CN210395861U - Opening anchorage device for cutting off and anchoring prestressed tendon - Google Patents
Opening anchorage device for cutting off and anchoring prestressed tendon Download PDFInfo
- Publication number
- CN210395861U CN210395861U CN201920691088.4U CN201920691088U CN210395861U CN 210395861 U CN210395861 U CN 210395861U CN 201920691088 U CN201920691088 U CN 201920691088U CN 210395861 U CN210395861 U CN 210395861U
- Authority
- CN
- China
- Prior art keywords
- clamping piece
- prestressed
- diameter
- anchor
- anchorage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Reinforcement Elements For Buildings (AREA)
Abstract
An opening anchorage device for cutting off and anchoring prestressed tendons comprises an anchorage device main body, a clamping piece and a fastening clamp; the anchor device main body is in a short column shape and is formed by splicing three anchor device unit blocks; the horizontal section of the anchorage unit block is in a fan shape; vertical strip-shaped grooves are respectively formed in the vertical side surfaces of the two sides of the anchor main body unit; the horizontal section of the strip-shaped groove is semicircular, and the diameter of the semicircle is constant from top to bottom and then gradually increased; the bar-shaped grooves on two adjacent vertical side surfaces are correspondingly spliced to form a bar-penetrating pore channel; the tendon-penetrating duct is composed of an upper equal-diameter duct section and a lower variable-diameter duct section; the shape of the clamping piece is matched with that of the variable-diameter pore passage section, and the clamping piece is inserted into the variable-diameter pore passage section; the fastening clamp is annular and hooped outside the anchor device body. The utility model provides a thereby traditional prestressing tendons ground tackle makes the prestressing tendons skid easily to the insecure messenger of prestressing tendons centre gripping, causes the too big technical problem of prestressing loss.
Description
Technical Field
The utility model belongs to the building engineering construction field, especially a prestressed tendons cuts opening ground tackle of anchor.
Background
Because some building transformation projects need to cut off the original building prestressed floor slab, and in order to not influence the safe use function requirement of the original structure, the existing prestressed tendons need to be cut off and anchored. If the prestressed tendons are directly cut off, the loss of the prestress is overlarge, and the original building has larger potential safety hazard. At present, domestic relevant specifications and regulations do not meet the specific requirements of the existing prestressed tendon truncation and anchoring, the construction method of the prestressed tendon truncation and anchoring and the use of the anchorage are relatively random, and the following modes are mainly adopted through research and development:
(1) the original prestressed tendons are directly cut off and then tensioned and anchored again, and the prestressed tendons lose the effect;
(2) the common fixture is used for reinforcement, the fixture is not firm, and the prestressed tendons slip, so that the loss of the prestress is overlarge.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a prestressing tendons cuts open ground tackle of anchor solves traditional prestressing tendons ground tackle thereby insecure messenger's prestressing tendons of prestressing tendons centre gripping skids easily, causes the too big technical problem of prestressing loss.
In order to achieve the above purpose, the utility model adopts the following technical scheme.
An opening anchorage device for cutting off and anchoring prestressed tendons is anchored on the prestressed tendons at the end part of a prestressed component; the open anchor comprises an anchor body, a clamping piece and a fastening clamp; the anchor device main body is in a short column shape and is formed by splicing three anchor device unit blocks; wherein, the horizontal section of each anchorage unit block is in a fan shape; vertical strip-shaped grooves are respectively formed in the vertical side surfaces of the two sides of the anchor main body unit; the horizontal section of the strip-shaped groove is semicircular, and the diameter of the semicircle is constant from top to bottom and then gradually increased; the bar-shaped grooves on two adjacent vertical side surfaces are correspondingly spliced to form a bar-penetrating pore channel; the tendon-penetrating pore passage consists of an equal-diameter pore passage section at the upper part and a variable-diameter pore passage section at the lower part; the shape of the clamping piece is matched with that of the variable-diameter pore passage section, and the clamping piece is inserted into the variable-diameter pore passage section; the clamping piece is clamped on the prestressed tendon, and the outer side wall of the clamping piece is tightly attached to the side wall of the variable-diameter pore passage section; the fastening clamp is annular and hooped on the outer side of the anchor device main body; the fastening clamp comprises two annular hoop units which are detachably connected through bolts.
Preferably, the prestressed member is a prestressed plate or a prestressed beam.
Preferably, a backing plate is padded between the open anchorage and the end part of the prestressed component; the base plate is bonded on the end face of the prestressed component through bonding glue, and a strip-shaped notch penetrating through the prestressed tendon is formed in the base plate.
Preferably, the horizontal section of the clamping piece is annular and is formed by splicing at least two clamping piece units; the outer diameter of the clamping piece is gradually increased from top to bottom, and the inner diameter of the clamping piece is adapted to the diameter of the prestressed tendon; and a clamping groove meshed with the prestressed tendon is arranged on the inner side wall of the clamping piece.
