CN114135023A - Assembled building outer wall and construction method - Google Patents

Assembled building outer wall and construction method Download PDF

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Publication number
CN114135023A
CN114135023A CN202111612925.8A CN202111612925A CN114135023A CN 114135023 A CN114135023 A CN 114135023A CN 202111612925 A CN202111612925 A CN 202111612925A CN 114135023 A CN114135023 A CN 114135023A
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China
Prior art keywords
wall
rod
steel reinforcement
installation
wall body
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CN202111612925.8A
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Chinese (zh)
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CN114135023B (en
Inventor
朱岳童
魏传涛
丁奇
宋羽
刘国栋
辛宁
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Shandong Tongchuang Design Consulting Group Co ltd
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Shandong Tongchuang Design Consulting Group Co ltd
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    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B2/00Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00Foundations as substructures
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/14Conveying or assembling building elements

Abstract

The utility model relates to an assembly type structure's technical field, an assembly type structure outer wall is disclosed, it includes outer wall body and connecting device, the outer wall body includes the side fascia, concrete layer, interior wallboard and a plurality of framework of steel reinforcement, side fascia and interior wallboard parallel arrangement, the equal fixed connection of a plurality of framework of steel reinforcement is between side fascia and interior wallboard, a plurality of frameworks of steel reinforcement set up along the direction interval of keeping away from ground, concrete layer is located between side fascia and the interior wallboard, the framework of steel reinforcement part is buried underground in the concrete layer, concrete layer is close to one side of ground and has been seted up a plurality of spliced eyes that are used for wearing to establish the connecting piece of steel reinforcement, coupling mechanism includes anchor assembly and coupling mechanism, anchor assembly buries underground in the ground, a plurality of frameworks of steel reinforcement all are connected with coupling mechanism, coupling mechanism can dismantle with anchor assembly and be connected. This application has the effect that improves the stability of being connected between outer wall body and the ground.

Description

Assembled building outer wall and construction method
Technical Field
The application relates to the field of assembly type buildings, in particular to an outer wall of an assembly type building.
Background
The fabricated building is a building which is formed by transferring a large amount of field operation work in the traditional construction mode to a factory, processing and manufacturing building components and accessories (such as floor slabs, wall slabs, stairs, balconies and the like) in the factory, transporting the components and accessories to a building construction site, and assembling and installing the components and the accessories on the site in a reliable connection mode.
At present, in the assembly type building work process, mostly the staff sets up the ground in the below ground earlier, sets up the steel bar connection spare on the ground according to the planning picture, then is connected assembled outer wall and steel bar connection spare to at one side joint support pole of assembled outer wall, the one end fixed connection that the assembled outer wall was kept away from to the bracing piece is subaerial, utilizes the bracing piece to support the assembled outer wall. After the two adjacent surface assembled outer walls are installed, assembling and pouring mold boxes between the two adjacent surface assembled outer walls, pouring connecting piles between the two adjacent surface assembled outer walls, connecting the two surface assembled outer walls together by using the connecting piles, and dismantling the pouring mold boxes after the connecting piles are cured.
In view of the above-mentioned related technologies, the inventor thinks that after the assembled outer wall is connected with the steel bar connecting piece, there is a certain clearance inevitably between the steel bar connecting piece and the assembled outer wall, and there is a defect that the stability of the connection between the assembled outer wall and the foundation is low.
Disclosure of Invention
In order to alleviate the lower problem of stability of being connected between assembled outer wall and the ground, this application provides an assembled building outer wall.
The application provides a pair of assembled building outer wall adopts following technical scheme:
the utility model provides an assembly type structure outer wall, includes outer wall body and connecting device, the outer wall body includes side fascia, concrete layer, interior wallboard and a plurality of framework of steel reinforcement, the side fascia with interior wallboard parallel arrangement, it is a plurality of the equal fixed connection of framework of steel reinforcement be in the side fascia with between the interior wallboard, it is a plurality of framework of steel reinforcement sets up along the direction interval of keeping away from ground, concrete layer is located the side fascia with between the interior wallboard, the framework of steel reinforcement part is buried underground in the concrete layer, concrete layer is close to one side of ground and sets up a plurality of spliced eye of wearing to establish connecting-bar element, coupling mechanism includes anchor assembly and coupling mechanism, anchor assembly is buried underground in the ground, and is a plurality of framework of steel reinforcement all with coupling mechanism connects, coupling mechanism with anchor assembly can dismantle the connection.
