Prestressed concrete composite exterior wall panel

Abstract

The utility model discloses a prestressed concrete composite exterior wall panel, characterized in that: it comprises a prestressed concrete base plate (1) and a decorative thermal insulation composite plate (2) prefabricated from a plurality of longitudinal prestressed steel bars (5-2) and concrete; the prestressed concrete base plate (1) is provided with a groove (1-1) on a side facing the decorative thermal insulation composite plate (2), and the two ends of the prestressed concrete base plate (1) are respectively provided with two end protrusions (1-2); the decorative thermal insulation composite plate (2) comprises an inner thermal insulation layer (2-1) and an outer decorative layer (2-2); the two end protrusions (1-2) of the prestressed concrete base plate (1) are fixed to the decorative thermal insulation composite plate (2) by a first connecting assembly (3). The utility model can solve the problem that the existing composite exterior wall panels with thermal insulation layers have very large deadweight and high cost.

Description

Technical Field

[0001] The utility model relates to a prestressed concrete composite exterior wall panel. Background Art

[0002] The existing composite exterior wall panels on the market are mainly composed of reinforced concrete inner leaf layer, reinforced concrete outer leaf layer and the middle insulation layer through the tension joint. Since no prestress is applied to the reinforced concrete layer, the concrete layer is thicker and contains two layers of concrete surface layers, the inner and outer leaves. Therefore, the existing composite exterior wall panels with insulation layer have a very large self-weight and high cost, and are not suitable for non-load-bearing exterior walls of buildings. Utility Model Content

[0003] The utility model provides a prestressed concrete composite exterior wall panel, which solves the technical problems of the existing composite exterior wall panels with thermal insulation layers having very large deadweight and high cost.

[0004] In order to achieve the above-mentioned purpose, the scheme of the utility model is: a prestressed concrete composite exterior wall panel, characterized in that it includes a prestressed concrete base plate and a decorative thermal insulation composite plate prefabricated from a plurality of longitudinal prestressed steel bars and concrete; the prestressed concrete base plate is provided with a groove on a side facing the decorative thermal insulation composite plate and the two ends of the prestressed concrete base plate are respectively provided with two end protrusions; the decorative thermal insulation composite plate includes an inner thermal insulation layer and an outer decorative layer; the two end protrusions of the prestressed concrete base plate are fixed to the decorative thermal insulation composite plate by a first connecting component.

[0005] By adopting the above technical scheme, the prestressed concrete floor is prefabricated with longitudinal prestressed steel bars (i.e., prestressed steel bars are used and arranged longitudinally) and concrete, so the prestressed concrete floor can be prefabricated in a factory through a production line or a mold, and has the advantages of fast production speed and low cost. After pre-production, it can be cut and processed according to the required length, and the customized processing cycle is short and the customized size is very flexible. In addition, since the longitudinal prestressed steel bars are applied and the concrete floor is designed into a concave-convex structure (two end convex parts and several grooves), weight is reduced and materials are saved, and the strength and rigidity of the structure are increased by introducing longitudinal prestressed steel bars into the concrete. Under the condition of meeting the force requirements, the self-weight of the concrete floor can be effectively reduced, so that the prestressed concrete floor only needs to meet the minimum thickness of the fire protection requirements to have good tensile and crack resistance at the same time, which is very suitable for the non-load-bearing external hanging form of the building. Therefore, the technical problem that the existing composite exterior wall panels with insulation layers have very large self-weight and high cost is solved. The decorative insulation composite panel includes an inner insulation layer and an outer decorative layer, and has a composite effect of insulation and decoration. The decorative thermal insulation composite panel can be customized in size according to the needs and prefabricated on the production line accordingly, and then the two end protrusions of the prestressed concrete bottom plate and the decorative thermal insulation composite panel are assembled and fixed through the first connecting component, which can meet the requirements of prefabricated buildings. The decorative thermal insulation composite panel and the prestressed concrete bottom plate can standardize the production components, reduce material waste and construction waste, shorten the construction period, and reduce production costs.

