CN110284617B - Prefabricated external wall external thermal insulation structure and construction method thereof - Google Patents

Prefabricated external wall external thermal insulation structure and construction method thereof Download PDF

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Publication number
CN110284617B
CN110284617B CN201910474530.2A CN201910474530A CN110284617B CN 110284617 B CN110284617 B CN 110284617B CN 201910474530 A CN201910474530 A CN 201910474530A CN 110284617 B CN110284617 B CN 110284617B
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layer
bearing frame
bearing
concrete
prefabricated
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CN110284617A (en
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沈成东
杨增水
殷敏
屠仁国
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Shanghai Port City Construction And Installation Engineering Co ltd
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Shanghai Port City Construction And Installation Engineering 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
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74Heat, sound or noise insulation, absorption, or reflection . Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/76Heat, sound or noise insulation, absorption, or reflection . Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only
    • E04B1/762Exterior insulation of exterior walls
    • E04B1/7629Details of the mechanical connection of the insulation to the wall
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74Heat, sound or noise insulation, absorption, or reflection . Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/76Heat, sound or noise insulation, absorption, or reflection . Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only
    • E04B1/78Heat insulating elements
    • E04B1/80Heat insulating elements slab-shaped
    • 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
    • E04BUILDING
    • E04CSTRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/02Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
    • E04C2/26Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups
    • E04C2/284Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups at least one of the materials being insulating
    • E04C2/288Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups at least one of the materials being insulating composed of insulating material and concrete, stone or stone-like material
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04CSTRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/30Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04FFINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F13/00Coverings or linings, e.g. for walls or ceilings
    • E04F13/02Coverings or linings, e.g. for walls or ceilings of plastic materials hardening after applying, e.g. plaster
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04FFINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F13/00Coverings or linings, e.g. for walls or ceilings
    • E04F13/02Coverings or linings, e.g. for walls or ceilings of plastic materials hardening after applying, e.g. plaster
    • E04F13/04Bases for plaster
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04FFINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F13/00Coverings or linings, e.g. for walls or ceilings
    • E04F13/02Coverings or linings, e.g. for walls or ceilings of plastic materials hardening after applying, e.g. plaster
    • E04F13/04Bases for plaster
    • E04F13/047Plaster carrying meshes

Abstract

The invention discloses a prefabricated external wall external thermal insulation structure and a construction method thereof, and relates to the technical field of prefabricated building construction. The prefabricated external wall external thermal insulation structure comprises a prefabricated concrete wall board and a thermal insulation layer, wherein a bearing frame is fixedly arranged on the outer side of the prefabricated concrete wall board, and a bearing groove is formed in one side of the bearing frame, which is far away from the prefabricated concrete wall board; the heat preservation is fixed to be inlayed in locating the bearing groove, and the heat preservation deviates from one side of bearing the frame and still is equipped with the enhancement layer. A construction method of a prefabricated external thermal insulation structure of an external wall comprises the steps of arranging a bearing frame on the inner side of a mold, paving a thermal insulation layer in a bearing groove on the bearing frame and the like. The invention can ensure the structural performance of the main body of the outer wall, simultaneously realize convenient replacement of the heat-insulating layer, ensure the heat-insulating performance of the building and improve the living experience of residents; economic and beautiful, high construction efficiency and quality and can reduce environmental pollution.

