Reinforcing structure for large hole of prefabricated external wall panel

Abstract

The utility model discloses a reinforcing structure for a large hole of a prefabricated external wall panel, which is characterized in that holes are formed among an outer leaf wall, an inner leaf wall and an insulation board, and an inner leaf wall reinforcing component is fixed in a steel bar structure around the hole of the inner leaf wall; the inner leaf wall reinforcing assembly comprises inner transverse reinforcing channel steel, outer transverse reinforcing channel steel, inner longitudinal reinforcing channel steel and outer longitudinal reinforcing channel steel. Through the arrangement of the hole additional reinforcing steel bars, the hole additional anti-crack steel bars and the inner leaf wall reinforcing assembly, the strength and rigidity of the wall body around the hole of the inner leaf wall are integrally improved through the inner leaf wall reinforcing assembly, even if the inner leaf wall is stressed to the outside, the hole in the middle of the wall body with high strength and rigidity is not prone to being damaged, and the service life of the inner leaf wall is prolonged. The inner-layer channel steel structure and the outer-layer channel steel structure further enhance the stability of the inner leaf wall reinforcing assembly, the structure is suitable for the situation that a large hole is formed, the rigidity and strength of the prefabricated concrete exterior wall cladding with the hole can be enhanced, and meanwhile cracks at the corners of the hole can be effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of building structures, in particular to a reinforcement structure of a large opening of a prefabricated exterior wall panel. Background Art

[0002] In prefabricated buildings, prefabricated exterior wall panels are produced in the factory and then transported to the construction site for assembly. The prefabricated exterior wall panels should have sufficient bearing capacity, rigidity and the ability to adapt to the deformation of the main structure. They should be safe under adverse combinations such as gravity load, wind load, earthquake action, temperature action and the influence of deformation of the main structure.

[0003] The existing prefabricated exterior wall panel opening structure has taken reinforcement measures to prevent cracking due to stress concentration at the opening edge. However, it is not suitable for prefabricated exterior wall panels with large openings. When used in structures with large openings, due to insufficient strength and rigidity, and stress concentration around the opening, cracks are easily generated at the weak opening edge. Utility Model Content

[0004] The purpose of the present utility model is to provide a reinforcement structure for a large opening of a prefabricated exterior wall panel, so as to solve the problem that the above-mentioned prior art prefabricated exterior wall panel opening structure proposed in the background art has stress concentration at the opening edge, and reinforcement measures are taken to prevent cracking, but it is not suitable for prefabricated exterior wall panels with large openings. When used in structures with large openings, due to insufficient strength and rigidity, and uneven stress around the opening, cracks are easily generated at the weak opening edge.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a reinforcement structure for a large opening of a prefabricated exterior wall panel, comprising an outer leaf wall, an inner leaf wall, an insulation board and an opening, wherein the insulation board is located between the outer leaf wall and the inner leaf wall, and an opening is provided between the outer leaf wall, the inner leaf wall and the insulation board, and further comprising additional reinforcement steel bars for the opening, additional anti-cracking steel bars for the opening and an inner leaf wall reinforcement assembly, wherein the outer leaf wall and the inner leaf wall both have a reinforcement structure, and the additional reinforcement steel bars for the opening are provided in multiple groups in the outer leaf wall and the inner leaf wall, and are respectively distributed on the steel bars. At a position near the opening in the structure, multiple groups of additional anti-cracking steel bars are provided in the outer leaf wall and the inner leaf wall, and are fixed at inclined angles on the steel bar structures at the four corners of the opening. An inner leaf wall reinforcement assembly is fixed inside the steel bar structure around the inner leaf wall opening. The inner leaf wall reinforcement assembly includes an inner transverse reinforcement channel steel, an outer transverse reinforcement channel steel, an inner longitudinal reinforcement channel steel and an outer longitudinal reinforcement channel steel. The inner transverse reinforcement channel steel, the outer transverse reinforcement channel steel, the inner longitudinal reinforcement channel steel and the outer longitudinal reinforcement channel steel are abutted and connected to each other.

[0006] Preferably, the two groups of inner transverse reinforcing channel steels are fixedly connected to the two groups of inner longitudinal reinforcing channel steels to form a rectangular frame, the two ends of the two groups of inner longitudinal reinforcing channel steels are respectively abutted against the outer transverse reinforcing channel steels on the outside of the two groups of inner transverse reinforcing channel steels, and the two ends of the two groups of outer transverse reinforcing channel steels are abutted against the outer longitudinal reinforcing channel steels.

