Concrete bracket heightening, transforming and reinforcing structure
By reinforcing and renovating the concrete beef legs in the building structure, the problem that the beef legs in the existing technology cannot meet the needs of use is solved, and the effect of increasing the weight and height of the crane lifting objects on the basis of retaining the original structure is achieved, and the construction cycle and cost are reduced.
Patent Information
- Application Number
- CN202421487414.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-27
- Publication Date
- 2025-05-09
- Estimated Expiration
- 2034-06-27
AI Technical Summary
The concrete horns in existing building structures cannot be met due to the increased demand for use. The traditional demolition or new construction methods have a long construction period and high cost. There is a lack of an effective method to increase the weight and height of the crane lifting objects on the basis of retaining the original structure.
By strengthening and transforming the corrupt legs of the original structural column, the corrupt legs are welded and wrapped with steel plates and fixed by inverted conical anchor bolts to form the corrupt legs, and steel bars and connecting plates are implanted in the grouting material to weld to form the integral connection.
It has achieved the increase in the weight and lifting height of crane lifting objects while retaining the original structure, shortening the construction cycle, reducing the cost of engineering projects, and meeting production needs.
Smart Images
Figure CN222847866U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of reconstruction and reinforcement, and more specifically, to a structure involving the heightening, reconstruction and reinforcement of a concrete corbel. Background Art
[0002] In recent years, with the rapid development of the national economy and urban construction, the continuous improvement of scientific and technological levels, and the increasingly improved production processes, the original structural brackets of some buildings can no longer meet the use needs. The traditional solution is to demolish or rebuild. Considering that the demolition or new construction period is long and will affect the relocation of other equipment, the cost of the project is greatly increased. Therefore, a method of heightening, transforming and reinforcing the structure of concrete brackets can meet the requirements of increasing the weight and lifting height of the crane on the basis of retaining the original structure, shortening the construction period, reducing the cost, meeting the production needs, and having significant technical and economic benefits. Summary of the invention
[0003] The present application provides a concrete corbel heightening and reinforcement structure. In order to retain the original structural corbel columns, reduce the relocation of equipment in the factory, and meet the needs of increased crane lifting weight and lifting height in production technology, the original structural column corbels are reinforced with steel cladding and heightened corbels are reconstructed to meet production needs.
[0004] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions:
[0005] A concrete corbel heightening and reinforcement structure, including a heightened corbel formed by reinforcing the original corbel of a structural column, characterized in that: a steel plate is welded and wrapped according to the size of the original structural column, fixed by a plurality of sets of inverted cone anchor bolts, a heightened corbel is formed above the original corbel, a bolt is welded on the inner steel plate, and a grouting material is poured into the heightened corbel on the original corbel through implanted and tied steel bars and connection plates. Structural adhesive is poured between the steel plate and the structural column.
[0006] By adopting the above technical solution, bolts are welded on the inner side of the steel plate at the heightened corbel to better connect the steel plate with the grouting material. The inner steel plate surface is anchored to the original structural column through the implanted connecting ribs at one end, and the other end is cast into one piece with the grouting material, so that the newly heightened corbel is integrally connected to the original structure. At the same time, there is a tied steel cage inside the heightened corbel steel plate. One end of the main reinforcement of the steel cage is welded to the corbel bottom plate steel plate after lap welding with the connecting plate. The bottom plate steel plate is welded to the original buried plate by plug welding, and fixed to the original corbel with inverted cone anchor bolts around. The other end of the main reinforcement is connected to the steel plate on the heightened corbel by plug welding, and finally the grouting material is poured to make the entire heightened corbel more reasonably and stable. BRIEF DESCRIPTION OF THE DRAWINGS
[0007] Figure 1 It is a schematic diagram of the structure of an embodiment of the present application.
[0008] Figure 2 This is a large-scale drawing of the elevated portion of the corbel in an embodiment of the present application.
[0009] Figure 3 It is a cross-sectional schematic diagram of an embodiment of the present application.
[0010] Figure 4 It is a schematic diagram of the bottom plate of the embodiment of the present application and the connection between the bottom plate and the original corbel buried plate.
[0011] Explanation of the reference numerals in the accompanying drawings: 1. structural column; 2. original corbel; 3. heightened corbel; 4. steel plate; 41. reinforcement steel plate; 42. bottom plate steel plate; 43. original corbel buried plate; 5. inverted cone anchor bolt; 6. steel bar; 61. main reinforcement; 62. hoop reinforcement; 63. connecting reinforcement; 7. connecting plate; 8. bolt; 9. grouting material; 10. plug welding hole. DETAILED DESCRIPTION
[0012] The embodiment of the present application is a concrete corbel heightening and reinforcement structure. Considering the large overall stress, the reinforcement steel plates are all Q355B type 20mm thick steel plates with good performance, and the steel plates are assembled and welded with E50 series welding rods or ER50-6 type welding wires. The anchor bolts used are all M20 inverted cone anchor bolts, the bolts are Φ19x80, and the steel bars used are all ribbed steel bars.
