Wallboard with sandwich structure

Abstract

The embodiment of the utility model relates to a wallboard with a sandwich structure, which comprises a UHPC (Ultra High Performance Concrete) inner surface layer, an aerogel felt core layer, a UHPC outer surface layer and a connecting piece, and the aerogel felt core layer is arranged between the UHPC inner surface layer and the UHPC outer surface layer; the connecting piece is dumbbell-shaped and is used for connecting and fixing the UHPC inner surface layer, the aerogel felt core layer and the UHPC outer surface layer; the middle of the connecting piece penetrates through the aerogel felt core layer, the two ends of the connecting piece are embedded into the UHPC inner face layer and the UHPC outer face layer correspondingly, the two ends of the connecting piece and the face layers are meshed and wedged, in-plane shearing force and out-plane pulling force are resisted, the risk that the wallboard falls in the using process is avoided, and meanwhile the wallboard further has the sound insulation and heat insulation effects.

Description

Technical Field

[0001] This utility model relates to the field of construction, and in particular to a wall panel with a sandwich structure. Background Technology

[0002] With the increase in residential, apartment, office, educational, and hospital buildings in my country, the requirements for sound insulation and thermal insulation are also becoming increasingly stringent. Ordinary wall materials cannot effectively isolate the sound insulation problems caused by vibrations. Good sound insulation and thermal insulation environments have become one of the important characteristics of green buildings. As a result, various types of exterior wall panels are constantly being introduced and widely used in the construction industry.

[0003] Currently, most existing exterior wall panels use aerogel felt. Aerogel felt has poor weather resistance in outdoor environments, cannot play a stable role in thermal insulation for a long time, and has low strength, making it easy to fall off after being installed on the wall. It also has problems with poor sound insulation and thermal insulation effects. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by providing a wall panel with a sandwich structure, specifically including an inner UHPC layer, an aerogel felt core layer, an outer UHPC layer, and connectors. It has strong sound insulation and heat insulation effects. The two ends of the connector are respectively embedded in the inner and outer UHPC layers, and the two ends interlock with the surface layers to resist in-plane shear force and out-of-plane tensile force, thus avoiding the risk of the wall panel falling off during use.

[0005] To achieve the above objectives, this utility model provides a wall panel with a sandwich structure, comprising an inner UHPC layer, an aerogel felt core layer, an outer UHPC layer, and connectors; wherein,

[0006] The aerogel felt core layer is disposed between the inner surface layer and the outer surface layer of the UHPC;

[0007] The connector is dumbbell-shaped and is used to connect and fix the UHPC inner surface layer, the aerogel felt core layer and the UHPC outer surface layer; the middle part of the connector passes through the aerogel felt core layer, and the two ends of the connector are respectively embedded in the UHPC inner surface layer and the UHPC outer surface layer.

[0008] Preferably, the outer wall of the middle part of the connector has a threaded structure to increase the friction between the connector and the aerogel felt core layer.

[0009] Preferably, the cross-sectional areas at both ends of the connector are larger than the cross-sectional area in the middle, thereby increasing the pull-out resistance between the connector and the inner and outer layers of the UHPC.

[0010] Preferably, the connector includes a sleeve and a core column. The sleeve is fitted onto both ends of the core column and can rotate around the core column, thereby reducing the torque on the connector when coordinating the deformation of the UHPC surface layer and the aerogel felt core layer.

[0011] More preferably, the sleeve is made of ABS material and the core is made of FRP material.

[0012] More preferably, the outer wall of the sleeve is provided with multiple protrusions.

[0013] Preferably, the thickness of the inner and outer UHPC layers is not less than 8 mm; the strength grade is not less than 100 MPa.

[0014] Preferably, the thickness of the aerogel felt core layer is 3 mm to 10 mm, and the thermal conductivity is less than 0.1 W / (m·K).

[0015] Preferably, the thermal conductivity of the connector is less than 0.5 W / (m·K).

[0016] Preferably, the embedding depth of the end of the connector in both the outer and inner layers of the UHPC is not less than 3 mm.

[0017] This utility model provides a wall panel with a sandwich structure, specifically including an inner UHPC layer, an aerogel felt core layer, an outer UHPC layer, and connectors. It has strong sound insulation and heat insulation effects. The two ends of the connectors are respectively embedded in the inner UHPC layer and the outer UHPC layer, and the two ends interlock with the surface layer to resist in-plane shear force and out-of-plane tensile force, avoiding the risk of the wall panel falling off during use. Attached Figure Description

[0018] Figure 1 A schematic diagram of a wall panel structure with a sandwich structure is provided for an embodiment of this utility model;

[0019] Figure 2 An exploded view of a wall panel unit with a sandwich structure provided for an embodiment of this utility model;

[0020] Figure 3 A schematic diagram of a wall panel unit layer structure provided for an embodiment of this utility model;

[0021] Figure 4 A schematic diagram of a connector structure provided in an embodiment of this utility model;

[0022] Figure 5 A schematic diagram of another wall panel unit layer structure provided in this embodiment of the utility model;

