Built-in externally-pasted thermal insulation combined system for high-rise building outer wall

Abstract

The utility model belongs to the technical field of building outer wall heat preservation, and particularly relates to a built-in and externally-pasted heat preservation combined system for a high-rise building outer wall. Comprising a built-in thermal insulation structure of a shear wall part and an external thermal insulation structure of a masonry wall part, the outer heat preservation structure comprises an outer heat preservation plate, and the built-in heat preservation structure comprises an inner heat preservation plate. At the joint of the shear wall part and the masonry wall part, the clamping tongue on the outer heat preservation plate is inserted into the reserved groove of the built-in heat preservation structure, and the insertion end of the clamping tongue is aligned and tightly connected with the inner heat preservation plate of the built-in heat preservation structure; the joint of the built-in heat preservation structure and the external heat preservation structure is made into a slot type, it is guaranteed that heat preservation of the external envelope structure of the building forms a whole, the overall heat preservation effect is improved, the possibility of a heat bridge is reduced to zero, economic losses caused by the heat bridge in the later period are avoided, the construction quality is improved, and refinement is really achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of building exterior wall insulation, and particularly relates to an internal and external pasted insulation composite system for high-rise building exterior walls. Background Technique

[0002] In recent years, cracks and peeling have occurred on building exterior walls, and accidents of damaging vehicles and causing personal injuries and deaths have occurred from time to time. The external wall insulation construction technology in China has been around for nearly 25 years, and some external insulation constructions have reached the designed service life, which has caused great impacts on personal health and property losses. The frequent occurrence of external insulation technology accidents urgently requires continuous innovation and progress in the industry. The internal insulation structure system emerged as the times require. This system consists of an inner concrete wall, a high-performance insulation board, a wire mesh sheet with crack resistance and reinforcement, and an outer concrete layer. Its design concept is to tightly connect the inner and outer concrete walls through special connectors to form an indestructible whole. At the same time, the insulation board and the outer concrete protection layer cooperate with each other to jointly build a complete and excellent internal insulation structure system, thus ensuring the insulation effect, structural stability and durability of the exterior wall project.

[0003] From the perspective of building structure and cost, generally, the building exterior wall adopts a mixed form of shear wall and masonry wall. The shear wall adopts internal insulation construction, and the masonry wall adopts external insulation thin plastering construction. The treatment of the joints between the two different insulation construction methods has become a major difficulty in construction, directly affecting the overall insulation effect and aesthetics of the building. With the increase of the service life, the heat bridge phenomenon in these areas will become more and more serious and difficult to cure completely. This not only increases the later maintenance cost, but most importantly, it may cause economic losses to users due to heat bridge problems, greatly affecting the service function and service life of the house. Summary of the Utility Model

[0004] The purpose of the utility model is to ensure the integrity of the insulation performance of the building exterior wall enclosure structure, avoid the harm of the heat bridge phenomenon, and improve the overall insulation effect.

[0005] The utility model provides the following technical solutions: an internal and external pasted insulation composite system for high-rise building exterior walls, including an internal insulation structure for the shear wall part and an external insulation structure for the masonry wall part; the external insulation structure includes an external insulation board, and the internal insulation structure includes an internal insulation board; at the joint between the shear wall part and the masonry wall part, the tongue on the external insulation board is inserted into the reserved groove of the internal insulation structure, and the insertion end of the tongue is aligned with and closely contacts the internal insulation board of the internal insulation structure.

[0006] Furthermore, a polyurethane foaming agent is filled between the reserved groove of the internal insulation structure and the tongue of the external insulation board.

[0007] Furthermore, connecting pieces are provided on the internal insulation board, and the connecting pieces pass through the internal insulation board and are tied and fixed to the wall reinforcement of the shear wall part.

[0008] Furthermore, the density of the connecting pieces on the internal insulation board is ≥6 pieces per square meter; the length of the connecting pieces is 10 mm less than the thickness of the wall of the shear wall part, and plastic protective caps are installed at both ends of the connecting pieces.