[0013] First, grind the concrete surface of the original structural column 1 and repair the damaged and defective parts. At the same time, all the reinforcement steel plates 4 are ground and rust-free before installation.
[0014] Second, according to the outer dimensions of the original structural column 1, the steel plate is cut into the required size steel plate 4 to wrap the structural column 1, and the cut is cut at the weld foot to ensure the welding quality. The steel bar detector is used to detect the steel bar of the structural column 1, and the position where the anchor bolt 5 is required to be implanted is marked, and the hole is drilled on the steel plate 4 after cutting according to the hole position of the anchor bolt 5.
[0015] Third, the steel plate 4 with holes is assembled and spot welded around the structural column 1, and the anchor bolts 5 are implanted. In order to ensure the installation of the bottom plate steel plate 42 and the steel bars 6 inside the heightened corbel 3, the reinforcement steel plate 41 outside the heightened corbel 3 needs to be assembled and welded after completion. The inner side of the reinforcement steel plate 41 of the heightened corbel 3 is pre-welded with bolts 8.
[0016] Fourth, according to the original corbel 2 surface of the original structural column 1, cut out the required bottom plate steel plate 42, and drill the plug welding holes and anchor bolt holes (first use a steel bar detector to detect the steel bars, and avoid the steel bars when drilling the anchor bolt holes). The bottom plate steel plate 42 is tightly attached to the original corbel buried plate 43, and the middle plug welding hole 10 is welded to connect the two steel plates into one, and then the inverted cone anchor bolts 5 are implanted around the bottom plate steel plate 42 to connect the bottom plate steel plate 42 and the original corbel 2 into one.
[0017] Fifth, after fully welding the inner reinforcement steel plate 41 of the heightened corbel 3 and implanting the connection rib 63, lap weld one end of the main rib 61 with the connection plate 7, weld the connection plate 7 to the bottom plate steel plate 42, tie the hoop reinforcement 62, and form a steel cage inside the heightened corbel 3 with the main rib 61. The other end of the main rib 61 is plug welded to the top surface reinforcement steel plate 41 of the heightened corbel 3 (the top surface reinforcement steel plate has holes for pouring grouting material 9). Finally, weld the reinforcement steel plate 41 on the outside of the heightened corbel 3.
[0018] Sixth, fully weld all steel plates 4 and tighten the inverted cone anchor bolts 5. Pour grouting material 9 into the heightened corbel 3. Then seal the overall corbel heightening structure and pressure-inject structural glue to fill the gap between the steel plate 4 and the concrete surface of the original structural column 1 with structural glue. Finally, grind and remove rust from the outer surface of the structure, and paint and spray fire retardant coating as required.
Claims
1. A concrete corbel heightening, transformation and reinforcement structure, comprising: forming a heightened corbel (3) by reinforcing and strengthening the original corbel (2) of a structural column (1), characterized in that: The steel plate (4) is welded and wrapped according to the size of the original structural column (1), and fixed by multiple groups of inverted cone anchor bolts (5); a stud (8) is welded on the inner steel plate (4) of the heightened corbel (3) formed above the original corbel (2), and is welded by implanted and tied steel bars (6) and a connecting plate (7); grouting material (9) is poured into the heightened corbel (3), and structural adhesive is poured between the steel plate (4) and the structural column (1).
2. The concrete corbel heightening, transformation and reinforcement structure according to claim 1 is characterized in that: The heightened corbel (3) comprises a steel plate (4) welded with bolts (8), and the heightened corbel (3) is provided with steel bars (6) and is filled with grouting material (9).
3. The concrete corbel heightening, transformation and reinforcement structure according to claim 2 is characterized in that: The steel plate (4) comprises a reinforcing steel plate (41), a bottom plate steel plate (42) and an original corbel buried plate (43); the steel bars (6) comprise main bars (61), hoop bars (62) and connecting bars (63).
4. The concrete corbel heightening, transformation and reinforcement structure according to claim 3 is characterized in that: The bottom plate steel plate (42) is connected to the original corbel (2) via inverted cone anchor bolts (5) on all sides, and the bottom plate steel plate (42) is welded and fixed to the original corbel buried plate (43) via plug welding holes (10); the main reinforcement (61) is overlap-welded to the connecting plate (7), and the connecting plate (7) is welded to the bottom plate steel plate (42), and is fixed to the bottom plate steel plate (42) by tying the main reinforcement (61) with the hoop reinforcement (62), and the reinforcement cage is formed, and the connection reinforcement (63) is fixed to the structural column (1) in the manner of embedded reinforcement.