[0023] Figure 6This is a schematic diagram of another connector structure provided in an embodiment of the present utility model. Detailed Implementation

[0024] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0025] Figure 1 This is a schematic diagram of a wall panel structure with a sandwich structure provided by an embodiment of the present utility model. Figure 2 An exploded view of a wall panel with a sandwich structure provided for an embodiment of this utility model, as shown below. Figure 1 and Figure 2 As shown, the wall panel with a sandwich structure provided in this embodiment of the present invention includes an inner UHPC layer 11, an aerogel felt core layer 12, an outer UHPC layer 13, and a connector 14. It can be understood that the wall panel in this example has a three-layer sandwich structure, consisting of an inner UHPC layer 11, an aerogel felt core layer 12, and an outer UHPC layer 13, from the inside to the outside. The two layers and the aerogel felt core layer 12 are connected and fixed together by the connector 14. The following describes the details... Figure 1 and Figure 2 The structure of each part of the wall panel is described in detail.

[0026] The UHPC inner layer 11 and UHPC outer layer 13 are made of the same material. The UHPC inner layer 11 and UHPC outer layer 13 are respectively set on the inner and outer sides of the aerogel felt core layer 12. In order to ensure reliable connection, the thickness of the UHPC inner layer 11 and UHPC outer layer 13 is not less than 8mm and the strength grade is not less than 100MPa, thereby ensuring that the wall panel has good sound insulation effect and strength.

[0027] The aerogel felt core layer 12, used for sound and heat insulation, is disposed between the inner layer 11 and the outer layer 13 of the UHPC. Preferably, the thickness of the aerogel felt core layer 12 is 3mm to 10mm to ensure the sound insulation effect of the wall panel. The thermal conductivity of the aerogel felt core layer 12 is less than 0.1W / (m·k) to ensure the heat insulation effect of the wall panel. The table below shows the data on the gain effect of aerogel felt on the heat insulation performance of the wall panel.

[0028] Table 1. Data on the effect of aerogel felt on the thermal insulation performance of wall panels.

[0029]

[0030]

[0031] As shown in Table 1, taking a 100mm thick UHPC wall panel as an example, its average heat transfer coefficient is as high as 5 [W / (m²]. 2Applying aerogel coatings of 3mm, 6mm, and 9mm thickness to the wall surface can reduce its average heat transfer coefficient to 2.86 [W / (m²).] 2 ·K)]、2[W / (m 2 ·K)]、0.65[W / (m 2 The maximum reduction is as high as 87%, and the thermal insulation performance is significantly improved.

[0032] The connector 14, in the shape of a dumbbell, is used to connect and fix the UHPC inner surface layer 11, the aerogel felt core layer 12, and the UHPC outer surface layer 13. The middle part of the dumbbell-shaped connector 14 passes through the aerogel felt core layer 12, and the two ends of the connector 14 are respectively embedded in the UHPC inner surface layer 11 and the UHPC outer surface layer 13. The two ends 141 interlock with the surface layer to resist in-plane shear force and out-of-plane tensile force, thus avoiding the risk of the wall panel falling off during use.

[0033] Preferably, in this embodiment, the embedding depth of the end of the connector 14 in both the outer UHPC layer 13 and the inner UHPC layer 11 is not less than 3 mm, thereby ensuring the connection strength between the UHPC layer, the aerogel felt core layer 12, and the connector 14. It should be noted that those skilled in the art can specifically design the thickness of the inner UHPC layer 11, the aerogel felt core layer 12, and the outer UHPC layer 13 according to the climate and building codes of different regions, and design the embedding depth of the end 141 of the connector 14 in the outer UHPC layer 13 and the inner UHPC layer 11 based on the thickness of the inner UHPC layer 11, the aerogel felt core layer 12, and the outer UHPC layer 13. It is necessary to ensure that the connector 14 used can firmly connect the outer UHPC layer 13, the inner UHPC layer 11, and the aerogel felt core layer 12.

[0034] Furthermore, in this embodiment, the thermal conductivity of the connector 14 is less than 0.5 W / (m·k), thereby ensuring the heat insulation effect of the wall panel.

[0035] The wall panel provided in this embodiment can be composed of multiple wall panel units. The structure of the wall panel unit and the structure of the connector 14 are described in detail below with two specific examples.

[0036] Figure 3 This is a schematic diagram of a wall panel unit layer structure provided in an embodiment of the present utility model. Figure 4 This is a schematic diagram of a connector structure provided by an embodiment of the present utility model. In a specific embodiment, it is combined with... Figure 3 and Figure 4As shown, the connector 14 can be an integral connector 14. The outer wall of the middle portion 142 of the connector 14 has a threaded structure. The threaded shape increases mechanical friction with the core layer, thereby increasing the friction between the connector 14 and the aerogel felt core layer 12. Furthermore, the cross-sectional area of ​​the two ends 141 of the connector 14 is larger than the cross-sectional area of ​​the middle portion 142. The increased cross-sectional size at both ends of the connector 14 is embedded in the surface layer, increasing the pull-out resistance, thereby increasing the pull-out resistance between the connector 14 and the UHPC inner surface layer 11 and the UHPC outer surface layer 13, avoiding the risk of the wall panel surface layer falling off during use. Preferably, the connector 14 in this example can be made of FRP material, which is simple in form, easy to process, and low in cost. Here, FRP is formed by bonding multiple continuous fibers (such as glass fiber, carbon fiber, etc.) with a base material (such as polyamide resin, polyethylene resin, epoxy resin, etc.), and then extruding and drawing them using a special mold.

