Fixing and centering device suitable for retard-bonded prestressed tendon after-anchoring spiral reinforcement

Abstract

The utility model relates to the technical field of concrete construction, aims to solve the technical problem of low construction efficiency caused by inconvenience in positioning of a spiral bar in the prior art, and discloses a fixing and centering device suitable for a spiral bar after a retard-bonded prestressed bar is anchored, and the spiral bar is used for being arranged on the retard-bonded prestressed bar in a sleeving manner. The fixing and centering device is used for fixing and centering the spiral rib, the fixing and centering device comprises a supporting support, a fixing clamping piece located on the peripheral side of the retard-bonded prestressed rib and a support clamping piece located on the spiral rib, and the two ends of the supporting support are fixedly connected to the outer side of the fixing clamping piece and the outer side of the support clamping piece respectively. Construction is convenient, installation can be conducted after the retard-bonded prestressed tendons and the spiral tendons are arranged, the retard-bonded prestressed tendons and the spiral tendons are directly clamped and fixed through pliers and the like, and adjustment is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of concrete construction, in particular to a fixing and centering device suitable for spiral reinforcement after slow-bonding prestressed reinforcement anchors. Background Art

[0002] The slow-bonding prestressing technology is easy to construct, without reserved holes and grouting processes, and the prestress loss is small before the adhesive cures, which is comparable to the unbonded prestressing technology. After the adhesive cures, the slow-bonding prestressing tendons bond to the concrete, and have good mechanical and seismic properties.

[0003] The single tensioning of the slow-bonding prestressed tendons makes the arrangement of the slow-bonding prestressed tendons flexible and takes up little space. The sizes of the supporting devices such as anchor plates, anchors, spiral tendons, etc. in its prestressed system are smaller than those of the bonded prestressed devices.

[0004] like Figure 1 As shown, the outside of the slow-bonding prestressed tendons 4 is provided with spiral tendons 3. The main function of the spiral tendons 3 is to improve the compressive strength of the local concrete under the anchor, and to prevent cracking and crushing of the concrete due to concentrated stress when the slow-bonding prestressed tendons 4 are tensioned. At the same time, it also helps to evenly distribute the load of the jack, and avoids cracking of the concrete under the anchor caused by concentrated force. Inaccurate construction position or misalignment of the spiral tendons 3 may lead to insufficient or excessive prestress, and the prestress direction does not meet the design, affecting the bearing capacity of the structure. In severe cases, it may cause cracks in the component. Since the spiral tendons 3 are small in size and large in number, on-site positioning is difficult to control. At present, the spiral tendons 3 are generally connected to the anchor plate 2 by welding, or the spiral tendons 3 are fixed and centered using wire and special binding tape. The quality of on-site construction is difficult to guarantee, and the construction efficiency is also reduced.

[0005] In order to solve the problem of positioning and centering of the spiral reinforcement 3, a fixing and centering device suitable for the spiral reinforcement after the slow-bonding prestressed reinforcement anchor is proposed. Utility Model Content

[0006] The purpose of the utility model is to provide a fixing and centering device suitable for spiral reinforcement after slow-bonding prestressed reinforcement anchors, so as to solve the technical problem of low construction efficiency caused by inconvenient positioning of spiral reinforcement in the prior art.

[0007] To achieve the above-mentioned purpose, the utility model provides a fixing and centering device suitable for spiral reinforcement after anchoring slow-bonding prestressed reinforcement, the spiral reinforcement is used to be sleeved on the slow-bonding prestressed reinforcement, the fixing and centering device is used to fix and center the spiral reinforcement, the fixing and centering device includes a supporting bracket, a fixing clip positioned on the side of the slow-bonding prestressed reinforcement and a bracket clip positioned on the spiral reinforcement, and the two ends of the supporting bracket are respectively fixedly connected to the outer side of the fixing clip and the outer side of the bracket clip.

[0008] The support bracket is used to connect the fixing clip and the bracket clip, and its two ends are fixedly connected to the outer sides of the fixing clip and the bracket clip respectively, which can ensure the stability of the entire device during the installation process.

[0009] The fixing clip is located on the peripheral side of the slow-bonding prestressed tendon and can effectively position the slow-bonding prestressed tendon by clamping it.

[0010] The bracket clip is positioned on the spiral bar to secure it in place and keep it coaxial with the slow-bond prestressing bar. The bracket clip design helps the spiral bar to be stably attached to the slow-bond prestressing bar, thereby improving the centration of the spiral bar.