[0009] Furthermore, the shear wall part includes a shear wall main body and a concrete protective layer. The internal insulation board is located between the shear wall main body and the concrete protective layer, and a decorative surface layer is provided on the outer side of the concrete protective layer.

[0010] Furthermore, the external insulation board is bonded to and fixed to the wall surface of the masonry wall part by insulation nails; a first plastering mortar is provided on the outer side of the external insulation board, and a first fiberglass mesh is laid in the first plastering mortar; a second plastering mortar is provided on the outer side of the first plastering mortar, and a second fiberglass mesh is laid in the second plastering mortar; a decorative surface layer is provided on the outer side of the second plastering mortar.

[0011] Furthermore, the decorative surface layer is a real stone paint layer, and the real stone paint layer successively includes a flexible water-resistant putty leveling layer, a sealing primer layer, a paint layer, and a clear varnish topcoat layer.

[0012] Furthermore, the depth of the reserved groove on the built-in insulation structure is 30 mm.

[0013] Furthermore, the thickness of the concrete protective layer is 50 mm, and the thickness of the internal insulation board is 50 mm.

[0014] Compared with the prior art, the advantages of the present utility model are as follows:

[0015] A built-in external pasted insulation composite system for the outer wall of a high-rise building provided by the present utility model makes the joint between the built-in insulation structure and the external insulation structure into a slot type. When constructing the built-in insulation structure, patches are added to the corresponding position of the formwork to form a reserved groove. When constructing the external insulation structure, the external insulation board is processed into a shape with a tongue on one side. During installation, polyurethane foaming agent is sprayed into the reserved groove and extruded tightly to ensure that the heat insulation of the building's envelope structure forms a whole, improving the overall heat insulation effect, reducing the possibility of heat bridges to zero, avoiding the economic losses caused by heat bridges in the later stage, improving the construction quality, and truly achieving excellence.

[0016] By adopting the built-in insulation construction, the built-in insulation structure is completed at one time along with the construction of the shear wall main structure, and the internal insulation board is completely wrapped in the concrete, improving the integrity between the two, greatly reducing the damage of external factors to the insulation material. The overall connection of the internal and external concrete and the internal insulation board eliminates the potential safety hazards of easy cracking, easy peeling and falling of the external wall insulation and surface layer of high-rise residential buildings, and the insulation material can reach the same service life as the building.

[0017] The combined construction of the built-in thermal insulation structure and the external thermal insulation structure combines the three processes of the main structure, the thermal insulation layer, and the finishing layer of the shear wall part, reducing the construction area of the external thermal insulation, saving the project construction period, and reducing the potential safety hazards of the external wall construction while meeting the requirements of energy-saving design. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic exploded view of the built-in thermal insulation structure and the external thermal insulation structure;

[0019] Figure 2 It is a schematic view of the cooperation between the tongue and the reserved groove;

[0020] Figure 3 It is a structural diagram of the shear wall part and the masonry wall part.

[0021] In the figure: 1 - external thermal insulation board; 1.1 - thermal insulation nail; 2 - tongue; 3 - reserved groove; 4 - internal thermal insulation board; 4.1 - connecting piece; 5 - main body of shear wall; 6 - concrete protective layer; 7 - decorative surface layer; 8 - masonry wall; 9 - plaster mortar with fiberglass mesh layer. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0023] As Figure 1 、 Figure 2 、 Figure 3 shown: A combined system of built-in and externally pasted thermal insulation for the exterior walls of high-rise buildings includes a built-in thermal insulation structure for the shear wall part and an external thermal insulation structure for the masonry wall part; the external thermal insulation structure includes an external thermal insulation board 1, and the built-in thermal insulation structure includes an internal thermal insulation board 4; at the joint of the shear wall part and the masonry wall part, the tongue 2 on the external thermal insulation board 1 is inserted into the reserved groove 3 of the built-in thermal insulation structure, and the insertion end of the tongue 2 is aligned with and closely abuts against the internal thermal insulation board 4 of the built-in thermal insulation structure. The depth of the reserved groove 3 on the built-in thermal insulation structure is 30 mm.

