrup 7 of the deformed stirrup section 61 of the cage-shaped framework 6 is not fixedly connected with the construction rib 5, and the stirrup 7 of other parts of the cage-shaped framework 6 is fixedly connected with the construction rib 5.
One or more cage-shaped frameworks 6 are sleeved on the steel strand 2. The cage frame 6 in this embodiment has only one
The first cross-sectional caliber D1 of the cage-shaped framework 6 is larger than the second cross-sectional caliber D2 of the framework enclosed by the steel strands 2.
Adopt the steel reinforcement cage of this structure, need not the fixed stirrup of ligature on the steel strand wires, during the manufacturing, prepare cage-shaped framework with the seam welder earlier, mechanized preparation can be realized to cage-shaped framework, during the steel reinforcement cage preparation, only need with cage-shaped framework suit on the many steel strand wires that the axial was arranged can, effectively simplify the manufacturing method of steel reinforcement cage, improve production efficiency, the structure muscle in the cage-shaped framework of extra increase in addition can multiplicable concrete pile's intensity, further improve concrete pile's bending resistance, shear, tensile strength.
The utility model provides a centrifugal concrete pile with steel strand wires can regard as the body of rod of wire pole to use, also can regard as the bracing piece on the ground among telecommunication basic station, the wind power generation system to use, still can regard as the supporter of other ground engineering, and application range and scene are extremely wide.
Claims (10)
1. A steel strand concrete pile comprises a concrete pile body (1) and a plurality of steel strands (2) arranged in the concrete pile body (1), wherein the steel strands (2) are axially arranged along the concrete pile body (1); the method is characterized in that: still be equipped with stirrup (7) and structure muscle (5) in concrete pile body (1), stirrup (7) encircle and fix constitute cage frame (6) that have certain length in the axial on structure muscle (5), cage frame (6) are arranged in as the monolithic member cover on steel strand wires (2).
2. The steel strand concrete pile of claim 1, wherein: and the stirrups (7) and the steel strands (2) are not connected.
3. The steel strand concrete pile of claim 1, wherein: concrete pile body (1) one end at least is equipped with end plate (3), and end plate (3) are provided with a plurality of locking holes (31), steel strand wires (2) are in through retaining member (4) locking in locking hole (31), no relation of connection between structure muscle (5) and end plate (3) makes at the in-process of tensile steel strand wires (2) structure muscle (5) are not by stretch-draw.
4. The steel strand concrete pile of claim 3, wherein: the stirrups (7) can be fixed with the end plates (3) of the concrete pile body (1) or connecting pieces arranged on the end plates (3).
5. The steel strand concrete pile of claim 3, wherein: the cage-shaped framework (6) is close to the part of the end part of the concrete pile body (1) and is provided with a section of deformed stirrup section (61) capable of extending in the axial direction, and stirrups (7) on the deformed stirrup section (61) can be fixed with an end plate (3) of the concrete pile body (1) or a connecting piece arranged on the end plate (3).
6. The steel strand concrete pile of claim 5, wherein: before the steel strand (2) is tensioned, a first distance (s1) between two adjacent hoops (7) of the deformation hoop section (61) is smaller than a second distance (s2) between two adjacent hoops (7) in other parts of the cage-shaped framework (8).
7. The steel strand concrete pile of claim 5, wherein: the stirrup (7) of the deformed stirrup section (61) of the cage-shaped framework (6) is not connected and fixed with the construction rib (5), and the stirrups (7) of other parts of the cage-shaped framework (6) are fixed with the construction rib (5).
8. The steel strand concrete pile of claim 1, wherein: the construction bars (5) are axially arranged steel bars, and the number of the steel bars is at least six.
9. The steel strand concrete pile of claim 1, wherein: one or more cage-shaped frameworks (6) are sleeved on the steel strand (2).
10. The steel strand concrete pile of claim 1, wherein: the first cross-sectional caliber (D1) of the cage-shaped framework (6) is larger than the second cross-sectional caliber (D2) of a frame enclosed by the steel strands (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920827718.6U CN211143061U (en) | 2019-05-31 | 2019-05-31 | Steel strand concrete pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920827718.6U CN211143061U (en) | 2019-05-31 | 2019-05-31 | Steel strand concrete pile |
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| CN211143061U true CN211143061U (en) | 2020-07-31 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110453681A (en) * | 2019-05-31 | 2019-11-15 | 俞晓东 | Steel strand wires concrete-pile and its manufacturing method |
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2019
- 2019-05-31 CN CN201920827718.6U patent/CN211143061U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110453681A (en) * | 2019-05-31 | 2019-11-15 | 俞晓东 | Steel strand wires concrete-pile and its manufacturing method |
| CN110453681B (en) * | 2019-05-31 | 2023-12-22 | 俞晓东 | Steel strand concrete pile and manufacturing method thereof |
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