CN211396284U

CN211396284U - Connecting structure of flat anchor assembly

Info

Publication number: CN211396284U
Application number: CN201922223864.0U
Authority: CN
Inventors: 焦景有; 焦德库; 焦乐乐; 焦玉鹏; 马喜庆
Original assignee: Henan Xinrong Heavy Industry Co ltd
Current assignee: Henan Xinrong Heavy Industry Co ltd
Priority date: 2019-12-12
Filing date: 2019-12-12
Publication date: 2020-09-01
Anticipated expiration: 2029-12-12

Abstract

The utility model relates to a cleaner production technical field discloses a connection structure of flat anchor subassembly, and it is including the flat anchor that is the cuboid form and the fastener that is used for centre gripping steel strand wires, has seted up first through-hole on the flat anchor, and the axial lead of first through-hole is perpendicular with the longest limit of flat anchor, and the fastener tight fit is in first through-hole, and the flat anchor supports on the anchor backing plate that has the through-hole, and the bellows inserts in the through-hole of anchor backing plate, and keeps away from the flat anchor, and the steel strand wires that are located the bellows wear out first through-hole. The utility model has the advantages that: the steel strand wires pass through the flat anchor at two ends of the concrete piece, the jack tightly supports the flat anchor on the anchor backing plate and simultaneously outwards pulls the steel strand wires, and after the prestress applied to the concrete piece by the anchor backing plate at two ends of the concrete reaches the standard, the end part of the steel strand wires is locked in the first through hole through the fastener, so that the steel strand wires continuously apply the prestress to the concrete piece.

Description

Connecting structure of flat anchor assembly

Technical Field

The utility model relates to a clean production technical field, especially a connection structure of flat anchor subassembly.

Background

The prestress tensioning is to apply tension in advance in the member, so that the applied prestress tensioning member bears compressive stress, and further generates certain deformation to deal with the load borne by the structure, including the load of the self weight of the member, wind load, snow load, earthquake load action and the like; generally, steel strands, jacks and prestressed anchors are used for tensioning; before the engineering structural member bears external load, pre-tensioning stress is applied to the steel strand in the tension module, so that the bending resistance and rigidity of the member are improved, the time for crack occurrence is delayed, and the durability of the member is improved; in the mechanical structure, the stress is generated in advance, and the advantages of the mechanical structure are that the rigidity of the structure can be improved, the vibration and the elastic deformation are reduced, the elastic strength of the tension module can be obviously improved, and the original resistance is stronger.

The prestressed anchorage device is widely applied to project engineering such as highway bridges, railway bridges, urban overpasses, urban light rails, high-rise buildings, hydraulic and hydroelectric dams, ports and docks, rock slope protection anchoring, foundation reinforcement, tunnel mine roof anchor tops, prestressed net frames, subways, large building halls, warehouse workshops, tower buildings, weight lifting, sliding film intermittent propulsion, bridge and tunnel jacking, large containers and ships, sleepers, bridge support replacement, bridge and building reinforcement, steel bar engineering, antimagnetic and anticorrosive engineering (fiber anchors), carbon fiber reinforcement, construction of pretensioned beam fields, in-vitro prestressed engineering, stay cables, suspension cables and the like, the existing anchor connecting structure is not stable enough, and the service life of a component applying pretension force is short.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a connection structure of flat anchor subassembly to solve the problem that current anchor connection structure is stable inadequately.

The purpose of the utility model is realized through the following technical scheme: the utility model provides a connection structure of flat anchor subassembly, is including the flat anchor that is the cuboid form and the fastener that is used for centre gripping steel strand wires, first through-hole has been seted up on the flat anchor, the axial lead of first through-hole with the longest side of flat anchor is perpendicular, the fastener tight fit is in the first through-hole, the flat anchor supports on the anchor backing plate that has the through-hole, and the bellows inserts in the through-hole of anchor backing plate, and keep away from the flat anchor is located in the bellows steel strand wires are worn out first through-hole.

Preferably, one end of the spiral rib sleeved on the corrugated pipe abuts against the anchor backing plate, and the other end of the spiral rib abuts against the steel reinforcement framework of the concrete piece.

Preferably, the fastener is a tapered cylinder with two open ends formed by a plurality of arc-shaped steel plates, the first through holes are in a tapered cylinder shape, and the taper of the fastener is equal to that of the first through holes.

Preferably, the outer wall of the large end of the fastener is provided with a clamping groove along the circumferential direction, and the elastic rubber ring is clamped on the groove bottom of the clamping groove.

Preferably, the inner wall of the fastener is provided with threads, and the first through holes are a plurality of and are uniformly distributed along the longest edge of the flat anchor.

Preferably, the flat anchor is provided with a plurality of threaded through holes which are distributed in a grid shape, the grids of the grid-shaped threaded through holes are provided with one first through hole, the first through holes are distributed in at least one row along the length direction of the flat anchor, and bolts are screwed in the threaded through holes.

