A shear wall large-size opening combined reinforcement structure and reinforcement method

Abstract

The present invention relates to the field of building technology, and in particular to a combined reinforcement structure and reinforcement method for a large-sized opening of a shear wall, wherein the reinforcement structure comprises a plurality of first steel bars implanted at intervals along the vertical direction at the vertical edge of the opening of the shear wall; a plurality of second steel bars implanted at intervals along the horizontal direction at the horizontal edge of the opening of the shear wall; a steel plate fixedly arranged on opposite sides of the opening of the shear wall along the circumference of the opening of the shear wall; a first angle steel disposed in the opening of the shear wall along the circumference of the opening of the shear wall and connected to the steel plate; and concrete poured into a receiving cavity formed by connecting the steel plate and the first angle steel. The present invention can ensure that the shear wall has a good stress state after the opening of the shear wall is reinforced.

Description

Technical Field

[0001] The invention relates to the field of building technology, and in particular to a shear wall large-size opening combined reinforcement structure and a reinforcement method. Background Art

[0002] As more and more buildings enter the stock stage, the choice of renovation and reinforcement of existing buildings has become the main choice. Due to the change of use function, it is necessary to open door holes or window holes in the existing shear walls. Shear walls mainly bear horizontal loads and vertical loads caused by wind loads or earthquakes. Opening holes in the wall will greatly affect the stress state of the shear wall, thereby affecting the structural safety.

[0003] Currently, there is no standard specification specifically for the method of opening holes in existing shear walls. In the prior art, the first angle steel is usually directly wrapped around the shear wall after the hole is opened and fixed with bolts. The disadvantage of this method is that it cannot meet the requirements of large-sized holes (width greater than 1200mm). Summary of the invention

[0004] The object of the present invention is to provide a shear wall large-size opening combined reinforcement structure and reinforcement method, which can ensure that the shear wall has a good stress state after the opening of the shear wall is reinforced.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] A shear wall large-size opening combined reinforcement structure, comprising:

[0007] A plurality of first steel bars are implanted at intervals along the vertical direction at the vertical edge of the opening of the shear wall;

[0008] A plurality of second steel bars are implanted at intervals in the horizontal direction at the horizontal edge of the opening of the shear wall;

[0009] Steel plates are fixedly arranged on opposite sides of the shear wall along the circumference of the opening of the shear wall;

[0010] A first angle steel is arranged in the opening of the shear wall along the circumference of the opening and connected to the steel plate;

[0011] Concrete is poured into the accommodation cavity formed by connecting the steel plate and the first angle steel.

[0012] Optionally, the steel plate and the first angle steel are connected via a tie plate, and the tie plate, the first angle steel and the steel plate together form the accommodating cavity.

[0013] Optionally, it also includes a second angle steel and a third angle steel, the second angle steel is arranged in the horizontal direction at the connection between the opening of the shear wall and the lower floor slab, and is located on the upper end surface of the lower floor slab, the third angle steel is arranged parallel to the second angle steel and is spaced apart from each other on the lower end surface of the lower floor slab, the third angle steel and the second angle steel are fixed by a through-plate connector, and the second angle steel is welded to the steel plate.

[0014] Optionally, the through-plate connector is a through-plate tension screw.

[0015] Optionally, the steel plates located on opposite sides of the shear wall are fixedly connected by through-wall connectors.

[0016] Optionally, the through-wall connector is a through-wall tension screw.

[0017] Optionally, a plurality of the first steel bars are connected by first stirrups.

[0018] Optionally, a plurality of the second steel bars are connected by second stirrups.

[0019] A combined reinforcement method for large-size openings in a shear wall comprises the following steps:

[0020] S1. Openings are made in shear walls;

[0021] S2, expanding the shear wall along the circumferential edge of the opening in a direction away from the opening to a set width, removing the concrete and retaining the steel bars;

[0022] S3, implanting a plurality of first steel bars into the shear wall at intervals at the vertical edge of the opening along the vertical direction;

[0023] S4, implanting a plurality of second steel bars into the shear wall at intervals at the horizontal edge of the opening along the horizontal direction;

[0024] S5. Fixing steel plates on opposite sides of the shear wall along the circumference of the opening;

[0025] S6. Disposing a first angle steel in the hole along the circumference of the hole, wherein the first angle steel is connected to the steel plate;

[0026] S7. Set up a formwork and pour concrete into the accommodating cavity formed by the first angle steel and the steel plate.

