CN210679912U

CN210679912U - High-performance assembled combined external wallboard

Info

Publication number: CN210679912U
Application number: CN201921090331.3U
Authority: CN
Inventors: 潘金龙; 王静远
Original assignee: Nanjing Bikasi Construction Technology Co ltd; Southeast University
Current assignee: Nanjing Bikasi Construction Technology Co ltd; Southeast University
Priority date: 2019-07-12
Filing date: 2019-07-12
Publication date: 2020-06-05
Anticipated expiration: 2029-07-12

Abstract

The utility model discloses a high performance assembled combination external wallboard, this application wallboard main part divide into the three-layer: the decorative layer is made of a colored high-ductility cement-based composite material, the heat-insulating layer is made of foamed concrete, the structural layer is made of light ceramsite or non-fired light aggregate concrete, and the wall board is light in self weight. Adopt spacing nodal connection that slides between wallboard and the major structure, the influence of major structure to hanging the wallboard under the reducible earthquake. The high-ductility cement-based composite material of the decorative protective layer has high tensile strength, good ductility and excellent crack control performance, and the color of the composite material can be customized individually. The dovetail grooves are formed in the interfaces of different layers of the wall board, and the layers of the wall body are connected through the connecting keys with the branches and the wing corners, so that the integrity of the wall body is improved. The utility model relates to a combination wallboard heat preservation energy-conservation, light weight are high-strength, the durability is good, can realize the decoration-heat preservation-structure integration of wallboard, have wide application prospect.

Description

High-performance assembled combined external wallboard

The technical field is as follows:

the utility model belongs to the building engineering technique especially relates to a high performance assembled combination externally hung wallboard and structural connection method.

Background art:

the traditional building exterior wall is generally divided into several forms, such as a light building block exterior wall, a concrete sandwich combined wallboard, a curtain wall (materials are usually glass, marble, high-performance concrete and the like), and the like. The light building block outer wall is mostly treated by external heat insulation or internal heat insulation, and the building treated by the external heat insulation has higher requirement on the durability of heat insulation materials and poorer fireproof performance; the adoption of the internal heat preservation treatment can cause the phenomenon that the wall body is corroded due to the fact that the condensation and the moisture are easily generated due to the overlarge indoor and outdoor temperature difference, the masonry structure is complex in construction and multiple in working procedures, the brought labor cost is high, and the requirement of the development of the times is difficult to adapt. The concrete sandwich combined wallboard generally adopts a structural form of concrete, a heat insulation layer and concrete, and because the concrete has inherent brittleness characteristics of poor toughness, low tensile strength, weak impact resistance, easy cracking, difficulty in controlling cracks after cracking and the like, if the width of the cracks is not controlled, the appearance of an outer wall is influenced, the durability of the structure is caused, and the potential safety hazard is caused. The curtain wall made of glass, marble, high-performance concrete and other materials is poor in heat insulation performance, and the glass, the marble and other materials are brittle materials which are easy to break, so that the glass, the marble and other materials are easier to damage in construction, installation and use stages compared with traditional materials.

Along with the progress of the society, the demand of the construction industry on modular prefabrication and processing of components is more and more urgent, the requirement is that standardized classification can be carried out on structural components, prefabrication and processing are carried out in factories, and assembly is carried out on a construction site, so that the construction period of engineering construction can be greatly shortened, and the engineering quality and the refinement degree are correspondingly improved. The development of the assembly type building aims to promote the standardization and industrialization of the building industry, improve the engineering quality, improve the engineering environment, reduce the pollution, reduce the instability of the construction quality and reduce the labor burden, and is a necessary trend of social and economic development.

Therefore, under the background, an assembled high-performance building outer wall which is convenient to manufacture and install, high in integration degree of decoration-heat preservation-structure, capable of realizing accurate prefabrication in factories and convenient to install on site is urgently needed.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: aiming at the problems in the prior art, the high-performance assembled combined external wallboard is provided.