Through adopting above-mentioned technical scheme, be connected concrete layer and steel bar connection spare after, be connected coupling mechanism and pre-buried anchor assembly in the ground, be connected coupling mechanism and a plurality of steel bar framework again to reach the effect of further fixing to the outer wall body, improve the stability of being connected between outer wall body and the ground.
Optionally, coupling mechanism includes connecting rod, installation pole and multiunit coupling assembling, the connecting rod with anchor assembly can dismantle the connection, the coaxial cover of installation pole is established the outside of connecting rod, the installation pole with connecting rod sliding connection, multiunit coupling assembling all connects on the installation pole, the multiunit coupling assembling is with a plurality of the framework of steel reinforcement one-to-one sets up, coupling assembling includes installation piece, dead lever and first gag lever post, the installation piece with installation pole fixed connection, the dead lever fixed connection be in the installation piece is close to one side of framework of steel reinforcement, the perpendicular fixed connection of first gag lever post is in the dead lever is kept away from the one end of installation piece, first gag lever post is located the dead lever is close to one side on ground, first gag lever post with the framework of steel reinforcement is connected.
Through adopting above-mentioned technical scheme, establish the coaxial cover of installation pole in the outside of connecting rod, the connecting rod is connected the back with anchor assembly, rotates the installation pole and makes first gag lever post be located between two adjacent steel reinforcement frameworks, makes first gag lever post and steel reinforcement framework butt to the direction slidable mounting pole that is close to ground, utilizes first gag lever post to restrict the removal of steel reinforcement framework to improve the stability of being connected between outer wall body and the ground.
Optionally, wear to be equipped with the rack on the lateral wall that the dead lever was kept away from to the installation piece, rack and installation piece sliding connection, it is used for the gliding gear of limit strip to rotate in the installation piece to be connected with, the gear with rack toothing, the rack is kept away from the perpendicular fixedly connected with second gag lever post of one end of installation piece, it is connected with the dwang to rotate on the installation piece, the dwang with the coaxial fixed connection of gear.
Through adopting above-mentioned technical scheme, wear to establish the rack on the lateral wall of connecting the fixed block is kept away from to the installation piece, the perpendicular fixed connection second gag lever post of one end of installation piece is kept away from to the rack, when being connected first gag lever post and framework of steel reinforcement, the second gag lever post removes between the framework of steel reinforcement and the concrete layer on the adjacent building outer wall, the dwang rotates and drives the gear and rotates, thereby make the rack to the direction removal that is close to the installation piece, the rack removes the in-process and drives the second gag lever post to the direction removal that is close to the installation piece, the second gag lever post and the framework of steel reinforcement butt on the adjacent building outer wall, thereby link together two adjacent building outer walls, improve the holistic stability of assembled building.
Optionally, the first extension board of side fascia one end fixedly connected with, interior wallboard is kept away from the one end fixedly connected with second extension board of first extension board, first extension board and second extension board size equal.
Through adopting above-mentioned technical scheme, at the first extension board of wallboard one end fixed connection, keep away from the one end fixed connection second extension board of first extension board at interior wallboard, utilize the first extension board and the second extension board of adjacent building outer wall to enclose into the moulding box of pouring of connecting the stake, improve the efficiency of construction of assembled outer wall.
Optionally, the first extension plate is provided with a plurality of pouring holes.
Through adopting above-mentioned technical scheme, set up a plurality of filling holes on first extension board, through a plurality of filling holes simultaneously to pouring the mould incasement concreting, improve the fashioned degree of consistency of connecting pile.
Optionally, wear to be equipped with the grout pipe in the filling hole, the outer wall of grout pipe with the inner wall laminating of filling hole, the grout pipe with the dwang key-type connection, a plurality of grout outlets have been seted up on the lateral wall of grout pipe, grout outlet is located first extension board is close to one side of second extension board.