[0024] Polyurethane foam is filled between the reserved groove 3 of the built-in thermal insulation structure and the tongue 2 of the external thermal insulation board 1; before installing the external thermal insulation board 1, the reserved groove 3 is filled with polyurethane foam, then the tongue 2 is inserted into the reserved groove 3 and compacted. After the polyurethane foam solidifies, the excess foam extruded at the joint is cut off with a knife.

[0025] The inner insulation board 4 is provided with connectors 4.1, and the connectors 4.1 pass through the inner insulation board 4 and are bound and fixed to the wall reinforcement in the shear wall part. The density of the connectors 4.1 on the inner insulation board 4 is ≥6 per square meter; the length of the connectors 4.1 is 10 mm less than the wall thickness of the shear wall part, and plastic protective caps are installed at both ends of the connectors 4.1.

[0026] The shear wall part includes a shear wall main body 5 and a concrete protective layer 6. The inner insulation board 4 is located between the shear wall main body 5 and the concrete protective layer 6, and a decorative surface layer 7 is provided on the outer side of the concrete protective layer 6. The thickness of the concrete protective layer 6 is 50 mm, and the thickness of the inner insulation board 4 is 50 mm.

[0027] The outer insulation board 1 is bonded to the wall surface of the masonry wall part and fixed by insulation nails 1.1; a first layer of plastering mortar is provided on the outer side of the outer insulation board 1, and a first layer of fiberglass mesh is laid in the first layer of plastering mortar; a second layer of plastering mortar is provided on the outer side of the first layer of plastering mortar, and a second layer of fiberglass mesh is laid in the second layer of plastering mortar; a decorative surface layer 7 is provided on the outer side of the second layer of plastering mortar. The first layer of plastering mortar, the first layer of fiberglass mesh, the second layer of plastering mortar and the second layer of fiberglass mesh together form a plastering mortar plus fiberglass mesh layer 9.

[0028] The decorative surface layer 7 is a real stone paint layer, and the real stone paint layer sequentially includes a flexible water-resistant putty leveling layer, a sealing primer layer, a paint layer, and a clear topcoat layer.

[0029] The construction process of a combined internal and external wall insulation system for high-rise buildings includes:

[0030] Install the inner insulation board

[0031] When installing the internal thermal insulation board 4, install it according to the position and axis control of the thermal insulation detailed design drawing, and install it in place with correct dimensions and specifications. Then, pass the connecting piece 4.1 through the internal thermal insulation board 4 and tie it firmly to the wall reinforcement. There are no less than 6 connecting pieces 4.1 per square meter, and the length is 10 mm less than the wall thickness. Plastic protection caps are installed on both sides. When installing the formwork, the through-wall tie bolts for fixing the formwork should penetrate from the inside to the outside to prevent polystyrene board fragments (internal thermal insulation board fragments) from falling into the inner structural wall, and promptly remove the sundries; install the tie and reinforcement bolts to ensure that the formwork is tight and firm to prevent concrete offset and leakage. Special attention should be paid to the plastic cards for the reinforcement protection layer. Before installation, check the firmness of the plastic cards to prevent the plastic cards from being knocked off during formwork installation. If it is difficult to install the formwork due to the improper installation of the internal thermal insulation board 4, do not forcefully close the formwork. Instead, adjust the internal thermal insulation board 4 and then close the formwork to prevent the internal thermal insulation board 4 from being displaced. Select a concrete slump of 200 - 220 mm, and the grade should meet the requirements of the design drawing. First, pour the inner structural layer to 200 mm, then move to the outer protective layer and pour to 500 mm, and then return to pour the inner structural layer. Repeat this process until the pouring is completed. When pouring the concrete on both sides simultaneously, pay attention to mainly pouring from the inside, and it is prohibited that the height difference between the concrete liquid levels on the inside and outside exceeds 400 mm to avoid displacing the internal thermal insulation board 4. The exterior wall structure concrete should be vibrated densely. After the concrete on both sides of the internal thermal insulation board 4 is filled to the required height, vibrate it densely in layers. Under normal circumstances, the concrete curing is carried out according to the general curing measures.