The technical scheme is as follows: a high-performance assembled combined external wallboard comprises an internal structure layer, a heat insulation layer and a decorative protection layer which are sequentially overlapped, wherein the internal structure layer is made of lightweight concrete, the heat insulation layer is made of foamed concrete, and the decorative protection layer is made of a colorful high-ductility cement-based composite material; the internal structure layer, the heat insulation layer and the decorative protective layer are connected together through connecting pieces.

The strength of the lightweight concrete serving as an internal structural layer is greater than 25MPa, the thickness of the lightweight concrete is 80mm, the thickness of the foamed concrete serving as a heat insulation layer is 50mm-100mm, the design is carried out according to the heat insulation requirement of the wall, and the thickness of the colored high-ductility cement-based composite material serving as a decorative protective layer is 50 mm.

Furthermore, the connecting piece is formed by pressing a Q235 steel plate, one end of the pressed steel plate is forked, each end part is provided with a convex wing corner, and one end of the forked pressed steel plate is provided with an FRP (fiber reinforced plastic) material wrapping layer and is embedded in the decorative protective layer. The FRP wrapping layer comprises the following steps: the fiber is made by winding the surface of a steel plate and then soaking the steel plate into resin, wherein the fiber is carbon fiber or basalt fiber. Through the convex wing angle, the tensile resistance of reinforcing connecting piece pulls out, improves the wholeness and the security of wallboard.

Furthermore, the middle part of the pressed steel plate is also sleeved with a plastic lantern ring for positioning. The width of the plastic lantern ring is larger than or equal to that of the end part, and the plastic lantern ring is arranged in the middle of the connecting piece to play a role in positioning.

The external wallboard is connected with the main structure's connected node adopts spacing node connection that slides, and the concrete way is: arranging an outward protruding bracket at the lower part of the externally hung wallboard, connecting the bracket embedded part embedded in the bracket with a vertical adjusting bolt with freely adjustable height, and then supporting the vertical adjusting bolt on the main body structure; the horizontal load that external wallboard bore links to each other with the major structure through the pre-buried bolt of pre-burying in the wallboard, specifically connects through the angle steel of seting up vertical slotted hole for the wallboard can slide in vertical spacing, and a rubber circle is sheathe in on the pre-buried bolt surface, can produce certain horizontal displacement through the extrusion rubber circle. The main structure is like a frame beam in the schematic drawing.

When the externally-hung wallboard is installed, gaps are reserved between the upper wallboard and the lower wallboard and between the wallboard and the main structure, and waterproof materials are filled in the gaps; the left wallboard and the right wallboard are connected together through waterproof sealant, a foam PE rod, a fireproof joint material and a vertical drainage groove in a pouring way. The waterproof material and the waterproof sealant can adopt one or more building sealants of silicone, polysulfide, polyurethane and acrylic acid.

And the interface among the internal structure layer, the heat insulation layer and the decorative protective layer is provided with a toothed dovetail groove to enhance the interface biting force.

Between inner structure layer and the heat preservation, all be equipped with the reinforcing bar net between heat preservation and the decoration protective layer.

In summary, the decorative protective layer of the main body part of the wall panel of the utility model adopts colorful high-ductility cement-based composite material, the material of the heat-insulating layer adopts foamed concrete, and the internal structure layer adopts light ceramsite concrete or baking-free light aggregate concrete; the three parts are connected into a whole through the heat-insulating connecting piece wrapped by the FRP material and the mechanical biting force among the three parts. The connecting nodes of the external wall board and the main structure are connected by adopting limiting sliding nodes; when the wall panel is installed, gaps are reserved between the upper wall panel and the lower wall panel and between the wall panels and the main body structure, and waterproof materials are filled in the gaps; the left wallboard and the right wallboard are connected by waterproof sealant, a foam PE rod, a fireproof joint material and a vertical drainage groove.