Description

Prefabricated external wall external thermal insulation structure and construction method thereof
Technical Field
The invention relates to the technical field of prefabricated building construction, in particular to a prefabricated external wall external thermal insulation structure and a construction method thereof.
Background
The construction of the traditional external thermal insulation structure of the external wall mostly adopts a field wet operation mode; on-site operation mode workload is large, engineering quality is greatly influenced by environment, engineering progress and quality are difficult to guarantee, environmental pollution is large, and the method does not accord with environmental protection policies advocated by the state.
The patent application with the prior publication number of CN102127934A discloses a prefabricated external wall external thermal insulation structure and a construction method thereof. The prefabricated external wall external thermal insulation structure comprises a thermal insulation material layer and a prefabricated reinforced concrete protective wallboard, wherein the thermal insulation material layer is arranged on the inner side of the prefabricated reinforced concrete protective wallboard, and the prefabricated reinforced concrete protective wallboard is divided into a plurality of small unit components according to a building facade structure.
By adopting the technical scheme, the prefabricated reinforced concrete protection wallboard is prefabricated by adopting small unit components, thereby being beneficial to realizing component standardization and reducing the production and manufacturing cost of the components. However, when the prefabricated exterior wall is applied to actual buildings, the thermal insulation material layer on the prefabricated exterior wall is easy to lose effectiveness due to aging and the like after being used for a period of time, which is one of the common defects of the existing exterior wall thermal insulation schemes. In the prefabricated external wall external thermal insulation structure, once the thermal insulation material layer fails, workers can hardly complete the replacement of the thermal insulation material layer without damaging the structural performance of the prefabricated reinforced concrete protection wall board. Therefore, in order to ensure the building safety, the residents can only accept the reality of the heat preservation failure of the outer wall, and the living experience of the residents is greatly influenced.
Disclosure of Invention
In view of the above technical problems, one of the objectives of the present invention is to provide a prefabricated external wall external thermal insulation structure, which utilizes a bearing frame to protect a prefabricated concrete wall panel, so as to greatly improve the convenience of maintaining a thermal insulation layer and ensure the living experience of residents on the basis of ensuring the overall structural performance of the external wall.
In order to achieve the purpose, the invention provides the following technical scheme:
a prefabricated external wall external thermal insulation structure comprises a prefabricated concrete wall panel and a thermal insulation layer, wherein a bearing frame is fixedly arranged on the outer side of the prefabricated concrete wall panel, and a bearing groove is formed in one side of the bearing frame, which is far away from the prefabricated concrete wall panel; the heat preservation is fixedly embedded in the bearing groove, and a reinforcing layer is further arranged on one side of the heat preservation, which deviates from the bearing frame.
Through adopting above-mentioned technical scheme, set up on precast concrete wallboard and bear the frame to set up the heat preservation in bearing the weight of the groove on bearing the frame, and deviate from bearing one side at the heat preservation and set up the enhancement layer. The bearing frame can improve the structural strength of the outer wall; the enhancement layer can guarantee this outer insulation construction's of outer wall stability to play the guard action to the heat preservation. When the heat preservation layer is invalid, the staff can lift the heat preservation layer off from bearing frame after removing the enhancement layer. In this in-process, bear the weight of and can play the guard action to precast concrete wallboard body, prevent that precast concrete wallboard major structure from receiving the damage. Through the mode, the performance of the precast concrete wallboard structure is fully protected, and meanwhile, the convenient maintenance of the heat insulation layer in the outer wall can be realized, so that the living experience of residents is fully guaranteed.
The invention is further configured to: a plurality of bearing grooves are arranged on the bearing frame in parallel at intervals; the heat preservation layer comprises a plurality of heat preservation plates, and the heat preservation plates are embedded in the bearing grooves in a one-to-one correspondence mode.
By adopting the technical scheme, the heat insulation layer is formed by a plurality of heat insulation plates, so that the standardized production of the heat insulation plates is easy to realize, and the production cost can be reduced; meanwhile, the convenience of replacing and maintaining the heat-insulating layer can be improved.
The invention is further configured to: bear the frame and include a plurality of steel members that are parallel interval setting, arbitrary adjacent two the steel member all encloses into one bear the weight of the groove.
