CN217000462U - Hidden rib inner cavity sandwich type prefabricated lightweight aggregate concrete externally-hung wallboard - Google Patents

Abstract

The utility model discloses a hollow rib inner cavity sandwich type prefabricated light aggregate concrete external wall panel, which comprises a light aggregate concrete shell, an inner cavity insulation layer and a space steel mesh frame; the inner cavity insulation layer is arranged on the light aggregate concrete shell. In the inner cavity of the concrete shell; the space steel mesh frame set between the inner and outer leaves of the lightweight aggregate concrete shell forms the hidden ribs of the wall; The orientations are set in the opposite direction. The design of the inner cavity insulation layer and the L-shaped frame of the utility model meets the requirements of energy saving, greenness and durability; the setting of the hidden ribs can effectively improve the cooperative working performance of the inner and outer leaves of the composite wallboard, and improve the bearing capacity and rigidity of the wallboard; the lightweight aggregate The same cementitious material is used for the concrete shell and the inner cavity insulation layer, which effectively realizes the integrated preparation of the composite wallboard. The utility model can simultaneously meet the functional requirements of the prefabricated external wall panels for light weight, heat preservation, heat insulation, waterproofing and enclosure, and can improve the production efficiency thereof.

Description

A kind of hidden rib inner cavity sandwich type prefabricated lightweight aggregate concrete external wall panel

technical field

The utility model belongs to the technical field of prefabricated building exterior walls, in particular to a preparation and construction technology of a prefabricated lightweight aggregate concrete exterior wall panel suitable for an assembled structure.

Background technique

The construction industry is my country's pillar industry, and the industrialization of new construction is the top priority of my country's future construction industry development. The development of new building industrialization can promote energy conservation and emission reduction in the construction industry, improve resource utilization efficiency, and achieve sustainable social development. The prefabricated production of components and the production methods of prefabricated construction are one of the important characteristics of new building industrialization. Vigorously promoting the construction industrialization focusing on prefabricated buildings is an inevitable trend in the development of my country's construction industry.

The traditional prefabricated external wall panels have the following technical problems: (1) the prefabricated external wall panels of a single material are difficult to meet the requirements of the thermal performance of the enclosure structure; (2) the commonly used thermal insulation forms of composite wall panels are divided into internal thermal insulation, External insulation and sandwich insulation. The thermal insulation effect of the thermal insulation inside the wall is good, but the thermal insulation layer is prone to condensation and humidity. ; Wall sandwich insulation is to compound the thermal insulation layer between the inner and outer leaves of the wall panel. The inner and outer leaves of the wall panel are usually assembled with the insulation layer by means of connectors, and the overall workability of the wall panel is poor; (3) The prefabricated wall panels are mostly made of internal Embedded installation technology, there is a "cold bridge" effect in beams, columns, etc., which reduces the thermal insulation performance of the outer protective structure; (4) The adjacent wall panels are mostly spliced by flat seams, and the sealing of the joints of the wall panels is poor.

Utility model content

The purpose of the utility model is to provide a prefabricated lightweight aggregate concrete external wall panel with a hidden rib inner cavity sandwich type, so as to provide an assembly that is lightweight, excellent in thermal insulation performance, good in stress performance, durable and beautiful, and convenient for integrated preparation. wall panel.

The technical solution that realizes the purpose of the present utility model is:

An inner cavity sandwich type prefabricated light-weight aggregate concrete external wall panel with hidden rib, comprising a light-weight aggregate concrete shell, an inner cavity thermal insulation layer and a space steel mesh frame; the thermal insulation layer is arranged inside the light-weight aggregate concrete shell In the cavity; the space steel mesh frame arranged between the inner and outer leaves of the lightweight aggregate concrete shell forms the wall panel dark rib; the surrounding frame of the lightweight aggregate concrete shell is set as an L-shaped frame, and the L-shaped frames at opposite ends face Instead, the L-shaped frames of adjacent wall panels overlap to form staggered seams.

