CN210713601U

CN210713601U - PCF corner board of prefabricated building

Info

Publication number: CN210713601U
Application number: CN201921323659.5U
Authority: CN
Inventors: 张思明; 刘俊东; 范阿龙; 刘海豹
Original assignee: Tianjin Shengyuan Assembly Building Co Ltd
Current assignee: Tianjin Shengyuan Assembly Building Co Ltd
Priority date: 2019-08-15
Filing date: 2019-08-15
Publication date: 2020-06-09
Anticipated expiration: 2029-08-15

Abstract

The utility model relates to a PCF corner board of prefabricated building. The outer blade plate is L-shaped in cross section and internally provided with an inner rib net; an inner heat insulation plate made of foamed polyurethane is arranged on the inner side of the outer leaf plate, and the section of the inner heat insulation plate is L-shaped; the outer side of the top of the outer blade plate is provided with a top outward notch, and the outer side of the bottom of the outer blade plate is provided with a bottom embedded convex edge; the inner rib net is obtained by welding L-shaped transverse reinforcing steel bars and straight longitudinal reinforcing steel bars, a plurality of glass fiber ribs are further arranged on the inner rib net, the length direction of each glass fiber rib is perpendicular to the plane of the inner rib net, the outer end of each glass fiber rib is positioned in the outer leaf plate, and the inner end of each glass fiber rib is positioned in the inner heat insulation plate; the top of the outer leaf plate is provided with a first top hanging ring and a second top hanging ring, and one side edge of the outer leaf plate is provided with a first side hanging ring and a second side hanging ring. The PCF corner plate of the prefabricated building has the advantages of simple structure, convenience in construction, small occupied area and flat surface.

Description

PCF corner board of prefabricated building

Technical Field

The utility model belongs to the technical field of the assembly type structure, especially, relate to a PCF corner board of assembly type structure.

Background

Buildings assembled from prefabricated parts at the site are called fabricated buildings. In recent years, with the progress of building technology and the development of building concepts, the fabricated building has been popularized with its many advantages. 1. A large number of building parts are produced and processed in a workshop, and a large number of assembly operations are performed on site, so that the number of the assembly operations is greatly reduced compared with the original cast-in-place operation; 2. the building and decoration integrated design and construction are adopted, and the ideal state is that decoration can be synchronously carried out along with the main body construction; 3. standardization of design and informatization of management, the more standard the component is, the higher the production efficiency is, the lower the corresponding component cost will be, and the cost performance of the whole fabricated building is higher and higher in cooperation with digital management of a factory; 4. the requirement of green buildings is met; 5. energy conservation and environmental protection. With the deepening of the technology and the environmental protection concept, the assembled building has wider development prospect.

The PCF plate (prefabricated panel) is one of important parts in the prefabricated building, the structural steel bars of the inner layer of the wall body are arranged in the building construction, then the PCF plate is arranged and installed on the outer side, then the inner layer wall body is cast in place, the heat insulation layer is arranged between the inner wall body and the outer wall body, the whole building outer wall is obtained after casting forming, in the casting construction process, the PCF plate positioned on the outer side plays a role of casting a template, meanwhile, because the PCF plate is prefabricated in a factory, the outer vertical surface of the PCF plate can be processed to be tidy and beautiful, and the beautiful effect of the prefabricated building is improved.

The position difficult to construct in the fabricated building is the corner transition of the PCF plate, and the existing processing mode is to build a structural steel bar at the junction of the PCF plate and adopt a cast-in-place process to construct or arrange a prefabricated column component at the corner and connect the PCF plate with the prefabricated column component. The difficulty of construction in the former mode is greatly improved, and the construction speed is reduced; in the latter mode, the structural dimension of the prefabricated column member is generally larger than the thickness of the PCF plate, so that the prefabricated column member occupies a large area after construction and causes an uneven wall body. Therefore, it is necessary to develop and design a prefabricated structural member for the corner position of the PDF board to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model provides a PCF corner plate of simple structure, construction of being convenient for, area is little and surfacing's prefabricated building for solving the technical problem that exists among the well-known art.

