CN111608281A - Construction method of wall-penetrating pipeline - Google Patents
Construction method of wall-penetrating pipeline Download PDFInfo
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- CN111608281A CN111608281A CN202010471147.4A CN202010471147A CN111608281A CN 111608281 A CN111608281 A CN 111608281A CN 202010471147 A CN202010471147 A CN 202010471147A CN 111608281 A CN111608281 A CN 111608281A
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/76—Heat, 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
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/66—Sealings
- E04B1/68—Sealings of joints, e.g. expansion joints
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/66—Sealings
- E04B1/68—Sealings of joints, e.g. expansion joints
- E04B1/6806—Waterstops
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L5/00—Devices for use where pipes, cables or protective tubing pass through walls or partitions
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L5/00—Devices for use where pipes, cables or protective tubing pass through walls or partitions
- F16L5/02—Sealing
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/90—Passive houses; Double facade technology
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Acoustics & Sound (AREA)
- Building Environments (AREA)
Abstract
The invention provides a construction method of a through-wall pipeline, which effectively enhances the connection strength of a first heat preservation layer and the concrete layer by fixedly connecting the first heat preservation layer with a steel bar structure in the concrete layer, and simultaneously a concrete pouring area is formed by a template, the first heat preservation layer and a turnover preset part, so that the concrete layer obtained after pouring is in close contact with all parts of the first heat preservation layer, the concrete layer and the first heat preservation layer are fully adhered, and the first heat preservation material is prevented from falling off from the concrete layer; in addition, the construction method applies the turnover preset part to the construction process of the wall-penetrating pipeline structure in the field of building energy conservation, ensures that the wall has good heat bridge cutoff effect and excellent air tightness, and has the advantages of simple construction process and short period.
Description
Technical Field
The invention relates to the technical field of building energy conservation, in particular to a construction method of a wall-through pipeline.
Background
The building energy saving specifically refers to executing an energy saving standard in the planning, designing, newly building, transforming and using processes of buildings, adopting energy saving technology, process, equipment, materials and products, improving the heat preservation and insulation performance and the efficiency of heating and heating systems, air-conditioning refrigeration and heating systems, enhancing the operation management of energy systems for the buildings, utilizing renewable energy sources, increasing the heat exchange resistance of indoor and outdoor energy on the premise of ensuring the quality of indoor thermal environment, and reducing the energy consumption generated by a heating system, air-conditioning refrigeration and heating, illumination and hot water supply due to large heat consumption.
The heat bridge can reduce the heat insulation performance of the house, thereby causing energy waste and loss; the wall-through pipe is taken as an indispensable component in the house building, and people pay more attention to how to avoid a heat bridge caused by the installation of the wall-through pipe. Chinese patent CN110285267 discloses a construction method for a passive house heat-bridge-free high-air-tightness outer wall penetrating pipeline, which is characterized in that a sleeve is preset on a concrete layer, a line pipe extends into the sleeve, a waterproof vapor-barrier film and a waterproof breathable strip are respectively arranged on two sides of the line pipe, and then a heat-insulating material is pasted on one side of the concrete layer, so that the passive house heat-bridge-free high-air-tightness outer wall penetrating pipeline is obtained. However, the construction method enables the heat insulation effect of the wall body to greatly depend on the construction field management degree and the construction level of workers, when the heat insulation material is not adhered firmly enough, along with the climate change, the temperature change and the time increase, the heat insulation material has higher and higher falling risks, so that a heat bridge is formed at the falling part, and the heat insulation effect of the wall body is seriously influenced.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to overcome the defect that the heat-insulating material in the wall-through pipeline structure falls off, thereby providing a construction method of the wall-through pipeline.