Has the advantages that: the assembled combined external wallboard has the following advantages:

1. by adopting the colored high-ductility cement-based composite material as a decorative protective layer, the external wall panel has excellent deformability (uniaxial tensile strain reaches 2-10%) and crack control capability, and has excellent crack resistance and tensile strength (3-12MPa), so that the seepage-proofing and waterproof performance of the combined wall panel is improved. The color of the high-ductility cement-based composite material can be customized individually through inorganic pigments such as iron oxide, and the color of the high-ductility cement-based composite material cannot fade with time, so that the wallboard has good decoration.

2. The utility model discloses a foaming concrete can prevent effectively that thermal transmission between the outdoor room as the heat preservation. The connecting piece covered with the FRP wrapping layer has good heat insulation performance, corrosion resistance and shear strength, and two protruding wing angles are arranged at two ends of the connecting piece, so that mechanical engaging force with concrete is enhanced. The utility model discloses each part adopts the connecting piece is connected, can effectively prevent the heat bridge effect of wallboard, has ensured the reliable connection between the different layers of combination wall body simultaneously for the wall body has good wholeness and security.

3. The prefabricated external wall panel is connected with the connecting node of the main structure by adopting a limiting sliding node, the combined external wall panel can freely slide under the action of a medium-small earthquake, does not participate in structural stress, and plays roles in protecting the wall panel, avoiding the cracking of the wall panel and improving the durability of the wall panel; under the action of large earthquake, the wallboard reaches the limit of slidable displacement, and can provide certain lateral strength and rigidity for structural earthquake resistance.

4. The light weight of the foamed concrete and the ceramsite or the baking-free lightweight aggregate concrete can obviously reduce the dead weight of the external wall panel, thereby reducing the load requirements on the foundation and the main structure, reducing the earthquake action, being beneficial to the improvement of the shock resistance of the main structure, and being quicker and more efficient in transportation, construction and installation.

5. The utility model discloses combination external wallboard adopts automatic streamlined production, and size precision is high. The prefabricated building block can be prefabricated in a factory and installed on site, accords with the trend of building industrialization, and can effectively save materials, reduce pollution caused by construction and reduce labor cost.

Drawings

FIG. 1 is a view of the wall panel embedment and connector arrangement of this patent;

FIG. 2 is a schematic cross-sectional composition of the wall panel of this patent;

FIG. 3 is a schematic view of the wall connector configuration of the present patent;

FIG. 4 is a schematic view of a connection node between a wall panel and a main structure embedded bolt;

FIG. 5 is a schematic view of the junction of the wall panel and the corbel of the main structure;

fig. 6 is a schematic view of a horizontal connection configuration between wall panels of this patent.

Reference numerals: 1-connecting piece, 1-1-FRP wrapping layer, 1-2-plastic ring sleeve, 1-3-pressed steel plate, 2-embedded bolt, 3-bracket, 4-decorative protective layer, 5-heat preservation layer, 6-internal structure layer, 7-connecting angle steel, 8-embedded part with hook, 9-frame beam, 10-horizontal bolt, 11-vertical adjusting bolt, 12-bracket embedded part, 13-polyurethane waterproof material, 14-rubber ring, 15-reinforcing mesh, 16-sealant, 17-PE foam rod, 18-vertical drainage groove and 19-fireproof joint material.

Detailed Description

The present application is described in detail below with reference to specific embodiments and the attached drawings.