[0011] Preferably, the fixing clip is a semicircular steel sheet. The fixing clip generally adopts a semicircular design so as to fit closely to the surface of the slow-bonding prestressed tendon to achieve stable clamping. The slow-bonding prestressed tendon can also be directly clamped with pliers.

[0012] Preferably, the support bracket is made of steel wire. The support bracket is made of steel wire material, which has good strength and toughness and can provide a stable support effect during construction.

[0013] Preferably, the number of support brackets is 3. The number of support brackets is 3, which are evenly distributed at both ends and the middle of the fixing clip, which helps to provide uniform support for the spiral reinforcement and slow-bonding prestressed reinforcement at different positions, making the fixing device more stable and ensuring the precise positioning of the spiral reinforcement.

[0014] Preferably, the bracket clip is a semicircular steel wire. This design allows the bracket clip to better fit the circular structure of the spiral rib, achieving a stable clamping effect. The semicircular structure also facilitates installation, allowing the spiral rib to be clamped directly with pliers.

[0015] Furthermore, the ends of the support bracket are welded to the tops of the fixing clip and the bracket support, respectively. The support bracket welds the fixing clip to the bracket clip, forming a single, integrated support and fixation structure. This welded connection effectively prevents the device from loosening or deforming during installation and construction, enhancing the fixing effect.

[0016] Furthermore, an anchor plate and an anchor fixedly connected to one side of the anchor plate are provided, the slow-bonding prestressed tendons run through the anchor plate and the anchor, and the spiral tendons are located on the other side of the anchor plate.

[0017] The utility model provides a fixing and centering device for spiral reinforcement after slow-bonding prestressed reinforcement anchor, which has the following advantages:

[0018] The device realizes the rapid positioning and fixation of spiral reinforcement, reduces the operation time of manual alignment and adjustment in traditional methods, and improves construction efficiency.

[0019] Enhanced stability and precision: the design of the fixing clips and the bracket clips makes the coaxiality of the spiral reinforcement and the slow-bonding prestressed reinforcement higher, effectively avoiding problems such as misalignment and displacement caused by inaccurate positioning during construction, and ensuring the stability and precision of construction quality.

[0020] The fixed centering device has a simple structure. The fixed clip is fixedly connected to the bracket clip through the support bracket. During installation, only a simple clamping operation is required to center and fix the spiral reinforcement. It is suitable for on-site construction operations.

[0021] It has strong adaptability, and the support bracket and clip structure can be adjusted according to the different diameters of slow-bonding prestressed tendons and spiral tendons. It has good versatility and is suitable for slow-bonding prestressed tendons and spiral tendons of various specifications.

[0022] In summary, the fixed centering device not only simplifies the installation steps and reduces the construction difficulty, but also significantly improves the construction accuracy and efficiency, and is suitable for wide promotion and application in spiral reinforcement construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a structural diagram of the fixed centering device provided by the utility model;

[0024] Figure 2 This is a schematic diagram of the three-dimensional structure of the connecting beam plate provided by the utility model.

[0025] In the figure: 1. Anchor; 2. Anchor plate; 3. Spiral reinforcement; 4. Slow-bonding prestressed reinforcement; 5. Fixing clip; 6. Support bracket; 7. Bracket clip. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0027] See Figure 1 and Figure 2 , an anchor plate 2 and an anchor 1 fixedly connected to one side of the anchor plate 2 are provided, the slow-bonding prestressed tendon 4 runs through the anchor plate 2 and the anchor 1, the spiral tendon 3 is located on the other side of the anchor plate 2, and the spiral tendon 3 is sleeved on the slow-bonding prestressed tendon 4. In order to improve the positioning accuracy of the spiral tendon and the construction efficiency, the utility model provides a fixed centering device for the spiral tendon after the slow-bonding prestressed tendon is anchored, the fixed centering device includes a U-shaped fixing clip 5, the outer side of the fixing clip 5 is fixedly connected to a support bracket 6, and the end of the support bracket 6 is fixedly connected to a U-shaped bracket clip 7.

[0028] The fixing clip 5 can also be a semicircular steel sheet, which is used to play a positioning role by clamping the slow-bonding prestressed tendons.

[0029] The number of support brackets 6 is 3, and the support brackets 6 are evenly distributed and fixedly connected to the two ends and the middle of the fixing clip 5 respectively. The support bracket 6 is composed of steel wire. One end of the support bracket 6 is welded to the fixing clip 5, and the other end of the support bracket 6 is welded to the bracket clip 7, so that the bracket clip 7 can support the spiral rib 3.