Through adopting above-mentioned technical scheme, wear to establish the grout pipe in the grout hole, the concrete gets into through seting up a plurality of grout outlets on the grout pipe lateral wall and pours the moulding box in, further improves the even degree that the concrete was poured.
Optionally, a plurality of filling holes correspond to a plurality of the rotating rods one to one, and the grouting pipe is connected with the rotating rod key.
Through adopting above-mentioned technical scheme, grout pipe and dwang key-type connection drive the dwang through rotating grout pipe and rotate, improve the convenience of workman's operation.
In order to alleviate the lower problem of stability of being connected between assembled outer wall and the ground, this application provides an assembled building outer wall.
The application provides a pair of assembled building outer wall adopts following technical scheme:
a construction method of an outer wall of an assembly type building mainly comprises the following steps:
step S1: installing an outer wall body;
step S2: the outer wall body is connected with the foundation;
step S3: the outer wall body is connected with the adjacent outer wall body;
step S4: and (5) pouring the connecting pile.
By adopting the technical scheme, the outer wall bodies are connected with the foundation by the connecting mechanism, and the two adjacent outer wall bodies are connected together, so that the connection stability between the assembled outer wall and the foundation is improved; through utilizing first extension board and second extension board to enclose into pouring the moulding box, improve the work efficiency of assembled outer wall installation.
In summary, the present application includes at least one of the following beneficial technical effects:
the connecting mechanism is connected to one side of the outer wall body, and after the concrete layer is connected with the steel bar embedded part on the foundation, the outer wall body is connected with the foundation and the adjacent outer wall body through the connecting mechanism, so that the connection stability between the outer wall body and the foundation is improved;
the first extension plate is fixedly connected to one end of the outer wall plate, the second extension plate is fixedly connected to one end, far away from the first extension plate, of the inner wall plate, and the first extension plate and the second extension plate of the adjacent building outer wall are used for enclosing to form a pouring mold box of the connecting pile, so that the construction efficiency of the fabricated outer wall is improved;
through set up a plurality of filling holes on first extension board, pour the concrete to pouring the mould incasement simultaneously through a plurality of filling holes, improve the fashioned degree of consistency of connecting pile.
Drawings
FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present application;
FIG. 2 is a schematic structural diagram of an exterior wall body in an embodiment of the present application;
FIG. 3 is a schematic structural view of a connecting device in an embodiment of the present application;
fig. 4 is a schematic flow chart of an embodiment of the present application.
Reference numerals: 100. an exterior wall body; 110. an external wall panel; 120. a concrete layer; 121. inserting holes; 130. an inner wall panel; 140. a steel reinforcement cage; 150. a first extension plate; 151. a perfusion hole; 160. a second extension plate; 200. a connecting device; 300. an anchoring member; 400. a connecting mechanism; 410. a connecting rod; 420. mounting a rod; 430. a connecting assembly; 431. mounting blocks; 432. fixing the rod; 433. a first limit rod; 434. a rack; 435. a second limiting rod; a gear; 436. rotating the rod; 437. and (7) grouting pipes.
Detailed Description
The present application is described in further detail below with reference to figures 1-4.
The embodiment of the application discloses an assembly type building outer wall. Referring to fig. 1, an assembled building exterior wall includes an exterior wall body 100, the exterior wall body 100 is installed on a steel bar embedded part pre-buried in a foundation, the exterior wall body 100 is connected with another adjacent exterior wall body 100 through a connecting device 200, and the connecting device 200 is fixedly connected with the foundation. Two adjacent outer wall bodies 100 are connected together through the connecting device 200, and meanwhile, the connecting device 200 is fixedly connected with the foundation, so that the connection stability between the outer wall bodies 100 and the foundation is improved.