[0007] Preferably, the inner leaf wall reinforcement assembly further includes support steel plates, which are equidistantly distributed and fixed between the inner transverse reinforcement channel steel and the outer transverse reinforcement channel steel, and between the inner longitudinal reinforcement channel steel and the outer longitudinal reinforcement channel steel.

[0008] Preferably, the inner leaf wall reinforcement assembly further comprises a concave-convex steel plate, which is distributed around the opening and fixed by screws to the inner side of the rectangular frame of the inner transverse reinforcement channel steel and the inner longitudinal reinforcement channel steel.

[0009] Preferably, the additional reinforcing steel bars distributed on the sides of the opening are provided with two layers, one close to the two edges of the steel bar structure.

[0010] Preferably, the additional anti-cracking steel bars fixed on the four corners of the opening of the steel structure are provided with two layers, which are respectively fixed on the two outer sides of the steel structure.

[0011] Preferably, a concave structure is provided around the hole on one side of the insulation board close to the inner leaf wall, and the thickness of the concave structure portion of the insulation board is smaller than that of other positions.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] The utility model provides additional reinforcement steel bars at the opening, additional anti-cracking steel bars at the opening, and an inner leaf wall reinforcement assembly. The additional reinforcement steel bars at the opening are connected to the wall at the edge around the opening to form a whole, which is evenly stressed and effectively prevents the formation of cracks around the openings of the outer and inner leaf walls. The additional anti-cracking steel bars at the opening reinforce the wall at the four corners of the opening, which can protect the openings of the outer and inner leaf walls from cracks from the four corners. The inner leaf wall reinforcement assembly increases the strength and rigidity of the wall around the inner leaf wall opening as a whole, and even when subjected to external forces, it is not easy to damage the opening in the middle of the wall with higher strength and rigidity. The inner and outer two-layer channel steel structure further strengthens the stability of the inner leaf wall reinforcement assembly, provides higher strength and rigidity for the inner leaf wall, and protects the opening position. This structure strengthens the weakest part of the opening and is suitable for large openings, especially when the opening width is not less than half the width of the exterior wall panel. It can enhance the rigidity and strength of precast concrete exterior wall panels with openings, and effectively avoid cracks in the corners of the openings. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1This is a schematic cross-sectional view of the reinforcement structure of a large opening of a prefabricated exterior wall panel of the present invention.

[0015] Figure 2 This is a schematic diagram of the internal structure of the inner leaf wall of the present utility model.

[0016] Figure 3 This is a schematic diagram of the internal structure of the outer leaf wall of the utility model.

[0017] Figure 4 This is a schematic structural diagram of the insulation board of the present utility model.

[0018] Figure 5 This is a schematic structural diagram of the inner leaf wall reinforcement component of the present invention.

[0019] Figure 6 This is a schematic diagram of the structure of the transverse reinforcement channel steel and the longitudinal reinforcement channel steel of the present invention.

[0020] Figure 7 This is a schematic diagram of the support steel plate distribution structure of the present utility model.

[0021] Figure 8 This is a schematic diagram of the concave-convex steel plate distribution structure of the present invention.

[0022] In the figure: 1. Outer leaf wall; 2. Inner leaf wall; 3. Insulation board; 4. Opening; 5. Reinforcement structure; 51. Longitudinal rib longitudinal reinforcement; 52. Longitudinal rib stirrups; 6. Additional reinforcement steel bars for opening; 7. Additional anti-cracking steel bars for opening; 8. Inner leaf wall reinforcement assembly; 81. Inner transverse reinforcement channel steel; 82. Outer transverse reinforcement channel steel; 83. Inner longitudinal reinforcement channel steel; 84. Outer longitudinal reinforcement channel steel; 85. Support steel plate; 86. Concave-convex steel plate. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] An embodiment provided by the present invention: Figure 1 、 Figure 2 and Figure 3 As shown, a reinforcement structure of a large opening of a prefabricated exterior wall panel includes an outer leaf wall 1, an inner leaf wall 2, an insulation board 3, an opening 4, a steel structure 5, additional reinforcement steel bars for the opening 6, additional anti-cracking steel bars for the opening 7 and an inner leaf wall reinforcement assembly 8.

[0025] like Figure 1 and Figure 4As shown, the insulation board 3 is located between the outer leaf wall 1 and the inner leaf wall 2. An opening 4 is defined between the outer leaf wall 1, the inner leaf wall 2, and the insulation board 3. A recessed structure surrounds the opening 4 on the side of the insulation board 3 closest to the inner leaf wall 2. The thickness of the recessed structure is smaller than that of the rest of the board 3. The recessed structure is filled by the inner leaf wall 2, thereby increasing the wall thickness around the opening 4 and providing greater stability.

