CN114382185A - Waterproof construction of horizontal seam crossing of prefabricated outer wall of assembled - Google Patents
Waterproof construction of horizontal seam crossing of prefabricated outer wall of assembled Download PDFInfo
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- CN114382185A CN114382185A CN202210086423.4A CN202210086423A CN114382185A CN 114382185 A CN114382185 A CN 114382185A CN 202210086423 A CN202210086423 A CN 202210086423A CN 114382185 A CN114382185 A CN 114382185A
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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
- E04B1/6801—Fillings therefor
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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
- E04B1/665—Sheets or foils impervious to water and water vapor
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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
- 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
- E04B1/6812—Compressable seals of solid form
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
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Abstract
The invention discloses a waterproof structure at a horizontal joint of an assembled prefabricated outer wall, wherein an upper prefabricated outer wall and a lower prefabricated outer wall are arranged at intervals, and the outer side of the upper prefabricated outer wall is provided with a wall tenon extending downwards; the beam prefabricating part is placed at the upper end of the lower prefabricated outer wall, and a beam tenon extending upwards is arranged on the inner side of the beam prefabricating part; the composite floor cast-in-place layer is positioned on the composite floor precast layer, the end part of one end of the composite floor cast-in-place layer extends out of the composite floor precast layer, a tongue-and-groove with low outside and high inside is formed between the wall tenon and the upper prefabricated outer wall as well as the beam prefabricated part and the beam tenon, and two ends of the tongue-and-groove are sealed. The upper tenon and the lower tenon of the waterproof rabbet are prefabricated together with the external wall panel, so that the problem of poor waterproof effect of the external wall caused by low construction precision in actual construction is effectively solved, the construction is simplified, the cost is saved, and the quality is improved; and the beam cast-in-place part and the laminated floor cast-in-place layer are cast in place together, so that the structural integrity is enhanced, and the waterproof effect of the outer wall is further improved.
Description
Technical Field
The invention relates to a waterproof structure of an outer wall of a building, in particular to a waterproof structure of a horizontal joint of an assembled prefabricated outer wall, and belongs to the field of assembly type building construction.
Background
According to the 'guide opinions on the rapid development of the assembly type building in the office of the state department', the assembly type building is formed by assembling prefabricated parts on a construction site. The development of the assembly type building is a great change of the construction mode, is an important measure for promoting the structural reform of the supply side and the novel urbanization development, is favorable for saving resource and energy, reducing construction pollution, improving labor production efficiency and quality safety level, and is favorable for promoting the deep integration of the building industry and the information-based industrialization, cultivating new kinetic energy of new industry and promoting the excess capacity of chemical solution. Therefore, the assembly type building is vigorously developed.
The outer wall of the fabricated building has a plurality of seams, and the waterproof performance is very important at the connecting nodes. Common waterproofing approaches can be divided into material waterproofing and construction waterproofing. The waterproof material refers to that the waterproof performance of the outer wall material and the sealant are applied to the joint for waterproofing; the water-proof structure is characterized in that a drainage cavity is reserved in the joint, and an opening is arranged on the surface of the joint to guide out the invaded water for water-proof. Due to the characteristics of the fabricated building, the waterproof effect of the joint cannot be ensured only by adopting a material waterproof strategy and depending on the surface sealing of the joint. Sealants exposed to the outside may also shrink and crack under the influence of environmental factors. Therefore, the effective joint waterproof design adopts a mode of combining material waterproof and structural waterproof according to the weather environment of the project.
The groove waterproof is a commonly used structural waterproof measure at the horizontal joint of the outer wall at present, namely, the joint is shaped with a groove with a low outer part and a high inner part, so that outdoor rainwater is prevented from permeating into the room. During construction, the rabbet at the upper part of the rabbet is prefabricated, the rabbet at the lower part of the rabbet is cast in situ with a formwork of the upper layer of the laminated floor slab, and because the formwork of the rabbet at the lower part of the rabbet is difficult, and the construction precision of a construction site is poor, the actual size and the design of the rabbet are greatly deviated, the rabbet at the upper part of the rabbet is not matched, and the waterproof performance of an outer wall is seriously influenced.
Disclosure of Invention
Aiming at the defects of the structural waterproof measures, the invention provides a waterproof structure at the horizontal joint of an assembled prefabricated outer wall, wherein the upper tenon and the lower tenon which form a waterproof rabbet are completely prefabricated, so that the problem of poor waterproof effect of the outer wall caused by low construction precision in actual construction is effectively solved; and the stepped outer wall is constructed, so that the length of the waterproof rabbet is shortened, the construction is simplified, the cost is saved, and the quality is improved.