Referring to fig. 1 and 2, the exterior wall body 100 includes an exterior wall panel 110, a plurality of reinforcing steel bar frameworks 140 are fixedly connected to a side wall of the exterior wall panel 110, a horizontal cross section of the reinforcing steel bar frameworks 140 is rectangular, a length direction of the reinforcing steel bar frameworks 140 is parallel to a length direction of the exterior wall panel 110, and the plurality of reinforcing steel bar frameworks 140 are arranged at equal intervals along a vertical direction. The side of the reinforcement cage 140 away from the outer wall panel 110 is fixedly connected with an inner wall panel 130, and the inner wall panel 130 is parallel to the outer wall panel 110. A concrete layer 120 is formed between the inner wall plate 130 and the outer wall plate 110 in a pouring manner, the concrete layer 120 is of a cuboid structure, and a plurality of inserting holes 121 for inserting the steel bar embedded parts are formed in the lower end of the concrete layer 120. The middle part of the steel reinforcement framework 140 is embedded in the concrete layer 120, and the two ends of the length direction of the steel reinforcement framework 140 protrude out of the two ends of the horizontal direction of the concrete layer 120.
One end of the external wall panel 110 in the horizontal direction is fixedly connected with a first extension panel 150, and the first extension panel 150 and the external wall panel 110 are integrally formed. The end of the inner wall panel 130 away from the first extension board 150 is fixedly connected with a second extension board 160, and the second extension board 160 is integrally formed with the inner wall panel 130. First extension board 150 and the outer wallboard 110 butt of adjacent outer wall body 100, interior wallboard 130 and the second extension board 160 butt of adjacent outer wall body 100, first extension board 150 and second extension board 160 enclose into the mould case of pouring of connecting the stake, do not need the staff to assemble the mould case of pouring of connecting the stake again after outer wall body 100 installation finishes, improve the installation effectiveness of outer wall.
Referring to fig. 2 and 3, the connection device 200 includes a connection mechanism 400 and an anchor 300 pre-buried in a foundation, the connection mechanism 400 includes a connection rod 410, the connection rod 410 is vertically disposed, and the connection rod 410 is in threaded connection with the anchor 300. The connecting rod 410 is coaxially sleeved with an installation rod 420, the installation rod 420 is in sliding connection with the connecting rod 410, the installation rod 420 is in clearance fit with the connecting rod 410, and the installation rod 420 can rotate relative to the connecting rod 410. A plurality of groups of connecting assemblies 430 are mounted on the mounting rod 420, the groups of connecting assemblies 430 are arranged at equal intervals along the length direction of the mounting rod 420, and the groups of connecting assemblies 430 correspond to the plurality of steel reinforcement cages 140 one to one.
The connection assembly 430 includes a mounting block 431, the mounting block 431 is fixedly connected to a sidewall of the mounting rod 420, and the mounting block 431 is located at a side of the mounting rod 420 adjacent to the first extension plate 150. One side of the installation block 431 close to the steel bar framework 140 is fixedly connected with a fixed rod 432, one end of the fixed rod 432 far away from the installation block 431 is vertically and fixedly connected with a first limiting rod 433, and the first limiting rod 433 is located below the fixed rod 432. A rack 434 penetrates through the side wall of the mounting block 431, which is far away from the first limiting rod 433, one end of the rack 434, which is far away from the mounting block 431, is vertically and fixedly connected with a second limiting rod 435, and the second limiting rod 435 is positioned below the rack 434; the rack 434 is connected with the installation block 431 in a sliding manner, a gear is connected in the installation block 431 in a rotating manner, the gear is meshed with the rack 434, a rotating rod 436 is connected on the installation block 431 in a rotating manner, the rotating rod 436 is fixedly connected with the gear in a coaxial manner, the rotating rod 436 is positioned on one side of the installation block 431 close to the first extension plate 150, and the rotating axis of the rotating rod 436 is perpendicular to the first extension plate 150.
Referring to fig. 2 and 3, after the concrete layer 120 is connected with the embedded steel bar part, the connecting rod 410 is in threaded connection with the anchoring part 300, the mounting rod 420 is rotated, so that the first limiting rod 433 is located on the inner side of the steel bar framework 140, the second limiting rod 435 is located on the inner side of the steel bar framework 140 of the adjacent outer wall body 100, the mounting rod 420 is installed in a downward sliding mode, so that the first limiting rod 433 is abutted to the end part of the steel bar framework 140, the rotating rod 436 is rotated, the second limiting rod 435 is moved towards the direction close to the mounting block 431 until the second limiting rod 435 is abutted to the steel bar framework 140 of the adjacent outer wall body 100. Thereby connecting two adjacent outer wall bodies 100 together and improving the installation stability of the outer wall bodies 100.
