CN109958232B - Prestressed anchorage device fastening device and use method thereof - Google Patents
Prestressed anchorage device fastening device and use method thereof Download PDFInfo
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- CN109958232B CN109958232B CN201910178774.6A CN201910178774A CN109958232B CN 109958232 B CN109958232 B CN 109958232B CN 201910178774 A CN201910178774 A CN 201910178774A CN 109958232 B CN109958232 B CN 109958232B
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- jack
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/08—Members specially adapted to be used in prestressed constructions
- E04C5/12—Anchoring devices
- E04C5/122—Anchoring devices the tensile members are anchored by wedge-action
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/12—Mounting of reinforcing inserts; Prestressing
- E04G21/121—Construction of stressing jacks
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- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Reinforcement Elements For Buildings (AREA)
Abstract
The invention provides a prestressed anchor fastening device and a using method thereof, wherein the prestressed anchor fastening device comprises an anchor, a jack support and a first plate body which are sequentially connected, wherein a first wedge hole with two through ends is formed in the anchor, a plurality of first clamping pieces are arranged in the first wedge hole, and fastening pieces are fixed on the end surfaces of the first clamping pieces to enable the first clamping pieces to form a whole; the jack is internally hollow to form a channel for the prestressed reinforcement to penetrate through, one end of the jack is abutted against the anchorage device, the other end of the jack is fixed on the jack support, the jack support is connected with the first plate body, the first plate body is supported on a supporting surface, and the other end of the prestressed reinforcement penetrates through the first plate body and then is fastened with the other anchorage device; and starting the jack, and tensioning the prestressed reinforcement through the pushing of the jack. The invention has simple structure, convenient operation and good prestressed reinforcement tensioning effect.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to a pre-stressed anchor fastening device and a using method thereof.
Background
The prestressed tension member is one of the commonly used techniques in building engineering, and the application of prestress to the member can obviously improve the working performances of the member, such as strength, rigidity, crack resistance and the like, increase the durability of the structure, save steel and reduce self weight.
For the existing components such as concrete beams and the like with small section size and small pre-tensioning quantity, when a common clip-type anchorage is used for tensioning concrete prestressed reinforcements and a prestressed anchor rod tensioning jack, on one hand, a supporting seat is not provided, the prestressed tensioning jack, the supporting seat and the reinforcements are difficult to ensure on the same horizontal line when the reinforcements are tensioned, when the prestress is increased, the phenomena of gravity center deviation and support warping are easy to generate, the prestress cannot meet the requirements, the tensioning effect is not ideal, and the safety is not high; on the other hand, when the applied prestress meets the requirement, the anchor between the support and the backing plate needs to fasten the steel bars by the clamping pieces to prevent the stretched steel bars from retracting, the clamping pieces are positioned at the center of the pre-pulling holes of the backing plate during fastening, the clamping pieces are not easy to operate and enter the anchor for fastening, and the three clamping pieces are mutually independent, have different entering depths, have large retractility and have larger tension loss.
Disclosure of Invention
In view of the above circumstances, the present invention provides a prestressed anchorage fastening device with simple structure, convenient assembly and good tensioning effect and a method for using the same, which solves the technical problems of unsatisfactory tensioning effect, low safety and troublesome operation of the existing prestressed tensioning member.