Preferably, both ends of the annular hoop unit are horizontally bent outwards to form flanges; the turnup is provided with a through hole for penetrating a bolt; the bolts correspondingly penetrate through the through holes in the two annular hoop units, and the two annular hoop units are correspondingly detachably connected.
Compared with the prior art, the utility model has the following characteristics and beneficial effect.
1. The utility model discloses an opening ground tackle that prestressing tendons cut anchor has not only been solved to the anchor problem of cutting of having prestressing tendons in the transformation engineering, makes original prestressing force among the prestressing tendons not lose moreover, easy operation, and construction convenience has guaranteed the safe in utilization of building.
2. The utility model relates to a before cutting original prestressing tendons, fix the backing plate on prestressing force component's terminal surface earlier, install sliced ground tackle unit piece and clamping piece on prestressing tendons again, utilize fastening fixture to ground tackle main part locking, then squeeze into the clamping piece, cut off prestressing tendons again after reaching the effect of anchor, this prestressing tendons's opening ground tackle has not only been solved and has been transformed the engineering and to having had the anchor problem of cutting of prestressing tendons, and make original prestressing force not lose moreover, and is simple in operation, and convenient for construction has satisfied the structure safety requirement.
3. The utility model discloses to wear the muscle pore design to become to constitute by the equal diameter pore section and variable diameter pore section, pass the equal diameter pore and become the diameter pore after the prestressing tendons, exert prestressing force to the prestressing tendons, reach the design specified value after, lay the clamping piece in becoming the diameter pore and tighten, the self-locking power that utilizes the wedge production of pore reaches the effect of auto-lock, not only satisfy and cut the requirement of anchor, the field usage simple to operate, the efficiency of construction also can greatly improve.
4. The utility model discloses to the ground tackle of three prestressing tendons, adopt three patterns, guaranteed the anchor in the time of to original three prestressing tendons, keeping prestressing force loss-free to under the condition that does not cut, satisfy the operation requirement in the prestressing tendon outside the complete cover of ground tackle.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings.
FIG. 1 is a cross-sectional view of the open anchor of the present invention.
Fig. 2 is a schematic structural view of the anchor unit block of the present invention.
Fig. 3 is a schematic structural view of the fastening clip of the present invention.
Fig. 4 is a schematic plan view of the annular hoop unit of the present invention.
Fig. 5 is a schematic structural diagram of the middle cushion plate of the present invention.
Fig. 6 is a schematic structural view of the middle opening anchor anchored on the tendon at the end of the prestressed member.
Fig. 7 is a schematic view of a vertical section structure of the middle anchor body of the present invention.
Reference numerals: 1-prestressed component, 2-prestressed tendon, 3-anchor main body, 3.1-anchor unit block, 4-clamping piece, 5-fastening clamp, 5.1-annular hoop unit, 5.1.1-flanging, 5.2-bolt, 6-strip groove, 7-tendon-passing pore channel, 7.1-equal diameter pore channel segment, 7.2-variable diameter pore channel segment, 8-backing plate, 9-strip notch, 10-clamping groove, 11-through hole and 12-adhesive.
Detailed Description
As shown in fig. 1-7, the prestressed tendon cut-off anchored open anchorage is anchored on the prestressed tendon 2 at the end of the prestressed member 1; the open anchor comprises an anchor body 3, a clamping piece 4 and a fastening clamp 5; the method is characterized in that: the anchor device main body 3 is in a short column shape and is formed by splicing three anchor device unit blocks 3.1; wherein, the horizontal section of each anchorage unit block 3.1 is in a fan shape; vertical strip-shaped grooves 6 are respectively formed in the vertical side surfaces of two sides of the anchorage unit block 3.1; the horizontal section of the strip-shaped groove 6 is semicircular, and the diameter of the semicircle is constant from top to bottom and then gradually increased; the strip-shaped grooves 6 on two adjacent vertical side surfaces are correspondingly spliced to form a bar penetrating channel 7; the tendon-penetrating pore canal 7 consists of an upper equal-diameter pore canal section 7.1 and a lower variable-diameter pore canal section 7.2; the shape of the clamping piece 4 is matched with that of the diameter-variable pore passage section 7.2, and the clamping piece is inserted into the diameter-variable pore passage section 7.2; the clamping piece 4 is clamped on the prestressed tendon 2, and the outer side wall of the clamping piece 4 is tightly attached to the side wall of the variable-diameter pore passage section 7.2; the fastening clamp 5 is annular and hooped outside the anchor device main body 3; the fastening clamp 5 comprises two annular hoop units 5.1, and the two annular hoop units 5.1 are detachably connected through bolts 5.2.