Preferably, the first through hole comprises a clamping section and a limiting section, the diameter of the limiting section is smaller than that of the clamping section, a chamfer is arranged at a port of the clamping section, which is far away from the limiting section, the fastening piece is a cylinder with a notch formed by a steel plate ring, and the fastening piece is positioned in the clamping section of the first through hole.

Preferably, the fastener is provided with a thread on an inner wall thereof.

Compared with the prior art, the beneficial effects of the utility model are that: the steel strand wires pass through the flat anchor at two ends of the concrete piece, the jack tightly supports the flat anchor on the anchor backing plate and simultaneously outwards pulls the steel strand wires, and after the prestress applied to the concrete piece by the anchor backing plate at two ends of the concrete reaches the standard, the end part of the steel strand wires is locked in the first through hole through the fastener, so that the steel strand wires continuously apply the prestress to the concrete piece.

Drawings

Fig. 1 is a first schematic structural diagram of the present invention;

FIG. 2 is a second schematic structural view of the present invention;

FIG. 3 is a first schematic structural view of a flat anchor assembly;

FIG. 4 is a second schematic structural view of the flat anchor assembly;

FIG. 5 is a first schematic structural view of a fastener;

FIG. 6 is a second schematic structural view of the fastener;

in the figure, 1-flat anchor, 2-fastener, 3-first through hole, 4-steel strand, 5-hoop groove, 6-elastic rubber ring, 7-threaded through hole, 8-bolt, 9-anchor backing plate, 10-corrugated pipe, 11-concrete piece, 12-grouting hole, and 13-spiral rib.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the present invention, the embodiments and the features of the embodiments may be combined with each other without conflict.

Example 1:

as shown in fig. 1 and 3, a connection structure of a flat anchor 1 assembly comprises a rectangular flat anchor 1 and a fastener 2 for clamping a steel strand 4, wherein the flat anchor 1 is provided with a first through hole 3, the axis of the first through hole 3 is perpendicular to the longest side of the flat anchor 1, the fastener 2 is tightly fitted in the first through hole 3, the flat anchor 1 is supported on an anchor backing plate 9 with a through hole, a corrugated pipe 10 is inserted into the through hole of the anchor backing plate 9, and far away from the flat anchor 1, the steel strand 4 in the corrugated pipe 10 penetrates out of the first through hole 3, preferably, the fastener 2 is a conical cylinder which is formed by a plurality of arc-shaped steel plates and has two open ends, and the wall thickness of the cone formed by the arc-shaped steel plate is gradually thinned from the large end to the small end, the first through hole 3 is in a cone shape, the taper of the fastening piece 2 is equal to that of the first through hole 3, and the steel strand 4 is firmly clamped by the fastening piece 2 and the first through hole 3 which are matched in the cone shape.

The utility model discloses an installation and theory of operation as follows: the corrugated pipe 10 penetrates through two ends of the concrete part 11, anchor backing plates 9 are installed at two ends of the corrugated pipe 10, the flat anchors 1 are installed on the anchor backing plates 9, the steel strands 4 penetrate through corresponding first through holes 3 on the flat anchors 1 at the two ends, then the steel strands 4 are simultaneously pulled in opposite directions by using jacks at the two ends, the anchor backing plates 9 at the two ends are close to each other when the steel strands 4 are pulled, so that prestress is applied to the concrete part 11, when the applied prestress reaches the standard, the fastening piece 2 is pushed into the first through hole 3, so that the steel strands 4 are in a tight state to keep the prestress on the concrete prefabricated part, after the application of the adaptive force is completed, the concrete part 11 is grouted through grouting holes 12 on the anchor backing plates 9, a gap between the concrete part 11 and the corrugated pipe 10 is filled, the concrete part 11 is more compact, and the corrugated pipe 10 reserves a space for the steel strands 4 to tighten, the concrete part 11 is prevented from cracking when the steel strands 4 embedded in the concrete part 11 are tightened.

In this embodiment, as shown in fig. 1, one end of the spiral rib 13 sleeved on the corrugated pipe 10 abuts against the anchor plate 9, the other end of the spiral rib abuts against the reinforcement cage of the concrete member 11, the anchor plate 9 is embedded into the concrete and the spiral rib 13 is installed on the surface of the anchor plate 9, and the other end of the spiral rib 13 abuts against the reinforcement cage in the concrete member 11, so as to provide a tightening force for the anchor plate 9 and prevent the anchor plate 9 from crushing the end surface of the concrete member 11.

In this embodiment, as shown in fig. 1 and 5, a tightening groove 5 is formed on the outer wall of the large end of the fastening member 2 along the circumferential direction thereof, and an elastic rubber ring 6 is tightened on the bottom of the tightening groove 5, so that the size of the opening of the fastening member 2 can be conveniently adjusted to clamp the steel strand 4 within a certain size range.