In order to achieve the purpose, the invention adopts the technical scheme that: the utility model provides a prestressed anchorage utensil fastener for prestressed reinforcement's fastening, fastener includes the ground tackle, jack support and the first plate body of connecting in proper order, wherein:
a first wedge hole with two through ends is formed in the anchor device, a plurality of first clamping pieces are arranged in the first wedge hole, the outer surfaces of the first clamping pieces are matched with the first wedge hole, a first channel through which one end of the prestressed steel bar penetrates is formed by surrounding the inner surfaces of the first clamping pieces, and fasteners are fixed on the end surfaces of the first clamping pieces to enable the first clamping pieces to form a whole;
the inner part of the jack is hollow to form a channel for the penetration of the prestressed reinforcement, one end of the jack is abutted against the anchorage and applies ejection force to the anchorage, the other end of the jack is fixed on the jack support, the jack support is connected with the first plate body, and a through hole for the penetration of the prestressed reinforcement is formed in the first plate body;
start the jack, the ground tackle receives the ejection force orientation of jack is kept away from the direction of first plate body removes, drives first clamping piece orientation is kept away from the direction of first plate body removes, first clamping piece wedges first wedge is downthehole, and is adjacent clearance between the first clamping piece is reduced in order to press from both sides tightly prestressing steel, just prestressing steel's the other end passes through the through-hole after-fixing, prestressing steel passes through the ejection of jack and produce the stretch-draw.
In the embodiment of the invention, the end part of each first clamping piece is respectively provided with an ear plate in a protruding way, and the ear plate is provided with an ear hole;
the fastener includes the mounting plate, be formed with first perforation on the mounting plate respectively, first fenestrate position with the earhole position corresponds, first clamping piece with fastening component passes through the bolt the earhole reaches first perforation is fixed with the nut.
In the embodiment of the invention, the jack support comprises a second plate body, the jack is fixed on the second plate body, a second through hole for the prestressed reinforcement to penetrate through is formed in the second plate body, and a supporting leg extending towards the first plate body is fixed on the second plate body;
the jack support and the first plate body are fixedly arranged in the supporting leg hole through the supporting leg insertion.
In the embodiment of the invention, the supporting leg hole is a blind hole.
In the embodiment of the invention, the second perforated hole of the second plate body is provided with a corrugated pipe, and the end part of the corrugated pipe penetrates through the through hole of the first plate body.
In the embodiment of the invention, the through holes are provided with a plurality of groups, the number of the through holes in each group is not unique, and the adjacent through holes are communicated.
The invention also provides a use method of the pre-stressed anchor fastening device, which comprises the following steps:
s1: penetrating the prestressed reinforcement through two oppositely arranged templates, wherein two ends of the prestressed reinforcement penetrate through the two templates;
s2: mounting the prestressed anchor fastening device at one end of the prestressed reinforcement, and fixing the other end of the prestressed reinforcement on the template adjacent to the prestressed reinforcement;
s3: the jack is started, the ground tackle receives the ejecting force orientation of jack is kept away from the direction of first plate body removes, drives first clamping piece orientation is kept away from the direction of first plate body removes, first clamping piece wedges first wedge is downthehole, and is adjacent clearance between the first clamping piece is reduced in order to press from both sides tightly prestressing steel realizes the stretch-draw.
In the embodiment of the invention, the prestressed anchorage device fastening device is arranged on the opposite outer side of the template.
In the embodiment of the invention, the prestressed reinforcement is a concrete beam reinforcement, and the two templates are concrete beam templates.
Due to the adoption of the technical scheme, the invention has the following beneficial effects:
(1) the tensioning device realizes the tensioning of the prestressed reinforcement through the fastening of the two ends of the prestressed reinforcement and the pushing action of the jack, and has simple structure and convenient operation; the fastener can enable a plurality of first clamping pieces to be connected to form an integral body to be synchronously embedded into the first wedge holes of the anchorage device, so that the depths of the first clamping pieces entering the first wedge holes are the same, and the anchorage device and the first clamping pieces move mutually through the interaction between the first clamping pieces and the pushing of the jack so as to clamp the prestressed reinforcement.
(2) The jack, the jack support and the first plate body are all provided with through holes for the penetration of the prestressed reinforcement, the axes of the jack, the second through holes in the jack support and the leg holes in the first plate body are positioned on the same straight line through the mutual connection among the jack, the jack support and the first plate body, and the tensioning effect of the prestressed reinforcement is improved.
Drawings
FIG. 1 is a schematic structural view of a prestressed anchorage device of the present invention.