The utility model discloses a solve the technical scheme that technical problem that exists among the well-known technique took and be: the PCF corner plate of the fabricated building comprises an outer blade plate made of concrete and positioned on the outer side, wherein the section of the outer blade plate is L-shaped, and an inner rib net is arranged inside the outer blade plate; an inner heat insulation plate made of foamed polyurethane is arranged on the inner side of the outer leaf plate, and the section of the inner heat insulation plate is L-shaped; the outer side of the top of each outer blade plate is provided with a top outward notch, the outer side of the bottom of each outer blade plate is provided with a bottom embedded convex edge, and when the PCF corner plates are stacked in the vertical direction, the bottom embedded convex edge of the previous outer blade plate falls into the top outward notch of the next outer blade plate; the inner rib net is obtained by welding L-shaped transverse reinforcing steel bars and straight longitudinal reinforcing steel bars, a plurality of glass fiber ribs are further arranged on the inner rib net, the length direction of each glass fiber rib is perpendicular to the plane of the inner rib net, the outer end of each glass fiber rib is positioned in the outer leaf plate, and the inner end of each glass fiber rib is positioned in the inner heat insulation plate; the top of the outer leaf plate is provided with a first top hanging ring and a second top hanging ring, and one side edge of the outer leaf plate is provided with a first side hanging ring and a second side hanging ring.

The utility model has the advantages that: the utility model provides a PCF corner board of assembly type structure that structural design is simple reasonable through providing a prefabricated corner board subassembly, has solved the connection problem between the PCF board of two adjacent corner positions in the current assembly type structure construction. The whole PCF corner plate is self-formed into a unit, so that the integral transportation, hoisting, installation and construction are very convenient. Through set up interior heated board and set up a plurality of glass fiber muscle between outer lamina and interior heated board in the inboard, guaranteed the reliability of being connected between outer lamina and the interior heat preservation when making this PCF corner board self possess the heat preservation ability, avoid taking place to break away from and the problem of droing in the work progress and the cycle that assembled building exists, guaranteed the thermal insulation performance of building. Set up the outside notch in top, bottom through the top at outer leaf plate and set up bottom gomphosis bead and set up profile shape between them and suit, a plurality of this PCF corner boards can pile up the suitability of putting things in good order and can guaranteeing the junction during the messenger construction, provide the convenience degree of construction and effectively guaranteed the planarization of the outer facade of construction back wall. Through set up a plurality of rings at top and lateral part, make whole PCF corner board be convenient for hoist and mount, the design of a plurality of hoisting points makes the hoist and mount process more stable, and the work progress is more controllable.

Preferably: the top of the outer blade plate is provided with a plurality of top inserting rods, the central line of each top inserting rod is parallel to the length direction of the outer blade plate, the bottom of the outer blade plate is provided with a plurality of bottom inserting sleeves, and the central line of each bottom inserting sleeve is collinear with the central line of each top inserting rod.

Preferably: the top inserted link is a round steel section, and the lower end of the top inserted link is welded and fixed with the inner rib net; the bottom plug bush is a metal pipe section with the upper end sealed, the cross section is oval, and the upper end of the bottom plug bush is welded and fixed with the inner rib net.

Preferably: the top first hanging ring, the top second hanging ring, the side first hanging ring and the side second hanging ring are all in a shape like a Chinese character ji and are formed by bending the same steel bar section; the lower parts of the first top hanging ring and the second top hanging ring and the inner parts of the first side hanging ring and the second side hanging ring are welded and fixed with the inner rib net.

Preferably: the first top hanging ring and the second top hanging ring are respectively positioned in the middle of two sides of the top of the outer blade, and the first side hanging ring and the second side hanging ring are respectively positioned in the middle upper part and the middle lower part of the side edge of the outer blade.

Preferably: the L-shaped transverse steel bars of the inner rib net are made by bending the same steel bar section, the L-shaped transverse steel bars of the inner rib net are positioned at the outer side, and the straight longitudinal steel bars are positioned at the inner side.

Preferably: the PCF corner plate is characterized in that a plurality of flat-hanging embedded parts are respectively arranged on two plate bodies of the PCF corner plate, the flat-hanging embedded parts are sleeves with internal threads, the middle parts of the flat-hanging embedded parts are fixedly welded with the inner rib net, the outer ends of the flat-hanging embedded parts are parallel and level to the outer vertical surfaces of the outer blade plates, the inner ends of the flat-hanging embedded parts are parallel and level to the inner vertical surfaces of the inner insulation plates, and the central lines of the flat-hanging embedded parts.