Referring to fig. 1 and 3, a plurality of filling holes 151 are opened in the first extension plate 150 along a vertical direction, and the plurality of filling holes 151 are disposed at equal intervals. A grouting pipe 437 penetrates through the pouring hole 151, and the side wall of the grouting pipe 437 is abutted against the inner wall of the pouring hole 151; a plurality of grout pipes 437 and many dwang 436 one-to-one set up, grout pipe 437 and dwang 436 key-type connection, after first gag lever post 433 and second gag lever post 435 respectively with two steel reinforcement framework 140 butts, the axis collineation of dwang 436 and the axis of pouring hole 151 will grout pipe 437 and dwang 436 key-type connection. A plurality of grout outlets are formed in the side wall of the grout pipe 437, and the grout outlets are arranged at equal intervals along the circumferential direction of the grout pipe 437. When the grout tube 437 is connected with the rotating rod 436, the grout outlet is located between the first extension plate 150 and the second extension plate 160. When the connecting pile is poured, concrete is poured into the pouring mold box through the grouting pipe 437, and the concrete enters the pouring mold box through a plurality of grout outlets formed in the side wall of the grouting pipe 437, so that the pouring uniformity of the concrete is improved. Grout pipe 437 and dwang 436 key-type connection drive dwang 436 through rotating grout pipe 437 and rotate, improve the convenience of workman's operation.
The implementation principle of an assembly type building outer wall of the embodiment of the application is as follows: by connecting the connecting mechanism 400 at one side of the outer wall body 100, after the concrete layer 120 is connected with the steel bar embedded part on the foundation, the outer wall body 100 is connected with the foundation and the adjacent outer wall body 100 by using the connecting mechanism 400, so that the connection stability between the outer wall body 100 and the foundation is improved.
The embodiment of the application also discloses a construction method of the outer wall of the fabricated building, which mainly comprises the following steps:
referring to fig. 1, 3, and 4, step S1: connecting an outer wall body 100 of the assembled outer wall with a steel bar embedded part on a foundation;
step S2: connecting the connecting rod 410 with the anchoring piece 300, rotating the installation pipe and sliding the installation pipe to the direction close to the ground, so that the first limiting rod 433 is abutted against the steel reinforcement framework 140 in the installed outer wall body 100, and the second limiting rod 435 is abutted against the steel reinforcement framework 140 in the adjacent outer wall body 100;
step S3: inserting a grouting pipe 437, connecting the grouting pipe 437 with the rotating rod 436 in a key manner, and rotating the grouting pipe 437 to enable the rotating rod 436 to rotate synchronously with the rotating rod, so that the second limiting rod 435 is tightly abutted against the steel reinforcement framework 140 in the adjacent outer wall body 100;
step S4: and pouring concrete into a pouring mold box formed by the first extension plate 150 and the second extension plate 160 through a grouting pipe 437 to form the connecting pile.
The implementation principle of an assembly type building outer wall of the embodiment of the application is as follows: by connecting the outer wall body 100 with the foundation and the adjacent outer wall body 100 by using the connecting device 200, the stability of connection between the outer wall body 100 and the foundation is improved, thereby improving the stability of the integral installation of the building outer wall.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (8)

1. The utility model provides an assembly type structure outer wall which characterized in that: the outer wall comprises an outer wall body (100) and a connecting device (200), wherein the outer wall body (100) comprises an outer wall plate (110), a concrete layer (120), an inner wall plate (130) and a plurality of steel reinforcement frameworks (140), the outer wall plate (110) and the inner wall plate (130) are arranged in parallel, the plurality of steel reinforcement frameworks (140) are fixedly connected between the outer wall plate (110) and the inner wall plate (130), the plurality of steel reinforcement frameworks (140) are arranged at intervals along the direction far away from the ground, the concrete layer (120) is positioned between the outer wall plate (110) and the inner wall plate (130), the steel reinforcement frameworks (140) are partially embedded in the concrete layer (120), one side of the concrete layer (120) close to the ground is provided with a plurality of splicing holes (121) for penetrating steel reinforcement connectors, and the connecting mechanism (400) comprises an anchoring piece (300) and a connecting mechanism (400), anchor member (300) are buried underground in the ground, and a plurality of steel reinforcement skeleton (140) all with coupling mechanism (400) are connected, coupling mechanism (400) with anchor member (300) can dismantle the connection.