The invention provides a construction method of a through-wall pipeline, which comprises the following steps:
(1) forming a steel bar structure, fixing a wall bushing in the steel bar structure, and enabling the outer end part of the wall bushing to be flush with the outer side surface of the steel bar structure;
(2) fixedly connecting a first heat-insulating layer to the outer side surface of the steel bar structure, reserving a region without heat-insulating materials around the outer end part of the wall bushing, and placing a turnover preset part in the region without heat-insulating materials to fill the region;
(3) the side of the first heat preservation layer, which is far away from the steel bar structure, and the side of the steel bar structure, which is far away from the first heat preservation layer, are respectively provided with a template;
(4) pouring concrete into the steel bar structure, forming a concrete layer after the concrete layer is hardened, dismantling the template and removing the turnover preset part;
(5) the wall penetrating pipe extends into the wall penetrating sleeve and penetrates through the first heat insulation layer to extend to the outside, and a second heat insulation material is filled between the wall penetrating pipe and the sleeve to form a second heat insulation layer;
(6) and filling a first heat-insulating material in the area without the heat-insulating material and tightly attaching the first heat-insulating material to the first heat-insulating layer to form the heat-insulating wall.
Further, the first heat preservation layer is fixedly connected with the steel bar structure by a method that the first heat preservation material is connected to the steel bar structure through a fastener;
the turnaround preset is smooth surfaced and coated with a surfactant to facilitate removal of the turnaround preset after the concrete layer has hardened.
Further, the first heat preservation layer is formed by splicing a plurality of first heat preservation materials, and a zigzag joint mark is formed at the splicing position in a direction perpendicular to the first heat preservation layer.
Further, the fastener is an anchor bolt;
the number of the turnover preset pieces can be 1, and the turnover preset pieces can also be formed by splicing a plurality of sub-turnover preset pieces.
Furthermore, the first heat-preservation material is provided with a buckle structure, and a plurality of adjacent first heat-preservation materials are meshed in a staggered mode to form a first heat-preservation layer.
Further, after the wall penetrating pipe extends into the wall penetrating sleeve and penetrates through the first heat preservation layer to extend to the outside, the method also comprises the step of arranging a waterproof steam-insulation film on one side of the wall penetrating sleeve away from the first heat preservation layer and on the outer wall of the wall penetrating pipe positioned on the side and extending to the outside of the concrete layer;
before the heat-insulating material is filled in the area without the heat-insulating material and is tightly attached to the first heat-insulating layer to form the heat-insulating wall, the method further comprises the step of arranging a waterproof and breathable film on one side of the wall-penetrating sleeve close to the first heat-insulating layer and on the outer wall of the wall-penetrating pipe which is positioned on the side and extends out of the concrete layer.
Further, when the area without the heat insulation material is filled with a first heat insulation material and is tightly attached to the first heat insulation layer to form the heat insulation wall, the method further comprises the step of arranging a pre-pressing expansion sealing belt at the joint of the wall penetrating pipe and the first heat insulation layer.
Further, when the area without the heat insulation material is filled with a first heat insulation material and is tightly attached to the first heat insulation layer to form the heat insulation wall, the method further comprises the step of arranging a sealant on the outer side of the joint of the wall penetrating pipe and the first heat insulation layer.
Further, the construction method of the wall-through pipeline further comprises the steps of forming a rendering coat on one side, away from the concrete layer, of the first heat preservation layer;
and forming a plastering layer on one side of the concrete layer far away from the first heat-insulating layer and the outer wall of the wall penetrating pipe positioned on the side and extending to the outside of the concrete layer, wherein the plastering layer is covered with a waterproof and steam-proof film.
Further, the forming step of the rendering coat is as follows: after coating the rendering coat mortar, pressing the alkali-resistant glass fiber net into the middle of the rendering coat mortar to form a first mortar layer, an alkali-resistant glass fiber net and a second mortar layer which are arranged in a stacked manner; or after the first adhesive cement layer is coated, placing the alkali-resistant glass fiber net on the surface of the first adhesive cement layer, and coating a second adhesive cement layer on the alkali-resistant glass fiber net.
Furthermore, the thickness of the plastering layer is 3-6 mm.
Further, before a plastering layer is formed on the outer wall of the wall penetrating pipe extending out of the concrete layer, a step of arranging a third heat insulation layer on the outer wall of the wall penetrating pipe extending out of the concrete layer is also included, and the third heat insulation layer covers a waterproof steam-proof film.