Preferably: on the two plate bodies of the PCF corner plate, the length of the outer leaf plate is greater than that of the inner heat-insulation plate.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic view of the reinforcement structure of the present invention;

FIG. 3 is a perspective structural view of the present invention;

fig. 4 is a schematic top view of the present invention;

FIG. 5 is a schematic view of the cross-sectional structure C-C of FIG. 1;

fig. 6 is a schematic cross-sectional structure of the present invention;

FIG. 7 is an enlarged schematic view of portion A of FIG. 3;

fig. 8 is an enlarged structural view of a portion B in fig. 3.

In the figure: 1. an outer leaf plate; 1-1, a notch with the top outward; 1-2, embedding a convex rib at the bottom; 2. an inner insulation board; 3. a first lifting ring at the top; 4. a second lifting ring at the top; 5. a first hanging ring at the side part; 6. a glass fiber rib; 7. horizontally hoisting an embedded part; 8. a second hanging ring at the side part; 9. an inner rib net; 10. a top plunger; 11. and a bottom plug bush.

Detailed Description

In order to further understand the contents, features and effects of the present invention, the following embodiments are described in detail:

referring to fig. 1, 2 and 3, the PCF corner plate of the prefabricated building of the present invention comprises an outer leaf plate 1 made of concrete located at the outer side, wherein the cross section of the outer leaf plate 1 is L-shaped and an inner rib net 9 is arranged inside the outer leaf plate; an inner heat insulation board 2 made of foaming polyurethane is arranged on the inner side of the outer leaf board 1, and the section of the inner heat insulation board 2 is L-shaped.

The inner rib net 9 is used as an internal structure framework of the outer blade plate 1, and the outer blade plate 1 is integrally cast on the inner rib net 9 by adopting concrete for molding. The inner rib net 9 is obtained by welding L-shaped transverse steel bars and straight longitudinal steel bars. In this embodiment, the L-shaped transverse steel bar of the inner mesh 9 is made by bending the same steel bar section, and the L-shaped transverse steel bar of the inner mesh 9 is located on the outer side and the straight longitudinal steel bar is located on the inner side.

Referring to fig. 3, 7 and 8, a top outward notch 1-1 is formed on the outer side of the top of the outer leaf plate 1, and a bottom engaging rib 1-2 is formed on the outer side of the bottom of the outer leaf plate 1, which are integrally formed on the outer leaf plate 1, and as seen from the enlarged cross-sectional structure shown in fig. 7 and 8, the top outward notch 1-1 and the bottom engaging rib 1-2 have the same contour and shape, so that the mating and butt-jointing connection can be realized. The PCF corner plate is stacked in the vertical direction during construction, so that the bottom embedded convex edge 1-2 of the previous outer leaf plate 1 falls into the top outward notch 1-1 of the next outer leaf plate 1, and the sealing performance of the joint is ensured by grouting in the gap between the bottom embedded convex edge 1-2 and the top outward notch.

Referring to fig. 2 and fig. 2, a plurality of glass fiber ribs 6 are further disposed on the inner rib net 9, the length direction of each glass fiber rib 6 is perpendicular to the plane of the inner rib net 9, the outer end of each glass fiber rib 6 is located in the outer leaf plate 1, and the inner end of each glass fiber rib 6 is located in the inner heat insulation plate 2. The effect of each glass fiber muscle 6 is that the structural strength who is connected between assurance outer lamina plate 1 and the interior heat preservation 2, be equivalent to the crab-bolt, one end is pour in outer lamina plate 1's concrete body, the other end foams in interior heat preservation 2, accomplish outer lamina plate 1 and interior heat preservation 2 multiple spot fixed connection between the two, consequently in the work progress and the whole continuation of existence period of assembled building, keep inseparable connection between interior heat preservation 2 and the outer lamina plate 1, be difficult for droing, guarantee the heat preservation effect.

The glass fiber reinforcement 6 is a commercially available part and is one of fiber reinforced composite materials, and the fiber reinforced composite material is a material formed by high-performance fibers, a synthetic resin matrix and a curing agent by adopting a proper molding process; the high-performance fiber is used as a reinforcing material, and the synthetic resin is used as a matrix material. The fiber has high tensile strength, is a main provider of the strength of the fiber reinforced composite material, mainly plays a role in bearing load, and is mainly divided into carbon fiber, aramid fiber, basalt fiber, glass fiber and the like. The matrix material has the functions of bonding and transferring shear force, and the physical properties of the matrix material can influence the physical properties of the fiber reinforced material.

