Prestress tension hole reserved L-shaped steel bar structure

Abstract

The utility model relates to a prestress tension hole reserved L-shaped steel bar structure which comprises a concrete plate and reserved tension grooves, the reserved tension hole is formed in the middle of the concrete plate, plate ribs are evenly and fixedly arranged on the four sides of the concrete plate, reserved steel bars are installed on the four sides of the reserved tension hole respectively, and the reserved tension grooves are formed in the concrete plate. The plate ribs are fixedly connected with the reserved steel bars, prestressed tendons are arranged in the reserved tensioning grooves, metal corrugated pipes are installed on the prestressed tendons, spiral tendons are installed on one sides of the metal corrugated pipes, anchor bearing plates are installed on the spiral tendons, anchor plates are installed on the anchor bearing plates, and the anchor plates are fixedly connected with the prestressed tendons. Through the structures such as the reserved reinforcing steel bars, the reserved tensioning holes, the prestressed tendons, the metal corrugated pipes and the anchor bearing plates, the problems that a large number of common reinforcing steel bars need to be cut and welded in the reserved tensioning holes, the construction procedure is complex, and the construction difficulty is large are solved.

Description

Technical Field

[0001] This application relates to the field of building engineering technology, and in particular to a prestressed tensioning opening reserved with L-shaped steel reinforcement structure. Background Technology

[0002] With the rapid development of the construction industry, large-span, large-space, and heavy-load public buildings are becoming increasingly common, leading to the widespread application of prestressed concrete technology. However, the overlapping and coordinated operations of prestressed construction with other trades have also brought about problems such as complex construction procedures and high operational difficulty, particularly concerning the crucial step of prestressing tensioning.

[0003] In bonded prestressed structures, this process requires reserving tensioning openings in the original structural slab for tensioning. At the same time, it also requires cutting and welding the reinforcing bars of the original structural slab, which damages the reinforcing bars and increases the complexity of construction, bringing great inconvenience and risks to the construction.

[0004] Therefore, existing technologies have shortcomings and need to be improved. Summary of the Invention

[0005] This application provides a pre-stressed tensioning opening with an L-shaped steel reinforcement structure, which solves the problem of the need to cut and weld a large number of ordinary steel bars, resulting in complex construction procedures and high construction difficulty.

[0006] In a first aspect, this application provides a prestressed tensioning opening with a reserved L-shaped steel reinforcement structure, including a concrete slab and a reserved tensioning groove. The reserved tensioning opening is provided in the middle of the concrete slab, and slab reinforcement is uniformly fixed on all four sides of the concrete slab. Reserved steel reinforcement is installed on each of the four sides of the reserved tensioning opening. The slab reinforcement is fixedly connected to the reserved steel reinforcement. Prestressing tendons are provided in the reserved tensioning groove. A corrugated metal pipe is installed on the prestressing tendons. A spiral reinforcement is installed on one side of the corrugated metal pipe. An anchor plate is installed on the spiral reinforcement. An anchor plate is installed on the anchor plate. The anchor plate is fixedly connected to the prestressing tendons.

[0007] Optionally, the slab reinforcement and the reserved reinforcement are provided in a one-to-one correspondence, and the slab reinforcement and the reserved reinforcement are tied and fixed together.

[0008] Optionally, the prestressing tendon is a bonded prestressed steel strand, and the metal corrugated pipe is a corrugated pipe corresponding to the bonded prestressed steel strand.

[0009] Optionally, after the prestressed tendons are tensioned, the reserved reinforcing bars are welded together for fixation.

[0010] Optionally, the spiral reinforcement is a spiral reinforcement corresponding to bonded prestressed steel strands.

[0011] Optionally, the anchor plate is an anchor plate corresponding to the bonded prestressed steel strand, and the reserved tensioning hole edge is supported by formwork and concrete is poured outside the reserved tensioning hole area.

[0012] Optionally, the reserved reinforcing bars are laid flat and straightened, and the reserved reinforcing bars are fixedly connected by welding.

[0013] Optionally, the diameter and spacing of the reserved reinforcing bars are consistent with those of the slab reinforcement.

[0014] Optionally, the reserved reinforcing bars are arranged in an L-shape.

[0015] Optionally, the anchor plate is an anchor plate with bonded prestressed steel strands.

[0016] The technical solutions provided in this application have the following advantages compared with the prior art:

[0017] This embodiment of the application utilizes a structure including pre-reserved reinforcing bars, pre-reserved tensioning openings, prestressing tendons, corrugated metal pipes, and anchor plates. Reinforcing bars are pre-reserved at the pre-reserved tensioning openings in an L-shape. These pre-reserved reinforcing bars are installed and tied to the slab reinforcement, ensuring consistency in diameter and spacing. The tying length meets specifications. Formwork is erected at the edge of the pre-reserved tensioning opening, and concrete is poured outside the opening area. After tensioning the bonded prestressing tendons, the vertical pre-reserved reinforcing bars are laid flat and straightened, and then connected by welding. This solution addresses the problems of requiring extensive cutting and welding of ordinary reinforcing bars for pre-reserved tensioning openings, which leads to complex construction procedures and significant construction difficulties. Attached Figure Description

[0018] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0021] Figure 1 This is a schematic diagram of the prestressed tensioning node structure under the slab provided in this application.

