Steel plate structure for reinforcing concrete beam column

Abstract

The steel plate structure comprises a first concrete beam, a second concrete beam is attached to the end of the first concrete beam, reinforcing side plate bodies are attached to the left side face and the right side face of the first concrete beam respectively, reinforcing side plate flanges are connected to the upper ends of the reinforcing side plate bodies, and the reinforcing side plate flanges are connected to the upper ends of the reinforcing side plate bodies respectively. A reinforcing bottom plate is attached to the lower side of the first concrete beam, and the reinforcing bottom plate and the reinforcing side plate body are connected through a fillet weld; chemical anchor bolts are implanted in the first concrete beam and the second concrete beam, one end of each chemical anchor bolt penetrates through the corresponding reinforcing side plate body, and the end, extending out of the corresponding reinforcing side plate body, of each chemical anchor bolt is in threaded connection with a nut. The steel plate structure for reinforcing the concrete beam column is simple in structure, convenient to install and low in manufacturing cost, the reinforcing side plate and bottom plate assembly can effectively improve the flexural rigidity of an existing concrete beam and improve the stress performance of the existing concrete beam, the reinforcing plate does not occupy the clearance of the bottom of the existing concrete beam, and the using function of a building is not affected.

Description

Technical Field

[0001] The utility model relates to the technical field of concrete beam and column reinforcement, in particular to a steel plate structure for reinforcing concrete beams and columns. Background Art

[0002] During the reasonable working life of a building, due to changes in its function or purpose, or the need for later decoration, higher requirements are often placed on the bearing capacity of the original structure. For the reinforcement of existing concrete beams, the traditional approach is to increase or widen the cross-section of the concrete beam, that is, the cross-section is increased from the original b*h to (b+△b)*(h+△h) to increase its bending stiffness. However, it is more troublesome to implement, as it is necessary to deal with the problem of the anchor connection between the newly added steel bars and the existing concrete columns and beams, and to solve the problem of how to pour the newly added concrete. It is also difficult to ensure that the new and old concrete are tightly combined without cracking. At the same time, the cross-section of the structure reinforced with traditional technology will inevitably increase, affecting the building clearance. If the increase in the beam bending moment exceeds 40% of the original structural resistance, and the tensile edge of the positive bending moment is reinforced with bonded steel plates, the crack width and stiffness of the reinforced structure often cannot meet the requirements.

[0003] Therefore, we proposed a steel plate structure for reinforcing concrete beams and columns to solve the above-mentioned problems. Utility Model Content

[0004] The utility model aims to provide a steel plate structure for reinforcing concrete beams and columns, so as to solve the problem that the reinforcement operation of existing concrete beams in the current market is troublesome to implement, and the structural cross-section after reinforcement will inevitably increase, affecting the building clearance.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a steel plate structure for reinforcing concrete beams and columns, comprising a first concrete beam, a second concrete beam being bonded to the end of the first concrete beam, a reinforcing side plate being bonded to the left and right sides of the first concrete beam, a reinforcing side plate flange being connected to the upper end of the reinforcing side plate, a reinforcing bottom plate being bonded to the lower side of the first concrete beam, and the reinforcing bottom plate and the reinforcing side plate being connected by fillet welds;

[0006] Chemical anchor bolts are implanted in the first concrete beam and the second concrete beam. One end of the chemical anchor bolts penetrates the reinforced side plate body, and one end of the chemical anchor bolts extending out of the reinforced side plate body is threadedly connected with a nut.

[0007] Preferably, a reinforcement rod is connected between the reinforced side plate body and the reinforced side plate flange, memory metal is connected to the outer side grooves of the reinforced side plate body and the reinforced bottom plate, and the outside of the memory metal is respectively adhered to a fixing plate a and a fixing plate b, the fixing plate a is fixed to the outer side of the reinforced side plate body by bolts, and the fixing plate b is fixed to the upper side of the reinforced bottom plate by bolts.

[0008] Preferably, the reinforcing side panel body and the reinforcing side panel flange are bent into an inverted "L" shape, and the width of the reinforcing side panel flange is 30 to 50 mm.

[0009] Preferably, the width of each side of the reinforced bottom plate from the reinforced side plate body is 10 to 25 mm, and the reinforced bottom plate and the reinforced side plate body are arranged perpendicular to each other.

[0010] Preferably, the memory metal surrounds the outside of the reinforced side plate body and the reinforced bottom plate, and the memory metal is evenly distributed outside of the reinforced side plate body and the reinforced bottom plate.