In this embodiment, the prestressed member 1 is a prestressed plate or a prestressed beam.
In this embodiment, the diameter of the cross section of the equal-diameter pore passage section 7.1 is adapted to the diameter of the prestressed tendon 2 to be penetrated; the diameter of the inner side section of the variable-diameter pore canal section 7.2 is equal to the diameter of the section of the equal-diameter pore canal section 7.1.
In the embodiment, a backing plate 8 is padded between the opening anchorage device and the end part of the prestressed component 1; the backing plate 8 is bonded on the end face of the prestressed component 1 through bonding glue 12, and a strip-shaped notch 9 penetrating through the prestressed tendon 2 is formed in the backing plate 8.
In this embodiment, the strip-shaped notch 9 is vertically formed, and the opening of the strip-shaped notch 9 faces downwards; the prestressed tendon 2 correspondingly passes through the strip-shaped notch 9, and the position of the prestressed tendon 2 can be adjusted up and down.
In this embodiment, the horizontal section of the clip 4 is annular and is formed by splicing at least two clip units; the outer diameter of the clamping piece 4 is gradually increased from top to bottom, and the inner diameter of the clamping piece 4 is adapted to the diameter of the prestressed tendon 2; and a clamping groove 10 meshed with the prestressed tendon 2 is arranged on the inner side wall of the clamping piece 4.
In this embodiment, both ends of the annular hoop unit 5.1 are bent horizontally outwards to form flanges 5.1.1; a through hole 11 for penetrating the bolt 5.2 is formed on the flanging 5.1.1; the bolts 5.2 correspondingly penetrate through the through holes 11 in the two annular hoop units 5.1, and the two annular hoop units 5.1 are correspondingly detachably connected.
When in use: marking the position of a hole on a prestressed member 1 according to design requirements, manually cutting part of concrete, cleaning a protective sleeve and oil stains on the surface of a prestressed rib 2, sleeving a backing plate 8 on the prestressed rib 2 from top to bottom, leveling the rough surface of the cut prestressed member 1 by using adhesive 12, firmly bonding the backing plate 8, sleeving an open anchor on the prestressed rib 2 and enabling the open anchor to be tightly attached to the backing plate 8, installing a fastening clamp 5, screwing two bolts 5.2 firstly after the two bolts 5.2 are arranged, and only leaving a space for placing a clamping piece 4 in an anchor cup of an anchor main body 3; then, the clamping piece 4 is placed into the anchor cup and the iron hammer is used for beating the clamping piece 4, so that the clamping piece 4 is extruded into the variable-diameter pore passage section 7.2 of the anchor device main body 3, and at the moment, the open anchor device is beaten by the iron hammer while the bolt 5.2 is screwed down; indicating that the pre-stress of the anchoring system has been established when the bolt 5.2 can no longer be tightened; when the prestressed reinforcing steel 2 is cut off, the prestressed reinforcing steel 2 is cut off at intervals symmetrically, so that the dispersed transmission of prestress in batches is facilitated, and the safe cutting off of the prestressed reinforcing steel 2 can be ensured; before the prestressed reinforcement 2 is cut off, the fastening degree of the bolt 5.2 of the open anchorage device must be repeatedly checked to check whether the nut is loosened, if so, the nut should be immediately screwed, and the prestressed reinforcement 2 can be cut off only when the fastening force meets the requirement.
The above embodiments are not exhaustive of the specific embodiments, and other embodiments are possible, and the above embodiments are intended to illustrate, but not limit the scope of the present invention, and all applications coming from the simple changes of the present invention fall within the scope of the present invention.
Claims (5)
1. An opening anchorage device for cutting off and anchoring a prestressed tendon is anchored on the prestressed tendon (2) at the end part of a prestressed member (1); the open anchor comprises an anchor body (3), a clamping piece (4) and a fastening clamp (5); the method is characterized in that: the anchor device main body (3) is in a short column shape and is formed by splicing three anchor device unit blocks (3.1); wherein the horizontal section of each anchorage unit block (3.1) is in a sector shape; vertical strip-shaped grooves (6) are respectively formed in the vertical side surfaces of two sides of the anchor unit block (3.1); the horizontal section of the strip-shaped groove (6) is semicircular, and the diameter of the semicircle is constant from top to bottom and then gradually increased; the strip-shaped grooves (6) on two adjacent vertical side surfaces are correspondingly spliced to form a bar penetrating pore channel (7); the tendon-penetrating pore canal (7) consists of an upper equal-diameter pore canal section (7.1) and a lower variable-diameter pore canal section (7.2); the shape of the clamping piece (4) is adapted to the shape of the variable-diameter pore passage section (7.2), and the clamping piece is inserted into the variable-diameter pore passage section (7.2); the clamping piece (4) is clamped on the prestressed tendon (2), and the outer side wall of the clamping piece (4) is tightly attached to the side wall of the variable-diameter pore passage section (7.2); the fastening clamp (5) is annular and hooped outside the anchor device main body (3); the fastening clamp (5) comprises two annular hoop units (5.1), and the two annular hoop units (5.1) are detachably connected through bolts (5.2).