[0022] Figure 2 This is a schematic diagram of the pre-reserved tensioning hole structure on the plate surface provided in this application.

[0023] Figure 3 This is a schematic diagram of the prestressed tensioning node structure under the slab provided in this application.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Concrete slab; 2. Slab reinforcement; 3. Reserved tension opening; 4. Corrugated metal pipe; 5. Spiral reinforcement; 6. Anchor plate; 7. Anchor plate; 8. Prestressed tendon; 9. Reserved tension groove; 10. Reserved steel bar. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0027] The following disclosure provides numerous different embodiments or examples for implementing various structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0028] For ease of description, spatial relative terms may be used in the text to describe the relative position or movement of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "front," "back," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure undergoes a positional flip, orientation change, or change of motion, these directional indications will change accordingly. For instance, an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptors used in the text will be interpreted accordingly.

[0029] To address the technical problems in the prior art, this application provides a prestressed tensioning opening reserved L-shaped steel reinforcement structure. This structure, consisting of pre-reserved steel bars, a pre-reserved tensioning opening, prestressing tendons, corrugated metal pipes, and anchor plates, allows for the pre-reserved steel bars to be placed at the tensioning opening in an L-shape. The pre-reserved steel bars are installed and tied to the slab reinforcement, maintaining the same diameter and spacing. The tying length must meet specifications. Formwork is erected at the edge of the pre-reserved tensioning opening, and concrete is poured outside the opening area. After tensioning the bonded prestressing tendons, the vertical pre-reserved steel bars are laid flat and straightened, and then connected by welding. This solution addresses the problems of requiring extensive cutting and welding of ordinary steel bars for pre-reserved tensioning openings, resulting in complex construction procedures and significant construction difficulties.

[0030] Figure 1-3 An L-shaped steel reinforcement structure for a prestressed tensioning opening provided in this application embodiment includes a concrete slab 1 and a prestressed tensioning groove 9. A prestressed tensioning opening 3 is provided in the middle of the concrete slab 1. Slab reinforcement 2 is uniformly fixed on the four sides of the concrete slab 1. Prestressed steel reinforcement 10 is installed on the four sides of the prestressed tensioning opening 3. The slab reinforcement 2 and the prestressed steel reinforcement 10 are arranged in a one-to-one correspondence. The diameter and spacing of the prestressed steel reinforcement 10 are consistent with those of the slab reinforcement 2. The prestressed steel reinforcement 10 is arranged in an L-shape. The prestressed steel reinforcement 10 is laid flat and straightened. The prestressed steel reinforcement 10 is fixedly connected by welding. The slab reinforcement 2 and the prestressed steel reinforcement 10 are tied and fixedly installed. The slab reinforcement 2 and the prestressed steel reinforcement 10 are fixedly connected. A prestressing tendon 8 is provided in the prestressed tensioning groove 9. A metal corrugated pipe 4 is installed on the prestressing tendon 8. A spiral reinforcement 5 is installed on one side of the metal corrugated pipe 4. An anchor plate 6 is installed on the spiral reinforcement 5. An anchor plate 7 is installed on the anchor plate 6. The anchor plate 7 is fixedly connected to the prestressing tendon 8.

[0031] In this utility model, after the prestressing tendons 8 are tensioned, the reserved reinforcing bars 10 are welded and fixedly connected. Through the structure of reserved reinforcing bars 10, reserved tensioning openings 3, prestressing tendons 8, corrugated metal pipes 4 and anchor plates 6, etc., the reserved reinforcing bars 10 are reserved at the reserved tensioning openings 3. The reinforcing bars are L-shaped. The reserved reinforcing bars 10 are installed and tied and fixed to the slab reinforcement 2. The diameter and spacing of the reserved reinforcing bars 10 and the slab reinforcement 2 are consistent. The binding length should meet the specifications. Formwork is erected at the edge of the reserved tensioning openings 3 and concrete is poured outside the area of ​​the reserved tensioning openings 3. After the bonded prestressing tendons 8 are tensioned, the vertical reserved reinforcing bars 10 are laid flat and straightened. The reserved reinforcing bars 10 are connected by welding. This solves the problem of the need to cut and weld a large number of ordinary reinforcing bars for the reserved tensioning openings, which makes the construction process complicated and the construction difficult.

