Replaceable steel plate reinforcing structure suitable for reinforced concrete beam-column joint

Abstract

A replaceable steel plate reinforcing structure suitable for a reinforced concrete beam column joint comprises beam steel jackets arranged on beams on the left side and the right side of the intersection portion of a concrete beam and a concrete column and column steel jackets arranged on columns at the upper end and the lower end of the intersection portion of the concrete beam and the concrete column. First perforated lug plates are arranged in the middles of the top surfaces and the bottoms of the beam steel sleeves on the left side and the right side of the crossing part, second perforated lug plates are arranged in the middles of the left side surfaces and the right side surfaces of the column steel sleeves at the upper end and the lower end of the crossing part, and the first perforated lug plates and the second perforated lug plates are hinged through steel supports; a triangular structure is formed among the column, the beam and the steel support, the stress condition of the steel support is influenced by the stress condition of the upper portion of the beam-column joint, when one side of the upper portion of the beam-column joint is pushed, the upper portion of the other side of the beam-column joint is pressed, the lower portion of the other side of the beam-column joint is pulled, and the force is sequentially transmitted to structures of other corners; and good integrality, durability and bearing capacity are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of building structure beam-column nodes, in particular to a replaceable steel plate reinforcement structure suitable for reinforced concrete beam-column nodes. Background Art

[0002] A large number of existing or newly built reinforced concrete structures in my country are facing the situation of failure or insufficient bearing capacity. For reinforced concrete structures, nodes are the intersections of beams and columns, with complex forces and difficult construction. Once a node fails, the structure may collapse seriously, causing significant losses to the society and economy. Therefore, the transformation and reinforcement of the beam-column nodes of reinforced concrete structures has high practical value.

[0003] At present, the reinforcement and reconstruction methods that are widely used mainly include external steel cladding, steel plate bonding and cross-section enlargement. These methods can effectively improve the seismic performance of reinforced concrete structures, but they require a large amount of materials and are expensive. In addition, after the structure is damaged by a large earthquake, the reinforced and reconstructed structure is not suitable or can not be repaired. Summary of the invention

[0004] In order to overcome the deficiencies of the above-mentioned prior art, the purpose of the present invention is to provide a replaceable steel plate reinforcement structure suitable for reinforced concrete beam-column nodes, which can not only improve the seismic performance of the original structure, but also, when an earthquake occurs, the beam-column node of the present invention can be destroyed first to reduce the damage to the concrete part. After the earthquake, if the reinforced steel plate structure is damaged, it can be easily replaced to continue to improve the overall performance of the structure. It has the advantages of simple structure, convenient construction, high bearing capacity and good durability.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A replaceable steel plate reinforcement structure suitable for reinforced concrete beam-column nodes, including beam steel sleeves 3 arranged on the beams on the left and right sides of the intersection of a concrete beam 1 and a concrete column 2, and column steel sleeves 4 arranged on the columns at the upper and lower ends of the intersection of the concrete beam 1 and the concrete column 2. A first perforated ear plate 5 is provided in the middle of the top surface and the middle of the bottom surface of the beam steel sleeves 3 on the left and right sides of the intersection, and a second perforated ear plate 6 is provided in the middle of the left side surface and the middle of the right side surface of the column steel sleeves 4 at the upper and lower ends of the intersection. The first perforated ear plate 5 and the second perforated ear plate 6 are hingedly connected by a steel support 7.

[0007] The distance between the beam steel sleeve 3 and the center of the intersection of the concrete beam 1 and the concrete column 2 is 300-350 mm.

[0008] The distance between the column steel sleeve 4 and the center of the intersection of the concrete beam 1 and the concrete column 2 is 200-250 mm.

[0009] The beam steel sleeve 3 is formed by two opposite first steel plates 8 and two first thickened steel plates 9 fixedly connected to form a "mouth" shaped structure.

[0010] The column steel sleeve 4 is formed by two opposite second steel plates 10 and two second thickened steel plates 11 fixedly connected to form a "mouth" shaped structure.

[0011] The first thickened steel plate 9 is anchored on the concrete beam 1 by chemical anchor bolts 12 , and the second two thickened steel plates 11 are anchored on the concrete column 2 by chemical anchor bolts 12 .

[0012] The two ends of the steel support 7 are fixedly connected with thickened connecting plates 13 , the middle of the thickened connecting plate 13 has a hole, and is connected to the first perforated ear plate 5 or the second perforated ear plate 6 through stud bolts 14 .

[0013] The fixed connection is achieved by welding or integral molding.

