CN218970358U

CN218970358U - Assembled building double-skin outer wall structure

Info

Publication number: CN218970358U
Application number: CN202320148351.1U
Authority: CN
Inventors: 黄天祥; 黄慧敏
Original assignee: YOULIHUA BUILDING MATERIALS (HUIZHOU) CO Ltd
Current assignee: YOULIHUA BUILDING MATERIALS (HUIZHOU) CO Ltd
Priority date: 2023-02-01
Filing date: 2023-02-01
Publication date: 2023-05-05
Anticipated expiration: 2033-02-01

Abstract

The utility model discloses an assembled building double-skin outer wall structure, which comprises: an inner prefabricated wall body (1), an outer prefabricated wall body (2) and a cast-in-situ reinforced concrete layer (3) positioned between the inner prefabricated wall body and the outer prefabricated wall body; a plurality of convex columns (11) protruding outwards are fixedly arranged on the outer side surface of the prefabricated inner wall body (1), and a first connecting piece (4) is embedded in each convex column (11); a pit (21) is arranged at the position corresponding to the convex column (11) on the outer side surface of the prefabricated outer wall body (2), and a second connecting piece (5) is arranged at the pit (21); the first connecting piece (4) and the second connecting piece (5) are connected with each other so as to connect the prefabricated inner wall body (1) and the prefabricated outer wall body (2) together. The double-skin outer wall structure of the assembled building greatly reduces the construction procedure of the outer wall of the building site and the repair work of the reserved wall through holes on the wall body in the later period, can realize the integrated decoration of the inner wall surface of the assembled building, and improves the construction speed.

Description

Assembled building double-skin outer wall structure

Technical Field

The utility model relates to a building structure, in particular to a structure for assembling prefabricated building unit outer walls in a composite building.

Background

In the prior art, an assembled composite building is formed by combining a plurality of prefabricated building units, wherein the wall body of each prefabricated building unit is a semi-prefabricated wall, when in a construction site, reinforcing steel bars are required to be bound outside the semi-prefabricated wall, and cast-in-place concrete is required to form a cast-in-place wall outer layer after a wall plate mold is installed, but for the wall body at the outer wall of the assembled composite building, the bottom of an external wall plate mold is not supported, a wall penetrating hole is required to be reserved on the semi-prefabricated wall of the prefabricated building unit, the external wall plate mold is fixed on the prefabricated building unit through the wall penetrating screw, and the wall penetrating screw is required to be removed and the wall penetrating hole on the wall body is required to be repaired after the cast-in-place wall outer layer is formed, so that the construction procedures of the outer wall are more, labor and time are relatively consumed, a large number of templates are required to be matched for construction, the quality of the wall surface of the outer wall is difficult to unify and lift, and the problem is caused, and the inner surface of the wall of the prefabricated building unit cannot realize integral decoration.

Disclosure of Invention

The utility model aims to solve the technical problem of providing an assembled composite building double-skin outer wall structure without installing an outer wall plate die and an outer wall penetrating screw.

The technical scheme of the utility model is as follows: an assembled composite building double skin exterior wall structure comprising: the prefabricated inner wall body comprises a prefabricated outer wall body fixed on the outer side of the prefabricated inner wall body and a cast-in-situ reinforced concrete layer positioned between the prefabricated inner wall body and the prefabricated outer wall body;

a plurality of convex columns protruding outwards are fixedly arranged on the outer side surface of the prefabricated inner wall body, and a first connecting piece is embedded in each convex column; a pit is arranged at the position corresponding to the convex column on the outer side surface of the prefabricated outer wall, and a second connecting piece is arranged at the pit; the first connecting piece and the second connecting piece are mutually connected so as to connect the prefabricated inner wall body and the prefabricated outer wall body together.

The first connecting piece is a nut, the second connecting piece is a screw rod, and a through hole for the screw rod to pass through is formed at the position opposite to the convex column and the concave pit.

And each connecting piece I is welded and fixed with two L-shaped steel bars, and the two L-shaped steel bars are buried in the prefabricated inner wall body.