FIG. 2 is a schematic view of the anchor of the present invention.
Fig. 3 is a schematic structural view of a first clip of the present invention.
FIG. 4 is a schematic structural view of the fastener of the present invention.
Fig. 5 is a schematic structural view of the jack of the present invention.
Fig. 6 is a schematic structural view of the jack stand of the present invention.
Fig. 7 is a schematic structural diagram of the first plate of the present invention.
The correspondence of reference numerals to components is as follows:
prestressed reinforcement 1; an anchorage device 2; a first clip piece 21; an ear plate 211; an ear hole 212; a fastener 22; a fastening plate 221; a first through hole 222; a jack 3; a jack support 4; a second plate body 41; a second perforation 410; legs 42; a bellows 43; a first plate body 5; a through hole 50; a leg hole 51; an anchor body 6; a third plate 7.
Detailed Description
To facilitate an understanding of the present invention, the following description is made in conjunction with the accompanying drawings and examples.
Referring to fig. 1, the present invention provides a prestressed anchor fastening device for fastening a prestressed reinforcement 1, the fastening device includes an anchor 2, a jack 3, a jack support 4 and a first plate 5, which are connected in sequence, wherein:
a first wedge hole with two through ends is formed in the anchorage device 2, a plurality of first clamping pieces 21 are arranged in the first wedge hole, the outer surfaces of the plurality of first clamping pieces 21 are matched with the first wedge hole, a first channel through which one end of the prestressed reinforcement 1 penetrates is formed by surrounding the inner surfaces of the plurality of first clamping pieces 21, and a fastener 22 is fixed on the end surface of the plurality of first clamping pieces 21 so that the plurality of first clamping pieces 21 form a whole;
a channel for the penetration of the prestressed reinforcement 1 is formed in the hollow part of the jack 3, one end of the jack 3 abuts against the anchorage device 2 and applies a pushing force to the anchorage device 2, the other end of the jack 3 is fixed on the jack support 4, the jack support 4 is connected with the first plate body 5, and a through hole 50 for the penetration of the prestressed reinforcement 1 is formed in the first plate body 5;
start jack 3, ground tackle 2 receives jack 3's ejection force orientation is kept away from the direction of first plate body 5 removes, first clamping piece 21 wedges in the first wedge hole, it is adjacent clearance between the first clamping piece 21 reduces in order to press from both sides tightly prestressing steel 1, just prestressing steel 1's the other end passes through 50 after-fixing of through-hole, prestressing steel 1 passes through jack 3's ejection and production stretch-draw.
In the embodiment of the present invention, the number of the first clamping pieces 21 is three, the end of each first clamping piece 21 is respectively provided with an ear plate 211 in a protruding manner, and an ear hole 212 is formed on each ear plate 211; the lug plate 211 is arranged at the end of the first clamping piece 21 in a protruding manner, so that the first clamping piece 21 is not affected to penetrate through the first wedge hole, and meanwhile, the lug plate 211 is a stress point, and the lug plate 211 is knocked to enable the first clamping piece 21 to smoothly enter the first wedge hole.
The fastening member 22 includes fastening plates 221, first through holes 222 are respectively formed on the fastening plates 221, the positions of the ear holes 212 correspond to the positions of the first through holes 222, and the first clip 21 and the fastening member 22 are fixed with nuts by bolts passing through the ear holes 212 and the first through holes 222; through the bolt fastening the mounting plate 221 reaches the otic placode 211 of first clamping piece 21 for it is a plurality of first clamping piece 21 can imbed in step first wedge hole, the interact improves right the fastening effect of prestressing steel 1.
In the embodiment of the present invention, the fastening plate 221 is V-shaped, the number of the first clamping pieces 21 is three, three of the first clamping pieces 21 are respectively provided with one of the ear plates 211 in a protruding manner, and the fastening plate 221 is provided with three of the first through holes 222.