[0032] Slot cleaning

[0033] Before commencing the secondary structure project, remove all the excess mortar within the reserved grooves 3 until the surface of the internal thermal insulation board 4 is completely exposed. Subsequently, the cleaning process employed was rinsing with clean water, aiming to thoroughly purify the joint interface, ensuring it is spotless and providing a solid foundation for subsequent construction.

[0034] During the secondary structure construction stage, arrange the exterior wall masonry work adjacent to the edge of the reserved groove 3, while leaving sufficient space to provide enough operating range for the construction operation of the external thermal insulation structure. This not only ensures the continuity of the process but also guarantees the harmonious coexistence among various structural layers, enhancing the thermal insulation performance and structural stability of the overall building.

[0035] External thermal insulation structure construction

[0036] Treat the masonry wall 8 according to the engineering quality and technical requirements to meet the working conditions for external wall thermal insulation with the external thermal insulation board 1 (EPS thermal insulation board). The masonry wall 8 should be firm, flat, dry, and free from phenomena such as cracking, hollowing, loosening, efflorescence, powdering, peeling, and popping ash. The surface should be clean, without attachments such as oil stains and release agents that hinder bonding. The convex, hollow, and loose parts should be removed and leveled with 1:3 cement mortar. When pasting the external thermal insulation board 1, the adhesive should be applied to the back of the external thermal insulation board 1. The adhesive is applied on the bonding surface of the external thermal insulation board 1 using the full bonding method. The reserved groove 3 should be filled with polyurethane foam during installation. After the tongue 2 on the external thermal insulation board 1 is inserted, it should be squeezed tightly, and then the insulation nail 1.1 construction is carried out. The installation of the insulation nail 1.1 should be at the position required by the design. Drill holes with an impact drill or an electric hammer, and the drilling depth should be 10 mm greater than the anchoring depth. The plastering surface interface treatment can be carried out at least 24 hours after the completion of the pasting construction of the external thermal insulation board 1. Apply the first layer of plastering mortar on the surface of the external thermal insulation board 1, which should be uniform, flat, with a thickness of 2 mm - 3 mm, and press the first layer of fiberglass mesh while it is still wet. The fiberglass mesh cloth should be butt-jointed, not exposed, and not dry-lapped. The paving should be flat and without wrinkles. The construction interval of the plastering mortar should be at one floor to facilitate the subsequent construction lap. If a pause is needed on the continuous wall surface, the plastering mortar should form a stepped slope stubble, and the stubble spacing should not be less than 150 mm. At the corners, it is also necessary to wrap around the corners bidirectionally from each side and overlap each other, and the overlap width should not be less than 200 mm. Apply the second layer of plastering mortar, which should be uniform, flat, with a thickness of 3 mm - 6 mm, and press the second layer of fiberglass mesh while it is still wet. After the construction of the plastering mortar is completed, check the flatness, verticality, and squareness of the corners. Those that do not meet the requirements should be repaired with the plastering mortar.