As shown in the figure, the plurality of glass fiber ribs 6 are arranged on the two side plate bodies of the PCF corner plate in a matrix manner, specifically, the position of each glass fiber rib 6 has no specific requirement, and the glass fiber ribs 6 are arranged at multiple points due to the function of connection, however, it is conceivable that the plurality of glass fiber ribs 6 are arranged in an orderly matrix manner as shown in the figure, which is helpful to ensure the standardization of the production of the PCF corner plate component and is easier to realize the quality control.

In the production process, a plurality of glass fiber reinforcements 6 are tightly bound and fixed on the inner reinforcement net 9 by adopting metal binding wires, and are positioned by adopting necessary positioning pieces, and then concrete is poured.

The top of the outer leaf plate 1 is provided with a first top hanging ring 3 and a second top hanging ring 4, and one side edge of the outer leaf plate 1 is provided with a first side hanging ring 5 and a second side hanging ring 8. The four hoisting rings are used for hoisting the PCF corner plate part, which is equivalent to that two hoisting points are respectively arranged at the top and the side part, and when the hoisting is moved, two slings can be adopted from the top for hoisting (vertical hoisting), and two slings can be adopted from the side part for hoisting (horizontal hoisting).

In the embodiment, the top first hanging ring 3, the top second hanging ring 4, the side first hanging ring 5 and the side second hanging ring 8 are all in a shape like a Chinese character 'ji', and are formed by bending the same steel bar section; the lower parts of the first top hanging ring 3 and the second top hanging ring 4 and the inner parts of the first side hanging ring 5 and the second side hanging ring 8 are welded and fixed with the inner rib net 9. Further, the first top hanging ring 3 and the second top hanging ring 4 are respectively located at the middle positions of two sides of the top of the outer leaf plate 1, and the first side hanging ring 5 and the second side hanging ring 8 are respectively located at the middle upper part and the middle lower part of the side edge of the outer leaf plate 1.

Referring to fig. 2 and 3, it can be seen that: the end parts of the first top hanging ring 3, the second top hanging ring 4, the first side hanging ring 5 and the second side hanging ring 8 are all provided with hooks, hook parts can be hooked on L-shaped transverse steel bars and straight longitudinal steel bars of the inner rib net 9, and can also be not hooked with the inner rib net 9 and only depend on welding fixation, when hooking connection is generated, the strength of combination between the hanging rings and the outer leaf plate 1 is effectively improved, and the falling-off is effectively prevented.

Considering that the height dimension of the PCF corner plate part is far larger than the width dimension, the lifting movement in the vertical lifting mode is more stable than the transverse lifting mode. Therefore, in this embodiment, a plurality of flat-hanging embedded parts 7 are respectively arranged on two plate bodies of the PCF corner plate, the flat-hanging embedded parts 7 are sleeves with internal threads, the middle parts of the flat-hanging embedded parts 7 are welded and fixed with the inner rib net 9 (can be welded and fixed on the L-shaped transverse steel bars or the flat longitudinal steel bars, or can be welded at the intersection position of the two), the outer ends of the flat-hanging embedded parts are flush with the outer vertical surface of the outer blade plate 1, the inner ends of the flat-hanging embedded parts are flush with the inner vertical surface of the inner insulation plate 2, and the central lines of the flat-hanging embedded parts 7 are perpendicular. As shown in fig. 3, an upper, a middle and a lower three flat-hanging embedded parts 7 are respectively arranged on the plate body of each PCF corner plate, and in order to ensure the stability of the hanging, the center lines of the three flat-hanging embedded parts 7 are on the same vertical plane. When transversely hoisting this PCF scute, two hoist cables are connected the first rings 5 of lateral part and lateral part second rings 8, three hoist cables are connected to three flat built-in fitting 7 that hangs on the same plate body of this PCF scute respectively through the connecting piece in addition, be connected to the edge and do not set up on the three flat built-in fitting 7 that hangs on the plate body of rings, the connecting piece is the double-screw bolt of being connected with the hoist cable, during the use double-screw bolt swivelling joint is in the flat built-in fitting 7 that hangs, easy dismounting, the efficiency of promotion hoist and mount operation when guaranteeing connection stability. During transverse hoisting, three hoisting points are additionally arranged outside the two hoisting points of the first hoisting ring 5 on the side part and the second hoisting ring 8 on the side part, so that the stability during hoisting movement is ensured.

