CN215519506U - Connecting structure for prestressed reinforcement - Google Patents

Abstract

The application relates to the technical field of building construction, provides a connection structure for prestressed reinforcement, and this connection structure for prestressed reinforcement includes: connector and two clip anchors: the two clip anchors are respectively assembled at two ends of the connector; the connector is provided with openings at two ends, the first end of each clamping piece anchor is assembled inside the opening at two ends of the connector respectively, and the second end of each clamping piece anchor is assembled with a prestressed tendon respectively. During the use, reasonable in design, simple structure, construction convenience can effectually press from both sides tight clamping piece anchor, and has increased clamping piece anchor intensity to a certain extent.

Description

Connecting structure for prestressed reinforcement

Technical Field

The application relates to the technical field of building construction, in particular to a connecting structure for prestressed tendons.

Background

With the rapid development of building technology, the continuous side length of the prestressed concrete upper structure in China is increased from tens of meters to more than hundreds of meters in the past in recent years, the number of longitudinal bending times and the bending angle are gradually increased. The occurrence of the change makes the original appliance for constructing the prestressed concrete structure not applicable any more.

The common connector in construction has overlarge overall dimension, occupies too much internal space of a component, has a complex structure, and a clamping piece in the prestressed tendon connector in the prior art can not effectively clamp the prestressed tendon. In addition, in the prestressed concrete structure, when the prestressed concrete engineering is too long, the prestressed tendon is tensioned at the end of the concrete, which causes great prestressed loss, and the prestressed tendon connector needs to be adopted to tension the prestressed tendon in sections, so as to reduce the prestressed loss of the prestressed concrete engineering.

At present, when current connector is connected with the ground tackle, the both connecting end department connector is located inside, and the ground tackle is located the outside, leads to ground tackle can be direct and contact such as concrete to lead to grout to enter into ground tackle and prestressing tendons in the middle of, owing to there is grout, lead to prestressing tendons before the stretch-draw and the tensioning process in the anchor end centre gripping not tight, cause the tensioning process in the prestressing tendons to be pulled off, influence the establishment of tensile force.

SUMMERY OF THE UTILITY MODEL

The main aim at of this application is overcome above-mentioned prior art's grout and enter the problem in the middle of ground tackle and prestressing tendons, provides one kind and prevents that grout from entering into the connection structure for the prestressing tendons in the middle of ground tackle and prestressing tendons.

According to an aspect of the present application, there is provided a tendon connection structure including: connector and two clip anchors: the two clip anchors are respectively assembled at two ends of the connector; the connector is provided with openings at two ends, the first end of each clamping piece anchor is assembled inside the opening at two ends of the connector respectively, and the second end of each clamping piece anchor is assembled with a prestressed tendon respectively.

Optionally, the first end of each clip anchor is connected to both ends of the connector by a screw thread.

Optionally, the inner wall of the connector forms an internal thread, and correspondingly, the outer wall of the clip anchor forms an external thread matched with the internal thread.

Optionally, during connection, the outer wall section of the first end of each clip anchor is flush with the inner wall sections of the two ends of the corresponding connector.

Optionally, the connector is a connecting sleeve.

Optionally, the clip anchor comprises an anchor ring and an anchor circumferentially surrounding the anchor ring; the anchor is connected with the connector in a matching mode, and the prestressed tendons penetrate into the anchor ring.

Optionally, the anchor ring has a plurality of circumferentially adjacent clips.

Optionally, the anchor ring has three clamping pieces, and the three clamping pieces are uniformly distributed along the circumferential direction.

Optionally, the anchor is axially tapered to form a tapered bore therethrough, and the anchor ring is axially formed in a cone adapted to the tapered bore.

Optionally, the prestressed tendons are steel strands.