In the embodiment of the present invention, the jack support 4 includes a second plate 41, the jack 3 is fixed on the second plate 41, a second through hole 410 for penetrating the prestressed reinforcement bar 1 is formed in the second plate 41, and a support leg 42 extending toward the first plate 5 is fixed on the second plate 41.
The first plate body 5 is provided with a leg hole 51 for the leg 42 to be inserted and fixed, and the jack support 4 and the first plate body 5 are fixed by inserting the leg 42 into the leg hole 51; preferably, the leg hole 51 is a blind hole.
In the embodiment of the present invention, the number of the legs 42 is four, four legs 51 are surrounded to form a rectangular space, the second through holes 410 are located in the middle of the four legs 42, the number of the leg holes 51 is an even number which is not less than four, and the leg holes 51 are arranged along the height direction of the first plate 5.
Preferably, a corrugated tube 43 is disposed at the second through hole 410 of the second plate body 41, one end of the corrugated tube 43 is fixed to the second plate body 41, and the other end of the corrugated tube 43 is inserted into the through hole 50 of the first plate body 5.
Preferably, the through holes 50 have a plurality of groups, the number of the through holes 50 in each group is not unique, and adjacent through holes 50 are communicated with each other. Every group the position that prestressing steel 1 can be adjusted as required to the quantity of through-hole 50 is not only, can be convenient for the member through setting up multiunit through-hole 50 and stretch-draw many prestressing steel 1 about or from top to bottom simultaneously.
In the embodiment of the invention, the other anchor comprises an anchor body 6, a second wedge hole is formed in the anchor body 6, a plurality of first clamping pieces are arranged in the second wedge hole, the outer surfaces of the plurality of first clamping pieces are adapted to the second wedge hole, a second channel for clamping the other end of the prestressed reinforcement 1 is formed by enclosing the inner surfaces of the plurality of first clamping pieces 21, and the other end of the prestressed reinforcement 1 is fastened with the anchor body 6; in the embodiment of the invention, a third plate body 7 is arranged between the anchor body 6 and the first plate body 5, the third plate body 7 has the same structure as the first plate body 5, and the other end of the prestressed reinforcement 1 penetrates through a through hole in the third plate body 7 and then is fixed with the anchor body 6.
The structure of the prestressed anchorage device fastening device of the present invention is described above specifically, and the use method thereof is described below, including the steps of:
s1: penetrating the prestressed reinforcement through two oppositely arranged templates, wherein two ends of the prestressed reinforcement penetrate through the two templates; in the embodiment of the invention, the prestressed reinforcement is a concrete beam reinforcement, and the two templates are concrete beam templates;
s2: mounting the prestressed anchor fastening device at one end of the prestressed reinforcement, and fixing the other end of the prestressed reinforcement on the template adjacent to the prestressed reinforcement; in the embodiment of the invention, the prestressed anchorage device fastening device is arranged on the opposite outer side of the template;
s3: the jack is started, the ground tackle receives the ejecting force orientation of jack is kept away from the direction of first plate body removes, drives first clamping piece orientation is kept away from the direction of first plate body removes, first clamping piece wedges first wedge is downthehole, and is adjacent clearance between the first clamping piece is reduced in order to press from both sides tightly prestressing steel realizes the stretch-draw.
While the present invention has been described in detail and with reference to the accompanying drawings and examples, it will be apparent to one skilled in the art that various changes and modifications can be made therein. Therefore, certain details of the embodiments are not to be interpreted as limiting, and the scope of the invention is to be determined by the appended claims.
