Quick-release type post-tensioning prestressed tension groove positioning and forming device

Abstract

This utility model relates to a quick-release post-tensioned prestressing tensioning groove positioning and forming device, belonging to the field of prestressed concrete structure construction technology. The purpose is to provide a post-tensioned prestressing tensioning groove positioning and forming device that is convenient to manufacture and disassemble. The technical solution adopted is as follows: the size and shape of the polystyrene foam block are adapted to the size and shape of the post-tensioned prestressing tensioning groove; the polystyrene foam block has axial through holes; the end face of the anchor plate is tightly attached to the bottom surface of the polystyrene foam block; the polystyrene foam block and the anchor plate are bound together by one or more first binding wires to form a whole. The polystyrene foam block and the anchor plate are then bound together with the structural steel reinforcement by one or more second binding wires, so that the top surface of the polystyrene foam block is tightly attached to the end mold; the prestressed corrugated pipe passes through the through holes in the anchor plate, the axial through holes in the polystyrene foam block, and the pre-reserved holes in the end mold. This utility model is used for the positioning and forming of post-tensioned prestressed tensioning grooves.

Description

Technical Field

[0001] This utility model relates to a quick-release post-tensioned prestressing groove positioning and forming device, belonging to the field of prestressed concrete structure construction technology. Background Technology

[0002] As an important part of prestressed concrete structures, the efficiency, versatility, and economy of the prestressing tensioning groove positioning and forming process also affect the entire construction process.

[0003] Currently, most post-tensioned prestressed tensioning groove positioning and forming devices use customized templates, meaning molds are made specifically for different types of tensioning grooves. However, when encountering inconsistent structural dimensions and a wide variety of structural types, these devices often face problems such as a large number of molds to process, low utilization rate, and complex disassembly, resulting in high construction costs and poor efficiency.

[0004] Therefore, it is necessary to develop a quick-release post-tensioned prestressing groove positioning and forming device. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a post-tensioned prestressing groove positioning and forming device that is easy to manufacture and disassemble.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a quick-release post-tensioned prestressing groove positioning and forming device, comprising a polystyrene foam block and an anchor plate, wherein the size and shape of the polystyrene foam block are adapted to the size and shape of the post-tensioned prestressing groove, the polystyrene foam block is provided with an axial through hole, the end face of the anchor plate is tightly attached to the bottom surface of the polystyrene foam block, and the polystyrene foam block and the anchor plate are bound together by one or more first binding wires to form a whole.

[0007] Furthermore, the polystyrene foam block and the anchor plate are tied together with the component reinforcement by one or more second binding wires, so that the top surface of the polystyrene foam block is tightly attached to the end mold, and the prestressed corrugated pipe passes through the through hole on the anchor plate, the axial through hole on the polystyrene foam block and the reserved hole on the end mold.

[0008] Furthermore, if the structural dimensions are large and the spacing between the reinforcing bars of the components is large, four diagonal reinforcing bars can be added to prevent the polystyrene foam blocks from sliding. The four diagonal reinforcing bars are arranged in a diamond shape, surrounding the polystyrene foam blocks and contacting the four corners of the polystyrene foam blocks. All four diagonal reinforcing bars are connected to the reinforcing bars of the components.

[0009] Furthermore, the polystyrene foam block is wrapped with a flexible insulating layer.

[0010] Furthermore, the isolation layer is a plastic film or plastic tape.

[0011] Furthermore, polyurethane foam is provided between the contact surface of the isolation layer and the end mold.

[0012] Furthermore, both the first binding wire and the second binding wire are iron wires.

[0013] Furthermore, the anchor plate is a flat plate with a through hole in the middle.

[0014] Furthermore, a sleeve is vertically fixed at the through hole on the anchor plate.

[0015] Compared with the prior art, the present invention has the following beneficial effects.

[0016] 1. This utility model uses polystyrene foam blocks to form tension grooves, which makes it easy to prefabricate tension grooves of various sizes and shapes, and is not affected by the site or construction environment, and can be made as needed.

[0017] 2. This utility model uses wire to bind polystyrene foam blocks and anchor plates together, which is simple to operate and has high construction efficiency. Especially in the production of prefabricated beams and PC beams for prefabricated buildings, polystyrene foam blocks and anchor plates can be bound together with the reinforcing cage and manufactured simultaneously. The positioning of the tensioning slot can be completed during the fabrication of the reinforcing cage, avoiding the limitations of traditional template positioning and forming, reducing the template fabrication and disassembly processes for the tensioning slot, and improving production efficiency.