The outer side surface of the prefabricated inner wall body is provided with inner wall vertical raised strips and inner wall vertical grooves which are arranged alternately, so that the outer side of the horizontal section of the prefabricated inner wall body is in a concave-convex alternate shape; the prefabricated outer wall is characterized in that outer wall vertical raised strips and outer wall vertical grooves which are alternately arranged are arranged on the inner side face of the prefabricated outer wall body, and therefore the inner side of the horizontal section of the prefabricated outer wall body is in a concave-convex alternate shape.

The positions of the inner wall vertical raised strips and the outer wall vertical raised strips correspond, and the convex columns are arranged on the inner wall vertical raised strips and are propped against the outer wall vertical raised strips.

The pits are filled with cement mortar.

Compared with the prior art, the assembled composite building double-skin outer wall structure is provided with the prefabricated inner wall body and the prefabricated outer wall body, and the prefabricated inner wall body and the prefabricated outer wall body are integrally connected by the connecting piece I and the connecting piece II which are not required to be taken out afterwards and then hoisted to a construction site to finish the work of adding reinforcing steel bars and pouring concrete, so that wall penetrating holes are not required to be reserved on the wall body of a prefabricated building unit, an outer wall plate mould and a wall penetrating screw rod are not required to be installed during site construction, the construction procedure of the outer wall of a construction site is greatly reduced, and a hanging cage is not required to be used at the construction site; meanwhile, holes are prevented from being left at the inner wall positions of the prefabricated building units, so that the later repair work of reserving wall penetrating holes on the wall body is reduced, the indoor decoration and the construction production period of a construction site are not influenced, and the integrated decoration of the inner wall surfaces of the assembled and synthesized building can be realized; in addition, the number of iron plates and the use of a balance can be reduced, the construction production period of a construction site can be shortened, and the surface quality of the outer wall surface is improved.

Drawings

FIG. 1 is a schematic diagram of a construction method step 1 of a double-skin outer wall structure of the present utility model;

FIG. 2 is a schematic diagram of a construction method step 2 of the double skin exterior wall structure of the present utility model;

FIG. 3 is a schematic perspective view of a construction method step 3 of the double-skin outer wall structure of the present utility model;

FIG. 4 is a schematic cross-sectional view of step 3 of the construction method of the double skin exterior wall structure of the present utility model;

FIG. 5 is a schematic diagram of step 4 of the construction method of the double-skin outer wall structure of the present utility model;

FIG. 6 is a schematic perspective view of a construction method step 5 of the double skin exterior wall structure of the present utility model;

FIG. 7 is a schematic cross-sectional view of step 5 of the construction method of the double skin exterior wall structure of the present utility model;

FIG. 8 is a horizontal cross-section through the stud and pit of FIG. 4;

FIG. 9 is a vertical cross-sectional view of the assembled composite building double skin exterior wall structure of the present utility model;

fig. 10 is a horizontal sectional view of the assembled composite building double skin exterior wall structure of the present utility model.

Description of the embodiments

The present utility model will be described in further detail with reference to examples and drawings.

The double skin exterior wall structure of the assembled composite building of the present utility model is provided at an exterior wall of the assembled composite building, as shown in fig. 6 and 10, and includes: the prefabricated inner wall body 1 of the inner layer, the prefabricated outer wall body 2 of the outer layer and the cast-in-situ reinforced concrete layer 3 positioned between the prefabricated inner wall body 1 and the prefabricated outer wall body 2.

The prefabricated inner wall 1 is prefabricated in a factory, as shown in fig. 2, and may be one wall of a prefabricated building unit 10 arranged near the outdoor side of an assembled building, and is integrally prefabricated along with the prefabricated building unit 10, a plurality of protruding columns 11 protruding outwards are integrally prefabricated at the outer side of the prefabricated inner wall 1, and a connecting piece one 4 is embedded in the protruding columns 11. In this embodiment, the posts 11 are square concrete blocks with a thickness of 75×75×70mm, wherein the thickness of the posts 11 protruding out of the prefabricated interior wall body 1 is 70mm, the posts 11 are arranged in a plurality of rows and columns at a certain distance, and the front end surfaces of the posts 11 are located on the same vertical plane.