[0006] Furthermore, the prestressed concrete base plate is provided with a plurality of grooves distributed at intervals on a side facing the decorative thermal insulation composite panel and a convex portion is formed between two adjacent grooves; the convex portion of the prestressed concrete base plate is fixed to the decorative thermal insulation composite panel by a second connecting component.

[0007] Furthermore, the prestressed concrete base plate also includes a plurality of transverse steel bars.

[0008] Furthermore, two ends of the transverse steel bar are bent vertically toward the decorative thermal insulation composite panel to form two folded sections respectively.

[0009] Furthermore, the first connecting component includes a first embedded bolt and an angle code; an extension section is provided on the decorative thermal insulation composite board in the direction toward the prestressed concrete base plate; the first embedded bolt is prefabricated and fixed on the prestressed concrete base plate; the threaded rod of the first embedded bolt passes through one end of the angle code and is fixed with a first nut; the other end of the angle code is fixedly connected to the extension section by a self-tapping screw.

[0010] Furthermore, the second connecting assembly includes a second embedded bolt, a U-shaped plate, an L-shaped plate and a screw; the second embedded bolt is prefabricated and fixed on the prestressed concrete base plate; the threaded rod of the second embedded bolt passes through the bottom edge of the U-shaped plate and is fixed with the second nut; the threaded rod of the screw passes through the two side edges of the U-shaped plate and is fixed with the third nut; one end of the L-shaped plate is fixed on the decorative thermal insulation composite board; the other end of the L-shaped plate is provided with a slot and the slot is clamped with the middle part of the threaded rod of the screw.

[0011] Furthermore, a heat-insulating sleeve is coated on the middle portion of the threaded rod of the screw, and the heat-insulating sleeve is engaged with the slot.

[0012] Furthermore, the edge gap between the prestressed concrete bottom plate and the decorative thermal insulation composite panel is filled and sealed with a sealant.

[0013] Furthermore, each of the longitudinal prestressed steel bars is distributed at positions corresponding to the middle convex portion and the end convex portion on the prestressed concrete bottom plate.

[0014] Furthermore, the outer decorative layer is made of a honeycomb aluminum plate.

[0015] Beneficial effects of the utility model:

[0016] First, the prestressed concrete floor of the utility model is prefabricated with longitudinal prestressed steel bars and concrete, so the prestressed concrete floor can be prefabricated in a factory through a production line or a mold, which has the advantages of fast production speed and low cost. After pre-production, it can be cut and processed according to the required length, with a short customization cycle and very flexible customization size;

[0017] Second, the utility model applies longitudinal prestressed steel bars and designs the concrete base plate into a concave-convex structure, which reduces weight and saves materials. By introducing longitudinal prestressed steel bars into concrete, the strength and rigidity of the structure are increased. Under the condition of meeting the force requirements, the weight of the concrete base plate can be effectively reduced, so that the prestressed concrete base plate only needs to meet the minimum thickness required for fire protection to have good tensile and crack resistance, which is very suitable for non-load-bearing external hanging forms of buildings. Therefore, the technical problem that the existing composite exterior wall panels with insulation layers have very large self-weight and high cost is solved;

[0018] Third, the utility model includes an inner insulation layer and an outer decorative layer as the decorative insulation composite panel. The decorative insulation composite panel has a composite effect of insulation and decoration; and the thickness and density of the insulation layer can be customized and adjusted according to energy-saving requirements to meet the energy-saving requirements of buildings in various places. The decorative insulation composite panel can be customized in size as needed and prefabricated on the production line. Then, the two end protrusions of the prestressed concrete base plate and the decorative insulation composite panel are assembled and fixed through a first connecting component to meet the requirements of prefabricated buildings. The decorative insulation composite panel and the prestressed concrete base plate can standardize the production components, reduce material waste and construction waste, shorten the construction period, and reduce production costs.