Further, the first heat-insulating layer is made of graphite polystyrene boards, extruded polystyrene boards, molded polystyrene boards, extruded graphite boards or heat-insulating composite boards;
the second insulating layer is made of special insulating cotton for pipelines, rock wool felt, rubber and plastic insulation or polyurethane;
the third heat-insulating material is the same as the second heat-insulating layer in material;
the wall penetrating pipe is a PVC pipe or a PP pipe.
The invention also provides a wall-penetrating pipeline structure which is manufactured by adopting the construction method.
The technical scheme of the invention has the following advantages:
according to the construction method of the through-wall pipeline, the first heat preservation layer is fixedly connected with the steel bar structure in the concrete layer, so that the connection strength of the first heat preservation layer and the concrete layer is effectively enhanced, meanwhile, the template, the first heat preservation layer and the turnover preset part form a concrete pouring area, the concrete layer obtained after pouring is in close contact with the first heat preservation layer, the concrete layer and the first heat preservation layer are fully adhered, and therefore the first heat preservation material is prevented from falling off from the concrete layer; in addition, the construction method fills the area without the heat insulation materials in the turnover preset part before the concrete is poured to be spliced with the first heat insulation layer, removes the turnover preset part after the concrete is poured, fills the first heat insulation materials, and has the advantages of simple construction process and short period while ensuring that the wall body has good heat bridge breaking effect and excellent air tightness when the turnover preset part is used in the construction process of the wall-through pipeline structure in the field of building energy conservation.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic structural view of a wall-penetrating pipe structure provided in embodiment 3 of the present invention;
description of the drawings:
1-a concrete layer; 2-a wall bushing; 3-a wall penetrating pipe; 4-a first insulating layer; 5-a second insulating layer; 6-a third insulating layer; 7-waterproof vapor barrier film; 8-waterproof vapor-permeable membrane; 9-prepressing an expansion sealing tape; 10-sealing glue; 11-a finishing layer.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The materials used are not indicated by manufacturers, and are all conventional products which can be obtained commercially.
Example 1
The embodiment provides a construction method of a wall-through pipeline, which comprises the following steps:
(1) forming a steel bar structure, fixing the wall bushing 2 in the steel bar structure, and enabling the outer end part of the wall bushing 2 to be flush with the outer side surface of the steel bar structure;
(2) fixedly connecting a first heat-insulating layer 4 to the outer side surface of the steel bar structure and enabling the first heat-insulating layer to be flush with the outer end part of the wall bushing 2, reserving a region without heat-insulating materials around the outer end part of the wall bushing 2, and placing a turnover preset part in the region without heat-insulating materials to fill the region;
it should be understood that the outer end of the wall bushing 2 may also extend 10-35 mm outside the steel bar structure, so that the steel bar structure is embedded into the formed concrete layer 1;
specifically, the first heat-insulating material is connected to the steel bar structure through a fastener, and the fastener is an anchor bolt; the turnover preset parts are made of at least one of metal, wood, PP, PE, ABS and PC, the surfaces of the turnover preset parts are smooth, and a surfactant is coated on the turnover preset parts, so that the turnover preset parts can be removed after the concrete layer 1 is hardened, the number of the turnover preset parts is 1, and the size of the turnover preset parts is the same as that of the turnover preset parts in the area where the heat insulation material is not placed; the first heat-insulating layer 4 is formed by splicing a plurality of square first heat-insulating materials, the first heat-insulating materials comprise but are not limited to graphite polystyrene boards, extruded polystyrene boards, molded polystyrene boards, extruded graphite boards or heat-insulating composite boards, and other materials with good heat-insulating effect are also suitable for the structure;
(3) the side, far away from the steel bar structure, of the first heat preservation layer 4 and the side, far away from the first heat preservation layer 4, of the steel bar structure are respectively provided with a template, and the two templates, the first heat preservation layer 4 and the turnover preset parts form a concrete pouring area;
(4) pouring concrete into the steel bar structure, forming a concrete layer after the concrete is hardened, dismantling the template and removing the turnover preset part to form the concrete layer 1;
(5) the wall penetrating pipe 3 extends into the wall penetrating sleeve 2 and penetrates through the first heat preservation layer 4 to extend outside, a second heat preservation material is filled between the wall penetrating pipe 3 and the wall penetrating sleeve 2 to form a second heat preservation layer 5, the material of the second heat preservation layer 5 is not limited to special heat preservation cotton for pipelines, rock wool felt, rubber and plastic heat preservation or polyurethane, and other materials with good heat preservation effects are also suitable for the structure; the wall penetrating pipe 3 can be a PVC pipe or a PP pipe, and other pipes made of suitable materials can also be used for the wall penetrating pipe;
(6) one side that wall bushing 2 kept away from first heat preservation 4 and be located this side and extend to concrete layer 1 outside on the outer wall of wall bushing 3 set up waterproof vapor barrier membrane 7, be close to one side of first heat preservation 4 and be located this side and extend to concrete layer 1 outside on the outer wall of wall bushing 3 set up waterproof vapor permeable membrane 8.
