Frame beam column anchoring structure

Abstract

The utility model discloses a frame beam column anchoring structure in the technical field of building structure reinforcement, which comprises carbon fiber cloth paved on the surfaces of a frame beam and a frame column, a steel plate is arranged on the outer surface of the carbon fiber cloth, the steel plate is tightly nailed on the frame beam and the frame column through a chemical anchor bolt, and a pressing strip is adhered between the chemical anchor bolt and the steel plate. The frame beam column anchoring structure adopts the carbon fiber cloth for reinforcement, the carbon fiber cloth has the characteristics of high strength and high modulus, and the carbon fiber cloth is paved and reinforced on the surface of the frame beam column to form a composite stress system, so that the anchoring force at the joint of the frame beam and the frame column is enhanced, and the supporting stability of the frame beam column structure is improved; the bearing capacity of the frame beam column structure is guaranteed, construction operation is convenient, the overall weight is light, no extra pressure is exerted on the whole structure, corrosion resistance is achieved, the service life is prolonged, and the frame beam column structure is suitable for being used in building reinforcement engineering.

Description

Technical Field

[0001] This utility model relates to the field of building structure reinforcement engineering technology, and in particular to a frame beam-column anchorage structure. Background Technology

[0002] Frame beams and columns typically consist of beams and columns. These components connect to form the skeleton of the building structure. Frame columns are the main vertical load-bearing members in a frame structure, responsible for bearing the loads transmitted from the slabs and beams. Frame beams are beams that connect frame columns or shear walls; beams with a span-to-depth ratio of not less than 5 are also considered frame beams. The main function of frame beams and columns is to transfer the weight of the floors and external loads to the foundation. The columns support the weight of the beams and the entire building, while the beams bear and transmit loads, distributing the building's weight evenly across the columns, ensuring the stability and safety of the building structure. The interconnected frame beams and columns form a stable frame system, allowing for more flexible and varied building spatial layouts and providing necessary stability and support for the building's facilities.

[0003] As building structures age, they become damaged due to material aging, fatigue, and overload, leading to weakened anchorage between frame beams and columns and a gradual decrease in load-bearing capacity. When the load-bearing capacity of frame beams and columns is insufficient, it will seriously affect the overall safety and stability of the building, requiring necessary reinforcement measures for frame beams and columns. Utility Model Content

[0004] The purpose of this utility model is to overcome the defects in the prior art and provide a frame beam-column anchorage structure that enhances the anchorage force between the frame beam and the column, improves the support stability of the frame beam and column, and ensures the load-bearing capacity of the frame beam and column.

[0005] The purpose of this utility model is achieved as follows: a frame beam and column anchoring structure includes carbon fiber cloth laid on the surface of the frame beam and the frame column, the outer surface of the carbon fiber cloth is provided with a steel plate, the steel plate is fastened to the frame beam and the frame column by chemical anchors, and a pressure strip is pasted between the chemical anchors and the steel plate.

[0006] In operation, this invention involves bonding carbon fiber cloth to the surfaces of the frame beams and columns, and then securing it with steel plates, anchor bolts, and pressure strips. This enhances the anchoring force at the connection between the frame beams and columns, improves the supporting stability of the frame beam-column structure, and ensures its load-bearing capacity. Compared with existing technologies, the advantages of this invention are: First, the frame beam-column anchoring structure of this invention uses carbon fiber cloth reinforcement. Carbon fiber cloth has high strength and high modulus characteristics. Laying and reinforcing it on the surface of the frame beams and columns forms a composite force-bearing system, improving the load-bearing capacity of the frame beam-column connection. Construction is convenient. Compared with the reinforcement structure used in existing technologies that widens the cross-section of the frame beams and columns with reinforced concrete, this device is lightweight, exerts no additional pressure on the overall structure, is corrosion-resistant, and extends its service life. Second, the fixing structure of this device is easy to construct, requires no large equipment, and the bonding length and position of the carbon fiber cloth can be flexibly adjusted according to the dimensions of the frame beams and columns. It is easy to operate and highly adaptable.