The invention adopts the following technical scheme:
a waterproof structure at a horizontal joint of an assembled prefabricated outer wall comprises an upper prefabricated outer wall and a lower prefabricated outer wall which are arranged at intervals, wherein a wall tenon extending downwards is arranged on the outer side of the upper prefabricated outer wall; the beam is composed of a beam prefabricating part and a beam cast-in-place part, the beam prefabricating part is placed at the upper end of the lower prefabricated outer wall, and a beam tenon extending upwards is arranged on the inner side of the beam prefabricating part; the composite floor slab comprises a composite floor slab cast-in-place layer and a composite floor slab prefabricated layer, the composite floor slab cast-in-place layer is positioned on the composite floor slab prefabricated layer, the end part of one end of the composite floor slab cast-in-place layer extends out of the composite floor slab prefabricated layer, and the part of the composite floor slab cast-in-place layer extending out of the composite floor slab prefabricated layer is positioned at the upper end of the beam cast-in-place part; and a tongue-and-groove with low outside and high inside is formed between the wall tenon and the upper prefabricated outer wall as well as the beam prefabricated part and the beam tenon, and two ends of the tongue-and-groove are sealed.
In order to further achieve the purpose of the invention, preferably, the width of the wall tenon is more than 50mm, the height of the wall tenon is 50-130 mm, and the length of the wall tenon is the length of the upper prefabricated outer wall.
Preferably, the width of the beam tenon is more than 50mm, the height of the beam tenon is 50-130 mm, and the length of the beam tenon is the length of the upper prefabricated outer wall.
Preferably, the rabbet is in a step shape, and the cross section width is more than 20 mm.
Preferably, the horizontal sections of the wall tenon and the beam tenon are rectangular; the wall tenon and the beam tenon have the same height.
Preferably, the length of the end part of one end of the cast-in-place layer of the composite floor slab, which extends out of the prefabricated layer of the composite floor slab, is the width of the cast-in-place part of the beam.
Preferably, the width ratio range of the beam prefabricated part and the beam cast-in-place part is 1: 0.5-1: 3, and the height ratio range of the composite floor prefabricated layer and the composite floor cast-in-place layer is 1: 1-1: 2.
Preferably, the rabbet end comprises a rabbet outer end and a rabbet inner end, and the rabbet outer end is positioned at the lower end of the outer side of the upper prefabricated outer wall; the inner end of the rabbet is the other end of the outer end of the opening inner rabbet, and the inner end of the rabbet is connected with a composite floor cast-in-situ layer; the outer end of the rabbet is sequentially provided with a first sealant and a first foam strip from outside to inside, and the inner end of the rabbet is sequentially provided with a water stop strip, a second foam strip and a second sealant from outside to inside.
Preferably, the foam strip is a polyethylene foam strip, an expandable polyethylene foam strip or an ethylene-vinyl acetate copolymer foam strip; the sealant is silicone sealant, polyurethane sealant, polysulfide sealant, acrylic sealant or modified silicone sealant.
Preferably, the water stop strip is an ethylene propylene diene monomer rubber water stop strip, a BF rubber water stop strip or a BW rubber water stop strip.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, the upper prefabricated outer wall and the lower prefabricated outer wall are arranged at intervals, and the outer side of the upper prefabricated outer wall is provided with a wall tenon extending downwards; the beam prefabricating part is placed at the upper end of the lower prefabricated outer wall, and a beam tenon extending upwards is arranged on the inner side of the beam prefabricating part; forming a tongue-and-groove with low outside and high inside between the wall tenon and the upper prefabricated outer wall and between the beam prefabricated part and the beam tenon; the upper tenon and the lower tenon which form the waterproof rabbet are all prefabricated, so that the problem of poor construction precision of cast-in-place construction in a construction site is solved, and the waterproof effect of the outer wall is ensured.
2. According to the invention, the stepped structure is arranged on the inner side of the upper prefabricated outer wall, so that the beam cast-in-place part and the laminated floor cast-in-place layer can be cast in place together, the structural integrity is enhanced, and the waterproof effect of the outer wall is improved.
3. The upper tenon and the lower tenon of the waterproof rabbet are prefabricated together with the external wall panel, so that the problem of poor waterproof effect of the external wall caused by low construction precision in actual construction is effectively solved, and meanwhile, the construction is simplified, the cost is saved, and the quality is improved.