Compared with the prior art, the present utility model has the following significant advantages:

(1) The outer shell of the external wall panel is made of light aggregate concrete, and the inner cavity is filled with cement-based thermal insulation materials such as polystyrene particle concrete, which can effectively reduce the self-weight of the wall panel and facilitate the integrated preparation of the wall panel; (2) Built-in truss The formation of dark ribs is conducive to improving the mechanical performance and overall working performance of the prefabricated composite wallboard; (3) The thermal insulation material is set as the core layer in the inner cavity enclosed by the lightweight aggregate concrete shell, which can effectively prevent rain, snow, freezing and thawing and other unfavorable factors to the damage of the thermal insulation material, ensure the thermal insulation effectiveness and durability of the core layer material, and improve the thermal performance of the composite sandwich wall panel; (4) the left and right, upper and lower adjacent wall panels are L-shaped staggered joints At the interface, the beams, columns and other components of the main structure are enclosed on the inside of the wall panel, which can solve the problem of poor sealing at the joints, and at the same time avoid the "cold bridge" effect and reduce heat loss; (5) Lightweight aggregate concrete When the shell is produced, the lightweight ceramsite is used instead of crushed stone to make concrete, and the wall panel adopts a cavity structure, which can significantly reduce the weight of the precast concrete wall panel, facilitate transportation and installation, and reduce the load of the main structure.

Description of drawings

Figure 1 is a schematic diagram of the appearance structure of the utility model.

Figure 2 is a cross-sectional view of the utility model A-A.

Figure 3 is a schematic diagram of a space steel mesh frame.

FIG. 4 is a schematic diagram of the splicing of the left and right surfaces of the present invention.

FIG. 5 is a schematic diagram of the splicing of the upper and lower surfaces of the utility model.

In the figure: Lightweight aggregate concrete shell 1, thermal insulation layer 2, space steel mesh frame 3, L-shaped vertical frame 4, L-shaped horizontal frame 5, inner leaf plate 6, outer leaf plate 7, first steel mesh 8, The second reinforcing mesh sheet 9 , the first concealed rib 10 , the second concealed rib 11 , the installation hole 12 , the frame column 13 , the frame beam 14 , and the rubber pad waterstop 15 .

Detailed ways

The present utility model will be further introduced below in conjunction with the accompanying drawings and specific embodiments.

1 and FIG. 2, the utility model concealed rib inner cavity sandwich type prefabricated lightweight aggregate concrete external wall panel, including lightweight aggregate concrete shell 1, inner cavity insulation layer 2, space steel mesh frame 3; The aggregate concrete shell 1 is composed of an inner leaf 6, an outer leaf 7, an L-shaped vertical frame 4, and an L-shaped horizontal frame 5. The inner 6 and outer 7 blades are respectively provided with a first reinforcing mesh sheet 8 and a second reinforcing mesh. Sheet 9, the first steel mesh sheet 8 and the second steel mesh sheet 9 are connected by a horizontal first concealed rib 10 and a vertical second concealed rib 11 (reinforced truss), and the inner 6 and outer 7 leaves are connected. A cavity is formed between them, and the cavity is filled with a cement-based thermal insulation material to serve as the thermal insulation layer 2; the lightweight aggregate concrete shell 1 is provided with L-shaped vertical frames 4 on the left and right, L-shaped horizontal frames 5 on the upper and lower sides, and adjacent wall panels are staggered and spliced .

Further, the material of the lightweight aggregate concrete shell 1 is ceramsite concrete, the compressive strength is 30MPa, and the dry density is 1600-1900kg/m3; the material of the thermal insulation layer 2 can be polystyrene particle concrete, foam concrete, expanded perlite. Cement-based insulation materials such as cement mortar.

Referring to FIG. 3 , the spatial reinforcement mesh frame 3 includes a first reinforcement mesh sheet 8 , a second reinforcement mesh sheet 9 , a first concealed rib 10 , and a second concealed rib 11 ; the first reinforcement mesh sheet 8 is arranged in the inner leaf 6 , the second steel mesh 9 is arranged in the outer leaf 7, the first concealed rib 10 is arranged horizontally in the middle, and the second concealed rib 11 is arranged vertically in the middle, and jointly connect the inner leaf plate 6 and the outer leaf plate 7.

