Pre-tensioning method prestress tensioning box structure

Abstract

The pre-tensioning method prestress tensioning box structure comprises a tensioning box, a long-strip-shaped through hole is formed in the tensioning box in the axial direction of the tensioning box, an anchor plate detachably connected with the tensioning box is arranged on one side of the long-strip-shaped through hole, and a penetrating hole is formed in the position, corresponding to the long-strip-shaped through hole, of the anchor plate; the penetrating holes are distributed at intervals in the axial direction of the long-strip-shaped through hole. The anchor plate detachably connected with the tensioning box is arranged on one side of the tensioning box, the anchor plates with different perforation specifications are replaced to meet different tensioning requirements, compared with an existing structure, using is more convenient, and the cost for manufacturing the anchor plate is far lower than the cost for manufacturing a pedestal or a steel die.

Description

Technical Field

[0001] This application relates to the technical field of precast beam tensioning, and particularly to a pre-tensioning prestressed tensioning box structure. Background Art

[0002] The pre-tensioning method is a construction process in which the prestressed tendons are tensioned before pouring concrete, and the tensioned prestressed tendons are temporarily anchored on the pedestal or steel formwork, and then the concrete is poured. By means of the bond between the concrete and the prestressed tendons, prestress is applied to the concrete.

[0003] In the existing construction process, the pedestal or steel formwork can only be applied to the tensioning of single or several similar specifications of prestressed tendons. For prestressed tendons of different specifications, different pedestals or steel forms need to be prepared, which is inconvenient to use and increases the construction cost. Utility Model Content

[0004] Based on this, it is necessary to provide a pre-tensioning prestressed tensioning box structure to overcome the defects in the above background art

[0005] A pre-tensioning prestressed tensioning box structure includes a tensioning box. The tensioning box is provided with a long strip through hole along its axial direction. One side of the long strip through hole is provided with an anchor plate detachably connected to the tensioning box. The anchor plate is provided with a perforation at a position corresponding to the long strip through hole, and a plurality of the perforations are arranged at intervals along the axial direction of the long strip through hole.

[0006] As a preference of the pre-tensioning prestressed tensioning box structure in the present utility model, the tensioning box is further provided with a through slot along its axial direction.

[0007] As a preference of the pre-tensioning prestressed tensioning box structure in the present utility model, the top of the tensioning box is provided with a first lifting ring.

[0008] As a preference of the pre-tensioning prestressed tensioning box structure in the present utility model, clamping members are provided on both sides of the connection between the tensioning box and the anchor plate, and a support member is provided below the connection.

[0009] As a preference of the pre-tensioning prestressed tensioning box structure in the present utility model, there are a plurality of the anchor plates, and the specifications of the perforations on each anchor plate are different.

[0010] As a preference of the pre-tensioning prestressed tensioning box structure in the present utility model, the top of the anchor plate is provided with a second lifting ring.

[0011] Advantages of the Present Utility Model:

[0012] In the present utility model, by arranging an anchor plate detachably connected to the tensioning box on one side of the tensioning box, different anchor plates with different perforation specifications are replaced to meet different tensioning requirements. Compared with the existing structure, it is more convenient to use, and the cost of manufacturing the anchor plate is much lower than the cost of manufacturing the pedestal or steel formwork. Brief Description of the Drawings

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0014] Figure 1 It is a three-dimensional structure schematic diagram of the tension box structure in the embodiment of the present application;

[0015] Figure 2 It is one of the structure schematic diagrams of the tension box in the embodiment of the present application;

[0016] Figure 3 It is the second structure schematic diagram of the tension box in the embodiment of the present application;

[0017] Figure 4 It is the structure schematic diagram of the anchor plate in the embodiment of the present application;

[0018] Description of the reference numerals:

[0019] 1. Tension box; 11. Long strip through hole; 12. First lifting ring;

[0020] 2. Anchor plate; 21. Perforation; 22. Second lifting ring;

[0021] 3. Through slot;

[0022] 4. Clamping member;

[0023] 5. Support member. Detailed Embodiments

[0024] In order to make the above objects, features and advantages of the present application more obvious and understandable, the following will give a detailed description of the specific embodiments of the present application with reference to the drawings. Many specific details are set forth in the following description in order to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein. Those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0025] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present application.