[0018] 3. This utility model utilizes the partial elasticity of polystyrene foam blocks to make them fit more tightly with the anchor plate and end mold, thus preventing grout leakage at the groove during concrete pouring and avoiding problems such as reduced groove size and difficulty in subsequent anchor plate installation caused by grout leakage.

[0019] 4. In this utility model, it is only necessary to reserve holes on the end mold for the prestressed corrugated pipe to pass through, which avoids the need to make the end mold separately. Especially in the case of diverse structural dimensions and factory production, it improves the reusability of the end mold and avoids template waste.

[0020] 5. This utility model has a simple structure, simplifies the template operation process, and is easy to use. In addition, the material cost is low, which reduces labor costs and significantly reduces the overall cost. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a structural schematic diagram of Embodiment 1 of the present utility model.

[0023] Figure 2 This is a top view of Embodiment 1 of the present utility model.

[0024] Figure 3 This is a structural schematic diagram of Embodiment 2 of the present invention.

[0025] Figure 4 This is a side view of Embodiment 2 of the present invention.

[0026] Figure 5 This is a schematic diagram showing the connection between the polystyrene foam block and the anchor plate in this utility model.

[0027] In the figure: 1 is polystyrene foam block, 2 is anchor plate, 3 is first binding wire, 4 is second binding wire, 5 is component reinforcement, 6 is end formwork, 7 is prestressed corrugated pipe, 8 is inclined reinforcement, 9 is isolation layer, and 10 is polyurethane foam. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described in conjunction with the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model.

[0029] It should be noted that the structures, proportions, sizes, etc. shown in the accompanying drawings of this specification are only used to complement the content disclosed in the specification for those skilled in the art to understand and read, and are not intended to limit the conditions under which this utility model can be implemented. Therefore, they have no substantial technical significance. Any modification to the structure, change in the proportional relationship, or adjustment of the size should still fall within the scope of the technical content disclosed in this utility model, provided that it does not affect the effects and purposes that this utility model can produce. It should be noted that in this specification, relational terms such as "first" and "second" are only used to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0030] The present invention provides the following embodiments.

[0031] Example 1 like Figure 1 , Figure 2 , Figure 5As shown, this utility model discloses a quick-release post-tensioned prestressing groove positioning and forming device, which includes a polystyrene foam block 1 and an anchor plate 2. The size and shape of the polystyrene foam block 1 are adapted to the size and shape of the post-tensioned prestressing groove. An axial through hole is provided on the polystyrene foam block 1. The end face of the anchor plate 2 is tightly attached to the bottom surface of the polystyrene foam block 1. The polystyrene foam block 1 and the anchor plate 2 are tied together by one or more first binding wires 3 to form a whole.

[0032] The polystyrene foam block 1 and the anchor plate 2 are tied together with the structural steel reinforcement 5 by one or more second binding wires 4, so that the top surface of the polystyrene foam block 1 is tightly attached to the end mold 6. The prestressed corrugated pipe 7 passes through the through hole on the anchor plate 2, the axial through hole on the polystyrene foam block 1 and the reserved hole on the end mold 6.

[0033] The polystyrene foam block 1 is wrapped with a flexible isolation layer 9. The isolation layer 9 can prevent the polystyrene foam block 1 from remaining on the concrete surface after the concrete is poured.

[0034] The isolation layer 9 is a plastic film or plastic tape.

[0035] A polyurethane foam 10 is provided between the contact surface of the isolation layer 9 and the end mold 6.

[0036] Both the first binding wire 3 and the second binding wire 4 are iron wires.

[0037] The anchor plate 2 is a flat plate with a through hole in the middle, and a sleeve is vertically fixed at the through hole.

[0038] Example 2 like Figure 3 , Figure 4 , Figure 5 As shown, if the structural size is large and the spacing between the reinforcing bars of the components is large, in order to prevent the polystyrene foam block 1 from sliding, the present invention also includes four diagonal reinforcing bars 8. The four diagonal reinforcing bars 8 are arranged in a rhombus shape, surrounding the polystyrene foam block 1 and contacting the four corners of the polystyrene foam block 1. All four diagonal reinforcing bars 8 are connected to the reinforcing bars 5 of the components. The rest of the structure is the same as in Embodiment 1.