[0027] Optionally, in step S7, after the concrete solidifies, the formwork is removed, and glue is injected into the gap between the steel plate and the concrete for sealing.

[0028] Beneficial effects of the present invention:

[0029] The present invention provides a combined reinforcement structure and reinforcement method for a large-sized opening of a shear wall. A first steel bar and a second steel bar are implanted in the opening of the shear wall, and steel plates are arranged on both sides of the shear wall in the circumferential direction of the opening. A first angle steel is arranged in the opening, and the first angle steel is connected to the steel plate. Concrete is poured in a receiving cavity formed by the connection of the steel plate and the first angle steel, so that the steel structure composed of the first steel bar, the second steel bar, the steel plate and the first angle steel and the concrete are used to reinforce the shear wall after the opening, so that after the shear wall opening is reinforced, the shear wall has a good stress state. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of a shear wall large-size opening combined reinforcement structure of the present invention;

[0031] Figure 2 It is a schematic diagram of implanting a first steel bar and a second steel bar in a shear wall large-size opening combined reinforcement structure of the present invention;

[0032] Figure 3 It is a schematic diagram of a shear wall large-size opening combined reinforcement structure after pouring concrete in the present invention.

[0033] In the figure:

[0034] 1-shear wall; 2-first steel bar; 21-first stirrup; 3-second steel bar; 31-second stirrup; 4-lower floor slab; 5-steel plate; 51-through-wall connector; 6-attachment plate; 7-first angle steel; 8-second angle steel; 81-through-plate connector; 9-concrete. DETAILED DESCRIPTION

[0035] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and implementation methods. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention are shown in the accompanying drawings, rather than all of them.

[0036] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] In order to ensure that the shear wall has a good stress state after the opening and reinforcement, Figure 1-Figure 3As shown, the present invention provides a shear wall large-size opening combined reinforcement structure, comprising a plurality of first steel bars 2, a plurality of second steel bars 3, a steel plate 5, a first angle steel 7 and concrete 9. The first steel bars 2 are implanted at intervals along the vertical direction at the vertical edge of the opening of the shear wall 1; the plurality of second steel bars 3 are implanted at intervals along the horizontal direction at the horizontal edge of the opening of the shear wall 1; the steel plate 5 is fixedly arranged on opposite sides of the shear wall 1 along the circumferential direction of the opening of the shear wall 1; the first angle steel 7 is arranged in the opening of the shear wall 1 along the circumferential direction and connected to the steel plate 5; the concrete 9 is poured in the accommodation cavity formed by the connection of the steel plate 5 and the first angle steel 7.

[0038] A first steel bar 2 and a second steel bar 3 are implanted in the opening of the shear wall 1, and steel plates 5 are arranged on both sides of the shear wall 1 in the circumferential direction of the opening, a first angle steel 7 is arranged in the opening, the first angle steel 7 is connected to the steel plate 5, and concrete 9 is poured in the accommodating cavity formed by the connection of the steel plate 5 and the first angle steel 7, so that the shear wall 1 after the opening is reinforced by the steel structure composed of the first steel bar 2, the second steel bar 3, the steel plate 5 and the first angle steel 7 and the concrete 9, so that after the shear wall 1 is opened and reinforced, the shear wall 1 has a good stress state, and the shear wall 1 after the opening has a high degree of safety and reliability.

[0039] Furthermore, the steel plate 5 and the first angle steel 7 are connected by the tie plate 6, and the tie plate 6, the first angle steel 7 and the steel plate 5 together form a receiving cavity. In the subsequent pouring process, the steel structure composed of the first steel bar 2, the second steel bar 3, the steel plate 5 and the first angle steel 7 is combined with the concrete 9, so that the strength of the reinforced structure is improved. Specifically, one end of the tie plate 6 is welded to the steel plate 5, and the other end is welded to the first angle steel 7.