The waterproof vapor-barrier film has excellent water vapor isolation capability and prevents moisture from invading the wall body; the waterproof and breathable film has wind resistance, waterproofness and breathability, allows moisture entering the interior of the external wall heat insulation system to be discharged, and achieves the purpose of moisture prevention. The two are matched to be used, so that the generation of mould and condensed water in an external wall heat insulation system can be effectively avoided, and the service life of a building is prolonged.
(7) And filling a first heat-insulating material in the area without the heat-insulating material and tightly attaching the first heat-insulating material to the first heat-insulating layer 4 to form the heat-insulating wall.
(8) Arranging a prepressing expansion sealing strip 9 at the joint of the wall penetrating pipe 3 and the first heat preservation layer 4, and arranging a sealant 10 outside the prepressing expansion sealing strip 9;
the prepressing expansion sealing tape 9 has the characteristic of decompression expansion, and has good sealing performance and waterproofness when being used at the joint of a pipeline and a heat insulation material; the sealant 10 can be an expansion sealant which has strong bonding force, large tensile strength and good seepage-proofing and leakage-proofing effects. The waterproof steam-insulating film 7, the waterproof steam-permeable film 8, the pre-pressed expansion sealing strip 9 and the sealant 10 are mutually matched, so that the heat-insulating system has a good waterproof effect, and the wall body cannot leak rainwater even under the condition of storm.
(9) Forming a rendering coat 11 on one side of the first heat preservation layer 4 far away from the concrete layer 1; forming a rendering coat 11 on one side of the concrete layer 1 far away from the first heat preservation layer 4 and the outer wall of the wall penetrating pipe 3 positioned on the side and extending out of the concrete layer 1, wherein the rendering coat 11 covers the waterproof and steam-proof membrane 7; specifically, the forming step of the rendering coat 11 is: and pressing the alkali-resistant glass fiber net into the middle of the rendering coat mortar after the rendering coat mortar is coated to form a first mortar layer, an alkali-resistant glass fiber net and a second mortar layer which are arranged in a stacked mode, wherein the thickness of the rendering coat layer 11 is 3 mm. The finishing layer 11 is used to protect the first thermal insulation layer 4, prevent the first thermal insulation layer 4 from cracking, and improve the impact resistance and durability.
According to the wall-through pipeline structure obtained by the construction method, the first heat-insulating material is not easy to fall off, the concrete layer is in close contact with the first heat-insulating layer at each position, and the wall-through pipeline structure has a good heat-bridge-cutoff effect and excellent air tightness, so that the heat-insulating effect is excellent, and the heat-insulating requirements of passive buildings and other energy-saving buildings can be met.
Example 2
The embodiment provides a construction method of a wall-through pipeline, which comprises the following steps:
(1) forming a steel bar structure, fixing the wall bushing 2 in the steel bar structure, and enabling the outer end part of the wall bushing 2 to be flush with the outer side surface of the steel bar structure;
(2) fixedly connecting a first heat-insulating layer 4 to the outer side surface of the steel bar structure and enabling the first heat-insulating layer to be flush with the outer end part of the wall bushing 2, reserving a region without heat-insulating materials around the outer end part of the wall bushing 2, and placing a turnover preset part in the region without heat-insulating materials to fill the region;
it will be appreciated that the outer end of the wall bushing 2 may also extend 10-35 mm outside the rebar structure to embed the rebar structure into the formed concrete layer 1.
