Prefabricated bridge pier column steel bar positioning device

Abstract

The utility model relates to the technical field of prefabricated bridge piers, and provides a prefabricated bridge pier stud steel bar positioning device which comprises a positioning plate with holes in the ends and an internal supporting frame. A plurality of positioning holes are formed in the end perforated positioning plate; the forming positions and sizes of the plurality of positioning holes are matched with the design positions and design sizes of a plurality of main reinforcements of a reinforcement cage of the prefabricated bridge pier column; a plurality of main reinforcements of the reinforcement cage penetrate through a plurality of positioning holes of the positioning plates with holes in the ends in a one-to-one correspondence manner; the inner supporting frame is supported in the reinforcement cage, and the periphery of the inner supporting frame abuts against main reinforcements of the reinforcement cage. The main reinforcement of the reinforcement cage is positioned through the positioning holes in the positioning plate with the holes in the ends, the main reinforcement is quickly positioned, the interior of the reinforcement cage is supported through the internal supporting frame, it is guaranteed that the main reinforcement is straight, deformation of the main reinforcement is avoided, and the production quality of the prefabricated bridge pier column is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of prefabricated bridge piers, and in particular relates to a prefabricated bridge pier column reinforcement positioning device. Background Art

[0002] Current prefabricated bridges use multiple sections of prefabricated piers for hoisting and docking. Each section of the prefabricated pier consists of pier concrete and a steel skeleton (also known as a steel cage) embedded in the concrete. The steel skeleton includes multiple longitudinal bars (also known as main bars) arranged along the circumference of the pier. Due to the high precision requirements for the docking of component steel bars in prefabricated hoisting, the conventional production method of the steel skeleton of prefabricated bridge piers has the following problems: (1) the method of manually dividing the positions of each main bar and then fixing them has large human errors and requires the cooperation of multiple people; (2) the movement of the steel cage during welding and the heating and cooling of the welding process can cause the main bars at the end to be out of straight or offset, resulting in poor precision in the subsequent hoisting and docking of the prefabricated segments. Utility Model Content

[0003] In response to the above-mentioned problems in the prior art, this application proposes a prefabricated bridge pier steel bar positioning device to solve the problem that the main bars are deformed and displaced during the prefabrication of bridge piers, resulting in difficulty in docking the main bars during the hoisting of the upper and lower segment piers, low installation efficiency and unqualified quality.

[0004] The utility model proposes a prefabricated bridge pier reinforcement positioning device, comprising a positioning plate with holes at the end and an internal support frame; a plurality of positioning holes are provided on the positioning plate with holes at the end; the opening positions and sizes of the plurality of positioning holes match the designed positions and designed sizes of the plurality of main bars of the reinforcement cage of the prefabricated bridge pier; the plurality of main bars of the reinforcement cage pass through the plurality of positioning holes of the positioning plate with holes at the end in a one-to-one correspondence; the internal support frame is supported inside the reinforcement cage, and the outer periphery of the internal support frame abuts against the main bars of the reinforcement cage.

[0005] Furthermore, the end hole positioning plate includes an annular steel plate; the annular steel plate is provided with a plurality of positioning holes spaced apart along its circumference.

[0006] Furthermore, the internal support frame includes an annular support frame; the outer periphery of the annular support frame abuts against the inner sides of all the main bars of the steel cage.

[0007] Furthermore, the annular support frame includes two horizontal angle steels and two vertical angle steels; the two horizontal angle steels and the two vertical angle steels are connected end to end in pairs to form the annular support frame.

[0008] Furthermore, the internal support frame further includes an oblique support member; the oblique support member is supported on the inner side of the annular support frame.

[0009] Furthermore, two ends of the diagonal bracing member are respectively connected to the horizontal angle steel and the vertical angle steel.

[0010] Furthermore, a plurality of positioning opening grooves are provided on the outer periphery of the annular support frame at intervals along its circumferential direction; and the plurality of main ribs are pressed against the plurality of positioning opening grooves in a one-to-one corresponding manner.

[0011] Furthermore, there are multiple internal support frames, which are arranged at intervals along the length direction of the steel cage.

[0012] Furthermore, there are two positioning plates with holes at the end, which are distributed at both ends of the steel cage; and the internal support frame is located between the two positioning plates with holes at the end.

[0013] Furthermore, a release agent layer is provided on the surface of the headband hole positioning plate.