According to the technical scheme, the connecting structure for the prestressed tendons has the advantages that:

the utility model provides a pair of connection structure for prestressed reinforcement, the inside prestressed reinforcement of clamping piece anchor is connected through middle connector to two clamping piece anchors, and the link of clamping piece anchor all is located inside the connector, the connector of this application is outside, including the clamping piece anchor, can play certain guard action, and can prevent that grout from getting into between connector and the clamping piece anchor, thereby the prestressing force loss of prestressed reinforcement has been reduced, realize prestressing force stranded wire segmentation unloading, segment stretch-draw, steel strand wires segmentation stretch-draw or the steel strand wires segmentation extension in the widely applicable prestressed concrete structure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the utility model and together with the description, serve to explain the principles of the utility model.

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.

FIG. 1 is a front view of a tendon connection shown in accordance with an exemplary embodiment;

FIG. 2 is a front view of a connector of a tendon connection according to one illustrated embodiment;

FIG. 3 is a side view of a connector of a tendon connection according to one illustrated embodiment;

FIG. 4 is a front view of a clip anchor of a tendon connection according to an exemplary embodiment;

fig. 5 is a side view of a clip anchor of a tendon connection according to an exemplary embodiment.

Wherein the reference numerals are as follows:

1. a connector; 11. an internal thread;

2. a clip anchor; 21. an anchor; 211. an external thread; 22. an anchor ring; 221. a clip.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Referring to fig. 1 to 5, fig. 1 is a front view illustrating a tendon connection structure according to an exemplary embodiment; FIG. 2 is a front view of a connector of a tendon connection according to one illustrated embodiment; FIG. 3 is a side view of a connector of a tendon connection according to one illustrated embodiment; FIG. 4 is a front view of a clip anchor of a tendon connection according to an exemplary embodiment; fig. 5 is a side view of a clip anchor of a tendon connection according to an exemplary embodiment.

At present, when current connector is connected with the ground tackle, the both connecting end department connector is located inside, and the ground tackle is located the outside, leads to ground tackle can be direct and contact such as concrete to lead to grout to enter into ground tackle and prestressing tendons in the middle of, owing to there is grout, lead to prestressing tendons before the stretch-draw and the tensioning process in the anchor end centre gripping not tight, cause the tensioning process in the prestressing tendons to be pulled off, influence the establishment of tensile force.

In order to solve the technical problem, the application provides a connection structure for prestressed tendons. Referring to fig. 1 to 5, representatively illustrated in fig. 1 to 5 is a tendon connection structure that can embody principles of the present application, including: connector 1 and two clip anchors 2: two clip anchors 2 are respectively assembled at both ends of the connector 1; the both ends opening of connector 1, the first end of each clamping piece anchor 2 assembles inside the both ends opening of connector 1 respectively, and the second end of each clamping piece anchor 2 assembles prestressing tendons respectively.

The utility model provides a pair of connection structure for prestressed reinforcement, two clamping piece anchors 2 are through the inside prestressed reinforcement of connector 1 connection clamping piece anchor 2 in the middle of, and the link of clamping piece anchor 2 all is located connector 1 inside, connector 1 of this application is outside, including clamping piece anchor 2, can play certain guard action, and can prevent that grout from getting into between connector 1 and the clamping piece anchor 2, thereby the prestressing force loss of prestressed reinforcement has been reduced, realize prestressing strand segments unloading, segmentation stretch-draw, steel strand segments stretch-draw or the steel strand segments that can extensively be applicable to in the prestressed concrete structure are lengthened.

In this embodiment, the first end of each clip anchor 2 is connected to both ends of the connector 1 by a screw. Specifically, the inner walls of the two ends of the connector 1 are formed with inner threads 11, and correspondingly, the outer wall of the first end of the clip anchor 2 is formed with outer threads 211 matched with the inner threads 11. During connection, the outer wall tangent plane of the first end of each clamping piece anchor 2 is flush with the inner wall tangent planes of the two ends of the corresponding connector 1, so that cement paste and the like are prevented from entering the clamping piece anchors 2 and the prestressed tendons.

During operation, anchor the prestressing tendons of two clamping piece anchor 2 tip according to the operating procedure of clamping piece anchor 2, and the first end that two clamping piece anchors 2 have external screw thread 211 is the both ends that screw in connector 1 has internal thread 11 respectively, guarantees clamping piece anchor 2 first end tangent plane everywhere and connector 1 both ends tangent plane everywhere parallel and level, screws up the back to this reaches the purpose of connecting both sides prestressing tendons.

