Rectangular pier steel bar embedded double-layer type positioning frame

Abstract

The utility model discloses a rectangular pier reinforcing steel bar pre-embedded double-layer type positioning frame which comprises a frame and positioning frame bodies fixed to the top and the bottom of the frame respectively, and each positioning frame body comprises first positioning rods arranged symmetrically and a second positioning rod fixed between the two first positioning rods. And a plurality of steel bar positioning mechanisms are arranged on the inner sides of the first positioning rod and the second positioning rod. By means of the two layers of positioning frames fixed on the upper portion and the lower portion of the frame, accurate positioning of the embedded steel bars is achieved, compared with a conventional positioning mode, accurate positioning of perpendicularity of the embedded steel bars is achieved, deformation of the embedded steel bars of a pier body and insufficient thickness of a protective layer can be avoided, and overall construction quality of the pier body is improved.

Description

Technical Field

[0001] The utility model relates to a double - layer positioning frame for pre - embedding steel bars of a rectangular pier. Background Art

[0002] Traditionally, the positioning of pre - embedded steel bars generally adopts the method of spot - welding the pre - embedded steel bars to the horizontal steel bars, or making a comb - shaped positioning card as the positioning device for the pre - embedded steel bars. When constructing the steel bar positioning, since there are still many suspended pre - embedded steel bars above the operation plane, once the pre - embedded steel bars are collided due to various reasons, problems such as deformation and bending of the pre - embedded steel bars are likely to occur. This not only affects the quality of steel bar pre - embedding, but also has a certain impact on the subsequent construction. At the same time, when positioning and installing the traditional pier - shaft pre - embedded steel bars, only the accurate plane position of the pre - embedded steel bars can be guaranteed, but it is difficult to control the verticality of the pre - embedded steel bars. If not adjusted in time subsequently, it will be difficult to guarantee the thickness of the pier - shaft protective layer. The steel bars at the defective parts are prone to rust, and the concrete is prone to cracking, resulting in a shortened service life of the bridge and increased maintenance costs. It can be seen that the traditional single - layer positioning frame can no longer meet the construction quality and construction requirements of pier - shaft steel bar pre - embedding in fine management. Content of the Utility Model

[0003] In view of the above problems, the utility model provides a double - layer positioning frame for pre - embedding steel bars of a rectangular pier, effectively solving the problems pointed out in the background art.

[0004] The technical solution adopted by the utility model is as follows:

[0005] A double - layer positioning frame for pre - embedding steel bars of a rectangular pier, comprising a frame, and positioning frames respectively fixed at the top and bottom of the frame. The positioning frame includes symmetrically arranged first positioning rods, and a second positioning rod fixed between the two first positioning rods. A plurality of steel bar positioning mechanisms are arranged on the inner sides of the first positioning rods and the second positioning rod.

[0006] Preferably, the frame includes a first frame and a second frame. The first positioning rod at the top of the frame is fixedly connected to the first positioning rod at the bottom through the first frame, and the second positioning rod at the top of the frame is fixedly connected to the second positioning rod at the bottom through the second frame.

[0007] Preferably, the first frame is fixedly welded to the first positioning rod, and the second frame is fixedly welded to the second positioning rod.

[0008] The way of fixed welding can ensure firm fixation.

[0009] Preferably, special - shaped positioning steel plates are arranged on the inner sides of the first positioning rods and at the inner sides of the joints between the first positioning rods and the second positioning rods, and steel bar positioning mechanisms are arranged on the inner sides of the special - shaped positioning steel plates.

[0010] According to the design of the pier column, positioning steel plates can be arranged inside the positioning frame to meet the shape requirements of the pier body and ensure the overall accuracy of the pier column steel bars.

[0011] Preferably, the first positioning rod and the second positioning rod are fixed by bolts.

[0012] The adjacent first positioning rod and second positioning rod are fixed by bolts, so they can be disassembled from each other. During construction, only assembly along the pier column is required. After construction is completed, they can be removed by disassembly. Therefore, the construction is very convenient. At the same time, when the utility model is lifted, the bolts can be loosened to increase the distance from the embedded steel bars, reduce the resistance during lifting, lower the construction difficulty, and ensure the flexibility of the positioning frame and the accuracy of positioning.

[0013] Preferably, the steel bar positioning mechanisms are evenly distributed inside the positioning frame.