[0040] Furthermore, the reinforcement structure also includes a second angle steel 8 and a third angle steel. The second angle steel 8 is arranged at the connection between the opening of the shear wall 1 and the lower floor 4 in the horizontal direction, and is located on the upper end surface of the lower floor 4. The third angle steel is arranged parallel to the second angle steel 8 and spaced apart on the lower end surface of the lower floor 4. The third angle steel and the second angle steel 8 are fixed by a through-plate connector 81, and the second angle steel 8 is welded to the steel plate 5. By arranging the second angle steel 8 and the third angle steel, the reinforcement structure is tightly connected to the lower floor 4, ensuring the stability of the connection between the reinforcement structure and the lower floor 4 after pouring the concrete 9. Specifically, in the present embodiment, the through-plate connector 81 is a through-plate tension screw. The second angle steel 8 and the third angle steel are tightly connected by the through-plate tension screw.

[0041] Furthermore, the steel plates 5 located on opposite sides of the shear wall 1 are fixedly connected by through-wall connectors 51. Specifically, the through-wall connectors 51 are through-wall tension screws. The steel plates 5 located on both sides of the shear wall 1 are tightly connected by using the through-wall tension screws to ensure the stability of the connection between the reinforcement structure and the shear wall 1 after pouring the concrete 9.

[0042] Furthermore, the plurality of first steel bars 2 are connected by first stirrups 21, and the plurality of second steel bars 3 are connected by second stirrups 31. The first stirrups 21 and the second stirrups 31 are welded to the exposed steel bars of the shear wall 1 after the opening, so that the first steel bars 2, the second steel bars 3 and the original steel bars form an integrated structure, ensuring the integrity of the reinforced structure and the original structure of the shear wall 1 after pouring the concrete 9, thereby further improving the sufficient strength of the reinforced structure.

[0043] This embodiment also provides a combined reinforcement method for a large-sized opening in a shear wall 1, comprising the following steps:

[0044] S1. Open an opening on shear wall 1;

[0045] S2. A set width is set along the circumferential edge of the opening on the shear wall 1 in the direction away from the opening, the concrete is chiseled off, and the steel bars are retained; specifically, the width of the expansion is twice the thickness of the shear wall 1; of course, the specific width of the expansion can be set according to actual needs, and no excessive restrictions are imposed here.

[0046] S3. Along the vertical direction, multiple first steel bars 2 are implanted into the shear wall 1 at intervals at the vertical edge of the opening; the multiple first steel bars 2 are connected by first stirrups 21, and the first stirrups 21 are welded to the exposed steel bars of the original shear wall 1.

[0047] S4. Along the horizontal direction, multiple second steel bars 3 are implanted into the shear wall 1 at intervals at the horizontal edge of the opening; the multiple second steel bars 3 are connected by second stirrups 31, and the second stirrups 31 are welded to the exposed steel bars of the original shear wall 1.

[0048] S5. Steel plates 5 are fixedly arranged on two opposite sides of the shear wall 1 along the circumference of the opening; the steel plates 5 located on both sides of the shear wall 1 are fixedly connected by through-wall connectors 51.

[0049] S6. A first angle steel 7 is arranged inside the opening along the circumference of the opening, and the first angle steel 7 is connected to the steel plate 5; specifically, the first angle steel 7 is connected to the steel plate 5 through a gusset plate 6; a second angle steel 8 is arranged on the upper end surface of the lower floor slab 4, and a third angle steel is arranged on the lower end surface of the lower floor slab 4, and the third angle steel and the second angle steel 8 are connected through a through-plate connector 81.

[0050] S7, setting up the formwork, and pouring concrete 9 into the accommodation cavity formed by the first angle steel 7 and the steel plate 5.

[0051] Furthermore, in step S7, after the concrete 9 solidifies, the formwork is removed, and glue is injected into the gap between the steel plate 5 and the concrete 9 to seal it.