[0011] Preferably, the reinforcement rods are distributed in an inclined manner, and the reinforcement rods, chemical anchor bolts and memory metals are distributed in an alternating manner.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] (1) The steel plate structure for reinforcing concrete beams and columns fully utilizes the characteristics of light weight and high strength of steel plate components. The reinforcing steel plate is organically combined with the existing concrete beams through chemical anchor bolts for joint force, so as to achieve the purpose of reinforcing the existing concrete beams. The bending stiffness and bearing capacity of the existing concrete beams are improved through the steel plate components, effectively solving the problems of small cross-sectional height of the existing concrete beams, insufficient bottom tensile steel bars and transverse shear stirrups. There is no need to increase the original structural cross-section, add new stress-bearing steel bars, or pour new concrete. There is no wet operation during the implementation process, the overall force is reasonable, the operation is simple, the cost is low, and the economic benefits are good.

[0014] (2) The steel plate structure for reinforcing concrete beams and columns has a simple structure, is easy to install, and has a low cost. The reinforced side plate and bottom plate assembly can effectively improve the bending stiffness of the existing concrete beams and improve their stress performance. The reinforced plate does not occupy the clearance at the bottom of the existing concrete beams and does not affect the use function of the building.

[0015] (3) The steel plate structure used for reinforcing the concrete beam and column, the stretched memory metal shrinks due to the heat of the high-temperature glass glue, and its shrinkage force is used to provide tensioning force for the reinforcing side plate body and the reinforcing side plate flange, so as to constrain it and make it tightly clamped on the outside of the first concrete beam, thereby further improving the reinforcement of the first concrete beam. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model;

[0018] Figure 3 It is a schematic diagram of the connection structure of the reinforced side plate body and the reinforced side plate flange of the utility model;

[0019] Figure 4 For this utility model Figure 3 A is an enlarged structural diagram;

[0020] Figure 5 This is a schematic diagram of the cross-sectional structure of the reinforced bottom plate of the utility model;

[0021] Figure 6 This is a schematic diagram of the memory metal structure of the utility model;

[0022] Figure 7 This is a schematic diagram of the structure of the reinforced bottom plate of the utility model when viewed from above.

[0023] In the figure: 1. first concrete beam; 2. second concrete beam; 3. reinforced side plate; 4. reinforced side plate flange; 5. reinforced bottom plate; 6. chemical anchor bolts; 7. nuts; 8. fillet weld; 9. memory metal; 10. fixing plate a; 11. fixing plate b; 12. bolts; 13. reinforcement rod. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-Figure 7 The utility model provides the following technical solutions: a steel plate structure for reinforcing concrete beams and columns, comprising a first concrete beam 1, a second concrete beam 2 being bonded to the end of the first concrete beam 1, a reinforcing side plate 3 being bonded to the left and right sides of the first concrete beam 1, a reinforcing side plate flange 4 being connected to the upper end of the reinforcing side plate 3, a reinforcing bottom plate 5 being bonded to the lower side of the first concrete beam 1, and the reinforcing bottom plate 5 and the reinforcing side plate 3 being connected by a fillet weld 8; chemical anchor bolts 6 are implanted in the first concrete beam 1 and the second concrete beam 2, one end of the chemical anchor bolt 6 passes through the reinforcing side plate 3, and one end of the chemical anchor bolt 6 extending out of the reinforcing side plate 3 is threadedly connected to a nut 7;

[0026] Furthermore, the reinforcing side plate body 3 and the reinforcing side plate flange 4 are bent into an inverted "L" shape, and the width of the reinforcing side plate flange 4 is 30-50 mm to prevent the steel plate from being soft and deformed due to the length of the steel plate assembly; the reinforcing bottom plate 5 is 10-25 mm wider than the reinforcing side plate body 3 on each side, and the reinforcing bottom plate 5 and the reinforcing side plate body 3 are vertically distributed to facilitate on-site welding;

[0027] The reinforcement steel plate assembly can select corresponding materials, thickness and width according to the stress condition of the first concrete beam 1, wherein the reinforcement side plate body 3 and the reinforcement side plate flange 4 are bent into an inverted "L" shape, and the existence of the reinforcement side plate flange 4 can prevent the steel plate from being soft and deformed due to the length of the steel plate assembly. The reinforcement bottom plate 5 should be 10-25mm wider than the reinforcement side plate body 3 on each side to facilitate on-site welding. First, the plaster layer at the joint surface of the first concrete beam 1, the second concrete beam 2 and the reinforcement side plate body 3 and the reinforcement bottom plate 5 is removed in advance. According to the design requirements, the first concrete beam 1 and the second concrete beam 2 are drilled and the chemical anchor 6 is implanted. According to the actual positioning of the chemical anchor 6, the reinforcement side plate body 3 is made into a hole, and the hole diameter is the diameter of the chemical anchor 6 plus 2mm. The reinforcement side plate body 3 is installed on both sides of the first concrete beam 1 and the nut 7 is tightened. The reinforcement bottom plate 5 is installed at the bottom of the first concrete beam 1. The reinforcement bottom plate 5 and the reinforcement side plate body 3 are connected together by on-site fillet welds 8 to reinforce the concrete beam column;

[0028] Furthermore, a reinforcing rod 13 is connected between the reinforcing side plate body 3 and the reinforcing side plate flange 4, and memory metal 9 is connected to the grooves on the outer sides of the reinforcing side plate body 3 and the reinforcing bottom plate 5. The outside of the memory metal 9 is respectively attached with a fixing plate a10 and a fixing plate b11. The fixing plate a10 is fixed to the outer side of the reinforcing side plate body 3 by bolts 12, and the fixing plate b11 is fixed to the upper side of the reinforcing bottom plate 5 by bolts 12.