[0037] Figure 5 This is a schematic diagram of another wall panel unit layer structure provided in an embodiment of the present utility model. Figure 6 This is a schematic diagram of another connector structure provided in an embodiment of the present utility model. In another specific embodiment, it is combined with... Figure 5 and Figure 6 As shown, the connector 14 can also be a split connector 14. Specifically, the connector 14 can include a sleeve 144 and a core column 143. The sleeve 144 is fitted onto both ends of the core column 143, and the constraint between the two is relaxed, that is, the sleeve 144 can rotate around the core column 143, thereby reducing the torque on the connector 14 when coordinating the deformation of the UHPC surface layer 11 (13) and the aerogel felt core layer 12. Preferably, in this example, the sleeve 144 can be made of engineering plastics such as ABS, and the core column 143 can be made of FRP. In a preferred embodiment, the outer wall of the sleeve 144 can also be provided with multiple protrusions 1441 to increase the mechanical friction with the core layer, thereby increasing the friction between the connector 14 and the aerogel felt core layer 12 and ensuring the connection strength.

[0038] It should be noted that those skilled in the art can select and set the dimensions of the UHPC inner layer 11, the aerogel felt core layer 12, and the UHPC outer layer 13 according to the dimensions of the wall panel. In this embodiment, the coverage area of ​​the wall panel unit is preferably 300mm×300mm. It is understood that the wall panel unit here does not mean that the wall panel is physically divided according to the unit size, but rather that the wall panel range constrained by a single connector is defined by the unit size. Those skilled in the art can combine several wall panel units as needed. Several wall panel units can be manufactured into a wall panel at one time, or they can be manufactured into a specific size and spliced ​​into a whole wall panel according to a certain connection method.

[0039] This utility model provides a wall panel with a sandwich structure, specifically including an inner UHPC layer, an aerogel felt core layer, an outer UHPC layer, and connectors. The two UHPC layers serve as both load-bearing and protective layers, providing strong sound and heat insulation. They are secured by connectors, with both ends embedded in the inner and outer UHPC layers respectively. The ends interlock with the layers to resist in-plane shear forces and out-of-plane tensile forces, avoiding the risk of the wall panel falling off during use. This also solves the bonding problems between the aerogel felt and the UHPC panel, as well as the poor weather resistance of the aerogel felt.

[0040] In this utility model, the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0041] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0042] In the description herein, the terms "a specific embodiment," "some embodiments," "one embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0043] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A wall panel with a sandwich structure, characterized in that, The wall panel with a sandwich structure includes an inner UHPC layer, an aerogel felt core layer, an outer UHPC layer, and connectors; wherein... The aerogel felt core layer is disposed between the inner surface layer and the outer surface layer of the UHPC; The connector is dumbbell-shaped and is used to connect and fix the UHPC inner surface layer, the aerogel felt core layer and the UHPC outer surface layer; the middle part of the connector passes through the aerogel felt core layer, and the two ends of the connector are respectively embedded in the UHPC inner surface layer and the UHPC outer surface layer.

2. The wall panel with a sandwich structure according to claim 1, characterized in that, The outer wall of the middle part of the connector has a threaded structure to increase the friction between the connector and the aerogel felt core layer.

3. The wall panel with a sandwich structure according to claim 1, characterized in that, The cross-sectional areas at both ends of the connector are larger than those in the middle, thereby increasing the pull-out resistance between the connector and the inner and outer layers of the UHPC.

4. The wall panel with a sandwich structure according to claim 1, characterized in that, The connector includes a sleeve and a core column. The sleeve is fitted onto both ends of the core column and can rotate around the core column, thereby reducing the torque on the connector when coordinating the deformation of the UHPC surface layer and the aerogel felt core layer.

5. The wall panel with a sandwich structure according to claim 4, characterized in that, The sleeve is made of ABS material, and the core is made of FRP material.

6. The wall panel with a sandwich structure according to claim 4, characterized in that, The outer wall of the sleeve is provided with multiple protrusions.

7. The wall panel with a sandwich structure according to claim 1, characterized in that, The thickness of the inner and outer UHPC layers is not less than 8 mm; the strength grade is not less than 100 MPa.

8. The wall panel with a sandwich structure according to claim 1, characterized in that, The thickness of the aerogel felt core layer is 3 mm to 10 mm, and the thermal conductivity is less than 0.1 W / (m·K).

9. The wall panel with a sandwich structure according to claim 1, characterized in that, The thermal conductivity of the connector is less than 0.5 W / (m·K).

10. The wall panel with a sandwich structure according to claim 1, characterized in that, The embedding depth of the end of the connector in both the outer and inner layers of the UHPC is not less than 3 mm.

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