[0037] Construction of the real stone paint layer

[0038] First, use a flexible water-resistant putty to plaster the wall surface smoothly and then paint it. The wall surface includes the surfaces of the plaster mortar with fiberglass mesh layer 9 and the concrete protective layer 6. The construction of the finish should be carried out continuously, and the construction interruption should be set at the positions such as the internal corner and the waistline. After the putty is completely dry, apply a coat of sealing primer. After the sealing primer is completely dry, adjust the color and prepare the ingredients according to the determined color of the natural stone or the color of the sample, and make the color of the paint as close as possible to the color of the real stone paint itself. The paint must be applied evenly without any missed coating or penetration areas, and generally apply two coats. Spray the real stone paint in sections and apply the selected base coloring paint on the section joints. When spraying on the large surface, the section joint areas should be completely covered or treated by scraping the joints. When constructing the real stone paint, spray a slightly thinner paint for the first time. After it is uniform and dry, spray the second coat of paint. When spraying the second coat of paint, the paint should be slightly thicker and sprayed thicker. After the material in the spray gun is used up, blow the sprayed finish with the ejected air flow to make the corrugated pattern closer to the stone effect. After the paint spraying is completed, wait until the real stone paint is completely dry (generally at least 3 days in sunny days) before spraying the clear topcoat. Diluent can be added appropriately during construction, and pay attention to keeping the viscosity, air pressure, and nozzle size consistent, and pay attention to preventing sagging.

[0039] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present utility model. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present utility model. Therefore, the present utility model will not be limited to these embodiments shown herein, but rather should be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A high-rise building exterior wall internal and external insulation combined system, characterized by: The invention comprises a built-in thermal insulation structure of a shear wall part and an external thermal insulation structure of a masonry wall part; the external thermal insulation structure comprises an external thermal insulation board (1), and the built-in thermal insulation structure comprises an internal thermal insulation board (4); at the joint between the shear wall part and the masonry wall part, a latch (2) on the external thermal insulation board (1) is inserted into a reserved groove (3) of the built-in thermal insulation structure, and the insertion end of the latch (2) is aligned with and tightly connected to the internal thermal insulation board (4) of the built-in thermal insulation structure.

2. A high-rise building exterior wall internal and external insulation combined system according to claim 1, characterized in that: The space between the reserved groove (3) of the built-in thermal insulation structure and the latching tongue (2) of the external thermal insulation board (1) is filled with polyurethane foaming agent.

3. A high-rise building exterior wall internal and external insulation combined system according to claim 2, characterized in that: The inner thermal insulation board (4) is provided with a connecting piece (4.1), and the connecting piece (4.1) passes through the inner thermal insulation board (4) and is tied and fixed to the wall reinforcement of the shear wall part.

4. A high-rise building exterior wall internal and external insulation combined system according to claim 3, characterized in that: The density of the connecting pieces (4.1) on the inner insulation board (4) is ≥6 pieces per square meter; the length of the connecting piece (4.1) is 10 mm less than the wall thickness of the shear wall part, and plastic protective caps are installed at both ends of the connecting piece (4.1).

5. A high-rise building exterior wall internal and external insulation combined system according to any one of claims 1 to 3, characterized in that: The shear wall part comprises a shear wall body (5) and a concrete protective layer (6), the inner insulation board (4) is located between the shear wall body (5) and the concrete protective layer (6), and a decorative surface layer (7) is provided on the outer side of the concrete protective layer (6).

6. A high-rise building exterior wall internal and external insulation combined system according to any one of claims 1 to 3, characterized in that: The external insulation board (1) is bonded to the wall surface of the masonry wall and fixed by insulation nails (1.1); a first layer of plastering mortar is provided on the outer side of the external insulation board (1), and a first layer of glass fiber mesh is laid in the first layer of plastering mortar; a second layer of plastering mortar is provided on the outer side of the first layer of plastering mortar, and a second layer of glass fiber mesh is laid in the second layer of plastering mortar; a decorative surface layer (7) is provided on the outer side of the second layer of plastering mortar.

7. A high-rise building exterior wall internal and external insulation combined system according to claim 6, characterized in that: The decorative surface layer (7) is a real stone paint layer, which comprises a flexible water-resistant putty leveling layer, a sealing primer layer, a paint layer, and a finishing varnish layer in sequence.

8. The high-rise building exterior wall internal and external insulation combined system according to claim 1, characterized in that: The depth of the reserved groove (3) on the built-in heat-insulating structure is 30 mm.

9. The high-rise building exterior wall internal and external insulation combined system according to claim 5, characterized in that: The thickness of the concrete protective layer (6) is 50 mm, and the thickness of the inner insulation board (4) is 50 mm.

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