Composite external wall panel

Abstract

The utility model discloses a composite external wall panel, which relates to the technical field of building prefabricated parts, and realizes mechanical locking by forming a conical hole in a polystyrene board layer and filling UHPC (Ultra High Performance Concrete) into a concrete anchor bolt column. A wave-shaped metal lining plate with through holes is embedded in the foam cement layer and forms a mutual buckling structure with the base layer; and glass fiber gridding cloth with embedded columns is arranged between the decorative layer and the UHPC layer. The structure obviously improves the interlayer binding force and the durability of the decorative layer, and is suitable for the outer wall of the high-rise fabricated building.

Description

Technical Field

[0001] This utility model relates to the field of prefabricated building components, and more specifically to a composite exterior wall panel. Background Technology

[0002] Traditional composite exterior wall panels are held together by adhesives for their functional layers, making them prone to delamination and detachment due to thermal expansion and contraction or vibration. Existing technologies attempt to add steel mesh, but the steel bars are not effectively anchored to the insulation layer, and the decorative layer is still prone to cracking.

[0003] Therefore, it is necessary to propose a composite exterior wall panel to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to solve the problem of easy cracking of the decorative layer.

[0005] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0006] A composite exterior wall panel includes a decorative sand layer, a UHPC layer, a polystyrene board layer and a foamed cement layer stacked sequentially from the outside to the inside. The surface of the polystyrene board layer facing the UHPC layer is provided with an array of conical holes, and the UHPC layer fills the holes to form concrete anchor columns that penetrate the polystyrene board layer.

[0007] The foamed cement layer is embedded with a corrugated metal backing plate, the crests and troughs of which connect the interfaces of the polystyrene board layer and the foamed cement layer, respectively.

[0008] Furthermore, longitudinal reinforcing bars are pre-embedded in the concrete anchor bolt column, with the top of the longitudinal reinforcing bars extending to the bottom of the decorative sand layer and the bottom end passing through the polystyrene board layer and fixed to the crest of the corrugated metal liner.

[0009] Furthermore, a glass fiber mesh reinforcement layer is provided between the decorative sand layer and the UHPC layer. The mesh nodes of the glass fiber mesh reinforcement layer are provided with upwardly protruding embedded posts that are embedded inside the decorative sand layer.

[0010] Furthermore, through holes are opened at the troughs of the corrugated metal liner, and the slurry of the foamed cement layer penetrates the through holes to form a locking structure.

[0011] Furthermore, it also includes an outer frame fixed to the outside of the decorative sand layer, UHPC layer, polystyrene board layer and foamed cement layer, the outer frame being composed of a stainless steel part and a galvanized steel part.

[0012] Furthermore, an insulating partition layer is provided between the stainless steel part and the galvanized steel part.

[0013] Furthermore, the insulating barrier layer is a polytetrafluoroethylene layer or an engineering plastic layer with a thickness of 0.3-1 mm.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. This utility model achieves an interlayer shear strength of 2.5MPa through the inverted wedge structure of the anchor bolt column, and the mesh fabric embedded in the column can effectively reduce the risk of cracking of the decorative layer.

[0016] 2. This utility model, through the setting of the corrugated liner, can effectively extend the heat conduction path and reduce the thermal conductivity. Attached Figure Description

[0017] Figure 1 This is a cross-sectional view of the structure of this utility model.

[0018] Reference numerals: 2. Galvanized steel section; 3. Stainless steel section; 4. Decorative sand layer; 5. UHPC layer; 6. Polystyrene board layer; 7. Foamed cement layer; 18. Corrugated metal lining plate; 19. Longitudinal reinforcing rib; 20. Fiberglass mesh reinforcement layer; 21. Embedded column; 22. Through hole; 23. Insulating partition layer. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1 A composite exterior wall panel includes, from the outside to the inside, a decorative sand layer 4, a UHPC layer 5, a polystyrene board layer 6, and a foamed cement layer 7. The surface of the polystyrene board layer 6 facing the UHPC layer 5 is provided with an array of conical holes 16. Conical holes 16 with a larger diameter at the top and a smaller diameter at the bottom are drilled on the surface of the polystyrene board layer 6, with a top diameter of Φ20mm, a bottom diameter of Φ10mm, and a depth of 30mm. The UHPC layer 5 fills the holes to form concrete anchor bolt columns 17 that penetrate the polystyrene board layer 6.

[0021] A corrugated metal backing plate 18 is embedded in the foamed cement layer 7. The corrugated metal backing plate 18 has a wave height of 15mm and a wavelength of 100mm. It is placed between the polystyrene board layer 6 and the foamed cement layer 7, so that the crests and troughs of the metal backing plate 18 connect the interfaces of the polystyrene board layer 6 and the foamed cement layer 7, respectively.

