Door and window opening reinforcing structure of existing masonry wall
By setting concealed notches and steel skeletons on the wall of the masonry structure and pouring a concrete protective layer, the problem of lowering the load capacity of the masonry structure wall after opening the hole is solved, and the reinforcement effect with short construction period, low cost and safe is achieved.
Patent Information
- Application Number
- CN202420846239.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-23
- Publication Date
- 2025-03-11
- Estimated Expiration
- 2034-04-23
AI Technical Summary
When opening doors and windows on masonry structure walls, conventional reinforcement methods lead to reduced load-bearing capacity, cumbersome processes, safety hazards, and high costs.
Channel steel is installed using concealed notches, and mortar is filled at both ends of the channel steel. The inner longitudinal bar, U-shaped stirrup and outer longitudinal bar are installed to form a steel frame. Perforated and perforated steel bars are drilled, and the concrete protective layer is finally poured.
Minimize damage to the original masonry wall to the greatest extent, with short construction period, convenient construction, low cost and high safety.
Smart Images
Figure CN222595624U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical direction of building renovation and reconstruction, and specifically relates to a reinforcement structure for door and window openings of an existing masonry wall. Background Art
[0002] Many early masonry structures can no longer meet people's living and use needs. When the original masonry structure is renovated, the original layout needs to be adjusted, and door and window openings will be opened in the original masonry walls. Since masonry walls are heavy structures, opening holes in masonry walls will reduce the bearing capacity of the original masonry walls. The door and window openings need to be reinforced when opening holes. The conventional practice is to add concrete lintels and door and window frame columns. This form has cumbersome construction procedures, causes great damage to the original structure, and has safety hazards. The labor cost, capital cost, and time cost are high. It is necessary to provide a construction process that is safe, time-saving, convenient, and low-cost.
[0003] The utility model provides a method for reinforcing door and window openings of existing masonry walls, which has the following advantages over conventional methods: short construction period, convenient construction, low cost, high safety, etc. Utility Model Content
[0004] The purpose of the utility model is to provide a reinforcement structure for door and window openings of existing masonry walls in order to solve the problems raised in the above-mentioned background technology.
[0005] In order to solve the above technical problems, the utility model provides the following technical solutions: a reinforcement structure for door and window openings of an existing masonry wall, comprising an existing masonry structure wall, a concealed groove is provided above the door and window opening of the existing masonry structure wall, a channel steel is provided in the concealed groove, and both ends of the channel steel are filled with mortar.
[0006] The utility model further describes that inner longitudinal reinforcement is installed on the inner side of the existing masonry structure wall, the lower end of the inner longitudinal reinforcement is anchored in the lower floor slab, and the upper end of the inner longitudinal reinforcement is folded outward and anchored in the existing masonry structure wall.
[0007] The utility model further illustrates that U-shaped stirrups are integrally tied to the inner longitudinal reinforcement at intervals, and outer longitudinal reinforcements are tied to the other side of the U-shaped stirrups. The inner longitudinal reinforcement, U-shaped stirrups and outer longitudinal reinforcements together constitute a steel skeleton.
[0008] The utility model further illustrates that the inner longitudinal reinforcement, the outer longitudinal reinforcement and the U-shaped stirrups form an intersection, and the wall at the position corresponding to the intersection is punched to obtain a hole located on the wall.
[0009] The utility model further describes that tension steel bars are inserted into the holes.
[0010] The utility model further illustrates that the steel reinforcement skeleton is cast with a concrete protective layer.
[0011] Compared with the prior art, the beneficial effect achieved by the utility model is that the utility model can minimize the damage to the original masonry wall, and at the same time has the advantages of short construction period, convenient construction, low cost, high safety, etc. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:
[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0014] Figure 2 It is a cross-sectional schematic diagram of the utility model;
[0015] Figure 3 It is a cross-sectional schematic diagram of the utility model at the dark notch;
[0016] In the figure: 1. Existing masonry structural wall; 2. Channel steel; 3. Mortar; 4. Inner longitudinal reinforcement; 5. U-shaped stirrups; 6. Tensile reinforcement; 7. Concrete cover; 8. Concealed notch; 9. Outer longitudinal reinforcement; 10. Holes; 11. Hooks. DETAILED DESCRIPTION
[0017] The following is a further non-limiting detailed description of the technical solution of the utility model in conjunction with the preferred embodiments and the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of 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.
[0018] See also Figure 1-3 The utility model provides a technical solution: a reinforcement structure for door and window openings of existing masonry walls, including an existing masonry structure wall 1. Before opening the opening, the opening positions on both sides of the existing masonry structure wall 1 are laid out to ensure smooth progress of the subsequent work. A dark groove 8 is provided above the door and window openings of the existing masonry structure wall 1. A channel steel 2 is provided in the dark groove 8. The length of the channel steel 2 exceeds the width of the door and window openings, so that the two ends of the channel steel 2 can be placed above the existing masonry structure wall 1 on both sides of the openings. Mortar 3 is filled at both ends of the channel steel 2. The channel steel 2 supports the upper wall. Then, a static cutting machine is used to cut the door and window openings.