[0019] Fourth, the utility model has the advantages of reliable connection and convenient operation because the first connecting component meets the requirements of assemblability and processability during production or assembly; at the same time, the second connecting component 4 can also meet the requirements of assemblability and processability during production or assembly, and has the advantages of reliable connection and convenient operation;

[0020] Fifth, in the utility model, since the middle part of the threaded rod of the bolt is covered with an insulating sleeve and the insulating sleeve is clamped with the slot, the insulating sleeve has a heat-insulating effect and can effectively act as a thermal break bridge to avoid direct heat transfer between the prestressed concrete base plate and the decorative thermal insulation composite panel. Extending the prestressed concrete wall panel structure is a common architectural design, which increases the strength and rigidity of the structure by introducing longitudinal prestressed steel bars into the concrete. In addition, the prestressed concrete wall panels can also effectively insulate heat and sound. During the tensioning process of the longitudinal prestressed steel bars, appropriate pressure can be applied to cause the wall panels to generate compressive stress under stress, thereby improving their bearing capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The utility model is a structural schematic diagram of a prestressed concrete composite exterior wall panel.

[0022] Figure 2 yes Figure 1 Enlarged view of point A in the middle.

[0023] Figure 3 yes Figure 1 Enlarged view of point B in the middle.

[0024] Figure 4 yes Figure 3 Cross-sectional view of CC.

[0025] Figure 5 It is a diagram of the connection and matching status between the U-shaped plate, the L-shaped plate and the screws in the second connection component. DETAILED DESCRIPTION

[0026] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0027] Example 1: See Figure 1-5 A prestressed concrete composite exterior wall panel comprises a prestressed concrete base plate 1 and a decorative thermal insulation composite panel 2 which are prefabricated from a plurality of longitudinal prestressed steel bars 5-2 and concrete.

[0028] A groove 1 - 1 is provided on the prestressed concrete bottom plate 1 on a side facing the decorative thermal insulation composite board 2 , and two ends of the prestressed concrete bottom plate 1 are respectively provided with two end protrusions 1 - 2 .

[0029] Specifically, the longitudinal prestressed steel bars 5 - 2 are prestressed steel bars and are arranged longitudinally.

[0030] Since the prestressed concrete floor 1 is prefabricated with the longitudinal prestressed steel bars 5-2 and concrete, the prestressed concrete floor can be prefabricated in a factory through a production line or a mold, which has the advantages of fast production speed and low cost. After pre-production, it can be cut and processed according to the required length, with a short customization cycle and very flexible customization size.

[0031] In addition, due to the application of longitudinal prestressed steel bars 5-2, and the design of the concrete bottom plate into a concave-convex form (two end convex parts 1-2 and a plurality of grooves 1-1), the longitudinal prestressed steel bars 5-2 are introduced into the concrete, which increases the strength and rigidity of the structure, and can effectively reduce the weight of the concrete bottom plate under the condition of meeting the force requirements, so that the prestressed concrete bottom plate only needs to meet the minimum thickness of the fire protection requirements to have good tensile and crack resistance, which is very suitable for non-load-bearing external hanging forms of buildings. Therefore, the existing technical problems of very large dead weight and high cost are solved.

[0032] The decorative thermal insulation composite board 2 comprises an inner thermal insulation layer 2-1 and an outer decorative layer 2-2. The decorative thermal insulation composite board 2 has a composite effect of thermal insulation and decoration.

[0033] Furthermore, the outer decorative layer 2-2 can be made of honeycomb aluminum plate or stone, calcium silicate plate or other metal panels, and the inner insulation layer 2-1 can be customized according to the size required and prefabricated on the production line. The outer decorative layer 2-2 can be used in a variety of decorative effects, such as metal surface effect, stone finishing effect, paint effect, real stone paint effect, etc., which is suitable for various types of architectural color selection design. The thickness and density of the insulation layer 2-1 can be customized according to the energy-saving requirements to meet the energy-saving requirements of buildings in various places. The decorative insulation composite panel can be customized according to the size required and prefabricated on the production line, and then the two end protrusions of the prestressed concrete bottom plate and the decorative insulation composite panel are assembled and fixed by the first connecting component, which can meet the requirements of prefabricated buildings. The decorative insulation composite panel and the prestressed concrete bottom plate can standardize the production components, reduce material waste and construction waste, shorten the construction period, and reduce production costs.