[0022] Specifically, longitudinal reinforcing bars 19 are pre-embedded in the concrete anchor bolt column 17. When pouring UHPC, grout is poured into the holes and solidifies to form the anchor bolt column 17. φ5mm threaded steel bars are pre-embedded in the column as longitudinal reinforcing bars 19. The top of the longitudinal reinforcing bar 19 extends to the bottom of the decorative sand layer 4, and the bottom end passes through the polystyrene board layer 6 and is fixed to the crest of the corrugated metal liner 18. The bottom end of the longitudinal reinforcing bar 19 is welded to the crest of the corrugated metal liner 18, and φ8mm through holes 22 are punched at the trough.

[0023] Specifically, a fiberglass mesh reinforcement layer 20 is provided between the decorative sand layer 4 and the UHPC layer 5. The fiberglass mesh reinforcement layer 20 has upwardly protruding embedded posts 21 at the mesh nodes. When the UHPC layer 5 is not cured, the fiberglass mesh with embedded posts 21 is pressed in. The embedded posts are 3mm high and spaced 50mm×50mm apart. Decorative mortar is applied to cover the mesh, and the embedded posts 21 are wrapped inside the decorative sand layer 4 and embedded in the interior of the decorative sand layer 4.

[0024] Specifically, through holes 22 are opened at the troughs of the corrugated metal liner 18, and the slurry of the foamed cement layer 7 penetrates through the through holes 22 to form an interlocking structure. The shape of the molded foamed cement layer 7 is as follows: Figure 1 As shown, the cement filling layer below the crest is a naturally filled auxiliary bonding area with a thickness of ≤3mm, and is isolated by the crest of the metal liner, thus not forming a continuous thermal bridge.

[0025] Specifically, it also includes an outer frame 1 fixed to the outside of the decorative sand layer 4, UHPC layer 5, polystyrene board layer 6 and foamed cement layer 7. The outer frame 1 is composed of a stainless steel part 3 and a galvanized steel part 2.

[0026] Specifically, an insulating barrier layer 23 is provided between the stainless steel part 3 and the galvanized steel part 2. The insulating barrier layer 23 is a polytetrafluoroethylene layer or an engineering plastic layer with a thickness of 0.3-1mm. In implementation, a 0.5mm thick polytetrafluoroethylene film is used and embedded between the stainless steel part 3 and the galvanized steel part 2 by hot pressing to completely block the galvanic corrosion path between the stainless steel part 3 and the galvanized steel part 2.

[0027] The above are merely preferred embodiments of this utility model and are not intended to limit this utility model. The scope of patent protection of this utility model shall be determined by the claims. Similarly, any equivalent structural changes made based on the description and drawings of this utility model shall also be included within the scope of protection of this utility model.

Claims

1. A composite exterior wall panel, comprising, from the outside to the inside, a decorative sand layer, a UHPC layer, a polystyrene board layer, and a foamed cement layer, characterized in that: The surface of the polystyrene board layer facing the UHPC layer is provided with an array of conical holes, and the UHPC layer fills the holes to form concrete anchor bolts that penetrate the polystyrene board layer. The foamed cement layer is embedded with a corrugated metal backing plate, the crests and troughs of which connect the interfaces of the polystyrene board layer and the foamed cement layer, respectively.

2. The composite exterior wall panel according to claim 1, characterized in that: The concrete anchor bolt column has pre-embedded longitudinal reinforcing bars. The top of the longitudinal reinforcing bars extends to the bottom of the decorative sand layer, and the bottom ends pass through the polystyrene board layer and are fixed to the crest of the corrugated metal liner.

3. The composite exterior wall panel according to claim 1, characterized in that: A glass fiber mesh reinforcement layer is provided between the decorative sand layer and the UHPC layer. The mesh nodes of the glass fiber mesh reinforcement layer are provided with upward-protruding embedded posts that are embedded inside the decorative sand layer.

4. A composite exterior wall panel according to claim 1, characterized in that: Through holes are made at the troughs of the corrugated metal liner, and the slurry of the foamed cement layer penetrates the through holes to form a locking structure.

5. A composite exterior wall panel according to claim 1, characterized in that: It also includes an outer frame fixed to the outside of the decorative sand layer, UHPC layer, polystyrene board layer and foamed cement layer, the outer frame being composed of a stainless steel part and a galvanized steel part.

6. A composite exterior wall panel according to claim 5, characterized in that: An insulating partition layer is provided between the stainless steel part and the galvanized steel part.

7. A composite exterior wall panel according to claim 6, characterized in that: The insulating barrier layer is a polytetrafluoroethylene layer or an engineering plastic layer with a thickness of 0.3-1mm.

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