Steel bar binding construction method for rolling line top plate girder in limited space
By using support formwork and binding additional main reinforcement and stirrups in metallurgical construction, T-shaped structural beams are formed, which solves the problem of steel bar binding construction in confined spaces and improves the feasibility and quality of construction.
Patent Information
- Application Number
- CN202510644696.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-20
- Publication Date
- 2025-08-05
AI Technical Summary
In metallurgical construction, it is difficult to avoid bolt sleeves, bolts or pipeline holes in the main beam of rolled line roof plate in the confined space, resulting in difficulty in binding steel bars, position elevation is not easy to ensure, affecting structural quality.
The method of supporting formwork and binding additional main reinforcement and additional stirrups is used to form a T-shaped structural beam, adjust the arrangement of the main reinforcement on the upper beam, and combine concrete pouring to form an overall structure to solve the interference problem between the steel bars and the embedded parts.
The feasibility and convenience of the coordinated construction of steel bars and embedded parts are effectively improved, the structural quality is ensured, and a new combined T-shaped structural beam is formed by adjusting the arrangement of steel bars, and the load is shared.
Smart Images
Figure CN120425892A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of metallurgical construction, and in particular to a method for binding steel bars of a rolling mill top plate main beam in a confined space. Background Art
[0002] In the field of metallurgical construction, especially in the heating furnace and main rolling line areas, the equipment foundation is basically a box foundation, the top plate is relatively thick (1-2m), the main beam is large and deep, the reinforcement is dense, and there are embedded bolts, embedded bolt sleeves, metal bellows, reserved holes and various pipelines on the top plate.
[0003] Most of the upper reinforcement in the main beam is arranged in double rows, with a relatively close spacing of 25mm. Multiple rows of reinforcement may also be present at the supports. When bolts, bolt sleeves, or pipeline holes are located in the platform roof area, the reinforcement can be bent to avoid them (typically, the spacing between the top plate reinforcement mesh is between 100-200mm). However, when located within the main beam, the main reinforcement is constrained by the stirrups and cannot be adjusted significantly. The only option is to cut the main reinforcement that interferes with the bolt sleeves or pipeline holes after binding, and then add reinforcement below or on both sides of the bolt sleeves or pipeline holes.
[0004] Since there are many steel bars in the main beam, they are densely arranged and have small spacing, it is very difficult to add new steel bars in the main beam, and the position elevation is difficult to guarantee, which may even affect the structural quality. Summary of the Invention
[0005] In order to solve the above problems in the prior art, the present invention provides a method for binding steel bars of a rolling line top plate main beam in a confined space.
[0006] The present invention provides a method for binding steel bars of a rolling line top plate main beam in a confined space, which adopts the following technical solutions: Supporting formwork, specifically including: erecting a support frame, and then supporting formwork for supporting the main beam, secondary beam and top plate on the top of the support frame; Tie the steel bars in the main beam, secondary beam and top slab; Embed bolt sleeves, bolts or shear grooves; Tie additional main bars and additional stirrups. The additional main bars are arranged on both sides of the main beam. After casting, a T-shaped structural beam is formed. The total number and elevation of the additional main bars and the main bars on the upper part of the beam meet the original load-bearing requirements of the main beam. The additional main bars and the main bars on the upper part of the beam are fixed by tying additional stirrups. Closing the formwork, specifically including: after the bolt sleeves, bolts or shear grooves are installed, closing and reinforcing the side formwork of the formwork; Concrete pouring specifically includes: pouring concrete on the main beam, secondary beam and top plate, so that the main beam, secondary beam and top plate of the T-shaped structure form a whole.
[0007] Optionally, if the upper main reinforcement of the beam has been tied and the adjustment of the spacing of the upper main reinforcement of the beam cannot meet the installation requirements of the bolt sleeves, bolts or shear grooves, the upper main reinforcement of the beam that interferes with the installation will be cut off and removed, and at the same time, a corresponding number of additional main reinforcements will be added on both sides of the main beam, and inverted additional stirrups will be used to tie and fix the upper main reinforcement of the beam and the additional main reinforcement to form a new combined T-shaped structural beam.