[0026] like Figure 2 and Figure 3 As shown, there is a steel structure 5 inside the outer leaf wall 1 and the inner leaf wall 2. The steel structure 5 includes longitudinal rib steel bars 51 and longitudinal rib stirrups 52. The longitudinal rib steel bars 51 and longitudinal rib stirrups 52 are evenly distributed in the entire steel structure 5.

[0027] Multiple groups of additional reinforcement bars 6 are installed in both the outer leaf wall 1 and the inner leaf wall 2, distributed within the reinforcement structure 5 near the opening 4. Two layers of additional reinforcement bars 6 are arranged on the sides of the opening 4, one near each edge of the reinforcement structure 5. The additional reinforcement bars 6 near the opening 4 are integrally connected to the surrounding wall, distributing force evenly and effectively preventing cracks around the opening 4 in the outer and inner leaf walls 1 and 2.

[0028] Multiple sets of additional crack-resistant steel bars 7 are installed in both the outer and inner walls 1 and 2, fixed at an angle to the steel structure 5 at the four corners of the opening 4. Two layers of additional crack-resistant steel bars 7 are installed at the four corners of the steel structure 5, one on each side of the steel structure 5. These additional crack-resistant steel bars 7 reinforce the walls at the four corners of the opening 4, protecting the openings 4 of the outer and inner walls 1 and 2 from cracks.

[0029] like Figure 2 and Figure 5 As shown, an inner leaf wall reinforcement assembly 8 is fixed within the steel structure 5 surrounding the opening 4 of the inner leaf wall 2. The inner leaf wall reinforcement assembly 8 includes an inner transverse reinforcement channel 81, an outer transverse reinforcement channel 82, an inner longitudinal reinforcement channel 83, and an outer longitudinal reinforcement channel 84. The inner transverse reinforcement channel 81, the outer transverse reinforcement channel 82, the inner longitudinal reinforcement channel 83, and the outer longitudinal reinforcement channel 84 are abutted and connected together. The inner leaf wall reinforcement assembly 8 increases the strength and rigidity of the wall surrounding the opening 4 of the inner leaf wall 2. Even when subjected to external forces, it is less likely to damage the opening 4 in the middle of the wall, which has relatively high strength and rigidity.

[0030] like Figure 6As shown, two sets of inner transverse reinforcing channel steels 81 and two sets of inner longitudinal reinforcing channel steels 83 are fixedly connected to form a rectangular frame. The two ends of the two sets of inner longitudinal reinforcing channel steels 83 abut against the outer transverse reinforcing channel steels 82 outside the two sets of inner transverse reinforcing channel steels 81, and the two ends of the two sets of outer transverse reinforcing channel steels 82 abut against the outer longitudinal reinforcing channel steels 84. This double-layer channel steel structure further enhances the stability of the inner leaf wall reinforcement assembly 8, providing greater strength and rigidity to the inner leaf wall 2 and protecting the opening 4.

[0031] like Figure 7 As shown, the inner leaf wall reinforcement assembly 8 further includes support steel plates 85, which are equidistantly distributed and fixed between the inner transverse reinforcement channel steel 81 and the outer transverse reinforcement channel steel 82, and between the inner longitudinal reinforcement channel steel 83 and the outer longitudinal reinforcement channel steel 84. By supporting the support steel plates 85 between the inner transverse reinforcement channel steel 81 and the outer transverse reinforcement channel steel 82, and between the inner longitudinal reinforcement channel steel 83 and the outer longitudinal reinforcement channel steel 84, the stability of the inner leaf wall reinforcement assembly 8 can be further increased.

[0032] like Figure 8 As shown, the inner leaf wall reinforcement assembly 8 also includes a concave-convex steel plate 86, which is distributed around the opening 4 and screwed to the inside of the rectangular frame of the inner transverse reinforcement channel 81 and the inner longitudinal reinforcement channel 83. The shape of the concave-convex steel plate 86 increases the contact area with the inner leaf wall 2, providing better support. The high hardness of the concave-convex steel plate 86 also increases the strength of the wall. Furthermore, the concave-convex steel plate 86, which is continuously fixed around the opening 4, forms a whole, ensuring uniform stress distribution around the wall, thus preventing cracking around the opening 4.

