Prefabricated sandwich thermal insulation external wall panel structure

Abstract

The utility model relates to a prefabricated sandwich thermal insulation external wall panel structure which comprises an outer acanthus, an inner acanthus, a thermal insulation layer and a tying piece. The outer acanthus and the inner acanthus are connected through a tie piece, and the heat preservation layer is located between the outer acanthus and the inner acanthus; a reinforcing mesh is arranged in the outer acanthus; the pulling and connecting piece is of a U-shaped structure, the U-shaped end of the pulling and connecting piece is connected with the reinforcing mesh, the opening end of the pulling and connecting piece extends and is fixed to the inner leaf plate, and the opening end of the pulling and connecting piece is provided with a bent part. The outer acanthus, the heat preservation layer and the inner acanthus are prefabricated into an integrated structure through the pulling pieces of U-shaped structures, the reinforcing mesh structure is arranged in the outer acanthus, the crack resistance and the bending resistance are improved, the U-shaped ends of the pulling pieces are pulled to the reinforcing mesh of the outer acanthus, and the opening ends of the pulling pieces penetrate through the heat preservation layer to be anchored to the inner acanthus; the outer acanthus, the heat preservation layer and the inner acanthus are firmly fixed together, the connection strength among the outer acanthus, the heat preservation layer and the inner acanthus is improved, and the bending part is arranged at the opening end of the tying piece, so that an outer wall can be effectively prevented from falling off.

Description

Technical Field

[0001] The utility model relates to the technical field of thermal insulation wall panels, in particular to a prefabricated sandwich thermal insulation exterior wall panel structure. Background Art

[0002] At present, with the promotion and application of prefabricated housing in the country, the ground structures of high-rise residential buildings in many cities are generally constructed with prefabricated prefabricated components. Among them, prefabricated concrete sandwich insulation exterior wall panels, as the main vertical components in prefabricated buildings, integrate the functions of force, insulation and maintenance, and are widely used in most engineering practices.

[0003] In the prior art, the outer blade of the prefabricated concrete sandwich insulation exterior wall panel is generally made of 60-80mm ordinary concrete, plus a 200mm inner blade and a 70-100mm sandwich insulation layer, the thickness will be more than 330mm. The overall thickness is large and the weight is heavy, which leads to easy cracking during transportation and easy external wall shedding after long-term use.

[0004] Based on this, the utility model provides a prefabricated sandwich insulation exterior wall panel structure to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a prefabricated sandwich insulation exterior wall panel structure to solve the technical problems raised in the above-mentioned background technology that the existing prefabricated concrete sandwich insulation exterior wall panels are large in overall thickness and heavy in weight, which lead to easy cracking during transportation and easy exterior wall falling off after long-term use.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A prefabricated sandwich insulation exterior wall panel structure, comprising: an outer blade, an inner blade, an insulation layer and an anchor, the outer blade and the inner blade are connected by the anchor, and the insulation layer is located between the outer blade and the inner blade; a steel mesh is arranged in the outer blade; the anchor is arranged as a U-shaped structure, and the U-shaped end of the anchor is connected to the steel mesh, the open end of the anchor extends and is fixed to the inner blade, and the open end of the anchor is provided with a bending portion.

[0008] As a preferred solution, the outer blade is made of UHPC material.

[0009] As a preferred solution, the bending portion includes a plurality of protrusions and depressions arranged at intervals.

[0010] As a preferred solution, the anchor is arranged on the outer blade in a rectangular shape.

[0011] As a preferred solution, a plurality of transverse reinforcement bars and a plurality of vertical reinforcement bars are provided inside the inner blade, and the transverse reinforcement bars are vertically connected to the vertical reinforcement bars.

[0012] It can be seen from the technical solution provided by the utility model that the prefabricated sandwich insulation exterior wall panel structure provided by the utility model has the following beneficial effects compared with the prior art:

[0013] The outer blade, insulation layer and inner blade are prefabricated into an integral structure by arranging a U-shaped anchor. A steel mesh structure is arranged inside the outer blade to increase the crack resistance and bending resistance. The U-shaped end of the anchor is pulled onto the steel mesh of the outer blade, and the open end of the anchor passes through the insulation layer and is anchored on the inner blade, so that the outer blade, insulation layer and inner blade are firmly fixed together, thereby increasing the connection strength among the three. The open end of the anchor is provided with a bending portion, which can effectively prevent the outer wall from falling off. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A schematic diagram of the overall three-dimensional structure of a prefabricated sandwich insulation exterior wall panel structure provided by an embodiment of the utility model;

[0015] Figure 2 A schematic side cross-sectional view of the overall structure of the prefabricated sandwich insulation exterior wall panel structure provided by an embodiment of the utility model;

[0016] Figure 3 A schematic diagram of the distribution of the anchors of the prefabricated sandwich insulation exterior wall panel structure provided by the embodiment of the utility model;

[0017] Figure 4 The embodiment of the utility model provides Figure 2 Enlarged schematic diagram of the structure at part A in the middle.

[0018] In the figure: 1, outer blade; 11, steel mesh; 2, insulation layer; 3, inner blade; 31, transverse steel bar; 32, vertical steel bar; 4, anchor; 41, bending part; 42, protrusion; 43, depression. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0020] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0021] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0022] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise clearly and specifically defined.

[0023] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0024] See also Figures 1 to 4 The embodiment of the present application provides a prefabricated sandwich insulation exterior wall panel structure, including an outer blade 1, an inner blade 3, an insulation layer 2 and an anchor 4. The outer blade 1 and the inner blade 3 are connected by the anchor 4, and the insulation layer 2 is located between the outer blade 1 and the inner blade 3; a steel mesh 11 is arranged inside the outer blade 1; the anchor 4 is arranged as a U-shaped structure, and the U-shaped end of the anchor 4 is connected to the steel mesh 11, and the open end of the anchor 4 extends and is fixed to the inner blade 3, and the open end of the anchor 4 is provided with a bending portion 41.