[0014] Preferably, the steel bar positioning mechanism includes a left positioning rib and a right positioning rib that bulge inward, and a positioning groove is formed between the left positioning rib and the right positioning rib.

[0015] The positioning groove formed by combining the left positioning rib and the right positioning rib is used for the positioning and insertion of the embedded steel bars to achieve the positioning of the embedded steel bars.

[0016] Preferably, the steel bar positioning mechanism includes a positioning notch opened on the inner side of the positioning frame and a positioning rib located outside the positioning notch, and the positioning rib is vertically fixed on the positioning frame.

[0017] The positioning notch is used for the insertion of the embedded steel bars, and the positioning rib is used for tying the embedded steel bars tightly to prevent the embedded steel bars from loosening. By combining the positioning notch and the positioning rib, the positioning progress can be further improved, and the construction can be made simpler.

[0018] The utility model realizes the accurate positioning of the embedded steel bars through two layers of positioning frames fixed on the upper and lower parts of the frame. Compared with the conventional positioning method, the utility model also realizes the accurate positioning of the verticality of the embedded steel bars, can avoid the deformation of the embedded steel bars in the pier body and the insufficient thickness of the protective layer, and improve the overall construction quality of the pier body. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural view of the utility model;

[0020] Figure 2 is Figure 1 the top view structural schematic diagram of

[0021] Figure 3 is Figure 1 the side view structural schematic diagram of Detailed implementation manners

[0022] It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs.

[0023] It should be noted that the terms used herein are only for describing the specific implementation manners and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular forms are also intended to include the plural forms. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they specify the presence of the features, steps, operations, devices, components, and / or combinations thereof.

[0024] In addition, in the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the present utility model 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 thus cannot be understood as a limitation of the present utility model.

[0025] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood 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 one or more of such features. In the description of the present utility model, unless otherwise stated, the meaning of "plurality" is two or more, unless otherwise clearly defined.

[0026] In the present utility model, unless otherwise clearly specified and defined, the terms "mounted", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; 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 communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0027] In the present utility model, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on the top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "under" and "beneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or simply means that the horizontal height of the first feature is lower than that of the second feature.

[0028] The following further describes the present utility model in detail through specific embodiments in conjunction with the accompanying drawings.

[0029] As Figures 1-3 shown, a double-layer positioning frame for pre-burying steel bars in a rectangular pier includes a frame 1 and positioning frames 2 respectively fixed at the top and bottom of the frame 1. The positioning frame 2 includes first positioning rods 21 symmetrically arranged with each other and a second positioning rod 22 fixed between the two first positioning rods 21. A plurality of steel bar positioning mechanisms 23 are provided on the inner sides of the first positioning rods 21 and the second positioning rod 22.

[0030] To reduce the influence of the positioning frame 2 on the steel bar binding, the height of the positioning frame 2 should be less than the horizontal steel bar spacing of the pier column to ensure that the construction of the horizontal steel bars of the pier column is not affected.

[0031] The frame 1 includes a first frame 11 and a second frame 12. The first positioning rods 21 at the top of the frame 1 and the first positioning rods 21 at the bottom are fixedly connected through the first frame 11, and the second positioning rods 22 at the top of the frame 1 and the second positioning rods 22 at the bottom are fixedly connected through the second frame 12.

[0032] The first frame 11 is fixedly welded to the first positioning rod 21, and the second frame 12 is fixedly welded to the second positioning rod 22.

[0033] The heights of the first frame 11 and the second frame 12 should be selected according to the actual on-site situation, and it is recommended that the height be preferably about 2 meters.

[0034] Special-shaped positioning steel plates 24 are provided on the inner sides of the first positioning rods 21 and at the inner sides of the joints between the first positioning rods 21 and the second positioning rods 22, and steel bar positioning mechanisms 23 are provided on the inner sides of the special-shaped positioning steel plates 24.

[0035] The first positioning rods 21 and the second positioning rods 22 are fixed through bolts 25.

[0036] The steel bar positioning mechanisms 23 are evenly distributed on the inner side of the positioning frame 2.

[0037] The steel bar positioning mechanism 23 can be implemented in two structures:

[0038] The first type: the steel bar positioning mechanism 23 comprises a left positioning rib 231 and a right positioning rib 232 protruding inwardly, and a positioning groove 233 is formed between the left positioning rib 231 and the right positioning rib 232 .