Through adopting above-mentioned technical scheme, bear the frame and constitute by a plurality of steel members jointly, the position of each steel member can be adjusted in a flexible way to the staff to adapt to the size of outer wall and insulation board, greatly improve the convenience of construction.
The invention is further configured to: one side of the steel member, which is close to the precast concrete wallboard, is fixed with a plurality of anchor rods at intervals along the length direction of the steel member, and the anchor rods are poured and fixed in the precast concrete wallboard.
Through adopting above-mentioned technical scheme, each stock is pour and is fixed in the precast concrete wallboard, realizes the stable installation of each steel member on the precast concrete wallboard.
The invention is further configured to: bear and still be fixed with the elastic buffer layer between frame and the precast concrete wallboard, the elastic buffer layer is close to the even shaping of one side of precast concrete wallboard and has a plurality of adhesion archs.
By adopting the technical scheme, in the process that a worker removes the reinforcing layer from the outer wall, the elastic buffer layer can buffer the impact of the outside on the prefabricated concrete wallboard main body, so that the structural performance of the outer wall main body is further protected; simultaneously, through set up a plurality of adhesion archs on elastic buffer layer, can improve the compactness that precast concrete wallboard and elastic buffer layer combine.
The invention is further configured to: the enhancement layer is including evenly coating in the heat preservation deviates from the net cloth in the rendering coat mortar layer of bearing frame one side and evenly laying in the rendering coat mortar layer.
Through adopting above-mentioned technical scheme, the mortar layer cooperation net cloth of plastering can play effective guard action to the heat preservation.
The invention is further configured to: the side of the reinforcing layer, which is far away from the heat-insulating layer, is also uniformly coated with a decorative layer.
Through adopting above-mentioned technical scheme, the decorative layer can further improve the aesthetic property of prefabricated outer wall, satisfies the demand of resident family to help reducing the wet operation in scene, can improve efficiency of construction and quality, reducible environmental pollution.
The invention is further configured to: a water stopping groove is concavely formed on the bottom surface of the precast concrete wallboard; a plurality of connecting sleeves which are right opposite to the water stopping grooves are pre-buried in the precast concrete wall board, and the connecting sleeves are evenly arranged at intervals along the extending direction of the water stopping grooves.
By adopting the technical scheme, the prefabricated outer wall can be stably assembled in a mode that the steel bar sleeves are matched with concrete pouring by means of the connecting sleeves pre-embedded in the prefabricated concrete wall board; in the process, the water stopping groove arranged on the bottom surface of the precast concrete wallboard can prolong the water seepage path at the bottom of the precast outer wall, so that the waterproof performance of the precast outer wall is improved.
In view of the above technical problems, another object of the present invention is to provide a construction method of a prefabricated external thermal insulation structure, in which a thermal insulation layer is disposed on a side of a bearing frame away from a precast concrete wall panel, so as to ensure the structural performance of the prefabricated external wall and improve the convenience of replacing the thermal insulation layer.
In order to achieve the purpose, the invention provides the following technical scheme:
a construction method of a prefabricated external wall external thermal insulation structure comprises the following steps:
s1, erecting a formwork and pouring concrete;
s2, before concrete is solidified, arranging a bearing frame on the inner side of the mould, so that the bearing frame is poured and fixed on the surface of the precast concrete wallboard;
s3, laying an insulating layer in the bearing grooves on the bearing frame;
and S4, uniformly coating plastering mortar on the side, away from the bearing frame, of the heat insulation layer, and paving a mesh cloth in the plastering mortar.
Through adopting above-mentioned technical scheme, when the resident needed to be changed the heat preservation, the staff can get rid of the heat preservation earlier and deviate from plastering mortar and the net cloth of precast concrete wallboard one side, then can tear down the heat preservation from bearing the frame, accomplishes the change of heat preservation at last. Through this kind of mode, at the in-process of changing the heat preservation, protect the major structure of outer wall to the at utmost, guarantee the structural performance of outer wall.
The invention is further configured to: after step S1 is completed and before step S2 is started, the following steps should be performed: before the concrete is condensed, an elastic buffer layer is laid on the surface of the concrete; in step S2, the bearing frame is disposed on a side of the elastic buffer layer facing away from the precast concrete wall panel; a plurality of anchor rods are fixed on one side, close to the elastic buffer layer, of the bearing frame, and the anchor rods penetrate through the elastic buffer layer and extend into concrete.
Through adopting above-mentioned technical scheme, the elastic buffer layer can play further guard action to precast concrete wallboard, improves the security.
In conclusion, the invention has the following beneficial effects:
1. the bearing frame is arranged on one side of the precast concrete wallboard, the heat insulation layer is arranged in the bearing groove on the bearing frame, and the reinforcing layer arranged on the heat insulation layer is matched, so that the heat insulation layer is conveniently replaced while the structural performance of the outer wall main body is ensured, the heat insulation performance of a building is ensured, and the living experience of residents is improved;
2. the bearing frame is arranged into a structural form of combining a plurality of steel members, and a plurality of bearing grooves are formed among the steel members, so that the standardized production of the heat insulation plate and the steel members is facilitated, the production cost is reduced, and the convenience of construction is improved;
3. through set gradually enhancement layer and decorative layer on one side of keeping away from precast concrete wallboard at the heat preservation, when guaranteeing prefabricated outer wall structural performance, improve the aesthetic property of this prefabricated assembled outer wall, reduce the wet operation in scene, improve efficiency of construction and quality, reduce environmental pollution.
Drawings
FIG. 1 is a schematic sectional view showing the overall structure of example 1;
FIG. 2 is a schematic structural view of embodiment 1 mainly used for embodying a loading frame;
fig. 3 is a schematic flow chart of a construction method of the prefabricated external thermal insulation structure in embodiment 2.
Reference numerals: 1. prefabricating a concrete wallboard; 101. a water stopping tank; 2. connecting a sleeve; 3. an elastic buffer layer; 31. sticking the bumps; 4. a carrier; 41. angle steel; 42. t-shaped steel; 43. a bearing groove; 44. an anchor rod; 5. a thermal insulation board; 6. a reinforcing layer; 61. plastering a mortar layer; 62. mesh cloth; 7. and (7) a decorative layer.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and examples.
Example 1:
referring to the attached drawing 1, the prefabricated external wall external thermal insulation structure comprises a prefabricated concrete wall panel 1 and a thermal insulation layer arranged on the outer side of the prefabricated concrete wall panel 1. The precast concrete wall panel 1 is cast and molded by adopting a mold, and a water stopping groove 101 is concavely molded on the ground; the water stop tank 101 may be provided in a trapezoidal structure. Pouring is fixed with framework of steel reinforcement in precast concrete wallboard 1, and still pre-buried in precast concrete wallboard 1 have a plurality of connecting sleeve 2 to the stagnant water groove 101 setting, and each connecting sleeve 2 lower extreme opening all communicates with the outside, and each connecting sleeve 2 is even interval setting along the extending direction of stagnant water groove 101. During actual assembly, with the help of each connecting sleeve 2, the assembly can be completed in a steel bar sleeve mode through the prefabricated external wall, and the water stopping groove 101 can improve the waterproof performance of the prefabricated external wall.
An elastic buffer layer 3 is laid on the outer side of the precast concrete wallboard 1, and the elastic buffer layer 3 can be made of pressure-resistant rubber; elastic buffer layer 3 is close to the protruding shaping in 1 one side of precast concrete wallboard and has the bonding arch 31, and this bonding arch 31 is provided with a plurality of groups at the interval of extending on elastic buffer layer 3 straight line and parallel. In actual production, the adhesion protrusions 31 help to improve the tightness of the bonding of the precast concrete wall panel 1 to the elastic buffer layer 3.
With reference to fig. 2, a bearing frame 4 is further arranged on one side of the elastic buffer layer 3, which is far away from the precast concrete wall panel 1, the bearing frame 4 comprises a plurality of horizontally arranged steel members, and the steel members are arranged in parallel at intervals from top to bottom; wherein, the steel members located at the uppermost and lowermost of precast concrete panel 1 may adopt angle steel 41, and each steel member located between two angle steels 41 may adopt T-shaped steel 42. Taking any one of them steel member as an example, one side that the steel member is close to precast concrete wallboard 1 is fixed with a plurality of stock 44 perpendicularly, and each stock 44 is the even interval setting along the length direction of steel member. In actual production, the anchor rods 44 can vertically penetrate through the elastic buffer layer 3 and extend into the precast concrete wall panel 1; the anchor rods 44 are cast-fixed in the precast concrete wall panel 1, thereby achieving stable installation of the steel members. After the installation of each steel member is completed, a bearing groove 43 is formed between any two adjacent steel members.
Referring to fig. 1, the heat insulation layer includes a plurality of heat insulation boards 5, each heat insulation board 5 is in one-to-one correspondence with the bearing groove 43, each heat insulation board 5 is embedded in the corresponding bearing groove 43, and the heat insulation boards are fixed to the bearing frame 4 and the elastic buffer layer 3 through adhesive. Specifically, the insulation board 5 may be a board having insulation properties, such as an expanded polystyrene board, an extruded polystyrene board, or a rock wool board.
