Prestressed concrete anchoring end steel bar structure

Abstract

The utility model discloses a prestressed concrete anchoring end steel bar structure which comprises a prestressed tendon and an anchoring end steel strand bundle arranged at the end, located in concrete, of the prestressed tendon, and the anchoring end steel strand bundle is composed of a plurality of steel strands and enables the steel strand bundle to form a broom-shaped overall structure. Anchoring parts are arranged at the end parts, far away from the prestressed tendons, of the steel strands; according to the prestressed concrete anchoring end steel bar structure provided by the utility model, the steel bar structure of the prestressed concrete anchoring end is improved, so that the prestressed concrete anchoring end steel bar structure has the function of a fixed end anchorage device in the prior art, and the prestressed tendons can be tensioned in some areas where the fixed end anchorage device cannot be applied or mounted.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, in particular to a prestressed concrete anchor end steel bar structure. Background Art

[0002] Prestressed concrete structure is a structure in which pressure is artificially applied to the structural components before they are subjected to external loads. The resulting prestressed state is used to reduce or offset the tensile stress caused by the external load. That is, the higher compressive strength of concrete is used to make up for its insufficient tensile strength, thereby delaying the cracking of concrete in the tensile zone. Structures made of prestressed concrete achieve precompressive stress by tensioning steel bars, so they are also called prestressed reinforced concrete structures.

[0003] The existing method for prestressing tendons is typically to first pour concrete. Once the concrete reaches the required strength, the steel bars are tensioned through pre-reserved channels within the concrete and anchored at both ends to complete the tensioning process. During the tensioning process, anchors are required at both ends of the tendon. These anchors include fixed-end anchors and tensioning-end anchors. However, in some special environments, it is not possible to install fixed-end anchors. Therefore, to meet the tensioning requirements of the tendons, corresponding steel bars are required at the anchorage ends to replace the fixed-end (i.e., non-tensioning-end) anchors. Utility Model Content

[0004] In view of this, the purpose of the present invention is to provide a prestressed concrete anchor end steel bar structure, which improves the steel bar structure of the prestressed concrete anchor end so that it has the function of the fixed end anchor in the prior art and can tension the prestressed tendons in some areas where the fixed end anchor cannot be applied or installed.

[0005] A prestressed concrete anchor end reinforcement structure is provided to facilitate operators to quickly assemble unit modules of aluminum panel curtain walls on the ground, thereby improving assembly efficiency and ensuring that the aluminum panels and keels are not damaged during assembly. At the same time, the assembly device can also meet the needs of assembling unit modules with special shapes and ensure assembly accuracy and quality.

[0006] The utility model provides a prestressed concrete anchor end steel bar structure, comprising a prestressed tendon and an anchor end steel strand bundle arranged at the end of the prestressed tendon located inside the concrete, the anchor end steel strand bundle being composed of a plurality of steel strands and forming the steel strand bundle into a broom-shaped integral structure, and an anchoring portion being provided at the end of the steel strand away from the prestressed tendon.

[0007] Furthermore, one end of the steel strand is connected to the prestressed tendon, and the other end is bent outward along the center line of the prestressed tendon.

[0008] Furthermore, the anchoring portion has a chicken claw-shaped structure and is formed by bending the steel bars in the steel strand.

[0009] Furthermore, it also includes connecting steel bars for connecting several of the steel strand anchoring parts.

[0010] Furthermore, it also includes stirrups sleeved on the outside of the steel strand bundle at the anchoring end, and the stirrups are used to strengthen the concrete strength of the anchoring end.

[0011] Furthermore, the prestressed tendons include a corrugated tube and a middle section of a steel strand bundle arranged in the corrugated tube.