[0039] The second type: the steel bar positioning mechanism 23 includes a positioning notch 234 provided on the inner side of the positioning frame 2 and a positioning rib 235 located on the outer side of the positioning notch 234 , and the positioning rib 235 is vertically fixed on the positioning frame 2 .

[0040] In order to prevent the embedded steel bars from tipping over into the pier column due to their own weight or external factors, causing the position of the embedded steel bars to shift, after the embedded steel bars are positioned, the embedded steel bars are promptly fixed to the steel bar positioning mechanism 23 using tie wires to ensure the accuracy of the plane and vertical position of the embedded steel bars.

[0041] During the construction of the utility model, the specific construction method is as follows:

[0042] 1. Four embedded steel bars accurately positioned at the four corners of the pier are 20 cm above the top surface of the cap, and a horizontal ribbed support steel bar protruding about 5 cm is welded to each of them as the support point of the positioning frame 2;

[0043] 2. Assemble the positioning frame 2 and the frame 1 on the outside of the embedded steel bars and fix them with bolts 25;

[0044] 3. The embedded steel bars are positioned and fixed by the steel bar positioning mechanism 23, and then the embedded steel bars are tied;

[0045] 4. After the pre-embedded steel bars are tied, the four pre-embedded steel bars at the four corners of the pier are accurately positioned. Each of them is welded with a horizontal ribbed support steel bar protruding about 5 cm above the positioning frame 2 as the support point of the positioning frame 2. The bolts 25 are loosened, and then the positioning frame 2 is moved up to the target position. The positioning frame 2 is supported by the horizontal ribbed support steel bars, and then the bolts 25 are tightened;

[0046] 5. Repeat 3 and 4 until the binding is completed, then loosen the bolt 25 and remove the entire positioning frame 2.

[0047] Finally, it should be noted that the above examples are only specific embodiments of the present invention. Obviously, the present invention is not limited to the above embodiments, and there are many variations. All variations that can be directly derived or associated with the content disclosed by a person skilled in the art from the present invention should be considered as the protection scope of the present invention.

Claims

1. A rectangular pier steel bar embedded double-layer positioning frame, characterized in that: The invention comprises a frame (1), and a positioning frame (2) respectively fixed on the top and bottom of the frame (1), wherein the positioning frame (2) comprises first positioning rods (21) symmetrically arranged with each other, and a second positioning rod (22) fixed between the two first positioning rods (21), and a plurality of steel bar positioning mechanisms (23) are arranged on the inner sides of the first positioning rods (21) and the second positioning rods (22).

2. A rectangular pier steel bar embedded double-layer positioning frame according to claim 1, characterized in that: The frame (1) comprises a first frame (11) and a second frame (12); a first positioning rod (21) at the top of the frame (1) and a first positioning rod (21) at the bottom are fixedly connected via the first frame (11); and a second positioning rod (22) at the top of the frame (1) and a second positioning rod (22) at the bottom are fixedly connected via the second frame (12).

3. A rectangular pier steel bar embedded double-layer positioning frame according to claim 2, characterized in that: The first frame (11) is fixedly welded to the first positioning rod (21), and the second frame (12) is fixedly welded to the second positioning rod (22).

4. A rectangular pier steel bar embedded double-layer positioning frame according to claim 3, characterized in that: A special-shaped positioning steel plate (24) is provided on the inner side of the first positioning rod (21) and the inner side of the connection between the first positioning rod (21) and the second positioning rod (22), and a steel bar positioning mechanism (23) is provided on the inner side of the special-shaped positioning steel plate (24).

5. The rectangular pier steel bar embedded double-layer positioning frame according to claim 1, characterized in that: The first positioning rod (21) and the second positioning rod (22) are fixed by bolts (25).

6. The rectangular pier steel bar embedded double-layer positioning frame according to claim 1, characterized in that: The steel bar positioning mechanisms (23) are evenly distributed on the inner side of the positioning frame (2).

7. A rectangular pier steel bar embedded double-layer positioning frame according to claim 6, characterized in that: The steel bar positioning mechanism (23) comprises a left positioning rib (231) and a right positioning rib (232) protruding inwardly, and a positioning groove (233) is formed between the left positioning rib (231) and the right positioning rib (232).

8. The rectangular pier steel bar embedded double-layer positioning frame according to claim 6, characterized in that: The steel bar positioning mechanism (23) comprises a positioning notch (234) provided inside the positioning frame (2), and a positioning rib (235) located outside the positioning notch (234), wherein the positioning rib (235) is vertically fixed on the positioning frame (2).

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