The main structure of the assembled high-performance combined external wall panel shown in fig. 1 and 2 is divided into an internal structure layer 6, an insulating layer 5 and a decorative protective layer 4 which are sequentially overlapped, wherein the decorative protective layer 4 is made of a colored high-ductility cement-based composite material, the insulating layer 5 is made of foamed concrete, the internal structure layer 6 is made of light ceramsite concrete or baking-free light aggregate concrete, and the three parts are connected into a whole through a connecting piece 1. With reference to fig. 3, the connecting member 1 is formed by pressing a Q235 steel plate, the two ends of the steel plate 1-3 are wide, the middle of the steel plate is narrow, and the two ends of the steel plate 1-3 are provided with two convex wing angles for enhancing the pulling resistance of the connecting member; an FRP wrapping layer 1-1 is arranged at one forked end of the connecting piece 1, and a plastic lantern ring 1-2 is sleeved in the middle of the connecting piece; wherein one end of the connecting piece 1 provided with the FRP wrapping layer 1-1 is embedded in the decorative protective layer 4; the FRP wrapping layer 1-1 is prepared by the following steps: the fiber is carbon fiber or basalt fiber, and the surface of the steel plate is wound and then is immersed in the resin. The width of the plastic lantern ring 1-2 is larger than or equal to that of the end part, and the plastic lantern ring is arranged in the middle of the connecting piece to play a role in positioning.

With reference to fig. 1, 4 and 5, the connection node of the external wall panel and the main structure is connected by a limit sliding node, and the specific method is as follows: the lower part of the externally hung wallboard is provided with two convex brackets 3, the brackets are connected with vertical adjusting bolts 11 with freely adjustable height through bracket embedded parts 12 embedded in the brackets, and then the vertical adjusting bolts 11 are supported on a main structure frame beam 9; the horizontal load that externally-hung wallboard bore links to each other with major structure frame roof beam 9 through pre-buried bolt 2 in the wallboard, specifically connects through the angle steel 7 of seting up vertical slotted hole and the horizontal bolt 10 that passes the angle steel round hole for the wallboard can slide at vertical spacing, and one rubber circle 14 of 2 surperficial increase of pre-buried bolt can produce certain horizontal displacement through extrusion rubber circle 14.

When the external wall panel is installed, gaps are reserved between the upper wall panel and the lower wall panel and between the wall panels and the main body structure, and polyurethane waterproof materials 13 are filled in the gaps. The left wallboard and the right wallboard are connected together after being poured by waterproof sealant 16, a foam PE rod 17, a vertical drainage groove 18 and a fireproof joint material 19. The interface between the internal structure layer 6, the heat insulation layer 5 and the decorative protection layer 4 is provided with a dentate dovetail groove to enhance the interface biting force; between inner structure layer 6 and heat preservation 5, all be equipped with reinforcing bar net 15 between heat preservation 5 and the decorative protection layer 4.

Wherein, the waterproof material 13 and the waterproof sealant 16 are selected from one or more of silicone, polysulfide, polyurethane and acrylic acid. The ductility and mechanical property parameters of the high-ductility cement-based material are related to the mixing proportion, and the manufacturing method of the high-ductility cement-based composite material with the shaping strength of 30MPa comprises the following steps: cement in the matrix: the fly ash is 1:2, the water-cement ratio is controlled to be 0.3, the sand-cement ratio is 0.2, a certain amount of PVA fiber, silica fume and inorganic pigment are doped, and the prepared high-ductility cement-based material with different colors has tensile strain of 2-4%, tensile strength of 3-6MPa and compressive strength of 25-35 MPa.

The pouring process of the assembled high-performance combined external wallboard comprises the following steps:

1. and (3) building a template, cleaning the surface, coating a release agent, placing a decorative protective layer reinforcing mesh 15, and pouring the colored high-ductility cement-based composite material 4.

2. After vibrating the colored high-ductility cement-based composite material to a uniform thickness, the connection key 1 should be inserted into a predetermined position immediately without presetting the direction of the connection key 1, randomly inserted and rotated by 90 degrees, and compacted with concrete inserted into the area around the connection key 1.

3. And (3) vibrating by using a casting platform or a template to ensure that the colorful high-ductility cement-based composite material is completely wrapped around the port of the connecting key 1.

4. Pouring the heat preservation layer 5, after the heat preservation layer is initially set, placing the reinforcing mesh 15, the bracket embedded part 12 and the embedded bolt 2 of the structural layer concrete, and needing accurate positioning; it should be noted that, when the frame beam is poured, the embedded parts 8 with hooks need to be placed to reinforce the anchoring of the embedded parts, and the connecting nodes can be welded on the main body structure.