[0025] Prefabrication process: The outer blade 1 is connected to the inner blade through the anchor 4, and the insulation layer 2 is sandwiched between the inner blade 3 and the outer blade 1. The anchor 4 is a U-shaped structure. The U-shaped end is pulled on the steel mesh 11 of the outer blade 1, and the open end passes through the insulation layer 2 and is anchored on the inner blade 3. The anchoring length should be greater than half the thickness of the inner blade 3. The outer blade 1 and the insulation layer 2 are fixed together on the inner blade 3 through the U-shaped structure and finally prefabricated into one piece.

[0026] Compared with the prior art, the outer blade 1, the insulation layer 2 and the inner blade 3 are prefabricated into an integral structure by arranging a U-shaped anchor 4, and a steel mesh 11 structure is arranged inside the outer blade 1 to increase the crack resistance and bending resistance. The U-shaped end of the anchor 4 is pulled on the steel mesh 11 of the outer blade 1, and the open end of the anchor 4 passes through the insulation layer 2 and is anchored on the inner blade 3, so that the outer blade 1, the insulation layer 2 and the inner blade 3 are firmly fixed together, thereby increasing the connection strength among the three, and the open end of the anchor 4 is provided with a bending portion 41, which can effectively prevent the outer wall from falling off.

[0027] In one embodiment, the outer blade 1 is made of UHPC, which refers to ultra-high performance concrete. This concrete is considered to be the most durable engineering material. The mechanical properties of UHPC with appropriate reinforcement are close to those of steel structures. At the same time, UHPC has excellent wear resistance and explosion resistance. UHPC is particularly suitable for large-span bridges, explosion-proof structures and thin-walled structures, as well as for use in high-abrasion and high-corrosion environments. The use of UHPC to make the outer blade 1 reduces the thickness of the outer blade 1, reduces the overall deadweight of the sandwich insulation exterior wall panel, solves the problem of hoisting tilt when the lifting point is locally adjusted, improves installation convenience, and reduces the number of anchors 4 used, reducing production costs and saving building area.

[0028] Furthermore, UHPC has the characteristics of high strength and high impact resistance. When used with a fiber mesh or a steel mesh 11, its crack resistance and bending resistance are much higher than those of ordinary reinforced concrete, and it can effectively solve problems such as cracking, bumping and falling off during transportation and installation.

[0029] In one embodiment, Figure 4 As shown, the bending portion 41 includes a plurality of protrusions 42 and depressions 43 arranged at intervals. The plurality of protrusions 42 and depressions 43 arranged at intervals constitute the bending portion 41, which increases the roughness of the surface of the anchor 4 and prevents the outer blade 1 from falling off due to the smooth surface of the anchor 4.

[0030] In one embodiment, Figure 3 As shown, the anchor 4 is arranged in a rectangular shape on the outer blade 1. The rectangular arrangement means that the anchor 4 is arranged in a line up and down and left and right, and the four points are in a rectangular shape.

[0031] In one embodiment, Figure 2 As shown, a plurality of transverse reinforcement bars 31 and a plurality of vertical reinforcement bars 32 are provided inside the inner blade 3, and the transverse reinforcement bars 31 are vertically connected to the vertical reinforcement bars 32. The plurality of transverse reinforcement bars 31 and the plurality of vertical reinforcement bars 32 are vertically connected to form a steel mesh 11-like structure, which increases the compression resistance and bending resistance of the inner blade 3.

[0032] In one embodiment, the insulation board can be a molded polystyrene board (EPS) or an extruded polystyrene board (XPS). The foam insulation board is made of polystyrene resin. The polystyrene foam plastic is divided into two types according to different production processes: molded polystyrene board (EPS) and extruded polystyrene board (XPS).

[0033] In one embodiment, the inner blade 3 is a common reinforced concrete load-bearing layer, and the outer blade 1 is an ultra-high performance concrete (UHPC) layer. The UHPC outer blade 1 can be 16 mm, and the outer blade 1 has a single-layer steel mesh 11 built in, and a finished single-layer single-sided material is used to increase the firmness.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A prefabricated sandwich insulation exterior wall panel structure, characterized in that: include: An outer blade (1), an inner blade (3), a heat-insulating layer (2) and an anchor (4), wherein the outer blade (1) and the inner blade (3) are connected via the anchor (4), and the heat-insulating layer (2) is located between the outer blade (1) and the inner blade (3); A steel mesh (11) is arranged inside the outer blade (1); The anchor (4) is configured as a U-shaped structure, and the U-shaped end of the anchor (4) is connected to the steel mesh (11), the open end of the anchor (4) extends and is fixed to the inner leaf plate (3), and the open end of the anchor (4) is provided with a bent portion (41).

2. The prefabricated sandwich insulation exterior wall panel structure according to claim 1, characterized in that: The outer blade (1) is made of UHPC material.

3. The prefabricated sandwich insulation exterior wall panel structure according to claim 1, characterized in that: The bending portion (41) comprises a plurality of protrusions (42) and recesses (43) arranged at intervals.

4. The prefabricated sandwich insulation exterior wall panel structure according to claim 1, characterized in that: The anchor (4) is arranged in a rectangular shape on the outer blade (1).

5. The prefabricated sandwich insulation exterior wall panel structure according to claim 1, characterized in that: A plurality of transverse reinforcement bars (31) and a plurality of vertical reinforcement bars (32) are arranged inside the inner blade plate (3), and the transverse reinforcement bars (31) are vertically connected to the vertical reinforcement bars (32).

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