[0012] The beneficial effect of the present invention is that the prestressed concrete anchor end steel bar structure provided by the present invention improves the steel bar structure of the prestressed concrete anchor end so that it has the function of the fixed end anchor in the prior art and can tension the prestressed tendons in some areas where the fixed end anchor cannot be applied or installed. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0014] Figure 1 It is a structural diagram of the prestressed concrete anchor end steel bar structure in the utility model;

[0015] Figure 2 yes Figure 1 AA section view;

[0016] Explanation of the accompanying symbols: 1-concrete; 2-corrugated pipe; 3-steel strand; 4-anchoring part; 5-stirrup; 6-connecting steel bar. DETAILED DESCRIPTION

[0017] As shown in the figure, the present invention provides a prestressed concrete anchor end steel bar structure, including a prestressed tendon and an anchor end steel strand bundle arranged at the end of the prestressed tendon located inside the concrete 1, the anchor end steel strand bundle is composed of a plurality of steel strands 3 and the steel strand bundle is formed into a broom-shaped integral structure, the steel strand 3 is provided with an anchor portion 4 at the end away from the prestressed tendon; the prestressed tendon includes a corrugated tube 2 and a middle section steel strand bundle arranged in the corrugated tube 2; one end of the steel strand 3 is connected to the prestressed tendon, and the other end is bent outward along the center line of the prestressed tendon; wherein the prestressed tendon The stress reinforcement is composed of a steel strand bundle and a corrugated tube 2 sleeved on the outside of the steel strand bundle. The steel strand bundle is composed of multiple steel strands 3, and the steel strands 3 are formed by multiple steel bars spirally wound together; the anchor end steel strand bundle is formed by the middle section of the steel strand bundle extending from the corrugated tube 2. In order to disperse the stress of the anchor end and fully integrate it with the concrete 1 at the anchor end to be more conducive to tensioning at the tensioning end, the steel strands 3 in the anchor end steel strand bundle are bent outward and eventually form a broom-shaped overall structure; in order to strengthen the anchoring force of the anchor end, an anchoring part 4 is also provided at the end of the steel strand 3 away from the prestressed tendon.

[0018] In this embodiment, the anchoring portion 4 is a chicken claw-shaped structure and is formed by bending the steel bars in the steel strand 3; Figure 1 As shown, in order to increase the resistance between the anchoring end and the concrete so that the tensioning end anchor can fully tension the prestressed tendons, the anchoring part is set to a chicken claw-shaped structure to fully contact the concrete and bear the force, wherein the chicken claw-shaped structure is formed by bending the steel bars in the steel strand 3.

[0019] In this embodiment, it also includes connecting steel bars 6 for connecting the anchoring parts 4 of several of the steel strands 3; wherein the connecting steel bars 6 can connect and fix multiple anchoring parts 4 to form a compressive stress on the concrete structure during tensioning, and at the same time, the connecting steel bars 6 can also extend outward to form a connection on the stirrups 5, thereby improving the integrity of the steel bar structure.

[0020] In this embodiment, stirrups 5 are further included, which are sleeved on the outside of the steel strand bundle at the anchor end. The stirrups 5 are used to strengthen the concrete strength of the anchor end. By arranging stirrups 5 on the outside of the steel strand bundle at the anchor end, the concrete strength of the anchor end can be effectively strengthened and cracking of the concrete at the anchor end can be prevented.

[0021] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and are not limiting. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A prestressed concrete anchor end steel bar structure, characterized by: It includes prestressed tendons and anchoring end steel strand bundles arranged at the ends of the prestressed tendons located inside the concrete. The anchoring end steel strand bundles are composed of several steel strands and form a broom-shaped overall structure. The steel strands are provided with anchoring parts at the ends away from the prestressed tendons.

2. The prestressed concrete anchor end steel bar structure according to claim 1, characterized in that: One end of the steel strand is connected to the prestressed tendon, and the other end is bent outward along the center line of the prestressed tendon.

3. The prestressed concrete anchor end steel bar structure according to claim 2, characterized in that: The anchoring portion is in a chicken claw-shaped structure and is formed by bending the steel bars in the steel strand.

4. The prestressed concrete anchor end steel bar structure according to claim 3, characterized in that: It also includes connecting steel bars for connecting several of the steel strand anchoring portions.

5. The prestressed concrete anchor end steel bar structure according to claim 1, characterized in that: It also includes stirrups sleeved on the outside of the steel strand bundle at the anchoring end, and the stirrups are used to strengthen the concrete strength of the anchoring end.

6. The prestressed concrete anchor end steel bar structure according to claim 1, characterized in that: The prestressed tendons include a corrugated tube and a middle section of a steel strand bundle arranged in the corrugated tube.

Images