[0034] Specifically, the inner insulation layer 2-1 adopts existing known or conventional insulation materials.

[0035] The two end protrusions 1-2 of the prestressed concrete bottom plate 1 are fixed to the decorative thermal insulation composite panel 2 by a first connection assembly 3. The prestressed concrete bottom plate 1 and the decorative thermal insulation composite panel 2 can be assembled and connected. The prestressed concrete bottom plate 1 and the decorative thermal insulation composite panel 2 can be assembled according to size requirements after being prefabricated, which is very flexible to use and can reduce production costs.

[0036] Furthermore, the prestressed concrete base plate 1 is provided with a plurality of grooves 1-1 distributed at intervals on the side facing the decorative thermal insulation composite panel 2, and a central convex portion 1-3 is formed between two adjacent grooves 1-1; the central convex portion 1-3 of the prestressed concrete base plate 1 is fixed to the decorative thermal insulation composite panel 2 via a second connecting component 4. By forming a central convex portion 1-3 between two adjacent grooves 1-1, the middle part of the prestressed concrete base plate 1 can be strengthened, and at the same time, the prestressed concrete base plate 1 is also fixedly connected to the decorative thermal insulation composite panel 2 via the central convex portion 1-3 via the second connecting component 4, which can improve the connection strength of the middle part, prevent loosening, and improve the safety level. The groove 1-1 can be filled with functional materials or built-in functional panels (such as sound insulation panels, fireproof panels, etc., to improve sound insulation, fire prevention, etc.) as needed.

[0037] Further, see Figure 2The first connection component 3 includes a first embedded bolt 3-1 and an angle code 3-2; the decorative thermal insulation composite board 2 is provided with an extension section 2-21 in the direction toward the prestressed concrete bottom plate 1; the first embedded bolt 3-1 is prefabricated and fixed on the prestressed concrete bottom plate 1; the threaded rod of the first embedded bolt 3-1 passes through one end of the angle code 3-2 and is fixed with the first nut 3-3; the other end of the angle code 3-2 is fixedly connected to the extension section 2-21 by a self-tapping screw 3-4. The first connection component 3 meets the requirements of assemblability and processability during assembly, and has the advantages of reliable connection and convenient operation.

[0038] Further, see Figure 3-5 The second connection assembly 4 includes a second embedded bolt 4-1, a U-shaped plate 4-2, an L-shaped plate 4-3 and a screw 4-4; the second embedded bolt 4-1 is prefabricated and fixed on the prestressed concrete bottom plate 1; the threaded rod of the second embedded bolt 4-1 passes through the bottom edge of the U-shaped plate 4-1 and is fixed with the second nut 4-5; the threaded rod of the screw 4-4 passes through the two side edges of the U-shaped plate 4-2 and is fixed with the third nut 4-6; one end of the L-shaped plate 4-3 is fixed on the decorative thermal insulation composite board 2; the other end of the L-shaped plate 4-3 is provided with a clamping groove 4-31; the other end of the L-shaped plate 4-3 is located between the two side edges of the U-shaped plate 4-2 and its clamping groove 4-31 is clamped with the middle part of the threaded rod of the screw 4-4. The second connection assembly 4 can meet the requirements of assemblability and processability during production or assembly, and at the same time has the advantages of reliable connection and convenient operation.

[0039] In this embodiment, one end of the L-shaped plate 4 - 3 is fixedly connected to the outer decorative layer 2 - 2 of the decorative thermal insulation composite panel 2 .

[0040] Further, see Figure 3-5 The middle part of the threaded rod of the screw 4-4 is covered with an insulating sleeve 4-7, and the insulating sleeve 4-7 is engaged with the slot 4-31. The insulating sleeve 4-7 has a heat-insulating effect and can effectively act as a broken bridge to avoid direct heat transfer between the prestressed concrete base plate 1 and the decorative thermal insulation composite panel 2. Extending the prestressed concrete wall panel structure is a common architectural design, which increases the strength and rigidity of the structure by introducing longitudinal prestressed steel bars 5-2 into the concrete. In addition, the prestressed concrete wall panels can also effectively insulate heat and sound. During the tensioning process of the longitudinal prestressed steel bars 5-2, appropriate pressure can be applied to cause the wall panels to generate compressive stress under stress, thereby improving their bearing capacity.