4. When the invention is in construction, the formwork below the beam cast-in-place part and the composite floor prefabricated layer form a template required by the integral casting of the composite floor cast-in-place layer and the beam cast-in-place part, the construction is convenient, and the time and the labor are saved.
Drawings
Fig. 1 is a schematic sectional view illustrating a waterproof structure at a horizontal joint of an assembled prefabricated exterior wall according to the present invention.
The figures show that:
1-upper prefabricated outer wall, 2-EPS foam strips, 3-silicone weather-resistant sealant, 4-beam prefabricated part, 5-lower prefabricated outer wall, 6-rubber water-stop strips, 7-EPS foam strips, 8-silicone weather-resistant sealant, 9-laminated floor slab cast-in-place layer, 10-laminated floor slab prefabricated layer, 11-beam cast-in-place part, 12-waterproof rabbet, 13-wall tenon and 14-beam tenon.
Detailed Description
For better understanding of the present invention, the present invention will be further described with reference to the accompanying drawings, but it should be noted that the present invention is not limited to the embodiments.
As shown in figure 1, the waterproof structure of the horizontal joint of the prefabricated outer wall of an assembly type comprises an upper prefabricated outer wall 1 and a lower prefabricated outer wall 5 which are arranged at intervals, beams are arranged at the intervals, and the outer side of the upper prefabricated outer wall 1 is provided with a wall tenon 13 extending downwards; the beam is formed by connecting a beam prefabricating part 4 and a beam cast-in-place part 11, the beam prefabricating part 4 is placed at the upper end of the lower prefabricated outer wall 5, and a beam tenon 14 extending upwards is arranged on the inner side of the beam prefabricating part 4; the composite floor slab is formed by connecting a composite floor slab cast-in-situ layer 9 and a composite floor slab prefabricated layer 10, wherein the composite floor slab cast-in-situ layer 9 is positioned on the composite floor slab prefabricated layer 10, the end part of one end of the composite floor slab cast-in-situ layer 9 extends out of the composite floor slab prefabricated layer 10, and the part of the composite floor slab cast-in-situ layer 9, which extends out of the composite floor slab prefabricated layer 10, is positioned at the upper end of a beam cast-in-situ part 11; preferably, the length of the end part of one end of the composite floor cast-in-place layer 9 extending out of the composite floor precast layer 10 is the width of the beam cast-in-place part 11; and a rabbet 12 with a low outer part and a high inner part is formed between the wall tenon 14 and the upper prefabricated outer wall 1, the beam prefabricated part 4 and the beam tenon 14, and two ends of the rabbet are sealed. Specifically, the rabbet end comprises a rabbet outer end and a rabbet inner end, and the rabbet outer end is positioned at the lower end of the outer side of the upper prefabricated outer wall; the inner end of the rabbet is the other end of the outer end of the opening inner rabbet, and the inner end of the rabbet is connected with a composite floor cast-in-situ layer; preferably, the outer end of the rabbet 12 is sequentially provided with the first sealant 3 and the first foam strip 2 from outside to inside, and the inner end of the rabbet is sequentially provided with the water stop strip 6, the second foam strip 7 and the second sealant 8 from outside to inside.
The width of the wall tenon 13 is more than 50mm, the height is 50-130 mm, and the length is the length of the upper prefabricated outer wall.
The width of the beam tenon 14 is more than 50mm, the height is 50-130 mm, and the length is the length of the upper prefabricated outer wall.
The waterproof rabbet 12 is in a step shape, and the section width is more than 20 mm.
The horizontal sections of the wall tenon 13 and the beam tenon 14 are rectangular; the wall tenons 13 and the beam tenons 14 are the same height.
The width ratio of the beam prefabricated part 4 to the beam cast-in-place part 11 is 1: 0.5-1: 3, and the height ratio of the composite floor prefabricated layer 10 to the composite floor cast-in-place layer 9 is 1: 1-1: 2.
The first foam strip 2 and the second foam strip 7 may be polyethylene foam strips, expandable polyethylene foam strips, ethylene-vinyl acetate copolymer foam strips, or the like.
The first sealant 3 and the second sealant 8 can be silicone sealant, polyurethane sealant, polysulfide sealant, acrylic sealant, modified silicone sealant, etc.
The water stop strip 6 can adopt an ethylene propylene diene monomer rubber water stop strip, a BF rubber water stop strip, a BW rubber water stop strip and the like.