[0007] Furthermore, the steel plate is an L-shaped steel plate, and the carbon fiber cloth laid on the frame beam extends to the top of the frame beam and is fully pressed by the steel plate; using the L-shaped steel plate increases the connection area between the frame beam and the frame column, improves the stiffness and ductility at the connection node, can withstand greater deformation and is less prone to failure, which helps to stabilize the overall structure of the frame beam and column and ensures the load-bearing capacity.

[0008] Furthermore, multiple pressure strips are provided at 900 mm intervals along the laying direction of the carbon fiber cloth, and the thickness of the pressure strips is 30 mm. The pressure strips increase the contact area between the carbon fiber cloth and the concrete structure, prevent the carbon fiber cloth from loosening or falling off during long-term stress, improve the reinforcement effect, and help the carbon fiber cloth to play a role in transmitting load stress.

[0009] Furthermore, the carbon fiber cloth has a strength of 300 g / m². 2 The carbon fiber cloth is impregnated with structural adhesive and then laid on the surface of the frame beams and frame columns, with the edge of the carbon fiber cloth less than 50 mm from the edge of the frame column. The carbon fiber cloth has high strength, which effectively enhances the load-bearing capacity and durability of the anchored structure. The 300g / m² type carbon fiber cloth is lightweight, easy to cut and paste, convenient for construction personnel, and has strong environmental adaptability.

[0010] Furthermore, the chemical anchor is a carbon steel grade 6.8 anchor with an inverted cone locking hook at the tail; the high tensile and shear strength of carbon steel makes the anchoring structure more stable and reliable, capable of withstanding large loads, and ensuring the stability and safety of the anchoring structure. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the frame column widening and fixing structure of this utility model.

[0012] Figure 2This is a schematic diagram of another embodiment of the present invention.

[0013] Figure 3 This is a schematic diagram of the arrangement structure for bonding carbon fibers in this utility model.

[0014] In the image above, 1 is the frame beam, 2 is the frame column, 3 is the steel plate, 4 is the chemical anchor, 5 is the pressure strip, 6 is the side beam, and 7 is the carbon fiber cloth. Detailed Implementation Example 1

[0015] like Figure 1 , 3 The illustrated frame beam-column anchoring structure includes carbon fiber cloth 7 laid on the surfaces of frame beam 1 and frame column 2. A steel plate 3 is provided on the outer surface of the carbon fiber cloth 7. The steel plate 3 is tightly fastened to the frame beam 1 and frame column 2 using chemical anchors 4. A pressure strip 5 is bonded between the chemical anchors 4 and the steel plate 3. The steel plate 3 is an L-shaped steel plate. The carbon fiber cloth 7 laid on the frame beam 1 extends to the top of the frame beam 1 and is fully compressed by the steel plate 3. The use of the L-shaped steel plate increases the connection area between the frame beam 1 and frame column 2, improving the stiffness and ductility at the connection node, allowing it to withstand larger deformations and reducing the risk of failure. This contributes to the stability of the overall frame beam-column structure and ensures its load-bearing capacity.

[0016] Multiple pressure strips 5 are provided at 900 mm intervals along the laying direction of carbon fiber cloth 7. The thickness of pressure strip 5 is 30 mm, and the carbon fiber cloth 7 is 300 g / m². 2 The carbon fiber cloth 7 is impregnated with structural adhesive and then laid on the surface of the frame beam 1 and frame column 2. The edge of the carbon fiber cloth 7 is less than 50 mm away from the edge of the frame column 2. The carbon fiber cloth 7 has high strength, which effectively enhances the load-bearing capacity and durability of the anchoring structure. The 300g / m² type carbon fiber cloth is lightweight, easy to cut and paste, convenient for construction personnel to operate, and has strong environmental adaptability.