[0030] The bracket clip 7 is located at the end of the supporting bracket. It is made of steel wire and can also be semicircular in shape. It is welded to the supporting bracket 6 and can be clamped and fixed with the spiral ribs using pliers.

[0031] Exemplary implementation steps:

[0032] The three components of the fixed centering device (fixing clip 5, supporting bracket 6 and bracket clip 7) are connected by welding. After arranging the slow-bonding prestressed tendon 4, install the anchor plate 2 and the anchor 1, screw the spiral tendon 3 into the slow-bonding prestressed tendon 4, and place it at the rear of the anchor plate 2. Put the fixed centering device into the spiral tendon. After positioning, use pliers or other tools to clamp the fixed clip 5 to clamp the slow-bonding prestressed tendon 4. Adjust the three steel wires of the supporting bracket and clamp the clip 7 and the spiral tendon 3 with pliers. 2-3 fixing devices can be placed on each spiral tendon.

[0033] The utility model is easy to install and can be installed after the slow-bonding prestressed tendons and spiral tendons are arranged. It can be directly clamped and fixed with pliers or the like, making adjustment easy. The steel sheets and steel wires in the fixing device provide effective support, ensuring positioning quality while saving materials as much as possible.

[0034] The utility model provides a fixing and centering device for spiral reinforcement after slow-bonding prestressed reinforcement anchor, which has the following advantages:

[0035] First, the device achieves efficient and precise centering and fixation of spiral bars and slow-bonding prestressed bars through the rational design of fixing clips, supporting brackets, and bracket clips, greatly improving construction accuracy and avoiding misalignment or displacement problems caused by inaccurate positioning, thereby enhancing the bearing capacity and construction quality of the structure. The device adopts a steel sheet and steel wire structure, which is sturdy and durable and uses materials efficiently. It reduces material waste and lowers costs while providing stable support. It is simple and quick to operate, and only requires pliers or other tools to clamp and fix, and the installation of spiral bars can be completed quickly, which improves on-site construction efficiency. The device has strong adaptability and can adapt to prestressed bars and spiral bars of different specifications. It is suitable for widespread promotion and application in the fixation of spiral bars of various specifications, ensuring that the spiral bars and slow-bonding prestressed bars remain coaxial, improving the convenience and stability of construction, and has high practical value.

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A device for fixing and centering spiral reinforcement after anchoring slow-bonding prestressed reinforcement, wherein the spiral reinforcement (3) is used to be sleeved on the slow-bonding prestressed reinforcement (4), and is characterized in that: The fixed centering device is used for fixing and centering the spiral rib (3), and comprises a support bracket (6), a fixed clip (5) positioned on the circumference of the slow-bonding prestressed rib (4), and a bracket clip (7) positioned on the spiral rib (3), wherein the two ends of the support bracket (6) are fixedly connected to the outer side of the fixed clip (5) and the outer side of the bracket clip (7), respectively.

2. The fixing and centering device for spiral reinforcement after slow-bonding prestressed reinforcement anchor according to claim 1 is characterized in that: The fixing clip (5) is a semicircular steel sheet.

3. The fixing and centering device for spiral reinforcement after slow-bonding prestressed reinforcement anchor according to claim 2 is characterized in that: The supporting bracket (6) is made of steel wire.

4. The fixing and centering device for spiral reinforcement after slow-bonding prestressed reinforcement anchor according to claim 2 is characterized in that: The number of the supporting brackets (6) is 3.

5. The fixing and centering device for spiral reinforcement after slow-bonding prestressed reinforcement anchor according to claim 3 is characterized in that: The bracket clip (7) is a semicircular steel wire.

6. The fixing and centering device for spiral reinforcement after slow-bonding prestressed reinforcement anchor according to claim 1 is characterized in that: The two ends of the support bracket (6) are respectively welded to the top end of the fixing clip (5) and the bracket support piece.

7. The fixing and centering device for spiral reinforcement after slow-bonding prestressed reinforcement anchor according to claim 1 is characterized in that: An anchor plate (2) and an anchor (1) fixedly connected to one side of the anchor plate (2) are provided, the slow-bonding prestressed tendons (4) pass through the anchor plate (2) and the anchor (1), and the spiral tendons (3) are located on the other side of the anchor plate (2).

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