5. And pouring a structural layer 6, vibrating, checking the position of the embedded bolt 2 again at the moment, and adjusting in time if the position of the embedded bolt 2 deviates in the vibrating process.

6. And (5) performing steam curing on the component for 8 hours, and then demolding.

The prefabricated external wallboard assembly process comprises the following steps:

1. and (4) hoisting the external wall board, and screwing the vertical adjusting bolt 11 into the bracket 3 to support the external wall board on the frame beam 9.

2. Adjusting the distance between the external wall board and the frame beam 9 to ensure that the distance between the external wall board and the frame beam is 20mm, sleeving angle steel 7 into a horizontal bolt 10 extending out of the external wall board, and accurately adjusting a vertical bolt 11 on the bracket 3 to ensure that the horizontal bolt 10 is just in the center of the vertical long circular hole and ensure that the angle steel is tightly attached to an embedded part embedded in the frame beam.

3. Welding angle steel 7 at the lower part of the external wallboard; and adjusting the verticality of the wallboard by using a chain block, welding two angle steels on the upper part of the external wallboard, and screwing a nut.

4. And assembling the next plate according to the process, and ensuring that a gap of 20mm is reserved between the two plates in the horizontal direction and the vertical direction. Waterproof materials 13 are coated between the plate seams, and the waterproof materials of the plate seams generally adopt building sealant such as silicones, polysulphides, polyurethanes, acrylics and the like.

Claims

1. The high-performance assembled combined external wallboard is characterized by comprising an internal structure layer (6), a heat insulation layer (5) and a decorative protection layer (4) which are sequentially overlapped, wherein the internal structure layer (6) is made of lightweight ceramsite concrete or non-fired lightweight aggregate concrete, the heat insulation layer (5) is made of foamed concrete, and the decorative protection layer (4) is made of a colored high-ductility cement-based composite material; the internal structure layer (6), the heat preservation layer (5) and the decorative protection layer (4) are connected together through the connecting piece (1).

2. The external hanging wallboard according to claim 1, wherein the strength of the lightweight concrete as the internal structure layer (6) is more than 25MPa, the thickness is 80mm, the thickness of the foamed concrete as the heat insulation layer (5) is 50mm-100mm, the thickness can be adjusted according to the heat insulation requirement, and the thickness of the colorful high-ductility cement-based composite material as the decorative protection layer (4) is 50 mm.

3. The external hanging wallboard according to claim 1, wherein the connecting piece (1) is formed by pressing Q235 steel plates, one end of each pressed steel plate (1-3) is forked, each end part is provided with a convex wing angle, one end of each forked pressed steel plate (1-3) is provided with a FRP material wrapping layer (1-1) which is embedded in the decorative protective layer (4).

4. The outer wall panel according to claim 3, wherein the pressed steel plates (1-3) are sleeved with plastic collars (1-2) for positioning.

5. The external hanging wallboard of claim 1, wherein when being installed, a gap is reserved between the upper wallboard and the lower wallboard and between the wallboard and the main structure, and a waterproof material (13) is filled in the gap; the left wallboard and the right wallboard are connected together through a waterproof sealant (16), a foam PE rod (17), a fireproof joint material (18) and a vertical drainage groove (19) in a pouring way.

6. The panel according to claim 5, wherein said waterproofing material (13) and waterproofing sealant (16) are each selected from one or more of silicones, polysulphides, polyurethanes, acrylics.

7. The external hanging wallboard according to claim 1, wherein the interface between the internal structure layer (6), the insulating layer (5) and the decorative protection layer (4) is poured into a tooth-shaped dovetail groove to enhance the mechanical biting force of the interface.

8. The panel according to claim 1, wherein the inner structural layer (6) is provided with a double layer of reinforcing mesh and the decorative and protective layer (4) is provided with a single layer of reinforcing mesh.