Integrated pier column main reinforcement pre-embedded clamp for plain concrete bearing platform

Abstract

An integrated pier column main reinforcement pre-embedded clamp used for a plain concrete bearing platform is composed of a lower round end type steel reinforcement framework, an upper round end type steel reinforcement framework, a middle connecting steel reinforcement keel and a bottom transverse positioning carrying pole beam. The middle connecting steel bar keel is connected between the lower round-end type steel bar framework and the upper round-end type steel bar framework, the bottom transverse positioning carrying pole beam is connected to the lower round-end type steel bar framework, and the two ends of the bottom transverse positioning carrying pole beam are erected on the top face of a bearing platform formwork. The utility model has the advantages and positive effects that: 1, the structure is simple, the assembly and disassembly are convenient, and the structural stability is good; 2, workers are easy to operate, and the pre-embedding accuracy and efficiency are high; 3, the use amount of reinforcing measure ribs is greatly reduced, and the cost is greatly saved; and 4, during construction, the installation is simple, and the positioning is accurate.

Description

Technical Field

[0001] The utility model belongs to the technical field of bridge construction, and particularly relates to an integrated pier column main reinforcement pre-embedded clamp used for a plain concrete cap. Background Art

[0002] At present, the substructure of the bridge, as the foundation of the bridge, needs to have sufficient stability and bearing capacity. The pier is a type of substructure of the bridge. The common pier main reinforcement pre-embedded is composed of two layers of main reinforcement mesh on the pedestal. The pedestal is only equipped with a single layer of steel mesh at the bottom, and there is no structural steel bar on the top and sides. During installation, the upper main reinforcement mesh is used to fix and bind it, and then the main reinforcement is welded or tied to reinforce it. During the process, it is necessary to ensure that the height of the pier main reinforcement is relatively consistent. During the period, the spacing of the upper main reinforcement mesh on the pedestal needs to be adjusted for construction; the double-layer main reinforcement mesh of the pedestal may affect the pre-embedded spacing and protective layer of the pier main reinforcement, and the contact surface with the upper steel mesh is also small, and there is a risk of unreliable binding or welding. Therefore, the pre-embedded main reinforcement of the pier needs to be positioned and fixed by a clamp assembly. Summary of the invention

[0003] The utility model provides an integrated pier column main reinforcement pre-embedded clamp for a plain concrete foundation to solve the technical problem of difficult positioning of pier column reinforcement bars when only a single-layer reinforcement mesh is provided at the bottom of the foundation. The clamp can increase the reinforcement length of the main reinforcement, ensure that the main reinforcement is vertical and not bent, and is not easily misaligned during concrete pouring. Since the clamp has a high turnover efficiency, the construction efficiency can be improved.

[0004] As conceived above, the technical solution of the utility model is: an integrated pier column main reinforcement embedded fixture used for plain concrete pedestals, characterized in that it consists of four parts: a lower round-end type steel bar skeleton, an upper round-end type steel bar skeleton, a middle connecting steel bar keel and a bottom transverse positioning shoulder beam, the middle connecting steel bar keel is connected between the lower round-end type steel bar skeleton and the upper round-end type steel bar skeleton, the bottom transverse positioning shoulder beam is connected to the lower round-end type steel bar skeleton, and its two ends are supported on the top surface of the pedestal formwork.

[0005] Preferably, the lower round-end steel bar skeleton is composed of two parallel channel steels, both ends of the two channel steels are respectively welded with semicircular steel pipes, and the steel pipes are fixedly connected between the two channel steels.

[0006] Preferably, the upper round-end steel bar skeleton is composed of two parallel steel bars, and the two ends of the two steel bars are respectively welded with two connected semicircular steel bars.

[0007] Preferably, the middle connecting steel bar keel is composed of a plurality of steel bars distributed vertically and welded to the lower round-end steel bar skeleton and the upper round-end steel bar skeleton at equal intervals according to the designed size.