[0032] Please continue reading. Figure 1-3Prestressing tendon 8 is a bonded prestressed steel strand. The specifications and dimensions of the steel strand are determined based on calculations. Corrugated metal pipe 4 corresponds to the corrugated pipe for the bonded prestressed steel strand. The inner diameter of the corrugated metal pipe should be selected according to the number of prestressing tendons in the drawings. The wall thickness and other parameters of the corrugated pipe must meet the specifications. Spiral reinforcement 5 corresponds to the spiral reinforcement for the bonded prestressed steel strand. The diameter, inner diameter, and number of turns of the spiral reinforcement should be determined based on calculations of the local bearing capacity of the concrete. Anchor plate 6 corresponds to the anchor plate for the bonded prestressed steel strand. The diameter and number of prestressed steel strands are determined. Anchor plate 7 corresponds to the anchor plate for bonding prestressed steel strands, and is determined according to the diameter and number of prestressed steel strands. Formwork is erected at the edge of the reserved tensioning opening 3, and concrete is poured in the area excluding the reserved tensioning opening 3. The reserved tensioning opening 3 should be determined based on factors such as the arrangement of prestressed tendons, the number of prestressed tendons, the size of the tensioning end anchorage, and the arrangement position of the anchorage. The final size should also be determined by considering the actual on-site construction conditions.

[0033] The working principle and usage of this utility model:

[0034] During use, a steel bar 10 is reserved at the pre-reserved tensioning opening 3. The steel bar is L-shaped. The reserved steel bar 10 is installed and tied to the slab reinforcement 2. The diameter and spacing of the reserved steel bar 10 and the slab reinforcement 2 are consistent. The binding length should meet the specifications. Formwork is erected at the edge of the pre-reserved tensioning opening 3 and concrete is poured outside the area of ​​the pre-reserved tensioning opening 3. After the bonded prestressing tendon 8 is tensioned, the vertical reserved steel bar 10 is laid flat and straightened. The reserved steel bar 10 is connected by welding. This avoids the need to cut and weld a large number of ordinary steel bars on site when reserving the tensioning opening. It can ensure a simplified construction process on site, reduce hot work, and greatly improve the convenience of on-site construction.

[0035] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0036] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0037] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0038] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0039] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0040] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. The illustrative expressions of the above terms in this specification should not be construed as necessarily referring to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0041] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Since these modifications and variations fall within the scope of the claims and their equivalents, this application also intends to include these modifications and variations.

[0042] The above description describes specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A prestressed tension hole L-shaped steel structure reserved for the structure, characterized by: The utility model relates to a concrete slab and a reserved tension slot, the middle position of the concrete slab is equipped with a reserved tension hole, the four sides of the concrete slab are evenly fixed with slab reinforcement, the four sides of the reserved tension hole are respectively equipped with reserved steel bars, the slab reinforcement is fixedly connected with the reserved steel bars, the reserved tension slot is equipped with a prestressed tendon, the prestressed tendon is equipped with a metal bellows, the metal bellows is equipped with a spiral tendon on one side, the spiral tendon is equipped with an anchor pad, the anchor pad is equipped with an anchor plate, and the anchor plate is fixedly connected with the prestressed tendon.

2. The prestressed tensioning hole L-shaped steel bar structure reserved according to claim 1, characterized in that: The slab reinforcement and the reserved steel bars are one-to-one correspondence, and the slab reinforcement and the reserved steel bars are fixedly installed by binding.

3. The prestressed tensioning hole L-shaped steel bar structure reserved according to claim 1, characterized in that: The prestressed tendon is a bonded prestressed steel strand, and the metal bellows is a bellows corresponding to the bonded prestressed steel strand.

4. The prestressed tensioning hole L-shaped steel bar structure reserved according to claim 1, characterized in that: After the prestressed tendon is tensioned, the reserved steel bars are fixedly connected by welding.

5. The prestressed tensioning hole L-shaped steel bar structure reserved according to claim 1, characterized in that: The spiral tendon is a spiral tendon corresponding to the bonded prestressed steel strand.

6. The prestressed tensioning hole L-shaped steel bar structure reserved according to claim 1, characterized in that: The anchor plate is an anchor plate corresponding to the bonded prestressed steel strand, and the reserved tension hole edge is supported and poured with concrete except the reserved tension hole area.

7. The prestressed tensioning hole L-shaped steel bar structure reserved according to claim 6, characterized in that: The reserved steel bars are flat and straight, and the reserved steel bars are fixedly connected by welding.

8. The prestressed tensioning hole L-shaped steel bar structure reserved according to claim 7, characterized in that: The diameter and spacing of the reserved steel bars are consistent with the slab reinforcement. 9.The prestressed tensioning hole L-shaped steel structure reserved according to claim 8, characterized in that: The reserved steel bars are L-shaped. 10.The prestressed tensioning hole L-shaped steel structure reserved according to claim 1, characterized in that: The anchor pad is an anchor pad corresponding to the bonded prestressed steel strand.

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