The prefabricated outer wall body 2 is also prefabricated in a factory, as shown in fig. 3, the outer side surface of the prefabricated outer wall body 2 is provided with a plurality of pits 21, the positions of the pits 21 are respectively in one-to-one correspondence with the positions of the convex columns 11 on the prefabricated inner wall body 1, and the connecting pieces two 5 are arranged at the pits 21. In this embodiment, the pit 21 is a square pit of 85×85mm, and the depth of the pit is 42mm.

As shown in fig. 8 and 9, in the present embodiment, the first connecting member 4 is a nut, the second connecting member 5 is a screw, and for this purpose, the first through hole 14 and the second through hole 24 through which the screw passes are respectively provided at opposite positions of the protruding pillar 11 and the pit 21, the prefabricated inner wall 1 and the prefabricated outer wall 2 can be fixedly connected together by connecting the first connecting member 4 and the second connecting member 5 to each other, and the interlayer formed between the prefabricated inner wall 1 and the prefabricated outer wall 2 can be used for installing reinforcing steel bars and casting concrete in situ on a construction site to form the cast-in-situ reinforced concrete layer 3. As shown in fig. 9, a spacer 51 is further disposed at the bottom of the pit 21, and the screw sequentially passes through the spacer 51, the second through hole 24, and the first through hole 14 and then is connected with a nut embedded in the boss 11. Of course, other connection members, such as a common clamping member, may be used for the first connector 4 and the second connector 5.

The convex column 11 is arranged to fixedly arrange the first connecting piece 4 and separate opposite surfaces of the prefabricated inner wall body 1 and the prefabricated outer wall body 2 by a certain distance to form an interlayer, the concave pit 21 is arranged to accommodate and mount the second connecting piece 5, and after the first connecting piece 4 and the second connecting piece 5 are connected with each other, the concave pit 21 can be filled with cement mortar. Therefore, the outer wall plate mould is not required to be installed on the construction site, the prefabricated outer wall body 2 can be used as the outer wall plate mould, and the through holes penetrating through the whole wall body and the installation wall penetrating screws are not required to be arranged on the prefabricated inner wall body 1, so that the inner side surface of the prefabricated inner wall body 1 can be integrally decorated in a factory.

In order to ensure that the first connecting member 4 is stably arranged in the protruding column 11, as shown in fig. 9, each first connecting member 4 is welded and fixed with the ends of the two upper and lower L-shaped steel bars 6, and the two L-shaped steel bars 6 are buried in the prefabricated inner wall 1, so that when the first connecting member 4 and the second connecting member 5 are connected with each other, the first connecting member 4 is not pulled out of the protruding column 11.

In order to increase the binding force between the prefabricated wall body and the cast-in-situ wall body and facilitate the arrangement of reinforcing steel bars, the opposite surfaces of the prefabricated inner wall body 1 and the prefabricated outer wall body 2 are respectively arranged in a concave-convex alternate shape, as shown in fig. 1, the outer side surface of the prefabricated inner wall body 1 is provided with inner wall vertical raised strips 12 and inner wall vertical grooves 13 which are alternately arranged, and therefore the outer side of the horizontal section of the prefabricated inner wall body 1 is in a concave-convex alternate shape. Similarly, the inner side surface of the prefabricated outer wall body 2 is provided with outer wall vertical raised strips 22 and outer wall vertical grooves 23 which are alternately arranged, so that the inner side of the horizontal section of the prefabricated outer wall body 2 is in an uneven alternate shape. As shown in fig. 8 and 10, the inner wall vertical protruding strips 12 and the outer wall vertical protruding strips 22 correspond to each other, and the inner wall vertical grooves 13 and the outer wall vertical grooves 23 correspond to each other, wherein the protruding columns 11 are disposed on the inner wall vertical protruding strips 12 and are abutted against the outer wall vertical protruding strips 22.