[0017] Chemical anchor 4 is a carbon steel grade 6.8 anchor with an inverted cone locking hook at the tail; the high tensile and shear strength of carbon steel makes the anchoring structure more stable and reliable, and can withstand large loads, ensuring the stability and safety of the anchoring structure. Example 2

[0018] like Figure 2 As shown, the beam end edge at the connection between frame beam 1 and frame column 2 is also provided with a downturned edge beam 6. During anchoring, carbon fiber cloth 7 is pasted on the downturned edge beam 6 and pressure strip 5 and screw-type chemical anchor bolt 4 are used for compression and reinforcement.

[0019] When installing the anchoring structure of this utility model, firstly, remove the plaster layer or pad layer from the surface of the frame beam 1 and frame column 2 to be reinforced down to the concrete base layer, remove oil stains and laitance from the concrete surface, and grind down to a solid base layer. Grind or repair any uneven parts. If there are corners, the bonding area should be ground into a rounded chamfer with a radius of not less than 20mm. After that, remove surface dust and clean it thoroughly, keeping the base surface dry. According to the design reinforcement requirements, the bonding surface of the carbon fiber cloth 7 is ground to increase surface roughness and improve adhesion. A layer of primer is first applied to the surface of the frame beam 1 and frame column 2 to be bonded. The carbon fiber cloth 7 is then cut according to the bonding location and fully impregnated with adhesive. Afterwards, the carbon fiber cloth 7 is aligned with the bonding location and laid out, ensuring that it is tightly bonded to the concrete surface, ensuring a smooth and bubble-free bond. When multiple layers are required, the overlap between the upper and lower layers of carbon fiber cloth 7 should be at least 100 mm, and the overlap should be performed in the direction of the fibers. Another layer of adhesive is rolled onto the surface of the carbon fiber cloth 7 and pressed to ensure that the carbon fiber cloth 7 is completely impregnated with adhesive. After the adhesive cures, the bonded carbon fiber cloth 7 is pressed and reinforced using steel plate 3 and chemical anchors 4 to enhance the anchoring force at the connection between frame beam 1 and frame column 2, improve the supporting stability of the frame beam and column structure, and ensure the load-bearing capacity of the frame beam and column structure. The anchoring structure of this invention forms a composite force-bearing system with the frame beams and columns, thereby improving the load-bearing capacity of the frame beam-column connection. The anchoring structure of this device is lightweight, exerts no additional pressure on the overall structure, is corrosion-resistant, and extends its service life, making it suitable for use in building reinforcement projects.

[0020] This utility model is not limited to the above embodiments. Based on the technical solutions disclosed in this utility model, those skilled in the art can make some substitutions and modifications to some of the technical features without creative labor, and these substitutions and modifications are all within the protection scope of this utility model.

Claims

1. A frame beam-column anchorage structure, characterized in that: The system includes carbon fiber cloth laid on the surface of frame beams and frame columns. The outer surface of the carbon fiber cloth is provided with a steel plate, which is fastened to the frame beams and frame columns by chemical anchors. Pressure strips are pasted between the chemical anchors and the steel plate. The steel plate is an L-shaped steel plate. The carbon fiber cloth laid on the frame beam extends to the top of the frame beam and is fully pressed by the steel plate. Multiple pressure strips are provided at 900 mm intervals along the laying direction of the carbon fiber cloth, and the thickness of the pressure strips is 30 mm.

2. The frame beam-column anchorage structure according to claim 1, characterized in that: The carbon fiber cloth is 300g / m². 2 The carbon fiber cloth is impregnated with structural adhesive and then laid on the surface of the frame beams and frame columns, with the edge of the carbon fiber cloth less than 50 mm from the edge of the frame column.

3. A frame beam-column anchorage structure according to claim 1 or 2, characterized in that: The chemical anchor is a carbon steel grade 6.8 anchor with an inverted cone-shaped locking hook at the tail.

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