2. The fabricated building exterior wall of claim 1, wherein: the connecting mechanism (400) comprises a connecting rod (410), an installation rod (420) and a plurality of groups of connecting assemblies (430), the connecting rod (410) and the anchoring piece (300) are detachably connected, the installation rod (420) is coaxially sleeved outside the connecting rod (410), the installation rod (420) is in sliding connection with the connecting rod (410), the groups of connecting assemblies (430) are connected to the installation rod (420), the groups of connecting assemblies (430) are in one-to-one correspondence with the steel reinforcement frameworks (140), each connecting assembly (430) comprises an installation block (431), a fixed rod (432) and a first limiting rod (433), the installation block (431) is fixedly connected with the installation rod (420), the fixed rod (432) is fixedly connected to one side, close to the steel reinforcement frameworks (140), of the installation block (431), and the first limiting rod (433) is vertically and fixedly connected to one end, far away from the installation block (431), of the fixed rod (432), the first limiting rod (433) is located on one side, close to the ground, of the fixing rod (432), and the first limiting rod (433) is connected with the steel reinforcement framework (140).
3. The fabricated building exterior wall of claim 2, wherein: wear to be equipped with rack (434) on the lateral wall of dead lever (432) is kept away from to installation piece (431), rack (434) and installation piece (431) sliding connection, installation piece (431) internal rotation is connected with and is used for the gliding gear of limit strip, the gear with rack (434) meshing, rack (434) are kept away from the perpendicular fixedly connected with second gag lever post (435) of one end of installation piece (431), it is connected with dwang (436) to rotate on installation piece (431), dwang (436) with the coaxial fixed connection of gear.
4. The fabricated building exterior wall of claim 3, wherein: the utility model discloses a wall panel, including outer wallboard (110), one side fixedly connected with extends board (150), one side fixedly connected with second extension board (160) of first extension board (150) are kept away from to interior wallboard (130), first extension board (150) and second extension board (160) size are equal.
5. The fabricated building exterior wall of claim 4, wherein: the first extension plate (150) is provided with a plurality of pouring holes (151).
6. The fabricated building exterior wall of claim 5, wherein: grout pipe (437) wear to be equipped with in pouring hole (151), the outer wall of grout pipe (437) with the inner wall laminating of pouring hole (151), grout pipe (437) with dwang (436) key-type connection, a plurality of grout outlets have been seted up on the lateral wall of grout pipe (437), grout outlet is located first extension board (150) are close to one side of second extension board (160).
7. The fabricated building exterior wall of claim 6, wherein: the plurality of the pouring holes (151) correspond to the plurality of the rotating rods (436) one by one, and the grouting pipes (437) are connected with the rotating rods (436) in a key mode.
8. A construction method of an exterior wall of a fabricated building according to any one of claims 1-7, mainly comprising the steps of:
step S1: installing an outer wall body (100);
step S2: the outer wall body (100) is connected with the foundation;
step S3: the outer wall body (100) is connected with the adjacent outer wall body (100);
step S4: and (5) pouring the connecting pile.
CN202111612925.8A 2021-12-27 2021-12-27 Assembly type building outer wall and construction method Active CN114135023B (en)

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CN114562066A (en) * 2022-04-26 2022-05-31 龙信集团江苏建筑产业有限公司 Assembled concrete wallboard steel construction connecting device
CN117868315B (en) * 2024-03-11 2024-05-03 中国二十二冶集团有限公司 High-strength steel bar mechanical anchoring device for heat-insulating wall

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