Meanwhile, a reinforcing layer 6 is arranged on one side of the heat-insulating layer, which is far away from the bearing frame 4; this enhancement layer 6 is including evenly coating the rendering coat mortar layer 61 on the heat preservation, and this rendering coat mortar layer 61's material can adopt the bonding rendering coat mortar. The plastering mortar layer 61 is uniformly laid with a mesh cloth 62, and the mesh cloth 62 can be an alkali-resistant glass fiber mesh cloth 62. And, one side that enhancement layer 6 deviates from the heat preservation still can set up decorative layer 7, and this decorative layer 7 can adopt outer wall coating evenly to coat on enhancement layer 6 and form. After the construction is completed, the reinforcing layer 6 can improve the stability of the installation of the heat insulation layer, and the decorative layer 7 can greatly improve the aesthetic property of the prefabricated external wall and reduce the field wet operation.
The working principle of the embodiment is as follows: when the heat insulation layer fails, the worker can remove the heat insulation layer from the bearing frame 4 after removing the reinforcing layer 6. In this process, bear frame 4 can play the guard action to precast concrete wallboard 1 body, prevents that 1 major structure of precast concrete wallboard from receiving the damage. Through this kind of mode, when guaranteeing outer wall main part structural performance, realize the convenient change of heat preservation, guarantee the thermal insulation performance of building, improve the resident family and live and experience.
Example 2:
referring to fig. 3, a construction method of a prefabricated external wall external insulation structure includes the following steps:
and S1, erecting a formwork and pouring concrete.
Specifically, in production, the mold can be arranged on a steel platform; after the formwork is erected, a steel reinforcement framework is laid on the inner side of the formwork, and then concrete is poured for forming the precast concrete wallboard 1.
S2, before the concrete is set, the bearing frame 4 is arranged on the inner side of the mould, so that the bearing frame 4 is fixed on the surface of the precast concrete wall panel 1 by pouring.
Specifically, before the concrete is set, the elastic buffer layer 3 may be prepared, and a plurality of through holes for penetrating the anchor rods 44 may be uniformly formed on the elastic buffer layer 3 according to the design requirement. Subsequently, the elastic buffer layer 3 is laid on the concrete surface so that the side of the elastic buffer layer 3 where the adhesion protrusion 31 is located is in contact with the concrete surface. The resilient cushioning layer 3 is then pressed down to remove excess concrete.
After the preparation is finished, all the steel members are arranged on one side, away from the concrete, of the elastic buffer layer 3; each anchor rod 44 on the steel member penetrates through the elastic buffer layer 3 through each corresponding through hole and extends into the concrete; after the concrete has set, the anchor rods 44 are cast and fixed in the precast concrete wall panel 1.
S3, laying insulating layer in the bearing groove 43 of the bearing frame 4.
In the construction, after the concrete is condensed, the bearing grooves 43 are respectively paved with the heat insulation plates 5, and the heat insulation plates 5 jointly form a heat insulation layer. Specifically, a plurality of bonding points or bonding strips can be coated on one side of the heat-insulating plate 5 by using a bonding agent, so that the coating area of the bonding agent is not less than 40% of the whole area of the heat-insulating plate 5; then, the heat insulation board 5 is inserted into the corresponding bearing groove 43, so that the heat insulation board 5 is bonded and fixed with the elastic buffer layer 3 and the bearing frame 4 through the adhesive. In the process of pasting, the certificate of the heat-insulating plate 5 is guaranteed as much as possible, the connected heat-insulating plates 5 are close as much as possible, and the seam is guaranteed to be as small as possible.
S4, coating the heat-insulating layer with a finishing mortar uniformly on the side facing away from the bearing frame 4, and laying a mesh cloth 62 in the finishing mortar.
In the construction, after the step S3 is finished, the surface of the heat insulation board 5 departing from the elastic buffer layer 3 is polished at intervals of 24 hours; specifically, unevenness at the joint is ground by a grinding plate, and a running rule is used for checking to ensure that the flatness of the whole heat-insulating layer is not more than 4mm/2 m. When in polishing, scattered scraps should be cleaned by a brush, a broom or compressed air at any time. Next, the gaps between the adjacent insulation boards 5 are filled with bonding and plastering mortar and are leveled, so that the gaps between the adjacent insulation boards 5 are effectively blocked.
Then, uniformly coating a layer of bonding surface mortar on the heat insulation layer; before the mortar is solidified, a layer of grid cloth 62 is laid on the bonding surface mortar; then a layer of bonding plastering mortar is uniformly coated on the mesh cloth 62. At this time, the mesh cloth 62 and the bonding and plastering mortar covering the mesh cloth 62 together form the reinforcing layer 6, which can improve the structural stability of each insulation board 5 and protect the insulation board 5. Finally, one side of the reinforcing layer 6, which is far away from the heat-insulating layer, can be uniformly coated with a layer of exterior wall coating to form a decorative layer 7, so that the attractiveness of the prefabricated exterior wall can be improved, and the wet operation of an assembly site can be reduced.
The above embodiments are merely illustrative and not restrictive, and those skilled in the art can modify the above embodiments without any inventive contribution as required after reading this specification, but only protected by the following claims.