[0014] The thickness of the thickened steel plate and the thickened connecting plate is more than twice that of the steel plate.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The utility model forms a triangle with the node, has good stability, can better distribute the force received, and prevent the node from being damaged due to the concentration of force in the node area and excessive force.

[0017] 2. The column steel sleeve 4 and the beam steel sleeve 3 of the utility model are at a certain distance from the core area of ​​the node, which avoids excessive force in the node area, which is detrimental to the structure; and the utility model is relatively small as a whole, which greatly reduces the use of steel and the difficulty of construction, and the reinforcement method is simple, which also reduces the construction cost.

[0018] 3. A triangular structure is formed between the columns, beams and steel supports of the utility model. The stress condition of the steel supports is affected by the stress condition of the upper part of the beam-column joint. When the upper left side of the beam-column joint is subjected to thrust, the upper right side of the beam-column joint is subjected to pressure, and the lower part is subjected to tension, and the force is transmitted to the structures at other corners in turn; when the upper right side of the beam-column joint is subjected to thrust, the stress condition is similar; the utility model hinges the steel supports with the column and beam steel sleeves, making the structure force transmission more flexible; and the steel supports can be replaced according to the actual engineering conditions, suitable for a variety of construction conditions, and adapted to different reinforcement requirements. The anchoring columns and beam steel sleeve components can be reused, which increases the service life of the reinforcement components and reduces unnecessary material waste.

[0019] 4. The utility model is anchored to the original components through chemical anchor bolts, has good integrity, can cooperate with the original components, and effectively improves the overall bearing capacity of the concrete node while reducing the use of new structural reinforcement components and structural adhesives. In addition, after the earthquake, if the reinforced steel plate structure is damaged, it can be easily replaced to continue to improve the overall performance of the structure.

[0020] 5. The steel support 7 of the utility model is hinged with the first perforated ear plate 5 on the column steel sleeve 4 and the beam steel sleeve 3 by using stud bolts 14, so that when subjected to force, the steel support 7 can rotate to a certain extent, adapting to more actual engineering conditions, and preventing the steel support from being damaged when it cannot function, so that the reinforced structure has a certain durability.

[0021] In summary, the structure of the utility model has good integrity, durability and bearing capacity, can resist continuous vibration of the structure caused by various natural disasters such as earthquakes and wind disasters, and at the same time reduce the impact of vibration on the structure. The structure is reasonable and the construction is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0023] Figure 2 It is a structural schematic diagram of the steel support structure of the utility model.

[0024] In the figure: 1. concrete beam; 2. concrete column; 3. beam steel sleeve; 4. column steel sleeve; 5. first perforated ear plate; 6. second perforated ear plate; 7. steel support; 8. first steel plate; 9. first thickened steel plate; 10. second steel plate; 11. second thickened steel plate; 12. chemical anchor bolt; 13. thickened connecting plate; 14. stud bolt. DETAILED DESCRIPTION

[0025] The utility model is further described below in conjunction with the accompanying drawings.

[0026] See also Figure 1 , Figure 2 A replaceable steel plate reinforcement structure suitable for reinforced concrete beam-column nodes, including beam steel sleeves 3 arranged on the beams on the left and right sides of the intersection of a concrete beam 1 and a concrete column 2, and column steel sleeves 4 arranged on the columns at the upper and lower ends of the intersection of the concrete beam 1 and the concrete column 2. A first perforated ear plate 5 is provided in the middle of the top surface and the middle of the bottom surface of the beam steel sleeves 3 on the left and right sides of the intersection, and a second perforated ear plate 6 is provided in the middle of the left side surface and the middle of the right side surface of the column steel sleeves 4 at the upper and lower ends of the intersection. The first perforated ear plate 5 and the second perforated ear plate 6 are hingedly connected by a steel support 7.

[0027] The distance between the beam steel sleeve 3 and the center of the intersection of the concrete beam 1 and the concrete column 2 is 300-350 mm.

[0028] The distance between the column steel sleeve 4 and the center of the intersection of the concrete beam 1 and the concrete column 2 is 200-250 mm.

[0029] The beam steel sleeve 3 is formed by two opposite first steel plates 8 and two first thickened steel plates 9 fixedly connected to form a "mouth" shaped structure.

[0030] The column steel sleeve 4 is formed by two opposite second steel plates 10 and two second thickened steel plates 11 fixedly connected to form a "mouth" shaped structure.

[0031] The first thickened steel plate 9 is anchored on the concrete beam 1 by chemical anchor bolts 12 , and the second two thickened steel plates 11 are anchored on the concrete column 2 by chemical anchor bolts 12 .