Referring to FIG. 4 , vertical frames 4 are arranged on the left and right sides of the lightweight aggregate concrete shell 1 . The cross section of the vertical frame 4 is L-shaped, and its short legs are provided with a plurality of mounting holes 12 for connecting with the frame columns. 13 is fixed; the L-shaped mullions 4 on the left and right sides of the housing 1 are facing oppositely;

Referring to FIG. 5 , L-shaped transverse frames 5 are arranged on the upper and lower sides of the lightweight aggregate concrete shell 1 , and the L-shaped transverse frames 5 at both ends of the shell 1 face oppositely; the L-shaped transverse frames 5 of adjacent wall panels overlap up and down Join to form a staggered seam.

Description of the preparation process of the present utility model:

The L-shaped vertical frame 4 , the L-shaped horizontal frame 5 and the installation hole 12 are obtained by designing the mold. After the mold is brushed with the release agent, the welded steel mesh 8 , the horizontal hidden ribs 10 and the vertical hidden ribs 11 Place it in the mold, keeping the steel mesh 8 at a certain distance from the bottom of the formwork; pour the inner blade 6 of the lightweight aggregate concrete shell according to the design thickness; after the inner blade 6 of the lightweight aggregate concrete shell is initially set, pour the middle according to the design thickness. Insulation layer 2; After the insulation layer 2 has a certain bearing capacity, place the steel mesh 9 and weld it with the horizontal concealed ribs 10 and the vertical concealed ribs 11; pour the outer leaf plate 7 of the lightweight aggregate concrete shell and its L-shaped Outer frame; the formwork is removed after the lightweight aggregate concrete reaches the design strength. When the prefabricated wall panels are installed, the wall panels are positioned with the help of temporary supports, and the L-shaped side mullion 4 of the left and right adjacent external wall panels is staggered and spliced; the mounting bolts are passed through the mounting holes on the L-shaped side mullion 4 of the adjacent wall panels 12, and tighten it with the frame column 13 to fix the wall panel on the frame column 13; when splicing the upper and lower adjacent outer wall panels, use the L-shaped horizontal frame 5 to stagger the seam, and install the rubber pad waterstop at all the seams , to ensure the compactness of the exterior wall panels.

Claims (7)

1. A hidden rib inner cavity sandwich type prefabricated lightweight aggregate concrete externally-hung wallboard is characterized by comprising a lightweight aggregate concrete shell (1), an inner cavity heat-insulating layer (2) and a space reinforcing steel bar net rack (3); the heat insulation layer (2) is arranged in the inner cavity of the lightweight aggregate concrete shell (1); a space reinforcing steel bar net rack (3) arranged between the inner leaf and the outer leaf of the light aggregate concrete shell (1) forms a wall plate hidden rib; the peripheral frames of the light aggregate concrete shell (1) are arranged into L-shaped frames, the L-shaped frames at two opposite ends face to the opposite directions, and the L-shaped frames of adjacent wallboards are overlapped to form staggered joints.

2. The hidden rib inner cavity sandwich type prefabricated lightweight aggregate concrete external wallboard according to claim 1, wherein the space rebar grid frame (3) comprises a first rebar mesh sheet (8) and a second rebar mesh sheet (9); the first reinforcing mesh (8) is arranged in the inner leaf (6), the second reinforcing mesh (9) is arranged in the outer leaf (7), and the first reinforcing mesh (8) and the second reinforcing mesh (9) are connected through transverse and vertical dark ribs.

3. The hidden-rib inner-cavity sandwich type prefabricated lightweight aggregate concrete external hanging wallboard as claimed in claim 1, wherein the lightweight aggregate concrete shell (1) is made of ceramsite concrete.

4. The hidden-rib inner-cavity sandwich type prefabricated lightweight aggregate concrete external wallboard according to claim 1, characterized in that the material of the heat-insulating layer (2) is a cement-based heat-insulating material.

5. The hidden-rib inner-cavity sandwich type prefabricated lightweight aggregate concrete external hanging wallboard as claimed in claim 1, wherein mounting holes are reserved on the short limbs of the L-shaped frames at the left side and the right side, and the wallboard is fixed on the frame columns (13) through bolts.

6. The hidden-rib inner-cavity sandwich type prefabricated lightweight aggregate concrete external-hanging wallboard as claimed in claim 1, wherein a rubber-pad water stop (15) is arranged at the staggered joint.

7. The hidden-rib inner-cavity sandwich type prefabricated lightweight aggregate concrete external wallboard according to claim 1, wherein the beam and column members of the main structure are enclosed inside the wallboard.

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