Claims (1)

1. A prefabricated external wall external thermal insulation structure comprises a prefabricated concrete wall panel (1) and a thermal insulation layer, and is characterized in that a bearing frame (4) is fixedly arranged on the outer side of the prefabricated concrete wall panel (1), and a bearing groove (43) is formed in one side, deviating from the prefabricated concrete wall panel (1), of the bearing frame (4); the heat-insulating layer is fixedly embedded in the bearing groove (43), and a reinforcing layer (6) is further arranged on one side of the heat-insulating layer, which is far away from the bearing frame (4); a plurality of bearing grooves (43) are arranged on the bearing frame (4) at intervals in parallel; the heat insulation layer comprises a plurality of heat insulation plates (5), and the heat insulation plates (5) are embedded in the bearing grooves (43) in a one-to-one correspondence manner;
the bearing frame (4) comprises a plurality of steel members which are arranged in parallel at intervals, and any two adjacent steel members enclose a bearing groove (43);
a plurality of anchor rods (44) are fixed on one side of the steel member close to the precast concrete wall panel (1) at intervals along the length direction of the steel member, and each anchor rod (44) is poured and fixed in the precast concrete wall panel (1);
an elastic buffer layer (3) is further fixed between the bearing frame (4) and the precast concrete wallboard (1), and a plurality of bonding bulges (31) are uniformly formed on one side, close to the precast concrete wallboard (1), of the elastic buffer layer (3);
the reinforcing layer (6) comprises a plastering mortar layer (61) which is uniformly coated on one side of the heat-insulating layer, which is far away from the bearing frame (4), and a grid cloth (62) which is uniformly laid in the plastering mortar layer (61);
the side, away from the heat-insulating layer, of the reinforcing layer (6) is also uniformly coated with a decorative layer (7);
a water stopping groove (101) is formed in the bottom surface of the precast concrete wall panel (1) in an inwards concave mode; a plurality of connecting sleeves (2) which are right opposite to the water stopping grooves (101) are pre-buried in the precast concrete wall board (1), and the connecting sleeves (2) are uniformly arranged at intervals along the extending direction of the water stopping grooves (101); the anchor rods (44) vertically penetrate through the elastic buffer layer (3) and extend into the precast concrete wall panel (1); the anchor rods (44) are poured and fixed in the precast concrete wall panel (1), so that stable installation of the steel member is realized; after the steel members are installed, a bearing groove (43) is formed between any two adjacent steel members;
the construction of the heat insulation structure comprises the following steps:
s1, erecting a formwork and pouring concrete;
s2, before concrete is solidified, arranging a bearing frame (4) on the inner side of the mould, so that the bearing frame (4) is poured and fixed on the surface of the precast concrete wallboard (1);
s3, paving a heat-insulating layer in the bearing groove (43) on the bearing frame (4);
s4, uniformly coating plastering mortar on the side, away from the bearing frame (4), of the heat insulation layer, and paving a mesh cloth (62) in the plastering mortar;
after step S1 is completed and before step S2 is started, the following steps should be performed: before the concrete is condensed, an elastic buffer layer (3) is laid on the surface of the concrete;
in step S2, the bearing bracket (4) is arranged on the side of the elastic buffer layer (3) facing away from the precast concrete wall panel (1); a plurality of anchor rods (44) are fixed on one side, close to the elastic buffer layer (3), of the bearing frame (4), and the anchor rods (44) penetrate through the elastic buffer layer (3) and extend into concrete.
CN201910474530.2A 2019-06-03 2019-06-03 Prefabricated external wall external thermal insulation structure and construction method thereof Active CN110284617B (en)

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CN111197379A (en) * 2020-01-14 2020-05-26 山东乾宇建筑节能科技有限公司 Assembly type composite heat-insulation wall structure and assembly method
CN112323962A (en) * 2020-10-28 2021-02-05 浙江华特装饰股份有限公司 Finished product drip for outer wall window and construction method thereof

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202013103884U1 (en) * 2013-08-28 2013-10-09 Pavel Kuban Mounting strip of a heat-insulating system
CN206512871U (en) * 2017-02-10 2017-09-22 齐齐哈尔大学 A kind of external wall insulation fixture
CN207194350U (en) * 2017-06-01 2018-04-06 江苏工程职业技术学院 A kind of steel frame type exterior insulation compound plate of outer wall wall
CN108265878A (en) * 2018-04-02 2018-07-10 沈阳建筑大学 A kind of prefabricated no heat bridge outer insulated wall plate of C-type steel lightgage steel joist and preparation method thereof
CN208473026U (en) * 2018-07-10 2019-02-05 深圳市森磊装饰设计工程有限公司 The self-contained structure of wall facing

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