[0032] The two ends of the steel support 7 are fixedly connected with a thickened connecting plate 13, the middle of the thickened connecting plate 13 has a hole, and the thickened connecting plate 13 is connected to the ear plate with the hole by stud bolts 14, which can prevent the two ends of the steel support from being damaged by excessive force.

[0033] The fixed connection is achieved by welding or integral molding.

[0034] The thickness of the thickened steel plate is twice that of the steel plate, and the thickened steel plate is preferably 10 mm, which can effectively prevent the strength of the reinforced structure from failing to meet the requirements of the actual project, and can also save steel usage.

[0035] The working principle of the utility model is:

[0036] Beam steel sleeves 3 are sleeved on the left and right sides of the intersection of beams and columns, column steel sleeves 4 are sleeved on the upper and lower ends of the intersection of beams and columns, and steel supports 7 are connected between the first opening ear 5 of the beam steel sleeve 3 and the second opening ear plate 6 of the column steel sleeve to form a triangular support structure. The stress condition of the steel support is affected by the stress condition of the upper part of the beam-column node. When the upper left side of the beam-column node is subjected to thrust, the upper right side of the beam-column node is subjected to pressure, and the lower part is subjected to tension, and the force is transmitted to the structures at other corners in turn; when the upper right side of the beam-column node is subjected to thrust, the stress condition is similar; it has good integrity, durability and bearing capacity, can resist the continuous vibration of the structure caused by various natural disasters such as earthquakes and wind disasters, and at the same time reduce the influence of vibration on the structure, and has a reasonable structure and convenient construction.

Claims

1. A replaceable steel plate reinforcement structure suitable for reinforced concrete beam-column joints, comprising a beam steel sleeve (3) arranged on the beams on the left and right sides of the intersection of a concrete beam (1) and a concrete column (2), and a column steel sleeve (4) arranged on the columns at the upper and lower ends of the intersection of the concrete beam (1) and the concrete column (2), characterized in that: A first perforated ear plate (5) is provided in the middle of the top surface and the middle of the bottom surface of the beam steel sleeves (3) on the left and right sides of the intersection, and a second perforated ear plate (6) is provided in the middle of the left side surface and the middle of the right side surface of the column steel sleeves (4) at the upper and lower ends of the intersection, and the first perforated ear plate (5) and the second perforated ear plate (6) are hingedly connected by a steel support (7).

2. The replaceable steel plate reinforcement structure suitable for reinforced concrete beam-column joints according to claim 1, characterized in that: The distance between the beam steel sleeve (3) and the center of the intersection of the concrete beam (1) and the concrete column (2) is 300-350 mm.

3. The replaceable steel plate reinforcement structure suitable for reinforced concrete beam-column joints according to claim 1, characterized in that: The distance between the column steel sleeve (4) and the center of the intersection of the concrete beam (1) and the concrete column (2) is 200-250 mm.

4. The replaceable steel plate reinforcement structure suitable for reinforced concrete beam-column joints according to claim 1, characterized in that: The beam steel sleeve (3) is composed of two opposite first steel plates (8) and two first thickened steel plates (9) which are fixedly connected to form a "mouth" shaped structure.

5. The replaceable steel plate reinforcement structure suitable for reinforced concrete beam-column joints according to claim 1, characterized in that: The column steel sleeve (4) is formed by two opposite second steel plates (10) and two second thickened steel plates (11) being fixedly connected to form a "mouth" shaped structure.

6. The replaceable steel plate reinforcement structure for reinforced concrete beam-column joints according to claim 4, characterized in that: The first thickened steel plate (9) is anchored to the concrete beam (1) by means of chemical anchor bolts (12), and the second two thickened steel plates (11) are anchored to the concrete column (2) by means of chemical anchor bolts (12).

7. The replaceable steel plate reinforcement structure for reinforced concrete beam-column joints according to claim 1, characterized in that: The two ends of the steel support (7) are fixedly connected with thickened connecting plates (13), the middle of the thickened connecting plate (13) is opened with a hole, and is connected to the first hole-opening ear plate (5) or the second hole-opening ear plate (6) through stud bolts (14).

8. A replaceable steel plate reinforcement structure suitable for reinforced concrete beam-column joints according to claim 4, 5 or 7, characterized in that: The fixed connection is achieved by welding or integral molding.

9. A replaceable steel plate reinforcement structure suitable for reinforced concrete beam-column joints according to claim 4 or 5, characterized in that: The thickness of the thickened steel plate and the thickened connecting plate is more than twice that of the steel plate.

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