[0008] Optionally, if the drawings are reviewed first and the upper main reinforcement of the beam is not tied, the upper main reinforcement of the beam installed with interference bolt sleeves, bolts or shear grooves can be moved to both sides of the main beam as additional main reinforcement, and fixed with additional stirrups to form a new combined T-shaped structural beam.
[0009] The method for tying steel bars for the main beam of the rolling line top plate in a confined space of the present invention includes the following effects: from the perspective of mechanical force, the rectangular main beam is converted into a T-shaped structural beam. When the bolt sleeve, bolt or pipeline hole is in the main beam, the arrangement of the main bars on the upper part of the beam is adjusted to form a new combined structural beam, which is integrated with the top plate after forming and jointly bears the original upper load of the main beam, effectively ensuring the quality and improving the feasibility and convenience of the coordinated construction of steel bars and embedded parts. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 It is a structural schematic diagram of the main beam embedded bolt sleeve according to an embodiment of the present invention.
[0011] Figure 2 It is a structural schematic diagram of the main beam embedded bolts in an embodiment of the present invention.
[0012] Figure 3 It is a structural schematic diagram of a main beam provided with shear grooves in an embodiment of the present invention.
[0013] Figure 4 It is a structural schematic diagram of a main beam provided with additional main reinforcement and additional stirrups in an embodiment of the present invention.
[0014] Explanation of the accompanying symbols: 1. Support frame; 2. Formwork; 3. Main beam; 4. Main reinforcement on the upper part of the beam; 5. Bolt sleeve; 6. Bolt; 7. Shear groove; 8. Additional main reinforcement; 9. Additional stirrups; 10. Top plate. DETAILED DESCRIPTION
[0015] The following combination Figure 1-Figure 4 The present invention is described in further detail.
[0016] The embodiment of the present invention discloses a method for binding steel bars of a rolling line top plate main beam in a confined space. Figure 1-Figure 4 The construction method of steel bar binding of the main beam of the rolling line top plate in confined space includes the following: The supporting formwork 2 specifically includes: erecting the supporting frame 1, and then supporting the formwork 2 for supporting the main beam 3, the secondary beam and the top plate 10 on the top of the supporting frame 1.
[0017] Tying up the steel bars in the main beam 3 , the secondary beam and the top plate 10 specifically includes: tying up the various steel bars in the main beam 3 , the secondary beam and the top plate 10 on the top of the formwork 2 according to the process.
[0018] Embed the bolt sleeve 5, bolt 6 or shear groove 7.
[0019] The additional main reinforcement 8 and the additional stirrups 9 are tied, specifically including: if the upper main reinforcement 4 of the beam has been tied, and the spacing of the upper main reinforcement 4 of the beam cannot meet the installation of the bolt sleeve 5, the bolt 6 or the shear groove 7 by adjusting the spacing, the upper main reinforcement 4 of the beam that interferes with the installation will be cut off and removed, and at the same time, a corresponding number of additional main reinforcements 8 will be added on both sides of the main beam 3, and the inverted additional stirrups 9 will be used to tie and fix them to the upper main reinforcement 4 of the beam and the additional main reinforcement 8 to form a new combined T-shaped structural beam.
[0020] If the drawings are reviewed first and the upper main reinforcement 4 of the beam is not tied, the upper main reinforcement 4 of the beam can be adjusted to two rows if it is a single row of steel bars. If there are more upper main reinforcement 4 of the beam or more than two rows, the upper main reinforcement 4 of the beam that interferes with the bolt sleeve 5, bolt 6 or shear groove 7 will be adjusted to both sides of the main beam 3 to be used as additional main reinforcement 8, and tied and fixed with additional stirrups 9, thereby forming a new combined T-shaped structural beam.
[0021] Closing the formwork 2 specifically includes: after the bolt sleeve 5, the bolt 6 or the shear groove 7 are installed, closing and reinforcing the side formwork of the formwork 2.
[0022] Pouring concrete specifically includes: pouring concrete on the main beam 3, the secondary beam and the top plate 10, so that the main beam 3, the secondary beam and the top plate 10 of the T-shaped structure form an integral whole.