Referring to fig. 4 and 5, a plurality of top inserting rods 10 are arranged at the top of the outer leaf plate 1, the central line of each top inserting rod 10 is parallel to the length direction of the outer leaf plate 1, a plurality of bottom inserting sleeves 11 are arranged at the bottom of the outer leaf plate 1, and the central line of each bottom inserting sleeve 11 is collinear with the central line of each top inserting rod 10. During construction, the PCF corner plates are stacked, and the top inserting rod 10 positioned below is inserted into the bottom inserting sleeve 11 positioned above, so that the upper PCF corner plate and the lower PCF corner plate are in butt joint connection.

In the embodiment, the top inserted link 10 is a round steel section, the lower end of the top inserted link is welded and fixed with the inner rib net 9, and the top inserted link and the inner rib net are integrally cast in a concrete body of the outer blade plate 1; the bottom plug bush 11 is a metal pipe section with a sealed upper end, the cross section is oval, the upper end of the bottom plug bush 11 is welded and fixed with the inner rib net 9, and the bottom plug bush and the inner rib net are integrally poured in a concrete body of the outer blade plate 1. The effect of designing the bottom plug bush 11 into the elliptical cross section is to leave enough plugging allowance for each top plug rod 10, and is limited to factors such as machining precision, and the like, and the center line of the bottom plug bush 11 cannot be strictly guaranteed to be completely collinear with the center line of each top plug rod 10, so that a certain deviation exists, and the shape design of the elliptical cross section enables each top plug rod 10 to be smoothly inserted into the corresponding bottom plug bush 11.

In this embodiment, on the two plate bodies of the PCF corner plate, the length of the outer leaf plate 1 is greater than the length of the inner insulation plate 2, as can be seen from fig. 4 to 6. Further, the distance between the outer edge of the outer blade plate 1 and the outer edge of the inner heat-insulation plate 2 is 3-5cm, preferably 4 cm.

The production process of the PCF corner plate comprises the following steps:

welding and forming a plurality of L-shaped transverse reinforcing steel bars and straight longitudinal reinforcing steel bars to obtain an inner rib net 9; a top first hanging ring 3, a top second hanging ring 4, a side first hanging ring 5 and a side second hanging ring 8 are welded and installed at corresponding positions on an inner rib net 9, a plurality of top inserted rods 10 and a plurality of bottom inserted sleeves 11 are welded and installed, a plurality of flat-hanging embedded parts 7 are welded and installed (the accessories need to have enough position accuracy during welding and installation, and therefore need an auxiliary positioning tool for positioning), and a plurality of glass fiber ribs 6 are bound and fixed at corresponding positions on the inner rib net 9 (the positioning tool is also used for positioning); then, placing the components in a pouring mould and fixing, introducing concrete into the mould and vibrating to obtain an outer blade plate 1 after molding; and then arranging a foaming mould on the inner wall of the outer blade plate 1 and foaming a foaming polyurethane material on the inner wall to obtain the inner heat-insulating layer 2.

The construction process of the PCF corner plate comprises the following steps:

the PCF corner plate is conveyed to a construction site of an assembly type building by adopting a hoisting facility and a transportation facility, the PCF corner plate is hoisted to a specified installation position by adopting a hoisting tool, necessary support is carried out by adopting a support rod and the like, and two hoisting rings at the top and two hoisting rings at the side part are cut and removed; the PCF plates are installed on two sides of the PCF corner plate in a butt joint mode to form a wall surface, and a plurality of PCF corner plates are stacked to the height of the wall body; during stacking, the top inserting rod 10 of the next PCF corner plate is inserted into the bottom inserting sleeve 11 of the previous PCF corner plate, grouting is performed in the gaps between the PCF plates and the PCF corner plate and between two adjacent PCF corner plates in a manual or mechanical mode, and the gaps are sealed after the slurry is hardened. When the inner wall needs to be formed, the structural steel bars of the inner wall need to be arranged on the inner side, then the inner wall is formed through cast-in-place, and the PCF corner plate is equivalent to an external casting template at the corner position.