In this embodiment, as shown in fig. 1 and 5, the inner wall of the fastening member 2 is provided with a plurality of threads, the first through holes 3 are uniformly distributed along the longest side of the flat anchor 1, the threads increase the mechanical engaging force between the fastening member 2 and the steel strand 4, so that the clamping is firmer, and the uniformly distributed first through holes 3 avoid uneven stress on the flat anchor 1, which results in serious local damage and influences the service life of the flat anchor.

Example 2:

as shown in fig. 2 and 4, a connection structure of a flat anchor 1 assembly comprises a rectangular flat anchor 1 and a fastener 2 for clamping a steel strand 4, the flat anchor 1 is provided with a first through hole 3, the axis of the first through hole 3 is perpendicular to the longest side of the flat anchor 1, the fastener 2 is tightly fitted in the first through hole 3, the flat anchor 1 is supported on an anchor backing plate 9 with a through hole, a corrugated pipe 10 is inserted into the through hole of the anchor backing plate 9 and is far away from the flat anchor 1, the steel strand 4 in the corrugated pipe 10 penetrates out of the first through hole 3, one end of a spiral rib 13 sleeved on the corrugated pipe 10 is supported on the anchor backing plate 9, the other end is supported on a reinforcement cage of a concrete member 11, preferably, the flat anchor 1 is provided with a plurality of threaded through holes 7 and is distributed in a grid shape, the grid of the threaded through holes 7 is provided with the first through hole 3, the first through holes 3 are distributed in at least one row along the length direction of the flat anchor 1, the bolt 8 is screwed into the threaded through hole 7.

The utility model discloses an installation lies in with embodiment 1's difference, behind fastener 2 pushes first through-hole 3, twists screw thread through-hole 7 with bolt 8 again, because fastener 2 and 3 tight fittings of first through-hole, so behind fastener 2 pushes first through-hole 3, slight bulging deformation can take place for first through-hole 3, and twist screw thread through-hole 7 with bolt 8 after, under the tight effect that rises of bolt 8, thereby make 3 shrink firm centre gripping fasteners 2 of first through-hole.

In this embodiment, as shown in fig. 2 and 6, first through-hole 3 comprises clamping section and spacing section, the diameter of spacing section is less than the diameter of clamping section, the port that clamping section kept away from spacing section is provided with the chamfer, the chamfer makes things convenient for pushing of fastener 2, fastener 2 is by the steel sheet circle formation drum that has the breach, take place the shrink when fastener 2 pushes clamping section, thereby press from both sides tight steel strand wires 4, fastener 2 is located the clamping section of first through-hole 3, spacing section has prevented fastener 2 from being pulled out first through-hole 3.

In this embodiment, as shown in fig. 2 and 6, the inner wall of the fastening member 2 is provided with a thread, and the thread increases the mechanical engagement force between the fastening member 2 and the steel strand 4, so that the clamping is firmer.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a connection structure of flat anchor subassembly, is including the flat anchor that is the cuboid form and the fastener that is used for centre gripping steel strand wires, first through-hole has been seted up on the flat anchor, the axial lead of first through-hole with the longest limit of flat anchor is perpendicular, the fastener tight fit is in the first through-hole, its characterized in that: the flat anchor is abutted to an anchor backing plate with a through hole, the corrugated pipe is inserted into the through hole of the anchor backing plate and is far away from the flat anchor, and the steel strand in the corrugated pipe penetrates out of the first through hole.

2. The connecting structure of a flat anchor assembly according to claim 1, wherein: one end of the spiral rib sleeved on the corrugated pipe is abutted against the anchor backing plate, and the other end of the spiral rib is abutted against a steel bar framework of the concrete piece.

3. A connection structure of a flat anchor assembly according to claim 1 or 2, wherein: the fastener is a taper cylinder with two open ends formed by a plurality of arc-shaped steel plates, the first through holes are in a taper cylinder shape, and the taper of the fastener is equal to that of the first through holes.

4. A connection structure of a flat anchor assembly according to claim 3, wherein: the outer wall of the large end of the fastener is provided with a tightening groove along the circumferential direction, and the elastic rubber ring is hooped on the groove bottom of the tightening groove.

5. The connecting structure of a flat anchor assembly according to claim 4, wherein: the inner wall of the fastener is provided with threads, the first through holes are a plurality of and are uniformly distributed along the longest edge of the flat anchor.

6. The connecting structure of a flat anchor assembly according to claim 1, wherein: the flat anchor is provided with a plurality of threaded through holes which are distributed in a grid shape, the grids of the grid-shaped threaded through holes are provided with one first through hole, the first through holes are distributed in at least one row along the longest edge of the flat anchor, and bolts are screwed in the threaded through holes.

7. The connecting structure of a flat anchor assembly according to claim 5, wherein: the first through hole is composed of a clamping section and a limiting section, the diameter of the limiting section is smaller than that of the clamping section, the clamping section is far away from the port of the limiting section and is provided with a chamfer, the fastening piece is a cylinder with a notch formed by a steel plate ring, and the fastening piece is located in the clamping section of the first through hole.

8. A connection structure of a flat anchor assembly according to claim 5 or 6, wherein: and the inner wall of the fastener is provided with threads.