Examples
The composite floor cast-in-place layer 9 with the thickness of 80mm and the composite floor precast layer 10 with the thickness of 60mm jointly form a structural floor with the thickness of 140mm, and one end of the floor is supported on a structural beam jointly formed by the beam precast part 4 with the width of 140mm and the beam cast-in-place part 11 with the width of 140 mm; the beam is supported on a lower prefabricated outer wall 5 with the width of 200mm, and the outer side of the beam is flush with the outer side of the wall; the upper prefabricated outer wall 1 with the width of 200mm is positioned on the structural beam, and the outer side of the wall is flush with the outer side of the beam.
The waterproof rabbet 12 is arranged below the upper prefabricated outer wall 1, above the beam prefabricated part 4 and outside the composite floor cast-in-place layer 9 and the beam cast-in-place part 11 and is close to the parts.
The waterproof rabbet 12 formed by combining the wall tenon 13 of the upper prefabricated outer wall 1 and the beam tenon 14 of the beam prefabricated part 4 is in a fold line shape with a low outer part and a high inner part, the height of the horizontal section of the waterproof rabbet is 25mm, and the width of the vertical section of the waterproof rabbet is 30 mm; the widths of the wall tenon 13 and the beam tenon 14 which form the waterproof rabbet 12 are 55mm, and the heights of the wall tenon and the beam tenon are 80 mm; the starting position of the waterproof rabbet 12 is flush with the outer side of the beam prefabrication part 4, the ending position is flush with the inner side of the beam prefabrication part 4, the horizontal projection length is 140mm in total, and the vertical projection height is 105mm in total.
In the prior art, material waterproofing, structural waterproofing or structural waterproofing are generally considered independently, and in cast-in-place construction, if a rabbet is arranged to realize structural waterproofing, the actual size and design of the rabbet often have larger deviation due to insufficient construction precision on site, so that the waterproofing performance of an outer wall is seriously influenced. According to the invention, the upper prefabricated outer wall and the lower prefabricated outer wall are arranged at intervals, and the outer side of the upper prefabricated outer wall is provided with a wall tenon extending downwards; the beam prefabricating part is placed at the upper end of the lower prefabricated outer wall, and a beam tenon extending upwards is arranged on the inner side of the beam prefabricating part; forming a tongue-and-groove with low outside and high inside between the wall tenon and the upper prefabricated outer wall and between the beam prefabricated part and the beam tenon; the upper tenon and the lower tenon which form the waterproof rabbet are all prefabricated, so that the problem of poor construction precision of cast-in-place construction in a construction site is solved, and the waterproof effect of the outer wall is ensured.
According to the invention, the stepped structure is arranged on the inner side of the upper prefabricated outer wall, so that the beam cast-in-place part and the laminated floor cast-in-place layer can be cast in place together, the structural integrity is enhanced, and the waterproof effect of the outer wall is improved. The upper tenon and the lower tenon of the waterproof rabbet are prefabricated together with the external wall panel, so that the problem of poor waterproof effect of the external wall caused by low construction precision in actual construction is effectively solved, and meanwhile, the construction is simplified, the cost is saved, and the quality is improved. When the invention is in construction, the formwork below the beam cast-in-place part and the composite floor prefabricated layer form a template required by the integral casting of the composite floor cast-in-place layer and the beam cast-in-place part, the construction is convenient, and the time and the labor are saved.
The invention comprehensively adopts three methods of material waterproofing, structural waterproofing and structural waterproofing, improves the structural waterproofing, organically combines the three methods and integrally improves the seepage-proofing performance. The waterproof material is a method for embedding and filling a leakage path by adopting a waterproof material to realize the waterproof performance, and the waterproof material is characterized in that a sealant is arranged at a joint; structural waterproofing refers to a method for waterproofing by utilizing the cementing property of a building structural material, and the method is characterized in that post-cast concrete is arranged at the joint of prefabricated parts; the structural waterproofing is realized by adopting a structural form for waterproofing, and the structure is characterized in that a rabbet is arranged, and the actual construction quality of the rabbet is guaranteed by prefabricating an upper tenon.
The scope of the present invention is not limited to the above embodiments, and various other equivalent modifications, substitutions and alterations can be made without departing from the basic technical concept of the present invention as described above.