Claims

1. A PCF corner plate of an assembly type building is characterized in that: comprises an outer blade plate (1) which is positioned at the outer side and made of concrete, wherein the section of the outer blade plate (1) is L-shaped, and an inner rib net (9) is arranged inside the outer blade plate; an inner heat insulation plate (2) made of foamed polyurethane is arranged on the inner side of the outer leaf plate (1), and the section of the inner heat insulation plate (2) is L-shaped; the outer side of the top of each outer leaf plate (1) is provided with a top outward notch (1-1), the outer side of the bottom of each outer leaf plate is provided with a bottom embedding convex edge (1-2), and when the PCF corner plates are stacked in the vertical direction, the bottom embedding convex edge (1-2) of the previous outer leaf plate (1) falls into the top outward notch (1-1) of the next outer leaf plate (1); the inner rib net (9) is obtained by welding L-shaped transverse steel bars and straight longitudinal steel bars, a plurality of glass fiber ribs (6) are further arranged on the inner rib net (9), the length direction of each glass fiber rib (6) is perpendicular to the plane of the inner rib net (9), the outer end of each glass fiber rib (6) is positioned in the outer leaf plate (1), and the inner end of each glass fiber rib is positioned in the inner heat-insulation plate (2); the top of the outer leaf plate (1) is provided with a first top hanging ring (3) and a second top hanging ring (4), and one side edge of the outer leaf plate (1) is provided with a first side hanging ring (5) and a second side hanging ring (8).

2. The PCF corner plate of a prefabricated building of claim 1, wherein: the top of the outer leaf plate (1) is provided with a plurality of top inserting rods (10), the central line of each top inserting rod (10) is parallel to the length direction of the outer leaf plate (1), the bottom of the outer leaf plate (1) is provided with a plurality of bottom inserting sleeves (11), and the central line of each bottom inserting sleeve (11) is collinear with the central line of each top inserting rod (10).

3. The PCF corner plate of a prefabricated building of claim 2, wherein: the top inserted bar (10) is a round steel section, and the lower end of the top inserted bar is welded and fixed with the inner rib net (9); the bottom plug bush (11) is a metal pipe section with the upper end sealed, the cross section is oval, and the upper end of the bottom plug bush (11) is welded and fixed with the inner rib net (9).

4. The PCF corner plate of a prefabricated building of claim 1, wherein: the top first hanging ring (3), the top second hanging ring (4), the side first hanging ring (5) and the side second hanging ring (8) are all in a shape like a Chinese character 'ji', and are formed by bending the same steel bar section; the lower parts of the first top hanging ring (3) and the second top hanging ring (4), the first side hanging ring (5) and the second side hanging ring (8) are welded and fixed with the inner rib net (9).

5. The PCF corner plate of a prefabricated building of claim 4, wherein: the first top hanging ring (3) and the second top hanging ring (4) are respectively located in the middle of two sides of the top of the outer leaf plate (1), and the first side hanging ring (5) and the second side hanging ring (8) are respectively located in the middle upper portion and the middle lower portion of the edge of the side of the outer leaf plate (1).

6. The PCF corner plate of a prefabricated building of any one of claims 1 to 5, wherein: the L-shaped transverse steel bars of the inner rib net (9) are made by bending the same steel bar section, the L-shaped transverse steel bars of the inner rib net (9) are positioned on the outer side, and the straight longitudinal steel bars are positioned on the inner side.

7. The PCF corner plate of a prefabricated building of any one of claims 1 to 5, wherein: a plurality of horizontal hanging embedded parts (7) are respectively arranged on two plate bodies of the PCF corner plate, the horizontal hanging embedded parts (7) are sleeves with internal threads, the middle parts of the horizontal hanging embedded parts are welded and fixed with the inner rib net (9), the outer ends of the horizontal hanging embedded parts are parallel and level to the outer vertical surfaces of the outer leaf plates (1), the inner ends of the horizontal hanging embedded parts are parallel and level to the inner vertical surfaces of the inner heat insulation plates (2), and the central lines of the horizontal hanging embedded parts (7) are perpendicular to the plane of the inner rib net (9).

8. The PCF corner plate of a prefabricated building of any one of claims 1 to 5, wherein: on the two plate bodies of the PCF corner plate, the length of the outer leaf plate (1) is greater than that of the inner heat-insulation plate (2).