[0052] It is worth noting that the reinforcement construction process requirements involved in the plan (embedded reinforcement, welding, steel plate reinforcement, increased cross-section reinforcement, etc.) should all comply with the corresponding reinforcement specification requirements.

[0053] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A shear wall large-size opening combined reinforcement structure, characterized in that: include: A plurality of first steel bars (2) are implanted at intervals along the vertical direction at the vertical edge of the opening of the shear wall (1); A plurality of second steel bars (3) are implanted at intervals in the horizontal direction at the horizontal edge of the opening of the shear wall (1); Steel plates (5) are fixedly arranged on two opposite sides of the shear wall (1) along the circumferential direction of the opening of the shear wall (1); A first angle steel (7) is arranged in the opening of the shear wall (1) along the circumference of the opening and connected to the steel plate (5); Concrete (9) is poured into the accommodation cavity formed by connecting the steel plate (5) and the first angle steel (7); A plurality of first steel bars (2) are connected by first stirrups (21), and a plurality of second steel bars (3) are connected by second stirrups (31); the first stirrups (21) and the second stirrups (31) are welded to the exposed steel bars of the shear wall (1) after the opening.

2. A shear wall large-size opening combined reinforcement structure according to claim 1, characterized in that: The steel plate (5) and the first angle steel (7) are connected via a tie plate (6), and the tie plate (6), the first angle steel (7) and the steel plate (5) together form the accommodating cavity.

3. A shear wall large-size opening combined reinforcement structure according to claim 1, characterized in that: It also includes a second angle steel (8) and a third angle steel, wherein the second angle steel (8) is arranged in the horizontal direction at the connection between the opening of the shear wall (1) and the lower floor slab (4), and is located on the upper end surface of the lower floor slab (4); the third angle steel and the second angle steel (8) are arranged in parallel and spaced apart on the lower end surface of the lower floor slab (4); the third angle steel and the second angle steel (8) are fixed by a through-plate connector (81), and the second angle steel (8) is welded to the steel plate (5).

4. A shear wall large-size opening combined reinforcement structure according to claim 3, characterized in that: The through-plate connecting member (81) is a through-plate tensioning screw.

5. The shear wall large-size opening combined reinforcement structure according to claim 1 is characterized in that: The steel plates (5) located on two opposite sides of the shear wall (1) are fixedly connected via wall-penetrating connectors (51).

6. A shear wall large-size opening combined reinforcement structure according to claim 5, characterized in that: The wall-penetrating connector (51) is a wall-penetrating tensioning screw.

7. A combined reinforcement method for large-size openings in shear walls, characterized in that: The steps include: S1. Opening an opening in the shear wall (1); S2, expanding the shear wall (1) along the circumferential edge of the opening in a direction away from the opening to a set width, removing the concrete and retaining the steel bars; S3, implanting a plurality of first steel bars (2) into the shear wall (1) at intervals along the vertical direction at the vertical edge of the opening; the plurality of first steel bars (2) are connected by first stirrups (21), and the first stirrups (21) are welded to the exposed steel bars of the original shear wall (1); S4, implanting a plurality of second steel bars (3) into the shear wall (1) at intervals along the horizontal direction at the horizontal edge of the opening; the plurality of second steel bars (3) are connected by second stirrups (31), and the second stirrups (31) are welded to the exposed steel bars of the original shear wall (1); S5, fixing steel plates (5) on opposite sides of the shear wall (1) along the circumference of the opening; S6. Arranging a first angle steel (7) in the hole along the circumference of the hole, wherein the first angle steel (7) is connected to the steel plate (5); S7, setting up a formwork, and pouring concrete (9) into the accommodation cavity formed by the connection between the first angle steel (7) and the steel plate (5).

8. A combined reinforcement method for large-size openings in a shear wall according to claim 7, characterized in that: In step S7, after the concrete (9) solidifies, the formwork is removed, and glue is injected into the gap between the steel plate (5) and the concrete (9) for sealing.

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