[0008] Preferably, the bottom transverse positioning shoulder beam is composed of two I22a I-beams with a length of 5m, which are connected to the lower round-end steel bar skeleton by bolts.

[0009] Preferably, the two channel steels of the lower round-end steel bar skeleton are 6m long [16 channel steels, the diameter of the semicircular steel pipe is φ48mm, and two 1.58m φ48mm steel pipes are welded between the two channel steels.

[0010] Preferably, the upper round-end steel bar skeleton is composed of two parallel arranged 6.2m φ20 steel bars, and the two ends of the two steel bars are respectively welded with two connected semicircular φ20 steel bars with a diameter of 1.8m.

[0011] Preferably, the middle connecting steel keel is composed of 116 φ20 steel bars with a length of 1.1 m distributed vertically.

[0012] The utility model has the following advantages and positive effects:

[0013] 1. The frame of the utility model is formed by welding channel steel, I-beam, steel pipe and steel bar and connecting them with bolts. The overall structure has good stability and is easy to install and disassemble.

[0014] 2. The utility model has a simple structure, is easy for workers to operate, and has accurate and efficient pre-embedding.

[0015] 3. The middle connecting steel keel of the utility model is arranged according to the design spacing of the pre-embedded steel bars of the pier body. When positioning, accurate positioning can be achieved by only placing the pre-embedded steel bars close to the 116 vertical steel bars.

[0016] 4. The utility model has bolt holes on the bottom transverse positioning shoulder beam, which is connected to the flange of the cap template by bolts. It can not only accurately position, but also bear the weight of the embedded steel bars and clamps of the pier body, giving full play to the role of the clamp assembly in the construction of plain concrete caps. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model;

[0018] Figure 2 It is a top view of the lower round-end steel bar skeleton of the utility model;

[0019] Figure 3 It is a top view of the upper round-end steel bar skeleton of the utility model;

[0020] Figure 4 This is a schematic diagram of the connection structure between the channel steel of the lower round-end steel bar skeleton and the bottom transverse positioning shoulder beam. DETAILED DESCRIPTION

[0021] In order to further understand the content, features and effects of the present invention, the following embodiments are listed and described in detail with reference to the accompanying drawings:

[0022] See attached Figure 1-4 The utility model provides an integrated pier column main reinforcement pre-embedded fixture used for a plain concrete pedestal, which consists of four parts: a lower round-end steel bar skeleton, an upper round-end steel bar skeleton, a middle connecting steel bar keel and a bottom transverse positioning shoulder beam. The middle connecting steel bar keel is connected between the lower round-end steel bar skeleton and the upper round-end steel bar skeleton, the bottom transverse positioning shoulder beam is connected to the lower round-end steel bar skeleton, and its two ends are supported on the top surface of the pedestal template.

[0023] Preferably, the lower round-end steel bar skeleton is composed of two parallel channel steels 2, the two channel steels are 6m long [16 channel steels, the two ends of the two channel steels are welded with φ48mm semicircular steel pipes 4, and two 1.58mφ48mm steel pipes 7 are welded between the two channel steels.

[0024] Preferably, the upper round-end steel bar skeleton is composed of two parallel arranged 6.2m long φ20 steel bars 5, and the two ends of the two steel bars are respectively welded with two connected semicircular φ20 steel bars with a diameter of 1.8m.

[0025] Preferably, the middle connecting steel bar keel is composed of 116 φ20 steel bars 3 with a length of 1.1 m, which are vertically distributed and welded to the lower round-end steel bar skeleton and the upper round-end steel bar skeleton at equal intervals according to the designed size.

[0026] Preferably, the bottom transverse positioning shoulder beam 1 is composed of two I22a I-beams with a length of 5m, which are connected to the lower round-end steel bar skeleton by bolts 6.

