A cavity wall tie beam reinforcement structure

Abstract

The utility model belongs to building reinforcement technical field discloses a kind of cavity wall ring beam reinforcing structure, including the wall of floor position, the wall is built-in steel beam, steel plate is installed in the wall surface inboard, the wall is equipped with glue pouring compact layer, angle steel is installed between the steel plate and the steel beam, a plurality of chemical anchor bolts are installed between the steel plate and the wall, the structure design of the utility model can utilize original precast slab or local core pouring, ensure that ring beam and wall reliable pull together;Ring beam reinforcement is all in the interior, does not affect the appearance of facade, and makes ring beam and main structure connection, and the integrity is better.

Description

Technical Field

[0001] This utility model belongs to the field of building reinforcement technology, specifically relating to a hollow wall ring beam reinforcement structure. Background Technology

[0002] In existing building renovation projects, it is often necessary to retain the original hollow brick walls, but the internal structure uses steel structure for load-bearing. However, due to the age of the original construction, the original hollow brick walls generally do not have ring beams, which do not meet the structural requirements of current specifications. Therefore, it is necessary to add ring beams for reinforcement. Currently, the common practices for adding ring beams to reinforce brick walls are as follows: 1. External reinforced concrete ring beam: When a ring beam is set on one side, it is usually placed outdoors, which affects the appearance. The connection with the wall is achieved by tie bars embedded in the wall. However, for hollow walls, the presence of cavities makes it impossible to anchor.

[0003] 2. Reinforced mesh cement composite mortar masonry composite ring beam: It is necessary to set ring beams on both sides, and then set tie bars on both sides of the ring beams. There are two problems: the outer ring beam protrudes from the wall surface, affecting the appearance; the tie bars cannot be anchored in the cavity inside the hollow wall.

[0004] 3. Steel tie rods instead of ring beams: This method is only suitable for interior wall reinforcement and cannot be used for exterior walls. Utility Model Content

[0005] In view of the problems mentioned above in the background technology, the purpose of this utility model is to provide a reinforced structure for the ring beam of the air hopper wall.

[0006] To achieve the above-mentioned technical objectives, the technical solution adopted by this utility model is as follows: A hollow wall ring beam reinforcement structure includes a wall located at a floor level, a steel beam built into the wall, a steel plate installed on the inner side of the wall surface, a glue-filled dense layer on the wall, angle steel installed between the steel plate and the steel beam, and a number of chemical anchors installed between the steel plate and the wall.

[0007] Furthermore, the angle steel is installed between the steel plate and the steel beam by welding.

[0008] Further specifying, the wall includes the original precast slab, the holes in the original precast slab are filled with grout, and the chemical anchors are used for anchoring.

[0009] Further specifying, the wall comprises sleeper bricks and mortar bricks, the cavities of the sleeper bricks and mortar bricks are filled with grout, and the chemical anchors are used for anchoring.

[0010] Furthermore, the welded ends of the angle steel are kept perpendicular to the mating surface.

[0011] The beneficial effects of using this utility model are as follows: The structural design of this utility model can utilize existing precast slabs or partial core grouting to ensure a reliable connection between the ring beam and the wall. With the structural design of this utility model, the ring beam reinforcement is all inside, so it does not affect the appearance of the facade; This invention connects the ring beam to the main structure, resulting in better overall integrity. Attached Figure Description

[0012] This utility model can be further illustrated by the non-limiting embodiments given in the accompanying drawings; Figure 1 This is a schematic diagram of the structure of a hollow bucket wall ring beam reinforcement structure according to an embodiment of the present invention, when the reinforcement part has an original precast slab; Figure 2 This is a schematic diagram of the structure of a hollow bucket wall ring beam reinforcement structure according to an embodiment of the present invention, where the reinforcement points are the sleeping bricks and the bucket bricks; Figure 3 This is a schematic diagram of the structure of the hollow bucket wall ring beam reinforcement structure of this utility model when the reinforcement point is the internal wall surface; The symbols for the main components are explained below: 1. Wall; 2. Steel beam; 3. Steel plate; 4. Adhesive-filled dense layer; 5. Angle steel; 6. Chemical anchor bolt; 7. Original precast slab; 8. Sleeping brick; 9. Battered brick. Detailed Implementation

[0013] To enable those skilled in the art to better understand this utility model, the technical solution of this utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0014] Example 1: like Figures 1-3 As shown, the present invention provides a hollow wall ring beam reinforcement structure, including a wall 1 located at a floor level, a steel beam 2 built into the wall 1, a steel plate 3 installed on the inner side of the wall 1, a glue-filled dense layer 4 on the wall 1, an angle steel 5 installed between the steel plate 3 and the steel beam 2, and a number of chemical anchors 6 installed between the steel plate 3 and the wall 1.