Specifically, the first heat-insulating material is connected to the steel bar structure through a fastener, and the fastener is an anchor bolt; the turnover preset part is made of at least one of metal, wood, PP, PE, ABS and PC, the surface of the turnover preset part is smooth, and a surfactant is coated on the turnover preset part, so that the turnover preset part can be conveniently removed after the concrete layer 1 is hardened, the turnover preset part is formed by splicing a plurality of sub-turnover preset parts, and the size of the turnover preset part is the same as that of the turnover preset part in a region where the heat-insulating material is not placed;
further, as shown in fig. 1, the first heat-insulating layer 4 is formed by splicing a plurality of first heat-insulating materials, and a zigzag joint mark is formed at the spliced position along a direction perpendicular to the first heat-insulating layer; specifically, the zigzag seam may be formed by a mortise and tenon structure; this connected mode is favorable to strengthening the connection stability of first heat preservation material on the one hand and makes the concatenation of first heat preservation 4 more firm, and on the other hand can realize the fissure of displacement processing on first heat preservation to reduce the cold bridge of first heat preservation material junction, and prolonged the heat and circulated to outdoor route along the junction, thereby guaranteed the heat preservation effect on first heat preservation. The first heat insulation material comprises but is not limited to graphite polystyrene board, extruded polystyrene board, molded polystyrene board, extruded graphite board or heat insulation composite board, and other materials with good heat insulation effect are also suitable for the structure;
(3) the side, far away from the steel bar structure, of the first heat preservation layer 4 and the side, far away from the first heat preservation layer 4, of the steel bar structure are respectively provided with a template, and the two templates, the first heat preservation layer 4 and the turnover preset parts form a concrete pouring area;
(4) pouring concrete into the steel bar structure, forming a concrete layer after the concrete is hardened, dismantling the template and removing the turnover preset part to form the concrete layer 1;
(5) the wall penetrating pipe 3 extends into the wall penetrating sleeve 2 and penetrates through the first heat preservation layer 4 to extend outside, a second heat preservation material is filled between the wall penetrating pipe 3 and the wall penetrating sleeve 2 to form a second heat preservation layer 5, the material of the second heat preservation layer 5 is not limited to special heat preservation cotton for pipelines, rock wool felt, rubber and plastic heat preservation or polyurethane, and other materials with good heat preservation effects are also suitable for the structure; the wall penetrating pipe 3 can be a PVC pipe or a PP pipe, and other pipes made of suitable materials can also be used for the wall penetrating pipe;
(6) one side that wall bushing 2 kept away from first heat preservation 4 and be located this side and extend to concrete layer 1 outside on the outer wall of wall bushing 3 set up waterproof vapor barrier membrane 7, be close to one side of first heat preservation 4 and be located this side and extend to concrete layer 1 outside on the outer wall of wall bushing 3 set up waterproof vapor permeable membrane 8.
The waterproof vapor-barrier film has excellent water vapor isolation capability and prevents moisture from invading the wall body; the waterproof and breathable film has wind resistance, waterproofness and breathability, allows moisture entering the interior of the external wall heat insulation system to be discharged, and achieves the purpose of moisture prevention. The two are matched to be used, so that the generation of mould and condensed water in an external wall heat insulation system can be effectively avoided, and the service life of a building is prolonged.
(7) And filling a first heat-insulating material in the area without the heat-insulating material and tightly attaching the first heat-insulating material to the first heat-insulating layer 4 to form the heat-insulating wall.
(8) Arranging a prepressing expansion sealing strip 9 at the joint of the wall penetrating pipe 3 and the first heat preservation layer 4, and arranging a sealant 10 outside the prepressing expansion sealing strip 9;
the prepressing expansion sealing tape 9 has the characteristic of decompression expansion, and has good sealing performance and waterproofness when being used at the joint of a pipeline and a heat insulation material; the sealant 10 can be an expansion sealant which has strong bonding force, large tensile strength and good seepage-proofing and leakage-proofing effects. The waterproof steam-insulating film 7, the waterproof steam-permeable film 8, the pre-pressed expansion sealing strip 9 and the sealant 10 are mutually matched, so that the heat-insulating system has a good waterproof effect, and the wall body cannot leak rainwater even under the condition of storm.