[0019] An inner longitudinal reinforcement 4 is installed on the inner side of the existing masonry structural wall 1 where the door and window openings are cut, the lower end of the inner longitudinal reinforcement 4 is anchored in the lower floor slab, and the upper end of the inner longitudinal reinforcement 4 is folded outward and anchored in the existing masonry structural wall 1;
[0020] U-shaped stirrups 5 are integrally tied to the inner longitudinal reinforcement 4 at intervals, and outer longitudinal reinforcements 9 are tied to the other side of the U-shaped stirrups 5. The two U-shaped legs of the U-shaped stirrups 5 are slightly wider than the existing masonry structure wall 1. The inner longitudinal reinforcement 4, the U-shaped stirrups 5 and the outer longitudinal reinforcement 9 together constitute a steel skeleton;
[0021] The tied inner longitudinal reinforcement 4, outer longitudinal reinforcement 9 and U-shaped stirrup 5 form an intersection, and the wall at the position corresponding to the intersection is punched to obtain a hole 10 located on the wall;
[0022] The inside of the hole 10 is penetrated with a tension steel bar 6, and the two ends of the tension steel bar 6 are hooks 11 bent into 180 degrees. The hooks 11 are hooked at the intersection formed by the steel bars, and the inner longitudinal bars 4, the outer longitudinal bars 9 and the U-shaped stirrups 5 are hooked into a whole, which is convenient for the later pouring of concrete and improves the firmness;
[0023] Formwork is carried out at the steel skeletons on both sides of the opening. After the formwork is completed, a concrete protective layer 7 is poured on the steel skeleton. The concrete protective layer 7 is fine stone concrete of not less than C30. After the concrete protective layer 7 reaches a certain strength, the formwork can be removed to complete the reinforcement of the door and window openings of the masonry wall.
[0024] Working principle:
[0025] Before opening the existing masonry structure wall 1, two channel steels 2 are pre-buried on the pre-opened openings on both sides of the wall to support the upper wall. The two ends of the channel steel 2 should be wider than the opening size. Then a static cutting machine is used to cut the wall to cut the door and window openings. Then, inner longitudinal reinforcement 4, outer longitudinal reinforcement 9, U-shaped stirrups 5 and tension reinforcement 6 are installed on the inner side and both sides of the opening. After the installation is completed, a concrete protective layer 7 is cast with formwork. Compared with conventional methods, it has the following advantages: short construction period, convenient construction, low cost, high safety, etc.
[0026] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.
[0027] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit them. Although the utility model is described in detail with reference to the above embodiments, a person skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some of the technical features can be replaced by equivalents, and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.
Claims
1. A reinforcement structure for door and window openings of an existing masonry wall, comprising an existing masonry structure wall (1), characterized in that: A concealed notch (8) is provided above the door and window openings of the existing masonry structure wall (1), a channel steel (2) is provided in the concealed notch (8), and both ends of the channel steel (2) are filled with mortar (3).
2. The existing masonry wall door and window opening reinforcement structure according to claim 1, characterized in that: An inner longitudinal reinforcement (4) is installed on the inner side of the existing masonry structure wall (1), the lower end of the inner longitudinal reinforcement (4) is anchored in the lower floor slab, and the upper end of the inner longitudinal reinforcement (4) is folded outward and anchored in the existing masonry structure wall (1).
3. The existing masonry wall door and window opening reinforcement structure according to claim 2, characterized in that: U-shaped stirrups (5) are integrally tied to the inner longitudinal reinforcement (4) at intervals, and outer longitudinal reinforcements (9) are tied to the other side of the U-shaped stirrups (5). The two U-shaped legs of the U-shaped stirrups (5) are wider than the existing masonry structure wall (1). The inner longitudinal reinforcement (4), the U-shaped stirrups (5) and the outer longitudinal reinforcement (9) together constitute a steel reinforcement skeleton.
4. The existing masonry wall door and window opening reinforcement structure according to claim 3, characterized in that: The inner longitudinal reinforcement (4), the outer longitudinal reinforcement (9) and the U-shaped stirrup (5) form an intersection, and the wall at the position corresponding to the intersection is punched to obtain a hole (10) located on the wall.
5. The existing masonry wall door and window opening reinforcement structure according to claim 4, characterized in that: A tension steel bar (6) is inserted into the hole (10), and the two ends of the tension steel bar (6) are hooks (11) bent at 180 degrees, and the hooks (11) are hooked at the intersection formed by the steel bars.
6. The existing masonry wall door and window opening reinforcement structure according to claim 5, characterized in that: The steel reinforcement skeleton is cast with a concrete protective layer (7).