[0015] In this implementation case, the steel beam 2 of wall 1 is located and the basic structure of wall 1 is determined. A grouting layer 4 is set at the anchoring point of chemical anchor bolt 6. This can be done by filling, or a layer of grouting layer 4 can be applied to the wall surface and smoothed. A ring of steel plate 3 is laid at the position of grouting layer 4. Then, the steel plate 3 is anchored to the inside of wall 1 using chemical anchor bolt 6. Finally, angle steel 5 is used to support the steel plate 3 and steel beam 2. It is important to emphasize that the horizontality of angle steel 5 after welding and fixing should be ensured to the greatest extent possible. Secondly, attention should be paid to the verticality of the welding positions on both sides of angle steel 5. If verticality cannot be achieved, auxiliary steel materials should be used or filling welding should be carried out according to the specific situation. It is not difficult for those skilled in the relevant field to understand that the stability of the angle steel 5 welding must be ensured. Because the reinforcement is located on the inner side of the wall, it will not affect the appearance. Furthermore, such as Figure 3 If the reinforcement location is the interior wall, which will not affect the appearance, then chemical anchors 6 can be used to install steel plates 3 on both sides of the interior wall, and angle steel 5 can be welded between the steel plates 3 and the steel beam 2 to form a tight reinforcement on both sides of the interior wall.

[0016] Example 2: like Figure 1 As shown, angle steel 5 is installed between steel plate 3 and steel beam 2 by welding.

[0017] In this implementation case, firstly, according to the connection angle and stress requirements between steel plate 5 and steel beam 2, angle steel of suitable size is cut (usually equilateral or unequal angle steel, with a length covering the stress area of ​​the connection node). The welding contact surfaces of the steel plate, steel beam, and angle steel are then rust-removed and ground to expose the metallic luster to ensure welding quality. Subsequently, angle steel 5 is attached to the junction of steel plate 3 and steel beam 2, and welding is performed using arc welding (such as manual arc welding). At the contact point between angle steel 5 and steel plate 3, a continuous fillet weld is formed along the contact edge, with a weld height not less than 0.7 times the thickness of angle steel 5. The angle steel 5 and the steel beam 2 are connected by a continuous fillet weld, ensuring that the weld is uniform and full, without defects such as slag inclusions or porosity. After welding, the weld is ground smooth and treated with anti-corrosion measures (such as applying anti-rust paint). The welded connection enables the angle steel 5, the steel plate 3, and the steel beam 2 to form a rigid whole, which has high force transmission efficiency, can effectively disperse the stress at the joint, and improve the overall stability of the structure. Compared with bolted connections, it eliminates the need for drilling and bolting, making construction convenient and avoiding stress concentration hazards because there are no holes weakening the connection. At the same time, the weld has good sealing performance, which can reduce the risk of corrosion caused by moisture intrusion. It is suitable for structural joints with high requirements for connection strength and integrity, and performs particularly well in seismic reinforcement or heavy load scenarios.

[0018] Example 3: like Figure 1 As shown, the wall 1 includes the original precast slab 7, the holes of the original precast slab 7 are filled with grout, and chemical anchors 6 are used for anchoring.

[0019] In this implementation case, firstly, the debris, loose dust, and loose concrete inside the seven holes of the original precast slab are cleaned. A high-pressure air pump can be used to blow away any remaining debris. If there is oil on the inner wall of the holes, it can be wiped clean with a solvent. Next, a special grouting material is prepared (if using non-shrink cement-based grouting material, mix it to a fluid state according to the water-to-material ratio). The grouting material is then slowly injected from the bottom of the holes using a grouting gun until it overflows from the top, ensuring no air bubbles remain. It is then allowed to cure to the specified strength (usually more than 24 hours) to completely fill the holes and form a uniform load-bearing section. Subsequently, holes are drilled at the corresponding locations on the filled precast slab and wall according to the design positions. The hole depth and diameter meet the anchor bolt specifications. After drilling, the holes are cleaned and dust is removed. The chemical... The chemical anchor 6 is inserted into the hole, and the screw is rotated and inserted using a special tool to break the chemical tube and mix it thoroughly. After the chemical has cured (curing time according to product instructions), the screw forms a reliable connection with the precast slab and wall, completing the anchoring. Grouting can eliminate structural weaknesses caused by holes in the precast slab, restore the integrity of the slab, and avoid stress concentration. The chemical anchor provides high-strength anchoring force through the bonding effect between the chemical and the hole wall, and does not cause mechanical damage to the precast slab, making it suitable for secondary reinforcement of precast components. The combination of the two makes the connection between the wall and the precast slab more stable, significantly improving the load-bearing capacity and deformation resistance of the structure, making it especially suitable for wall reinforcement in the renovation of old buildings.