(9) Forming a rendering coat 11 on one side of the first heat preservation layer 4 far away from the concrete layer 1; forming a rendering coat 11 on one side of the concrete layer 1 far away from the first heat preservation layer 4 and the outer wall of the wall penetrating pipe 3 positioned on the side and extending out of the concrete layer 1, wherein the rendering coat 11 covers the waterproof and steam-proof membrane 7; specifically, the forming step of the rendering coat 11 is: after the first adhesive cement layer is coated, the alkali-resistant glass fiber net is placed on the surface of the first adhesive cement layer, a second adhesive cement layer is coated on the alkali-resistant glass fiber net, and the thickness of the plastering layer 11 is 6 mm. The finishing layer 11 is used to protect the first thermal insulation layer 4, prevent the first thermal insulation layer 4 from cracking, and improve the impact resistance and durability.
According to the wall-through pipeline structure obtained by the construction method, the first heat-insulating material is not easy to fall off, the concrete layer is in close contact with the first heat-insulating layer at each position, and the wall-through pipeline structure has a good heat-insulating bridge effect and excellent air tightness, so that the heat-insulating effect is excellent, and the heat-insulating requirements of passive buildings and other energy-saving buildings can be met.
Example 3
The embodiment provides a construction method of a wall-through pipeline, which comprises the following steps:
(1) forming a steel bar structure, fixing the wall bushing 2 in the steel bar structure, and enabling the outer end part of the wall bushing 2 to be flush with the outer side surface of the steel bar structure;
(2) fixedly connecting a first heat-insulating layer 4 to the outer side surface of the steel bar structure and enabling the first heat-insulating layer to be flush with the outer end part of the wall bushing 2, reserving a region without heat-insulating materials around the outer end part of the wall bushing 2, and placing a turnover preset part in the region without heat-insulating materials to fill the region;
it should be understood that the outer end of the wall bushing 2 may also extend 10-35 mm outside the steel bar structure, so that the steel bar structure is embedded into the formed concrete layer 1;
specifically, the first heat-insulating material is connected to the steel bar structure through a fastener, and the fastener is an anchor bolt; the turnover preset part is made of at least one of metal, wood, PP, PE, ABS and PC, the surface of the turnover preset part is smooth, and a surfactant and a release agent are coated on the turnover preset part, so that the turnover preset part can be removed after the concrete layer 1 is hardened, the turnover preset part is formed by splicing a plurality of sub-turnover preset parts, and the size of the turnover preset part is the same as that of the turnover preset part in a region where no heat insulation material is placed;
further, as shown in fig. 1, the first heat-insulating layer 4 includes a plurality of first heat-insulating materials having a mortise and tenon structure, and a plurality of adjacent first heat-insulating materials are connected by the mortise and tenon structure to form the first heat-insulating layer; this connected mode is favorable to strengthening the connection stability of first heat preservation material on the one hand and makes the concatenation of first heat preservation 4 more firm, and on the other hand can realize the fissure of displacement processing on first heat preservation to reduce the cold bridge of first heat preservation material junction, thereby guaranteed the heat preservation effect on first heat preservation. The first heat insulation material comprises but is not limited to graphite polystyrene board, extruded polystyrene board, molded polystyrene board, extruded graphite board or heat insulation composite board, and other materials with good heat insulation effect are also suitable for the structure;
(3) the side, far away from the steel bar structure, of the first heat preservation layer 4 and the side, far away from the first heat preservation layer 4, of the steel bar structure are respectively provided with a template, and the two templates, the first heat preservation layer 4 and the turnover preset parts form a concrete pouring area;
(4) pouring concrete into the steel bar structure, forming a concrete layer after the concrete is hardened, dismantling the template and removing the turnover preset part to form the concrete layer 1;
(5) the wall penetrating pipe 3 extends into the wall penetrating sleeve 2 and penetrates through the first heat preservation layer 4 to extend outside, a second heat preservation material is filled between the wall penetrating pipe 3 and the wall penetrating sleeve 2 to form a second heat preservation layer 5, the material of the second heat preservation layer 5 is not limited to special heat preservation cotton for pipelines, rock wool felt, rubber and plastic heat preservation or polyurethane, and other materials with good heat preservation effects are also suitable for the structure; the wall penetrating pipe 3 can be a PVC pipe or a PP pipe, and other pipes made of suitable materials can also be used for the wall penetrating pipe;
(6) one side that wall bushing 2 kept away from first heat preservation 4 and be located this side and extend to concrete layer 1 outside on the outer wall of wall bushing 3 set up waterproof vapor barrier membrane 7, be close to one side of first heat preservation 4 and be located this side and extend to concrete layer 1 outside on the outer wall of wall bushing 3 set up waterproof vapor permeable membrane 8.