[0039] In the two embodiments described above, the size and shape of the polystyrene foam block 1 are determined according to the size and shape of the different post-tensioning prestressing grooves. The polystyrene foam block 1 is readily available, simple to manufacture, and inexpensive, making it very convenient for use in this invention.

[0040] The manufacturing process of this utility model is as follows.

[0041] First, insert the prestressed corrugated pipe 7, which is already embedded in the reinforcing steel 5 of the steel cage component, into the anchor plate 2 and the polystyrene foam block 1, which has been wrapped and covered with plastic tape or plastic film. Then, make the polystyrene foam block 1 and the anchor plate 2 tightly adhere to each other and tie them firmly with wire. In this way, the polystyrene foam block 1, the anchor plate 2 and the steel cage are made together.

[0042] After the reinforcing cage is placed into the formwork, when installing the end formwork 6, the prestressed corrugated pipe 7 is passed through the reserved hole on the end formwork 6, and then iron wire is used to cross-wrap around the back of the anchor plate 2 and tied to the structural reinforcement 5 from four directions, so that the polystyrene foam block 1 covered by the isolation layer 9 fits tightly with the end formwork 6. If the structure size is large and the spacing between the reinforcing bars is large, in order to prevent the polystyrene foam block 1 covered by the isolation layer 9 from sliding, four diagonal reinforcing bars 8 of not less than φ10 can be set on the reinforcing cage to limit the upper, lower, left, and right positions of the polystyrene foam block 1 covered by the isolation layer 9. In addition, in order to prevent the polystyrene foam block 1 covered by the isolation layer 9 from not fitting tightly with the end formwork 6, polyurethane foam 10 can be used to fill the space between the end formwork 6 and the polystyrene foam block 1 to improve its sealing performance.

[0043] After the concrete is poured, remove the end formwork 6, cut the first binding wire 3, and then take out the polystyrene foam block 1. Since the polystyrene foam block 1 is wrapped with an isolation layer 9, demolding is smooth and polystyrene foam block 1 is not left on the concrete surface.

[0044] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A quick-release post-tensioned prestressing groove positioning and forming device, characterized in that: It includes a polystyrene foam block (1) and an anchor plate (2). The size and shape of the polystyrene foam block (1) are adapted to the size and shape of the post-tensioned prestressing groove. The polystyrene foam block (1) is provided with an axial through hole. The end face of the anchor plate (2) is tightly attached to the bottom surface of the polystyrene foam block (1). The polystyrene foam block (1) and the anchor plate (2) are tied together by one or more first binding wires (3) to form a whole.

2. The quick-release post-tensioning slot positioning and forming device according to claim 1, characterized in that: The polystyrene foam block (1) and the anchor plate (2) are bound together with the component steel bar (5) by one or more second binding wires (4), so that the top surface of the polystyrene foam block (1) is tightly attached to the end mold (6), and the prestressed corrugated pipe (7) passes through the through hole on the anchor plate (2), the axial through hole on the polystyrene foam block (1) and the reserved hole on the end mold (6).

3. The quick-release post-tensioning slot positioning and forming device according to claim 2, characterized in that: It also includes four diagonal bracing bars (8), which are arranged in a rhombus shape, surrounding the polystyrene foam block (1) and contacting the four corners of the polystyrene foam block (1). All four diagonal bracing bars (8) are connected to the structural reinforcement (5).

4. The positioning and forming device for the fast-release post-tensioned prestressed tension groove according to claim 2 or 3, characterized in that: The polystyrene foam block (1) is wrapped with a flexible insulating layer (9).

5. The quick-release post-tensioning slot positioning and forming device according to claim 4, characterized in that: The isolation layer (9) is a plastic film or plastic tape.

6. The quick-release post-tensioning slot positioning and forming device of claim 4, wherein: A polyurethane foam (10) is provided between the contact surfaces of the isolation layer (9) and the end mold (6).

7. The quick-release post-tensioning slot positioning and forming device of claim 2, wherein: Both the first binding wire (3) and the second binding wire (4) are iron wires.

8. The quick-release post-tensioning slot positioning and forming device of claim 1, wherein: The anchor plate (2) is a flat plate with a through hole in the middle.

9. The quick-release post-tensioning slot positioning and forming device of claim 8, wherein: A sleeve is vertically fixed at the through hole on the anchor plate (2).

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