[0041] Specifically, the thermal insulation sleeve 4-7 is located between the two side edges of the U-shaped plate 4-2.

[0042] Further, see Figure 1-2The edge gap between the prestressed concrete bottom plate 1 and the decorative thermal insulation composite plate 2 is filled and sealed with a sealant 6. This can prevent rainwater from entering the interior, reduce or avoid rusting of the first connecting component 4 and the second connecting component 4, and thus extend the service life.

[0043] Preferably, the sealant 6 is made of silicone weather-resistant sealant.

[0044] Further, see Figure 1 Each of the longitudinal prestressed steel bars 5-2 is distributed at the corresponding positions of the middle convex part 1-3 and the end convex part 1-2 on the prestressed concrete bottom plate 1. Since each of the longitudinal prestressed steel bars 5-2 is located at the thicker part of the concrete convex part and the concrete layer is thin in other areas, the weight of the concrete bottom plate can be most effectively reduced while meeting the force requirements, while improving and optimizing the overall strength.

[0045] In this embodiment, specifically, see Figure 1 The prestressed concrete base plate 1 is provided with three grooves 1-1 distributed at intervals on the side facing the decorative thermal insulation composite panel 2, so the prestressed concrete base plate 1 has two middle convex parts 1-3 and two end convex parts 1-2, and the longitudinal prestressed steel bars 5-2 have four and are respectively arranged at the two middle convex parts 1-3 and the two end convex parts 1-2.

[0046] In other embodiments, the number of the grooves 1 - 1 may be other than three.

[0047] Embodiment 2: This embodiment is further improved on the basis of embodiment 1:

[0048] See also Figure 1-3 In this embodiment, the prestressed concrete floor plate further comprises a plurality of transverse steel bars 5-1. The prestressed concrete floor plate 1 is prefabricated with a plurality of longitudinal prestressed steel bars 5-2, a plurality of transverse steel bars 5- and concrete.

[0049] Specifically, the transverse reinforcement 5-1 is arranged transversely, and the transverse reinforcement 5-1 can be prestressed reinforcement or ordinary reinforcement; the longitudinal prestressed reinforcement 5-2 is arranged longitudinally, and must be prestressed reinforcement.

[0050] Among them, each of the longitudinal prestressed steel bars 5-2 on the prestressed concrete bottom plate 1 is distributed in a transverse interval and each of the transverse steel bars 5-1 is distributed in a longitudinal interval. During production, each transverse steel bar 5-1 and each of the longitudinal prestressed steel bars 5-2 distributed in a dry interval can be overlapped, tied or welded at the intersection; then the prestressed concrete bottom plate is prefabricated with each transverse steel bar 5-1, each longitudinal prestressed steel bar 5-2 and concrete. In this way, combined reinforcement in the transverse and longitudinal directions can be achieved, and the overall strength and rigidity can be improved.

[0051] Furthermore, the two ends of the transverse reinforcement 5-1 are bent vertically toward the decorative thermal insulation composite board 2 to form two folded sections 5-11. The two folded sections 5-11 of the transverse reinforcement 5-1 are used to further reinforce the two end protrusions 1-2 in the thickness direction, which can effectively improve the strength and rigidity of the connection.

[0052] The preferred specific embodiments of the utility model are described in detail above. It should be understood that ordinary technicians in this field can make many modifications and changes based on the concept of the utility model without creative work. Therefore, all technical solutions that can be obtained by technicians in this technical field based on the concept of the utility model through logical analysis, reasoning or limited experiments on the basis of the existing technology should be within the scope of protection determined by the claims.