Claims (10)
1. The waterproof structure at the horizontal joint of the assembled prefabricated outer wall is characterized in that an upper prefabricated outer wall and a lower prefabricated outer wall are arranged at intervals, and the outer side of the upper prefabricated outer wall is provided with a wall tenon extending downwards; the beam is composed of a beam prefabricating part and a beam cast-in-place part, the beam prefabricating part is placed at the upper end of the lower prefabricated outer wall, and a beam tenon extending upwards is arranged on the inner side of the beam prefabricating part; the composite floor slab comprises a composite floor slab cast-in-place layer and a composite floor slab prefabricated layer, the composite floor slab cast-in-place layer is positioned on the composite floor slab prefabricated layer, the end part of one end of the composite floor slab cast-in-place layer extends out of the composite floor slab prefabricated layer, and the part of the composite floor slab cast-in-place layer extending out of the composite floor slab prefabricated layer is positioned at the upper end of the beam cast-in-place part; and a tongue-and-groove with low outside and high inside is formed between the wall tenon and the upper prefabricated outer wall as well as the beam prefabricated part and the beam tenon, and two ends of the tongue-and-groove are sealed.
2. The waterproof structure at the horizontal joint of the prefabricated assembly type external wall according to claim 1, wherein the width of the tenon of the wall is more than 50mm, the height of the tenon of the wall is 50-130 mm, and the length of the tenon of the wall is the length of the prefabricated upper external wall.
3. The waterproof structure at the horizontal joint of the prefabricated exterior wall according to claim 1, wherein the width of the beam tenon is more than 50mm, the height of the beam tenon is 50-130 mm, and the length of the beam tenon is the length of the prefabricated exterior wall at the upper part.
4. The waterproof structure at the horizontal joint of the prefabricated exterior wall according to claim 1, wherein the groove is stepped, and the section width is more than 20 mm.
5. The waterproof structure at the horizontal joint of the prefabricated exterior wall according to claim 1, wherein the horizontal section of the wall tenon and the beam tenon is rectangular; the wall tenon and the beam tenon have the same height.
6. The waterproof structure at the horizontal joint of the prefabricated exterior wall according to claim 1, wherein the length of the end part of one end of the cast-in-place layer of the composite floor slab, which extends out of the cast-in-place layer of the composite floor slab, is the width of the cast-in-place part of the beam.
7. The waterproof structure at the horizontal joint of the prefabricated assembly type exterior wall according to claim 1, wherein the width ratio of the beam prefabricated part to the beam cast-in-place part is 1: 0.5-1: 3, and the height ratio of the prefabricated layer of the composite floor slab to the cast-in-place layer of the composite floor slab is 1: 1-1: 2.
8. The waterproof structure at the horizontal joint of the prefabricated assembled external wall according to claim 1, wherein the rabbet end comprises a rabbet outer end and a rabbet inner end, and the rabbet outer end is positioned at the lower end of the outer side of the prefabricated external wall at the upper part; the inner end of the rabbet is the other end of the outer end of the opening inner rabbet, and the inner end of the rabbet is connected with a composite floor cast-in-situ layer; the outer end of the rabbet is sequentially provided with a first sealant and a first foam strip from outside to inside, and the inner end of the rabbet is sequentially provided with a water stop strip, a second foam strip and a second sealant from outside to inside.
9. The waterproof structure of the horizontal joint of the prefabricated exterior wall according to claim 8, wherein the foam strips are polyethylene foam strips, expandable polyethylene foam strips or ethylene-vinyl acetate copolymer foam strips; the sealant is silicone sealant, polyurethane sealant, polysulfide sealant, acrylic sealant or modified silicone sealant.
10. The waterproof structure of the horizontal joint of the prefabricated exterior wall according to claim 8, wherein the water stop strip is an Ethylene Propylene Diene Monomer (EPDM) rubber water stop strip, a BF rubber water stop strip or a BW rubber water stop strip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210086423.4A CN114382185A (en) | 2022-01-25 | 2022-01-25 | Waterproof construction of horizontal seam crossing of prefabricated outer wall of assembled |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210086423.4A CN114382185A (en) | 2022-01-25 | 2022-01-25 | Waterproof construction of horizontal seam crossing of prefabricated outer wall of assembled |
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| CN114382185A true CN114382185A (en) | 2022-04-22 |
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|---|---|---|---|
| CN202210086423.4A Pending CN114382185A (en) | 2022-01-25 | 2022-01-25 | Waterproof construction of horizontal seam crossing of prefabricated outer wall of assembled |
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| CN110820928A (en) * | 2019-11-01 | 2020-02-21 | 六安远大住宅工业有限公司 | Connecting joint of wallboard and beam and construction method thereof |
| CN211850066U (en) * | 2019-11-26 | 2020-11-03 | 中国二十冶集团有限公司 | Waterproof structure for joint of prefabricated external wall panel of prefabricated building |
| CN111677134A (en) * | 2020-06-15 | 2020-09-18 | 广东省建工设计顾问有限公司 | Prefabricated external wall panel and connecting node thereof |
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