The waterproof vapor-barrier film has excellent water vapor isolation capability and prevents moisture from invading the wall body; the waterproof and breathable film has wind resistance, waterproofness and breathability, allows moisture entering the interior of the external wall heat insulation system to be discharged, and achieves the purpose of moisture prevention. The two are matched to be used, so that the generation of mould and condensed water in an external wall heat insulation system can be effectively avoided, and the service life of a building is prolonged.
(7) And filling a first heat-insulating material in the area without the heat-insulating material and tightly attaching the first heat-insulating material to the first heat-insulating layer 4 to form the heat-insulating wall.
(8) Arranging a prepressing expansion sealing strip 9 at the joint of the wall penetrating pipe 3 and the first heat preservation layer 4, and arranging a sealant 10 outside the prepressing expansion sealing strip 9;
the prepressing expansion sealing tape 9 has the characteristic of decompression expansion, and has good sealing performance and waterproofness when being used at the joint of a pipeline and a heat insulation material; the sealant 10 can be an expansion sealant which has strong bonding force, large tensile strength and good seepage-proofing and leakage-proofing effects. The waterproof steam-insulating film 7, the waterproof steam-permeable film 8, the pre-pressed expansion sealing strip 9 and the sealant 10 are mutually matched, so that the heat-insulating system has a good waterproof effect, and the wall body cannot leak rainwater even under the condition of storm.
(9) In order to further reduce indoor heat loss, a third heat-insulating layer 6 is arranged on the outer wall of the wall penetrating pipe 3 extending out of the concrete layer 1, and the third heat-insulating layer 6 covers a waterproof steam-insulating film 7; the third heat-insulating material is the same as the second heat-insulating layer in material.
(10) Forming a rendering coat 11 on one side of the first heat preservation layer 4 far away from the concrete layer 1; forming a rendering coat 11 on one side of the concrete layer 1 far away from the first heat preservation layer 4 and the outer wall of the wall penetrating pipe 3 positioned on the side and extending out of the concrete layer 1, wherein the rendering coat 11 covers the waterproof and steam-proof membrane 7; specifically, the forming step of the rendering coat 11 is: and pressing the alkali-resistant glass fiber net into the middle of the rendering adhesive after the rendering adhesive is coated to form a first adhesive layer, an alkali-resistant glass fiber net and a second adhesive layer which are arranged in a stacked manner. The finishing layer 11 is used to protect the first thermal insulation layer 4, prevent the first thermal insulation layer 4 from cracking, and improve the impact resistance and durability.
According to the wall-through pipeline structure obtained by the construction method, the first heat-insulating material is not easy to fall off, the concrete layer is in close contact with the first heat-insulating layer at each position, and the wall-through pipeline structure has a good heat-bridge-cutoff effect and excellent air tightness, so that the heat-insulating effect is excellent, and the heat-insulating requirements of passive buildings and other energy-saving buildings can be met.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (10)
1. A construction method of a wall-through pipeline is characterized by comprising the following steps:
(1) forming a steel bar structure, fixing a wall bushing in the steel bar structure, and enabling the outer end part of the wall bushing to be flush with the outer side surface of the steel bar structure;
(2) fixedly connecting a first heat-insulating layer to the outer side surface of the steel bar structure, reserving a region without heat-insulating materials around the outer end part of the wall bushing, and placing a turnover preset part in the region without heat-insulating materials to fill the region;
(3) the side of the first heat preservation layer, which is far away from the steel bar structure, and the side of the steel bar structure, which is far away from the first heat preservation layer, are respectively provided with a template;
(4) pouring concrete into the steel bar structure, forming a concrete layer after the concrete layer is hardened, dismantling the template and removing the turnover preset part;
(5) the wall penetrating pipe extends into the wall penetrating sleeve and penetrates through the first heat insulation layer to extend to the outside, and a second heat insulation material is filled between the wall penetrating pipe and the sleeve to form a second heat insulation layer;
(6) and filling a first heat-insulating material in the area without the heat-insulating material and tightly attaching the first heat-insulating material to the first heat-insulating layer to form the heat-insulating wall.