[0027] The working principle of the utility model is: during the construction of the pedestal, the utility model is installed on the pedestal template, and then the main reinforcement of the pier column is tied to the utility model, and the fixed connection between the utility model and the pedestal template is used to ensure the spacing, elevation and stability of the pre-embedded main reinforcement of the pier column. The utility model can overcome the shortcomings of low pre-embedded main reinforcement accuracy of the pier column, and can also overcome the disadvantages of the deviation of the main reinforcement of the pier column. The utility model is cut in the steel bar factory, assembled and welded on site, and lifted into place by a car crane. When the pedestal template is installed, the utility model is installed on the I-beam shoulder beam at the top of the pedestal template and fastened with bolts to prevent displacement during concrete pouring. The utility model can be reused, which can save a lot of expenses on the use of reinforcement.

[0028] The construction process of this utility model is:

[0029] Step 1: After the installation of the I-beam of the pedestal formwork cross brace is completed, the truck crane lifting fixture is bolted to the I-beam and tightened to reinforce it.

[0030] Step 2: Install the main reinforcement of the pier column close to the vertical reinforcement, tie it firmly with wire, and ensure that the main reinforcement is installed on the same side of the vertical reinforcement to ensure the spacing between the main reinforcement of the pier column.

[0031] The embodiments described above are only used to illustrate the technical ideas and features of the utility model, and their purpose is to enable technicians in the field to understand the content of the utility model and implement it accordingly. The patent scope of the utility model cannot be limited only by this embodiment, that is, any equivalent changes or modifications made to the spirit disclosed by the utility model still fall within the patent scope of the utility model.

Claims

1. An integrated pier column main reinforcement pre-embedded fixture used in a plain concrete cap, characterized by: It consists of four parts: a lower round-end steel bar skeleton, an upper round-end steel bar skeleton, a middle connecting steel bar keel and a bottom transverse positioning shoulder pole beam. The middle connecting steel bar keel is connected between the lower round-end steel bar skeleton and the upper round-end steel bar skeleton, and the bottom transverse positioning shoulder pole beam is connected to the lower round-end steel bar skeleton, with both ends supported on the top surface of the base template.

2. The one-piece pier column main reinforcement pre-embedded fixture used for a plain concrete cap according to claim 1, characterized in that: The lower round-end steel bar skeleton is composed of two parallel channel steels, both ends of the two channel steels are respectively welded with semicircular steel pipes, and a steel pipe is fixedly connected between the two channel steels.

3. The one-piece pier column main reinforcement pre-embedded fixture used for a plain concrete cap according to claim 1, characterized in that: The upper round-end steel bar skeleton is composed of two parallel steel bars, and the two ends of the two steel bars are respectively welded with two connected semicircular steel bars.

4. The one-piece pier column main reinforcement pre-embedded fixture used for a plain concrete cap according to claim 1, characterized in that: The middle connecting steel bar keel is composed of a plurality of steel bars distributed vertically and welded to the lower round-end steel bar skeleton and the upper round-end steel bar skeleton at equal intervals according to the designed size.

5. The one-piece pier column main reinforcement pre-embedded fixture used for a plain concrete cap according to claim 1, characterized in that: The bottom transverse positioning shoulder beam is composed of two I 22a I-beams with a length of 5m, which are connected to the lower round-end steel bar skeleton by bolts.

6. The one-piece pier column main reinforcement pre-embedded fixture used for a plain concrete cap according to claim 2, characterized in that: The two channel steels of the lower round-end steel bar skeleton are 6m long [16 channel steels, the diameter of the semicircular steel pipe is φ48mm, and two 1.58m φ48mm steel pipes are welded between the two channel steels.

7. The integrated pier column main reinforcement pre-embedded fixture used for a plain concrete cap according to claim 3, characterized in that: The upper round-end steel bar skeleton is composed of two parallel 6.2m φ20 steel bars, and the two ends of the two steel bars are respectively welded with two connected semicircular φ20 steel bars with a diameter of 1.8m.

8. The one-piece pier column main reinforcement pre-embedded fixture used for a plain concrete cap according to claim 4, characterized in that: The middle connecting steel keel is composed of 116 φ20 steel bars with a length of 1.1m distributed vertically.

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