The construction method for assembling the composite building double-skin outer wall structure comprises the following steps:

step 1, as shown in fig. 1, manufacturing a prefabricated inner wall body 1 and a prefabricated outer wall body 2, wherein a plurality of protruding columns 11 protruding outwards are integrally prefabricated on the outer side of the prefabricated inner wall body 1, nuts are embedded in the protruding columns 11, the nuts are welded and fixed with the end parts of two L-shaped steel bars 6, the two L-shaped steel bars 6 are embedded in the prefabricated inner wall body 1, and a plurality of pits 21 corresponding to the protruding columns 11 are arranged on the outer side surface of the prefabricated outer wall body 2;

step 2, as shown in fig. 2, erecting the prefabricated inner wall body 1 by using diagonal braces;

step 3, as shown in fig. 3 and fig. 4, hanging the prefabricated outer wall body 2 to the outer side of the erected prefabricated inner wall body 1, adjusting the prefabricated outer wall body 2 to be erected and enabling the convex columns 11 to correspond to the positions of the concave pits 21, connecting the concave pits 21 with nuts in the convex columns 11 through screws so as to enable the prefabricated inner wall body 1 and the prefabricated outer wall body 2 to be connected into a whole, filling the concave pits 21 with cement mortar, and fixedly connecting the prefabricated inner wall body 1 with the top of the prefabricated outer wall body 2 through the L-shaped temporary fixing pieces 8;

step 4, as shown in fig. 5, hoisting the prefabricated inner wall body 1 and the prefabricated outer wall body 2 which form a whole to the installation position of a construction site, and adjusting to be vertical and fixing by using diagonal bracing;

step 5, as shown in fig. 6 and 7, placing the pricked cast-in-situ layer steel bars 7 into the interlayer between the prefabricated inner wall body 1 and the prefabricated outer wall body 2 to a proper position, and sealing templates at the left end and the right end of the wall body;

and 6, pouring concrete in the interlayer between the prefabricated inner wall body 1 and the prefabricated outer wall body 2, thereby forming the outer wall structure shown in fig. 9 and 10.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims

1. An assembled composite building double skin exterior wall structure comprising: prefabricated interior wall body (1), its characterized in that:

the prefabricated inner wall body (1) is fixed on the outer side of the outer wall body, and the prefabricated outer wall body (2) is fixed on the outer side of the outer wall body;

a plurality of convex columns (11) protruding outwards are fixedly arranged on the outer side surface of the prefabricated inner wall body (1), and a first connecting piece (4) is embedded in each convex column (11); a pit (21) is arranged at the position corresponding to the convex column (11) on the outer side surface of the prefabricated outer wall body (2), and a second connecting piece (5) is arranged at the pit (21); the first connecting piece (4) and the second connecting piece (5) are connected with each other so as to connect the prefabricated inner wall body (1) and the prefabricated outer wall body (2) together.

2. The assembled composite building double skin exterior wall structure of claim 1, wherein: the first connecting piece (4) is a nut, the second connecting piece (5) is a screw rod, and a through hole for the screw rod to pass through is formed in the position opposite to the convex column (11) and the concave pit (21).

3. The assembled composite building double skin exterior wall structure of claim 2, wherein: each first connecting piece (4) is welded and fixed with two L-shaped steel bars (6), and the two L-shaped steel bars (6) are buried in the prefabricated inner wall body (1).

4. The assembled composite building double skin exterior wall structure of claim 1, 2 or 3, wherein: the outer side surface of the prefabricated inner wall body (1) is provided with inner wall vertical raised strips (12) and inner wall vertical grooves (13) which are alternately arranged, so that the outer side of the horizontal section of the prefabricated inner wall body (1) is in a concave-convex alternate shape; the inner side surface of the prefabricated outer wall body (2) is provided with outer wall vertical raised strips (22) and outer wall vertical grooves (23) which are alternately arranged, so that the inner side of the horizontal section of the prefabricated outer wall body (2) is in a concave-convex alternate shape.

5. The assembled composite building double skin exterior wall structure of claim 4, wherein: the positions of the inner wall vertical raised strips (12) and the outer wall vertical raised strips (22) correspond, and the convex columns (11) are arranged on the inner wall vertical raised strips (12) and are propped against the outer wall vertical raised strips (22).

6. The assembled composite building double skin exterior wall structure of claim 4, wherein: and filling up the pits (21) with cement mortar.