2. The open anchorage of claim 1, wherein: the prestressed component (1) is a prestressed plate or a prestressed beam.
3. The open anchorage of claim 1, wherein: a backing plate (8) is padded between the opening anchorage and the end part of the prestressed component (1); the base plate (8) is bonded on the end face of the prestressed component (1) through bonding glue (12), and a strip-shaped notch (9) penetrating through the prestressed tendon (2) is formed in the base plate (8).
4. The open anchorage of claim 1, wherein: the horizontal section of the clamping piece (4) is annular and is formed by splicing at least two clamping piece units; the outer diameter of the clamping piece (4) is gradually increased from top to bottom, and the inner diameter of the clamping piece (4) is adapted to the diameter of the prestressed tendon (2); and a clamping groove (10) meshed with the prestressed tendon (2) is arranged on the inner side wall of the clamping piece (4).
5. The open anchorage of claim 1, wherein: both ends of the annular hoop unit (5.1) are horizontally bent outwards to form flanges (5.1.1); a through hole (11) for penetrating the bolt (5.2) is formed on the flanging (5.1.1); the bolts (5.2) correspondingly penetrate through the through holes (11) in the two annular hoop units (5.1) to correspondingly detachably connect the two annular hoop units (5.1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920691088.4U CN210395861U (en) | 2019-05-14 | 2019-05-14 | Opening anchorage device for cutting off and anchoring prestressed tendon |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920691088.4U CN210395861U (en) | 2019-05-14 | 2019-05-14 | Opening anchorage device for cutting off and anchoring prestressed tendon |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210395861U true CN210395861U (en) | 2020-04-24 |
Family
ID=70345643
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920691088.4U Active CN210395861U (en) | 2019-05-14 | 2019-05-14 | Opening anchorage device for cutting off and anchoring prestressed tendon |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210395861U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113565265A (en) * | 2021-07-28 | 2021-10-29 | 安徽恒聚精密机械有限公司 | High-strength prestressed anchorage device for building construction |
-
2019
- 2019-05-14 CN CN201920691088.4U patent/CN210395861U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113565265A (en) * | 2021-07-28 | 2021-10-29 | 安徽恒聚精密机械有限公司 | High-strength prestressed anchorage device for building construction |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201460241U (en) | Prestress high-strength steel mesh anchorage | |
| US8919060B1 (en) | Connector and foundation for manufactured building | |
| CN210395861U (en) | Opening anchorage device for cutting off and anchoring prestressed tendon | |
| CN106930436B (en) | Reinforced concrete shear wall with built-in prestressed steel diagonal bracing | |
| CN201190411Y (en) | Wire rope device for auto tightening suspension I-beam | |
| CN116591396A (en) | Overhanging clamp type anchorage device for prestressed carbon plate | |
| CN201250516Y (en) | Single-side wall mould holder strengthening device | |
| CN208280964U (en) | A kind of telescoping steel form zigzag end head formwork device | |
| CN211973855U (en) | Pipe gallery embedded part | |
| CN211338605U (en) | Tower crane installation device and tower crane installation system | |
| CN204456821U (en) | One can have enough to meet the need suspension scaffold pre-embedded bolt device | |
| CN214498087U (en) | Pressure-bearing and anchoring integrated prestressed anchorage device | |
| CN210288122U (en) | External prestress tension device for steel box-concrete combined beam | |
| CN208487279U (en) | Anchoring type pump line bracing means after can having enough to meet the need | |
| CN206158015U (en) | Prestressed carbon fiber plate anchor | |
| CN211547374U (en) | Reinforcing mechanism for T-beam prestress tensioning construction | |
| CN213805858U (en) | Prefabricated component and building main body connecting structure used in building industry | |
| CN219794618U (en) | Building wall connecting piece | |
| CN210529934U (en) | I-steel fixed knot that encorbelments constructs and braced system | |
| CN217204917U (en) | High-strength anchor backing plate | |
| CN217896224U (en) | Anchor device structure for prestress tension | |
| CN218348060U (en) | Shock attenuation fixing device between concrete pump pipe layer | |
| CN202969270U (en) | Vertical steel strand anchoring end limit protection device | |
| CN215802685U (en) | High-strength connecting piece of prestressed anchorage device | |
| CN218000699U (en) | Vertical pump line fixing device of floor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |