Bridge pier arc side vertical reinforced concrete protection layer thickness control device

Abstract

The utility model relates to the technical field of concrete protection layer thickness control, and particularly discloses a pier arc side vertical reinforced concrete protection layer thickness control device which comprises a support, a plurality of reinforcing rods are installed on the support, each reinforcing rod is provided with a hook, and vertical steel bars are hooked through the hooks to achieve limiting of the vertical steel bars. The hooks are arranged on the steel formwork, so that the hooks hook the external vertical steel bars in a one-to-one correspondence mode, the external vertical steel bars are limited through the hooks, the hooks generate pulling force on the vertical steel bars at the moment, the vertical steel bars can be prevented from inclining towards the steel formwork, and control over the thickness of the protective layer can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of concrete protective layer thickness control, in particular to a device for controlling the thickness of a vertical reinforced concrete protective layer on the arc side of a pier. Background Art

[0002] Concrete cover refers to the portion of concrete within a concrete component that protects the steel reinforcement from direct exposure. It is the minimum distance from the concrete surface to the outer edge of the nominal diameter of the outermost reinforcement. For post-tensioned prestressed reinforcement, this is the distance from the outer edge of the casing or duct to the concrete surface. This minimum cover thickness is required to ensure that concrete structural components meet durability requirements and effectively anchor the stressed reinforcement.

[0003] In the prior art, the principle of controlling the thickness of the protective layer is basically the same. For example, CN201320543753.8 discloses a device for controlling the protective layer of reinforced concrete columns. The device installs a positioning element on the steel frame. The thickness or diameter of the positioning element is the same as the thickness of the protective layer, thereby ensuring the thickness of the protective layer accurately. Figure 3 Since there are curved surfaces on both sides of the pier, during pouring, the shape of the pier must first be enclosed by the steel formwork 100, and then a plurality of vertical steel bars 200 are arranged in the area enclosed by the steel formwork 100. The vertical steel bars are connected and fixed together by the transverse steel bars 300, and the interlayer 500 between the vertical steel bars 200 and the steel formwork 100 is the reserved thickness of the protective layer. However, during the pouring process, the lateral pressure exerted by the concrete on the curved side on the vertical steel bars 200 is very large, and the vertical steel bars 200 are only reinforced by the diagonal braces 400. The reinforcement force is not enough to overcome the lateral pressure exerted on the vertical steel bars 200, which will cause the vertical steel bars 200 at this location to tilt toward the steel formwork 100. In this way, the protective layer thickness of the concrete pier formed after pouring will be less than the design value, which will directly affect the durability of the concrete pier. Utility Model Content

[0004] The purpose of this utility model is to solve the shortcomings of the existing technology and propose a device for controlling the thickness of the vertical reinforced concrete protective layer on the curved side of a bridge pier. In order to achieve the above purpose, this utility model adopts the following technical solutions:

[0005] This utility model proposes a device for controlling the thickness of the protective layer of vertical reinforced concrete on the curved side of a bridge pier. The device comprises a bracket mounted with a plurality of reinforcing rods, each of which is provided with a hook that engages an external vertical steel bar to limit the position of the vertical steel bar. The bracket comprises a base plate, both sides of which are fixedly connected to side wing plates, one end of each of which is jointly fixed to a curved plate; each reinforcing rod is fixed to the curved plate, and one end of each reinforcing rod is fixed to the base plate.

[0006] Preferably, a fixing block is fixedly connected to the base plate.

[0007] Preferably, each side wing plate is fixedly connected to a reinforcement block.

[0008] Preferably, it further comprises a limiting rod, both ends of which are respectively connected to the side wing plates, each reinforcement rod is fixed to the limiting rod, and the middle part of each reinforcement rod is fixed to the base plate.

[0009] The beneficial effects of the utility model are as follows: when in use, the two pier arc-side vertical reinforced concrete protective layer thickness control devices are respectively placed on both sides of the cast pier and fixed to each other, so that the hooks hook the external vertical steel bars on both sides one by one, and the vertical steel bars are limited by the hooks. At this time, the hooks generate a pulling force on the vertical steel bars, which can prevent the vertical steel bars from tilting toward the steel formwork, and can realize the control of the protective layer thickness. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present invention. The same reference symbols are used throughout the accompanying drawings to denote the same components. In the accompanying drawings:

[0011] Figure 1 This is a structural diagram of a device for controlling the thickness of a vertical reinforced concrete protective layer on the arc side of a bridge pier provided by an embodiment of the utility model;

[0012] Figure 2 This is a diagram showing the use of a device for controlling the thickness of a vertical reinforced concrete protective layer on the arc side of a pier provided by an embodiment of the utility model;

[0013] Figure 3 It is a schematic diagram of pouring bridge piers in the prior art.

[0014] Icons: 1-bracket; 11-base plate; 12-side plate; 13-arc plate; 2-reinforcement rod; 3-hook; 4-limiting rod; 5-fixing block; 6-reinforcement block; 7-main pull rod; 8-auxiliary pull rod; 100-steel formwork; 200-vertical steel bars; 300-horizontal steel bars; 400-diagonal bracing rod; 500-mezzanine. DETAILED DESCRIPTION

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be briefly introduced below in conjunction with the drawings and the description of the embodiments or the prior art. Obviously, the following description of the structures of the drawings is only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention.

[0016] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0017] Examples, such as Figure 1-2 As shown, a device for controlling the thickness of the vertical reinforced concrete cover on the curved side of a bridge pier, according to this embodiment, includes a bracket 1, on which are mounted a plurality of reinforcing rods 2. The bracket 1 includes a base plate 11, with side wing plates 12 fixedly connected to both sides of the base plate 11. One end of each side wing plate 12 is fixedly connected to a curved plate 13. Each reinforcing rod 2 is fixed to the curved plate 13. One end of each reinforcing rod 2 is inserted into a socket on one side of the base plate 11 and welded together using welding equipment. This welding method of inserting the reinforcing rods 2 into the sockets and fixing them to the base plate 11 significantly enhances the connection strength between the two. Each reinforcing rod 2 is provided with a hook 3, which hooks onto a vertical rebar 200 to limit the vertical rebar 200. Similarly, the bracket 1 also includes a limiting rod 4, with both ends of the limiting rod 4 connected to the side wing plates 12. Each reinforcing rod 2 is fixed to the limiting rod 4, and the middle portion of each reinforcing rod 2 is fixed to the base plate 11. The strength of the protective layer thickness control device can be increased and is suitable for pouring bridge piers of different sizes.

[0018] During use, the protective layer thickness control device improved in this embodiment is used on both arc sides of the pier, and the hooks 3 are hooked one by one on the vertical steel bars 200, and the vertical steel bars 200 are limited by the hooks 3. At this time, the hooks 3 generate a pulling force on the vertical steel bars 200, which can prevent the vertical steel bars 200 from tilting toward the steel formwork 100, and can achieve control of the protective layer thickness.

[0019] In order to improve the control effect of the thickness of the protective layer, a fixed block 5 is fixedly connected to the base plate 11. A reinforcement block 6 is fixedly connected to each side wing plate 12. During use, a main pull rod 7 is set between the two fixed blocks 5, and two auxiliary pull rods 8 are set between the two corresponding reinforcement blocks 6. The two auxiliary pull rods 8 are staggered and cross-set, with one auxiliary pull rod 8 located above the main pull rod 7 and the other auxiliary pull rod 8 located below the main pull rod 7. In this way, prestress can be applied to the vertical steel bars 200 by changing the length of the main pull rod 7 and the auxiliary pull rod 8. In this way, during the pouring process, this prestress can just offset the lateral pressure of the concrete on the vertical steel bars 200, so that the thickness of the protective layer can be controlled more stably. At the same time, the protective layer thickness control device improved in this embodiment itself can act as a "reinforcement bar" of the bridge pier, indirectly improving the strength of the bridge pier.

[0020] In short, the above are only preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of the present invention.

Claims

1. A device for controlling the thickness of the vertical reinforced concrete protective layer on the arc side of a bridge pier, characterized in that: The invention comprises a bracket (1), wherein a plurality of reinforcing rods (2) are mounted on the bracket (1), and each reinforcing rod (2) is provided with a hook (3); the hook (3) is used to hook an external vertical steel bar (200) to limit the position of the vertical steel bar (200); wherein, The bracket (1) comprises a base plate (11), both sides of the base plate (11) are fixedly connected to side wing plates (12), and one end of the two side wing plates (12) is commonly fixedly connected to an arc-shaped plate (13); each of the reinforcing rods (2) is fixedly connected to the arc-shaped plate (13), and one end of each of the reinforcing rods (2) is fixed to the base plate (11).

2. The device for controlling the thickness of the vertical reinforced concrete protective layer on the arc side of a bridge pier according to claim 1, characterized in that: A fixing block (5) is fixedly connected to the base plate (11).

3. The device for controlling the thickness of the vertical reinforced concrete protective layer on the arc side of a bridge pier according to claim 1, characterized in that: Each of the side wing plates (12) is fixedly connected to a reinforcement block (6).

4. The device for controlling the thickness of the vertical reinforced concrete protective layer on the arc side of a bridge pier according to claim 1, characterized in that: It also includes a limiting rod (4), both ends of which are respectively connected to the side wing plates (12), each of the reinforcing rods (2) is fixed to the limiting rod (4), and the middle part of each of the reinforcing rods (2) is fixed to the base plate (11).

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