[0020] Example 4: like Figure 2 As shown, the wall 1 includes sleep bricks 8 and purlins 9. The cavities of the sleep bricks 8 and purlins 9 are filled with grout and anchored using chemical anchors 6.

[0021] In this implementation case, grouting holes (approximately 20-30mm in diameter) are first drilled at regular intervals (e.g., 500-800mm) along the height of the wall. These holes must penetrate the brick layer and reach the cavity. Vent holes are also installed at the top of the cavity. The cavity is cleaned of broken bricks, dust, and other debris, rinsed with a high-pressure water gun, and then dried. A free-flowing, non-shrink grout (with a micro-expansion agent added to ensure compaction) is prepared and slowly injected through the bottom grouting holes using a grouting pump until it overflows from the top vent holes. The grouting holes are then closed, and pressure curing is maintained. After the grout solidifies (approximately 48 hours), a solid structure is formed, filling the weak points of the cavity. Subsequently, drilling positions are marked on the wall surface according to the designed spacing (prioritizing areas with loose bricks, avoiding brick joints). The drilling depth must penetrate the filled cavity layer and... Enter the solid part on the other side of the wall (depth ≥ 10d, where d is the diameter of the anchor bolt), drill the hole, and clean the debris inside the hole with a brush and a high-pressure air pump; insert the chemical anchor 6 agent tube, rotate the inserted screw to make the agent fully mix and solidify. After solidification, the screw and the filled wall form an integral load-bearing node. Grouting can eliminate the cavity between the hollow bricks and the mortar bricks, transforming the hollow wall into a near-solid structure, which greatly improves the integrity and shear resistance of the wall; the chemical anchor 6 achieves reliable anchoring with the solid base layer after filling, avoiding loosening of the anchor bolt due to the presence of cavity when under stress, and significantly enhancing the connection strength of the node; the combination of the two takes into account the improvement of the overall rigidity of the wall and the reliability of local anchoring, which is especially suitable for the seismic reinforcement and load upgrading of traditional hollow walls, and the construction causes little damage to the original wall and can preserve the original structural form of the building.

[0022] Example 5: like Figure 1 As shown, the welded ends of the angle steel 5 are kept perpendicular to the mating surface.

[0023] In this implementation case, firstly, based on the angle of the mating surfaces (usually a plane or a vertical plane), use tools such as a square and a level to mark a baseline perpendicular to the mating surfaces at both ends of the angle steel. Ensure that the perpendicularity error between the baseline and the side of the angle steel is ≤1°. Then, fix the angle steel using tooling fixtures (such as a right-angle fixing bracket), ensuring that the parts to be welded at both ends of the angle steel are strictly aligned with the baseline and in close contact with the mating surfaces, preventing misalignment during welding. A symmetrical welding method is used. First, spot weld positioning is performed at both ends. After checking that the perpendicularity is correct, welding is carried out layer by layer along the welding line. After each layer of weld is completed... Use a square to check the verticality until welding is complete, and finally grind and trim the weld. This ensures that angle steel 5 and the mating surface form a precise stress angle, so that the load is evenly distributed in the vertical direction, avoiding stress concentration caused by additional bending moment due to angle deviation. Vertically welded joints have stronger overall integrity, which can improve the shear and bending resistance of the structure, especially in frame connections or support systems, and can effectively enhance the stability of the joint. At the same time, the standardized vertical angle facilitates the dimensional control of subsequent component installation, reduces secondary adjustments caused by welding deviations, and improves construction efficiency.

[0024] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A hollow wall ring beam reinforcement structure, comprising a wall (1) located at a floor level, wherein a steel beam (2) is embedded in the wall (1), characterized in that: The wall (1) has a steel plate (3) installed on the inner side of the wall surface, the wall (1) has a glue-filled dense layer (4), an angle steel (5) is installed between the steel plate (3) and the steel beam (2), and a number of chemical anchors (6) are installed between the steel plate (3) and the wall (1).

2. The hollow bucket wall ring beam reinforcement structure according to claim 1, characterized in that: The angle steel (5) is installed between the steel plate (3) and the steel beam (2) by welding.

3. The hollow bucket wall ring beam reinforcement structure according to claim 2, characterized in that: The wall (1) includes the original precast slab (7), the holes of the original precast slab (7) are filled with grout, and the chemical anchors (6) are used for anchoring.

4. The hollow bucket wall ring beam reinforcement structure according to claim 3, characterized in that: The wall (1) includes a sleep brick (8) and a hopper brick (9), the cavity of the sleep brick (8) and the hopper brick (9) is filled with grout and anchored using the chemical anchor bolt (6).

5. The hollow bucket wall ring beam reinforcement structure according to claim 4, characterized in that: The welded ends of the angle steel (5) are kept perpendicular to the mating surface.

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