Alternatively, as shown in fig. 2-3, the connector 1 is a connecting sleeve. Internal threads 11 are arranged inside two ends of the connecting sleeve, and a certain smooth part is arranged between the internal threads 11 at the two ends, and the smooth part is used for enabling the two connected prestressed tendons to have a reserved storage space.

In the present embodiment, as shown in fig. 5, the clip anchor 2 includes an anchor ring 22 and an anchor 21 circumferentially surrounding the anchor ring 22; the anchor 21 is connected to the connector 1 in a fitting manner, and the anchor ring 22 is internally penetrated by the tendon. The anchor ring 22 is used for fixing the prestressed tendons, the anchor part 21 is used for fixing the anchor ring 22, if the prestressed tendons with different sizes need to be matched, only the anchor ring 22 with different sizes needs to be replaced, and the effects of convenience in replacement and cost saving are achieved.

In this embodiment, as shown in fig. 4, the anchor ring 22 has a plurality of circumferentially adjacent clips 221. Specifically, as shown in fig. 5, the anchor ring 22 has three clamping pieces 221, and the three clamping pieces 221 are uniformly distributed along the circumferential direction. The number and arrangement of the clips 221 depend on the specific requirement, and are not described in detail herein.

In this embodiment, the anchor 21 is axially tapered to form a tapered bore therethrough, and the anchor ring 22 is axially formed in a cone that fits within the tapered bore. The structure of the conical hole and the cone body is matched, the friction area between the conical hole and the cone body is increased, so that the friction resistance between the conical hole and the cone body is increased, the falling-off is prevented,

in this embodiment, the tendon is a steel strand. The steel strand is a steel product formed by twisting a plurality of steel wires, and a zinc coating, a zinc-aluminum alloy layer, an aluminum coating layer, a copper coating layer, epoxy resin coating and the like can be added on the surface of the carbon steel according to needs.

It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The foregoing are merely exemplary embodiments of the present invention, which enable those skilled in the art to understand or practice the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. A connecting structure for a tendon is characterized by comprising a connector (1) and two clip anchors (2):

the two clip anchors (2) are respectively assembled at two ends of the connector (1);

the two ends of the connector (1) are opened, the first end of each clamping piece anchor (2) is assembled inside the two end openings of the connector (1) respectively, and the second end of each clamping piece anchor (2) is assembled with a prestressed tendon respectively.

2. A tendon connection according to claim 1 in which the first end of each clip anchor (2) is threadably connected to both ends of the connector (1).

3. A tendon connection according to claim 2, characterized in that the inner wall of the connector (1) is formed with an internal thread (11) and correspondingly the outer wall of the clip anchor (2) is formed with an external thread (211) adapted to the internal thread (11).

4. A tendon connection according to claim 1 characterised in that the clip anchors (2) are connected so that the cut of the outer wall of the first end of the clip anchors (2) is flush with the cut of the inner wall of the corresponding connector (1).

5. A tendon connection according to claim 1 in which the connector (1) is a connection sleeve.

6. A tendon connection according to claim 1, characterised in that the clip anchor (2) comprises an anchor ring (22) and an anchor (21) circumferentially surrounding the anchor ring (22);

the anchor (21) is matched and connected with the connector (1), and the prestressed tendon is penetrated into the anchor ring (22).

7. A tendon connection according to claim 6 wherein the anchor ring (22) has a plurality of circumferentially adjacent clips (221).

8. A tendon connection according to claim 6 or 7 in which the anchor ring (22) has three clamping segments (221), three of said clamping segments (221) being circumferentially uniformly distributed.

9. A tendon connection according to claim 8 in which the anchor (21) is axially tapered to form a tapered bore therethrough and the anchor ring (22) is axially formed in a cone fitting within the tapered bore.

10. The tendon connection structure of claim 1 wherein the tendon is a steel strand.

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