[0023] The method for tying steel bars for the main beam of the rolling line top plate in a confined space according to an embodiment of the present invention includes the following effects: from the perspective of mechanical force, the rectangular main beam 3 is converted into a T-shaped structural beam. When the bolt sleeve 5, bolt 6 or pipeline hole is in the main beam 3, the arrangement of the main reinforcement 4 on the upper part of the beam is adjusted to form a new combined T-shaped structural beam, which is integrated with the top plate 10 after forming, and jointly bears the original upper load of the main beam 3 to ensure quality. When encountering the following two situations, corresponding construction is carried out.
[0024] When the reinforcement of the main beam 3 has been tied and cannot be removed, it is only necessary to cut off the upper main reinforcement 4 of the beam that interferes with the bolt sleeve 5, bolt 6 or shear groove 7 and add a corresponding number of additional main reinforcement 8 on both sides of the main beam 3, and tie additional stirrups 9, which is convenient for construction.
[0025] When the reinforcement of the main beam 3 is not tied, the upper main reinforcement 4 of the beam that interferes with the bolt sleeve 5, bolt 6 or shear groove 7 is directly placed on both sides of the main beam 3 as additional main reinforcement 8, and additional stirrups 9 are tied without increasing the number of load-bearing main reinforcements.
[0026] It is only necessary to adjust the steel bar arrangement of the main reinforcement 4 on the upper part of the beam to ensure the elevation position and number of the load-bearing main reinforcement on the upper part of the beam, and then integrate it with the top plate 10 after casting to form a hidden beam T-shaped structural beam, which effectively ensures the construction quality and improves the feasibility and convenience of the coordinated construction of steel bars and embedded parts.
[0027] The above are all preferred embodiments of the present invention, and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.
Claims
1. A method for tying steel bars for a top plate main beam of a rolling line in a confined space, characterized by: Includes the following: The supporting formwork (2) specifically comprises: erecting a supporting frame (1), and then supporting a formwork (2) on the top of the supporting frame (1) for supporting the main beam (3), the secondary beam and the top plate (10); tying the steel bars in the main beam (3), the secondary beam and the top plate (10); Embedding bolt sleeves (5), bolts (6) or shear grooves (7); Additional main reinforcement (8) and additional stirrups (9) are tied, the additional main reinforcement (8) is arranged on both sides of the main beam (3), and a T-shaped structural beam is formed after casting. The total number and elevation of the additional main reinforcement (8) and the main reinforcement (4) on the upper part of the beam meet the original force requirements of the main beam (3), and the additional main reinforcement (8) and the main reinforcement (4) on the upper part of the beam are tied and fixed by the additional stirrups (9); Closing the template (2), specifically comprising: after the bolt sleeve (5), the bolt (6) or the shear groove (7) are installed, closing and reinforcing the side template of the template (2); The concrete pouring specifically includes: pouring concrete on the main beam (3), the secondary beam and the top plate (10), so that the main beam (3), the secondary beam and the top plate (10) of the T-shaped structure form an integral whole.
2. The method for tying steel bars of a rolling line top plate main beam in a confined space according to claim 1 is characterized in that: If the upper main reinforcement (4) of the beam has been tied, and the spacing of the upper main reinforcement (4) of the beam cannot be adjusted to meet the installation requirements of the bolt sleeve (5), the bolt (6) or the shear groove (7), the upper main reinforcement (4) of the beam that interferes with the installation is cut off and removed, and at the same time, a corresponding number of additional main reinforcements (8) are added on both sides of the main beam (3), and inverted additional stirrups (9) are used to tie and fix the upper main reinforcement (4) and the additional main reinforcement (8) to form a new combined T-shaped structural beam.
3. The method for tying steel bars of a rolling line top plate main beam in a confined space according to claim 1 is characterized in that: If the drawings are reviewed first and the upper main reinforcement (4) of the beam is not tied, the upper main reinforcement (4) of the beam installed by the interference bolt sleeve (5), bolt (6) or shear groove (7) can be moved to both sides of the main beam (3) as additional main reinforcement (8), and tied and fixed with additional stirrups (9) to form a new combined T-shaped structural beam.