[0026] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0027] In the present application, unless otherwise clearly specified and limited, the terms "mounted", "connected", "coupled", "fixed", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0028] In the present application, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0029] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0030] Example

[0031] This embodiment provides a prestressed tension box structure, such as Figure 1 As shown, it includes a tensioning box 1, and both sides of the tensioning box 1 are provided with long through holes 11 along the axial direction thereof for the screw to pass through, and one side of the long through hole 11 is provided with an anchor plate 2 detachably connected to the tensioning box 1, and the anchor plate 2 is used to cooperate with the clamp to fix the screw during the tensioning process. By replacing the anchor plate 2, the tensioning box structure can be suitable for the tensioning of prestressed tendons of different specifications.

[0032] like Figure 2 and Figure 3 As shown, L-shaped clamping parts 4 are provided on both sides of the connection between the tensioning box 1 and the anchor plate 2, which play a guiding and limiting role for the anchor plate 2. A support member 5 is provided below the connection. The clamping part 4 and the support member 5 cooperate with each other to fix the anchor plate 2 in the tensioning position.

[0033] In this embodiment, the tensioning box 1 can be welded by steel plates, I-beams, etc., is hollow inside and reinforced with partitions, and through seams 3 are formed between adjacent partitions, which can be used to store screws of different specifications required for tensioning.

[0034] In this embodiment, a first lifting ring 12 may be provided on the top of the tensioning box 1 to facilitate the movement and transportation of the tensioning box 1 .

[0035] In this embodiment, the length of the long through hole 11 is greater than the width of the designed prestressed tendons arranged side by side, so that all the prestressed tendons can be tensioned at one time.

[0036] The anchor plates 2 include a plurality of anchor plates 2, and the specifications of the perforations 21 on each anchor plate 2 are different, so as to adapt to the tensioning of prestressed tendons of different specifications. Figure 4 As shown, a through hole 21 is provided at a position corresponding to the anchor plate 2 and the long through hole 11. The diameter of the through hole 21 is 1 mm larger than the diameter of the corresponding screw rod to facilitate the insertion of the screw rod. A plurality of the through holes 21 are arranged at intervals along the axial direction of the long through hole 11, and the number of the through holes 21 is the same as the number of prestressed tendons to be tensioned.

[0037] In this embodiment, a second lifting ring 22 is provided on the top of the anchor plate 2 to facilitate the movement of the anchor plate 2 .

[0038] During use, a pair of tension boxes 1 are arranged on each side of the prestressed tendon. A pair of the tension boxes 1 are arranged side by side at intervals. An anchor plate 2 corresponding to the prestressed tendon to be tensioned is selected and arranged on the side of the tension box 1 away from the prestressed tendon. One end of the screw rod is connected to the clamp, and the other end thereof passes through the anchor plate 2 and the long strip through hole 11 on a pair of tension boxes 1 and then is connected to the prestressed tendon. A clamp is also arranged on the screw rod between a pair of tension boxes 1. A hydraulic component is arranged between a pair of tension boxes 1 and is connected to a pair of tension boxes 1 at both ends respectively, and then the tensioning operation can be started.

[0039] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0040] The above-described embodiments only express several implementation manners of the present application. The description is relatively specific and detailed, but it cannot be understood as a limitation to the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several deformations and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A prestressed tension box structure, comprising a tension box (1), characterized in that: The tensioning box (1) is provided with a long through hole (11) along its axial direction; an anchor plate (2) detachably connected to the tensioning box (1) is provided on one side of the long through hole (11); a through hole (21) is provided at a position corresponding to the long through hole (11); a plurality of the through holes (21) are arranged at intervals along the axial direction of the long through hole (11).

2. The prestressed tension box structure according to claim 1 is characterized in that: The tensioning box (1) is also provided with a through slit (3) along its axial direction.

3. The prestressed tension box structure according to claim 2 is characterized in that: The top of the tensioning box (1) is provided with a first hanging ring (12).

4. The prestressed tension box structure according to claim 3 is characterized in that: A clamping piece (4) is provided on both sides of the connection between the tensioning box (1) and the anchor plate (2), and a supporting piece (5) is provided below the connection.

5. The prestressed tension box structure according to claim 1 is characterized in that: The anchor plates (2) include a plurality of anchor plates, and the specifications of the perforations (21) on each anchor plate (2) are different.

6. The prestressed tension box structure according to claim 5 is characterized in that: A second lifting ring (22) is provided on the top of the anchor plate (2).

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