[0033] This structure strengthens the weakest part of the opening 4 by means of additional reinforcing steel bars 6, additional anti-cracking steel bars 7 and inner leaf wall reinforcement components 8. It is suitable for situations where the opening is large, especially when the opening width is not less than half the width of the exterior wall hanging panel. It can enhance the rigidity and strength of the precast concrete exterior wall hanging panel with the opening, and can effectively avoid the occurrence of cracks in the corners of the opening.

[0034] The above are only embodiments of the present invention, and common knowledge such as the specific structures and characteristics of the scheme are not described in detail here. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes that fall within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any figure mark in the claims should not be regarded as limiting the claim involved.

Claims

1. A reinforcement structure for a large opening of a prefabricated exterior wall panel, comprising an outer leaf wall (1), an inner leaf wall (2), an insulation board (3) and an opening (4), wherein the insulation board (3) is located between the outer leaf wall (1) and the inner leaf wall (2), and an opening (4) is provided between the outer leaf wall (1), the inner leaf wall (2) and the insulation board (3), and characterized in that: The invention also includes additional reinforcement steel bars (6) for the opening, additional anti-cracking steel bars (7) for the opening, and an inner leaf wall reinforcement assembly (8). The outer leaf wall (1) and the inner leaf wall (2) are both provided with a steel bar structure (5). The additional reinforcement steel bars (6) for the opening are provided in multiple groups in the outer leaf wall (1) and the inner leaf wall (2), and are respectively distributed in the steel bar structure (5) at positions close to the opening (4). The additional anti-cracking steel bars (7) for the opening are provided in multiple groups in the outer leaf wall (1) and the inner leaf wall (2), and are respectively fixed at an angle to the opening ( 4) On the steel structure (5) at the four corners, an inner leaf wall reinforcement assembly (8) is fixed inside the steel structure (5) around the inner leaf wall (2) opening (4), and the inner leaf wall reinforcement assembly (8) includes an inner transverse reinforcement channel steel (81), an outer transverse reinforcement channel steel (82), an inner longitudinal reinforcement channel steel (83) and an outer longitudinal reinforcement channel steel (84), and the inner transverse reinforcement channel steel (81), the outer transverse reinforcement channel steel (82), the inner longitudinal reinforcement channel steel (83) and the outer longitudinal reinforcement channel steel (84) are mutually abutted and connected.

2. The reinforcement structure for a large opening of a prefabricated exterior wall panel according to claim 1, characterized in that: The two groups of inner transverse reinforcing channel steels (81) and the two groups of inner longitudinal reinforcing channel steels (83) are fixedly connected to form a rectangular frame. The two ends of the two groups of inner longitudinal reinforcing channel steels (83) are respectively abutted against the outer transverse reinforcing channel steels (82) outside the two groups of inner transverse reinforcing channel steels (81), and the two ends of the two groups of outer transverse reinforcing channel steels (82) are abutted against the outer longitudinal reinforcing channel steels (84).

3. The reinforcement structure for a large opening of a prefabricated exterior wall panel according to claim 2, characterized in that: The inner leaf wall reinforcement assembly (8) further includes support steel plates (85), which are equidistantly distributed and fixed between the inner transverse reinforcement channel steel (81) and the outer transverse reinforcement channel steel (82) and between the inner longitudinal reinforcement channel steel (83) and the outer longitudinal reinforcement channel steel (84).

4. The reinforcement structure for a large opening of a prefabricated exterior wall panel according to claim 2, characterized in that: The inner leaf wall reinforcement assembly (8) further includes a concave-convex steel plate (86), which is distributed around the opening (4) and is screwed to the inner side of the rectangular frame of the inner transverse reinforcement channel steel (81) and the inner longitudinal reinforcement channel steel (83).

5. The reinforcement structure for a large opening of a prefabricated exterior wall panel according to claim 1, characterized in that: The additional reinforcing steel bars (6) distributed on the sides of the opening (4) are provided in two layers, respectively close to the two edges of the steel bar structure (5).

6. The reinforcement structure for a large opening of a prefabricated exterior wall panel according to claim 1, characterized in that: The additional crack-resistant steel bars (7) fixed at the four corners of the opening (4) of the steel structure (5) are provided with two layers, which are respectively fixed on the outer sides of the two sides of the steel structure (5).

7. The reinforcement structure for a large opening of a prefabricated exterior wall panel according to claim 1, characterized in that: The insulation board (3) has a concave structure around the hole (4) on one side close to the inner leaf wall (2), and the thickness of the concave structure portion of the insulation board (3) is smaller than the thickness at other locations.

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