Claims

1. A prestressed concrete composite exterior wall panel, characterized in that: It comprises a prestressed concrete base plate (1) and a decorative thermal insulation composite plate (2) which are prefabricated from a plurality of longitudinal prestressed steel bars (5-2) and concrete; The prestressed concrete bottom plate (1) is provided with a groove (1-1) on a side facing the decorative thermal insulation composite plate (2), and the two ends of the prestressed concrete bottom plate (1) are respectively provided with two end protrusions (1-2); The decorative thermal insulation composite panel (2) comprises an inner thermal insulation layer (2-1) and an outer decorative layer (2-2); The two end protrusions (1-2) of the prestressed concrete bottom plate (1) and the decorative thermal insulation composite plate (2) are fixed via a first connection assembly (3).

2. A prestressed concrete composite exterior wall panel as claimed in claim 1, characterized in that: The prestressed concrete base plate (1) is provided with a plurality of grooves (1-1) distributed at intervals on a side facing the decorative thermal insulation composite plate (2), and a central convex portion (1-3) is formed between two adjacent grooves (1-1); the central convex portion (1-3) of the prestressed concrete base plate (1) and the decorative thermal insulation composite plate (2) are fixed via a second connecting component (4).

3. A prestressed concrete composite exterior wall panel as claimed in claim 1 or 2, characterized in that: The prestressed concrete base plate (1) also includes a plurality of transverse steel bars (5-1).

4. A prestressed concrete composite exterior wall panel as claimed in claim 3, characterized in that: Both ends of the transverse steel bar (5-1) are bent vertically toward the decorative thermal insulation composite board (2) to form two folded sections (5-11).

5. The prestressed concrete composite exterior wall panel according to claim 1, characterized in that: The first connection assembly (3) comprises a first embedded bolt (3-1) and an angle bracket (3-2); an extension section (2-21) is provided on the decorative thermal insulation composite panel (2) in a direction toward the prestressed concrete base plate (1); the first embedded bolt (3-1) is prefabricated and fixed on the prestressed concrete base plate (1); the threaded rod of the first embedded bolt (3-1) passes through one end of the angle bracket (3-2) and is fixed with a first nut (3-3); the other end of the angle bracket (3-2) is fixedly connected to the extension section (2-21) by a self-tapping screw (3-4).

6. The prestressed concrete composite exterior wall panel according to claim 2, characterized in that: The second connection assembly (4) comprises a second embedded bolt (4-1), a U-shaped plate (4-2), an L-shaped plate (4-3) and a screw (4-4); the second embedded bolt (4-1) is prefabricated and fixed on the prestressed concrete base plate (1); the threaded rod of the second embedded bolt (4-1) passes through the bottom edge of the U-shaped plate (4-2) and is fixed with a second nut (4-5); the threaded rod of the screw (4-4) passes through two side edges of the U-shaped plate (4-2) and is fixed with a third nut (4-6); one end of the L-shaped plate (4-3) is fixed on the decorative thermal insulation composite board (2); the other end of the L-shaped plate (4-3) is provided with a clamping groove (4-31), and the clamping groove (4-31) is clamped with the middle part of the threaded rod of the screw (4-4).

7. A prestressed concrete composite exterior wall panel as claimed in claim 6, characterized in that: The middle part of the threaded rod of the screw (4-4) is covered with a heat insulating sleeve (4-7), and the heat insulating sleeve (4-7) is clamped with the clamping groove (4-31).

8. The prestressed concrete composite exterior wall panel according to claim 1, characterized in that: The edge gap between the prestressed concrete bottom plate (1) and the decorative thermal insulation composite plate (2) is filled and sealed with a sealant (6).

9. The prestressed concrete composite exterior wall panel according to claim 2, characterized in that: Each of the longitudinal prestressed steel bars (5-2) is distributed at corresponding positions of the middle convex portion (1-3) and the end convex portion (1-2) on the prestressed concrete bottom plate (1).

10. A prestressed concrete composite exterior wall panel as claimed in claim 1 or 2, characterized in that: The outer decorative layer (2-2) is made of a honeycomb aluminum plate.

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