Claims (8)
1. A prestressed anchorage device fastening device is used for fastening prestressed reinforcement, and is characterized in that the fastening device comprises an anchorage device, a jack support and a first plate body which are connected in sequence, wherein:
a first wedge hole with two through ends is formed in the anchor device, a plurality of first clamping pieces are arranged in the first wedge hole, the outer surfaces of the first clamping pieces are matched with the first wedge hole, a first channel through which one end of the prestressed steel bar penetrates is formed by surrounding the inner surfaces of the first clamping pieces, and fasteners are fixed on the end surfaces of the first clamping pieces to enable the first clamping pieces to form a whole;
the inner part of the jack is hollow to form a channel for the penetration of the prestressed reinforcement, one end of the jack is abutted against the anchorage and applies ejection force to the anchorage, the other end of the jack is fixed on the jack support, the jack support is connected with the first plate body, and a through hole for the penetration of the prestressed reinforcement is formed in the first plate body;
the jack is started, the anchorage device moves towards the direction far away from the first plate body under the pushing force of the jack, the first clamping piece is driven to move towards the direction far away from the first plate body, the first clamping piece is wedged into the first wedge hole, the gap between the adjacent first clamping pieces is reduced to clamp the prestressed reinforcement, the other end of the prestressed reinforcement penetrates through the through hole and then is fixed, and the prestressed reinforcement is tensioned through the pushing of the jack;
the end part of each first clamping piece is respectively provided with an ear plate in a protruding way, and an ear hole is formed on each ear plate;
the fastener includes the mounting plate, be formed with first perforation on the mounting plate respectively, first fenestrate position with the earhole position corresponds, first clamping piece with fastening component passes through the bolt the earhole reaches first perforation is fixed with the nut.
2. The prestressed anchorage fastening device of claim 1, wherein the jack support includes a second plate, the jack is fixed to the second plate, the second plate is provided with a second through hole for the prestressed reinforcement to pass through, and the second plate is fixed with a leg extending toward the first plate;
the jack support and the first plate body are fixedly arranged in the supporting leg hole through the supporting leg insertion.
3. The prestressed anchorage fastening device as claimed in claim 2, wherein said leg hole is a blind hole.
4. The prestressed anchor fastening device as claimed in claim 2, wherein a bellows is provided at the second through hole of said second plate, and an end of said bellows is inserted into said through hole of said first plate.
5. The prestressed anchorage fastening device as claimed in claim 1, wherein said through holes have a plurality of groups, and the number of said through holes in each group is not unique, and adjacent through holes are communicated with each other.
6. A method of using the pre-stressed anchor fastening device according to any one of claims 1 to 5, comprising the steps of:
s1: penetrating the prestressed reinforcement through two oppositely arranged templates, wherein two ends of the prestressed reinforcement penetrate through the two templates;
s2: mounting the prestressed anchor fastening device at one end of the prestressed reinforcement, and fixing the other end of the prestressed reinforcement on the template adjacent to the prestressed reinforcement;
s3: the jack is started, the ground tackle receives the ejecting force orientation of jack is kept away from the direction of first plate body removes, drives first clamping piece orientation is kept away from the direction of first plate body removes, first clamping piece wedges first wedge is downthehole, and is adjacent clearance between the first clamping piece is reduced in order to press from both sides tightly prestressing steel realizes the stretch-draw.
7. The method of using the prestressed anchorage fastening device as claimed in claim 6, wherein said prestressed anchorage fastening device is provided on opposite outer sides of said formwork.
8. The method of using the prestressed anchorage fastening device as claimed in claim 6, wherein the prestressed reinforcement is a concrete beam reinforcement and the two forms are concrete beam forms.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910178774.6A CN109958232B (en) | 2019-03-11 | 2019-03-11 | Prestressed anchorage device fastening device and use method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910178774.6A CN109958232B (en) | 2019-03-11 | 2019-03-11 | Prestressed anchorage device fastening device and use method thereof |
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| CN109958232A CN109958232A (en) | 2019-07-02 |
| CN109958232B true CN109958232B (en) | 2021-05-25 |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110258931A (en) * | 2019-07-11 | 2019-09-20 | 兰州恒驰预应力科技有限公司 | A kind of clipping anchor of prestressing force |
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