2. A method of constructing a through-wall duct according to claim 1, wherein the first insulating layer is fixedly attached to the rebar structure by attaching the first insulating material to the rebar structure with fasteners.
3. The construction method of the through-wall pipeline according to claim 1 or 2, wherein the first heat-insulating layer is formed by splicing a plurality of first heat-insulating materials, and the spliced part forms a zigzag joint mark along a direction vertical to the first heat-insulating layer.
4. A construction method of a wall-penetrating pipe according to any one of claims 1 to 3, wherein after the wall-penetrating pipe is inserted into the wall-penetrating casing and extends to the outside through the first heat-insulating layer, a step of arranging a waterproof and steam-proof film on one side of the wall-penetrating casing away from the first heat-insulating layer and on the outer wall of the wall-penetrating pipe located on the side and extending to the outside of the concrete layer is further included;
before the area without the heat-insulating material is filled with a first heat-insulating material and is tightly attached to the first heat-insulating layer to form the heat-insulating wall, the method further comprises the step of arranging a waterproof and breathable film on one side of the wall-penetrating sleeve close to the first heat-insulating layer and on the outer wall of the wall-penetrating pipe which is positioned on the side and extends out of the concrete layer.
5. The method for constructing the through-wall pipeline according to claim 4, wherein when the area without the thermal insulation material is filled with the first thermal insulation material and is tightly attached to the first thermal insulation layer to form the thermal insulation wall, the method further comprises the step of arranging a pre-pressed expansion sealing tape at the joint of the through-wall pipe and the first thermal insulation layer.
6. The construction method of the through-wall pipeline according to claim 5, wherein when the area without the thermal insulation material is filled with the first thermal insulation material and is tightly attached to the first thermal insulation layer to form the thermal insulation wall, the construction method further comprises the step of arranging a sealant outside the joint of the through-wall pipe and the first thermal insulation layer.
7. The construction method of the through-wall pipeline is characterized by further comprising the steps of forming a plastering layer on one side, far away from the concrete layer, of the first heat preservation layer;
and forming a plastering layer on one side of the concrete layer far away from the first heat-insulating layer and the outer wall of the wall penetrating pipe positioned on the side and extending to the outside of the concrete layer, wherein the plastering layer covers the waterproof and steam-proof film.
8. A method of constructing a through-wall conduit according to claim 7, wherein the method of forming the render coat comprises the steps of:
after coating the rendering coat mortar, pressing the alkali-resistant glass fiber net into the middle of the rendering coat mortar to form a first mortar layer, an alkali-resistant glass fiber net and a second mortar layer which are arranged in a stacked manner; or the like, or, alternatively,
and after the first adhesive cement layer is coated, placing the alkali-resistant glass fiber net on the surface of the first adhesive cement layer, and coating a second adhesive cement layer on the alkali-resistant glass fiber net.
9. The construction method of the through-wall pipe according to claim 7, further comprising a step of providing a third insulating layer on the outer wall of the through-wall pipe extending to the outside of the concrete layer, before forming a finishing layer on the outer wall of the through-wall pipe extending to the outside of the concrete layer, and the third insulating layer is covered with a waterproof and vapor-proof film.
10. A method of constructing a through-wall duct according to any one of claims 1 to 9,
the first heat-insulating layer is made of graphite polystyrene boards, extruded polystyrene boards, molded polystyrene boards, extruded graphite boards or heat-insulating composite boards;
the second heat-insulating layer is made of heat-insulating cotton special for pipelines, rock wool felt, rubber and plastic heat-insulating or polyurethane.
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