[0014] The beneficial effects of the present invention include: positioning the main reinforcement of the steel cage through the positioning holes on the positioning plate with holes at the end, which can effectively arrange the longitudinal main reinforcement according to the design drawings, without the need for manual initial welding and fixation, and there is no need to worry about the main reinforcement being displaced during the welding process; using the internal support frame to support the interior of the steel cage to ensure that the main reinforcement is straight and avoid deformation of the main reinforcement. The production quality of prefabricated bridge pier segments is improved, and the efficiency and quality of the subsequent lifting of pier segments are guaranteed. In addition, the internal support frame can be removed before the prefabricated pier is poured with concrete, and the positioning plate with holes at the end can be removed after the prefabricated pier is formed. Both can be reused, and the structure is simple and the cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural schematic diagram of the end hole positioning plate of the prefabricated bridge pier reinforcement positioning device of the present invention.

[0016] Figure 2 This is a structural schematic diagram of the internal support frame of the prefabricated bridge pier reinforcement positioning device of the present invention supported within the reinforcement cage.

[0017] In the figure: 1- end positioning plate with hole; 101- annular steel plate; 102- positioning hole;

[0018] 2-Internal support frame; 201-Horizontal angle steel; 202-Diagonal bracing piece; 203-Vertical angle steel; 204-Main reinforcement. DETAILED DESCRIPTION

[0019] The present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0020] like Figure 1-Figure 2 As shown, the prefabricated bridge pier reinforcement positioning device of the present invention includes a positioning plate 1 with holes at the end and an internal support frame 2.

[0021] like Figure 1 As shown, the end-hole positioning plate 1 is provided with multiple positioning holes 102; the positions and sizes of the multiple positioning holes 102 match the designed positions and sizes of the multiple main bars 204 of the reinforcement cage of the prefabricated bridge pier; the multiple main bars 204 of the reinforcement cage pass through the multiple positioning holes 102 of the end-hole positioning plate 1 in a one-to-one correspondence; the end-hole positioning plate 1 includes an annular steel plate 101 with a thickness of 1-2 cm; the annular steel plate 101 is provided with multiple positioning holes 102 at intervals along its circumference. There are at least two end-hole positioning plates 1, mainly located at each end of the reinforcement cage. The interior of the annular steel plate 101 is perforated according to the design requirements of the reinforcement cage. The annular steel plate 101 can be a rectangular ring steel plate or a circular ring steel plate. The size of the annular steel plate 101 is designed according to the cross-sectional dimensions of the prefabricated bridge pier. A main bar 204 of the reinforcement cage is inserted into each positioning hole 102 of the annular steel plate 101. Therefore, the spacing between the main bars 204 of the steel cage can be accurately positioned under the action of the annular steel plate 101. This ensures that the main bars 204 docking deviation meets the design requirements when the upper and lower sections of the prefabricated bridge piers are hoisted, thereby greatly improving the prefabrication accuracy.

[0022] The internal support frame 2 is supported within the rebar cage, with its outer perimeter abutting the cage's main bars 204. Multiple internal support frames 2 are provided, spaced evenly along the cage's length, supporting the cage and positioning the main bars 204. The internal support frames 2 are located between two positioning plates 1 with holes at their ends.

[0023] like Figure 2 As shown, the internal support frame 2 includes an annular support frame and diagonal braces 202 supported on the inner side of the annular support frame. The outer periphery of the annular support frame abuts against the inner sides of all main bars 204 of the steel cage, thereby ensuring that the main bars 204 are straight and prevent deformation.

[0024] The annular support frame includes two horizontal angle steels 201 and two vertical angle steels 203; the two horizontal angle steels 201 and the two vertical angle steels 203 are welded end to end to form an annular support frame. The annular support frame is a rectangular frame. The diagonal bracing members 202 are supported on the inner side of the annular support frame. There are four diagonal bracing members 202, distributed at the four corners of the annular support frame, and the two ends of each diagonal bracing member 202 are welded and fixed to the horizontal angle steel 201 and the vertical angle steel 203 respectively. The horizontal angle steel 201, the vertical angle steel 203 and the diagonal bracing members 202 can all be made of ∟

[0025] 75*5mm angle steels are welded and fixed separately, which has high rigidity and ensures the main reinforcement 204 and stirrups of prefabricated bridge piers are tied in accordance with the specifications.

[0026] In some embodiments, to further constrain the placement of the main bars 204 and improve their positioning accuracy, the annular support frame is provided with multiple positioning slots spaced apart along its circumference. The main bars 204 are positioned against the slots in a one-to-one correspondence. The slots face outward from the reinforcement cage, directly opposite the main bars 204. A portion of the main bars 204 reside within the slots, restricting their circumferential movement.

[0027] When the horizontal steel cage is tied on the frame, the end hole positioning plate 1 is fixed, and the internal support frame 2 is set at equal intervals. The multiple main bars 204 of the steel cage are respectively inserted into the positioning holes 102 of the end hole positioning plate 1, and the end hole positioning plate 1 is used to limit the radial displacement of the main bars 204. After all the main bars 204 of the steel cage pass through the end hole positioning plate 1, multiple internal support frames 2 are supported inside the steel cage so that the internal support frames 2 support the main bars 204 tightly and limit the deformation and bending of the main bars 204. After that, the stirrups of the steel cage are tied or welded. The stirrups are tied in sequence along the length direction of the main bars 204. When they are tied close to the internal support frame 2, the internal support frame 2 is tilted and the internal support frame 2 is taken out of the gap between the main bars 204 to the outside of the steel cage until all the stirrups of the steel cage are tied. At this time, all the internal support frames 2 inside the steel cage are also taken out. Move the rebar cage into the casting cavity formed by the formwork. Apply an isolating agent to the end surface of the perforated positioning plate 1 facing the casting cavity to form an isolating agent layer. Pour concrete into the casting cavity. Once the concrete reaches the demolding strength, remove the formwork and perforated positioning plate 1. Once the concrete reaches the lifting strength, proceed with the hoisting operation.

[0028] The device of the utility model can ensure that the end of the main reinforcement 204 is straight and not deviated, thereby ensuring the lifting and installation efficiency and the construction quality of the pier column, ensuring that the connection and stress-bearing performance of the pier column are good, and can be reused after prefabrication is completed, thereby improving the overall accuracy of the production and lifting construction of the prefabricated component reinforcement cage.

[0029] The above are only preferred embodiments of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be pointed out that for those skilled in the art, various improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A prefabricated bridge pier steel bar positioning device, characterized in that: It includes a positioning plate with holes at the end and an internal support frame; The end hole positioning plate is provided with a plurality of positioning holes; the opening positions and sizes of the plurality of positioning holes match the design positions and design sizes of the plurality of main bars of the steel cage of the prefabricated bridge pier; the plurality of main bars of the steel cage pass through the plurality of positioning holes of the end hole positioning plate in a one-to-one correspondence; The internal support frame is supported inside the steel cage, and the outer periphery of the internal support frame abuts against the main bars of the steel cage.

2. A prefabricated bridge pier steel bar positioning device according to claim 1, characterized in that: The end hole positioning plate comprises an annular steel plate; the annular steel plate is provided with a plurality of positioning holes spaced apart along its circumference.

3. The prefabricated bridge pier reinforcement positioning device according to claim 1, characterized in that: The internal support frame includes an annular support frame; the outer periphery of the annular support frame abuts against the inner sides of all the main bars of the steel cage.

4. A prefabricated bridge pier reinforcement positioning device according to claim 3, characterized in that: The annular support frame includes two horizontal angle steels and two vertical angle steels; the two horizontal angle steels and the two vertical angle steels are connected end to end in pairs to form the annular support frame.

5. A prefabricated bridge pier reinforcement positioning device according to claim 4, characterized in that: The internal support frame further includes an oblique support member; the oblique support member is supported on the inner side of the annular support frame.

6. A prefabricated bridge pier reinforcement positioning device according to claim 5, characterized in that: Two ends of the diagonal bracing member are respectively connected to the horizontal angle steel and the vertical angle steel.

7. The prefabricated bridge pier reinforcement positioning device according to claim 3, characterized in that: The outer periphery of the annular support frame is provided with a plurality of positioning opening grooves at intervals along its circumferential direction; the plurality of main ribs are pressed against the plurality of positioning opening grooves in a one-to-one corresponding manner.

8. The prefabricated bridge pier reinforcement positioning device according to claim 1, characterized in that: There are multiple internal support frames, which are arranged at intervals along the length direction of the steel cage.

9. The prefabricated bridge pier reinforcement positioning device according to claim 1, characterized in that: There are two positioning plates with holes at the end, which are distributed at both ends of the steel cage; the internal support frame is located between the two positioning plates with holes at the end.

10. The prefabricated bridge pier reinforcement positioning device according to claim 1, characterized in that: A release agent layer is provided on the surface of the headband hole positioning plate.

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