[0029] Specifically, the memory metal 9 surrounds the outside of the reinforced side plate 3 and the reinforced bottom plate 5, and the memory metal 9 is evenly spaced outside the reinforced side plate 3 and the reinforced bottom plate 5. The memory metal 9 can be used to constrain the steel plate structure to reinforce the concrete beam; the reinforcement rods 13 are distributed in an inclined shape, and the reinforcement rods 13 and the chemical anchors 6 and the memory metal 9 are staggered, which can strengthen the bending parts of the reinforced side plate 3 and the reinforced side plate flange 4 to improve their bearing capacity;

[0030] An inclined reinforcement rod 13 is connected between the reinforcing side panel body 3 and the reinforcing side panel flange 4 to reinforce and support the reinforcing side panel body 3 and the reinforcing side panel flange 4, and the bearing capacity between the reinforcing side panel body 3 and the reinforcing side panel flange 4 is improved. A stretched memory metal 9 is connected in the grooves provided in the reinforcing side panel body 3 and the reinforcing side panel flange 4, and the fixing plate a10 is fixed to the reinforcing side panel body 3 by bolts 12 to fix the memory metal 9, and the fixing plate b11 is fixed to the reinforcing bottom plate 5 by bolts 12 to further fix the memory metal 9, and then high-temperature glass glue is injected into the assembly groove of the memory metal 9 to fix the memory metal 9 while making the memory metal 9 shrink when heated, and the shrinkage force thereof is used to provide tensioning force for the reinforcing side panel body 3 and the reinforcing side panel flange 4, so as to constrain the memory metal 9 so that the memory metal 9 is tightly clamped on the outside of the first concrete beam 1, thereby further improving the reinforcement of the first concrete beam 1. The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0031] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A steel plate structure for reinforcing a concrete beam column, comprising a first concrete beam (1), characterized in that: The end of the first concrete beam (1) is bonded to the second concrete beam (2), the left and right sides of the first concrete beam (1) are bonded to reinforcing side panels (3), the upper end of the reinforcing side panel (3) is connected to a reinforcing side panel flange (4), the lower side of the first concrete beam (1) is bonded to a reinforcing bottom panel (5), and the reinforcing bottom panel (5) and the reinforcing side panel (3) are connected via a fillet weld (8); Chemical anchor bolts (6) are implanted in the first concrete beam (1) and the second concrete beam (2), one end of the chemical anchor bolt (6) passes through the reinforced side plate body (3), and one end of the chemical anchor bolt (6) extending out of the reinforced side plate body (3) is threadedly connected to a nut (7).

2. The steel plate structure for reinforcing concrete beams and columns according to claim 1, characterized in that: A reinforcing rod (13) is connected between the reinforcing side plate body (3) and the reinforcing side plate flange (4); memory metal (9) is connected to the grooves on the outer side surfaces of the reinforcing side plate body (3) and the reinforcing bottom plate (5); a fixing plate a (10) and a fixing plate b (11) are respectively attached to the outside of the memory metal (9); the fixing plate a (10) is fixed to the outer side of the reinforcing side plate body (3) by bolts (12); and the fixing plate b (11) is fixed to the upper side of the reinforcing bottom plate (5) by bolts (12).

3. The steel plate structure for reinforcing concrete beams and columns according to claim 1, characterized in that: The reinforcing side plate body (3) and the reinforcing side plate flange (4) are bent into an inverted "L" shape, and the width of the reinforcing side plate flange (4) is 30 to 50 mm.

4. The steel plate structure for reinforcing concrete beams and columns according to claim 1, characterized in that: The width of each side of the reinforcing bottom plate (5) from the reinforcing side plate body (3) is 10 to 25 mm, and the reinforcing bottom plate (5) and the reinforcing side plate body (3) are arranged perpendicular to each other.

5. The steel plate structure for reinforcing concrete beams and columns according to claim 2, characterized in that: The memory metal (9) surrounds the outside of the reinforced side plate (3) and the reinforced bottom plate (5), and the memory metal (9) is distributed at equal intervals outside the reinforced side plate (3) and the reinforced bottom plate (5).

6. The steel plate structure for reinforcing concrete beams and columns according to claim 2, characterized in that: The reinforcement rods (13) are distributed in an inclined manner, and the reinforcement rods (13) and the chemical anchor bolts (6) and the memory metal (9) are all distributed in an alternating manner.

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