CN-121992920-A - Connection structure of adsorption type bamboo-wood fiber integrated wallboard and ALC wall and construction method

CN121992920ACN 121992920 ACN121992920 ACN 121992920ACN-121992920-A

Abstract

The invention discloses a connection structure of an adsorption type bamboo-wood fiber integrated wallboard and an ALC wall body and a construction method, and belongs to the technical field of building enclosure. The connecting structure comprises an ALC wall body, a salt spray resistant HDPE film laid on the outer side of the AL wall body, a galvanized light steel keel fixed on the ALC wall body through a self-tapping screw sleeved with an EPDM salt resistant rubber pad, a magnetic attraction point fixed on the outer side of the galvanized light steel keel, and a surface layer composite wallboard formed by gluing a metal adsorption layer and a bamboo-wood fiber wallboard, wherein the surface layer composite wallboard is detachably fixed through adsorption cooperation of the metal adsorption layer and the magnetic attraction point. During construction, HDPE films are laid firstly, galvanized light steel keels and magnetic attraction points are installed, and finally the surface layer composite wallboard is adsorbed and fixed. The problem that the coastal environment connecting structure is easy to corrode is solved through the design of multiple salt spray resistance protection, the magnetic attraction type connection is adopted, the tool-free quick disassembly and assembly is realized, and the weather resistance, the efficient assembly efficiency and the convenient maintenance performance are excellent.

Inventors

LI HAIJIANG
MA CHUANWEI
Yuan Xuqiang
YU JING
Wu Ningpu
Zhang Huanning

Assignees

中国二十二冶集团有限公司

Dates

Publication Date: 20260508
Application Date: 20260330

Claims (10)

1. The connecting structure of the adsorption type bamboo-wood fiber integrated wallboard and the ALC wall body is characterized by comprising the ALC wall body, wherein a salt spray resistant HDPE film is coated on the outer side surface of the ALC wall body, a galvanized light steel keel is fixed through a tapping screw, an EPDM salt resistant rubber pad is sleeved on the tapping screw and between the head of the tapping screw and the galvanized light steel keel, a magnetic attraction point is fixedly arranged on one side surface of the galvanized light steel keel, which is away from the ALC wall body, and a surface layer composite wallboard is adsorbed through the magnetic attraction point, and is formed by fixing a metal adsorption layer and the bamboo-wood fiber wallboard through gluing.
2. The connection structure of the adsorption type bamboo-wood fiber integrated wallboard and the ALC wall body, which is disclosed in claim 1, is characterized in that the thickness of the salt spray resistant HDPE film is 0.25-0.3mm, the salt spray resistant HDPE film is paved on the surface of the ALC wall body, the edges of the salt spray resistant HDPE film are adhered by the butyl adhesive tape, and the lap joint width between the films is not less than 50mm.
3. The connection structure of the adsorption type bamboo-wood fiber integrated wallboard and the ALC wall body, which is disclosed in claim 1, is characterized in that the galvanized light steel joists are U-shaped joists, the thickness of the galvanized layers is not less than 85 mu m, the section height of the joists is 50-75mm, the width of flanges is 15-20mm, the thickness of webs is 1.2-1.5mm, and the galvanized light steel joists are arranged at equal intervals along the height direction of the ALC wall body, and the interval is 400-600mm.
4. The connection structure of the adsorption type bamboo-wood fiber integrated wallboard and the ALC wall body according to claim 1, wherein the self-tapping screws are made of galvanized materials, the nominal diameter is 4.2-5.5mm, the depth of the self-tapping screws embedded into the ALC wall body is not less than 50mm, and a plurality of self-tapping screws are arranged along the length direction of a galvanized light steel joist, and the distance is 150-200mm.
5. The connection structure of the adsorption type bamboo-wood fiber integrated wallboard and the ALC wall body, which is disclosed in claim 1, is characterized in that the EPDM salt-resistant rubber pad is of a round structure, the diameter of the EPDM salt-resistant rubber pad is 8-10mm larger than the diameter of the head of the tapping screw, the thickness of the EPDM salt-resistant rubber pad is 3mm, and the Shore hardness is 50-60 degrees.
6. The connection structure of the adsorption type bamboo-wood fiber integrated wallboard and the ALC wall body, which is disclosed in claim 1, is characterized in that the magnetic attraction points are N35-N52-level neodymium-iron-boron permanent magnets, a 304 stainless steel insert sleeve is arranged outside the magnetic attraction points, the thickness of the 304 stainless steel insert sleeve is 1.2mm, an EPDM salt-resistant rubber pad with the thickness of 1mm is adhered to the bottom of the 304 stainless steel insert sleeve, and a plurality of magnetic attraction points are arranged at equal intervals along the length direction of the galvanized light steel joist, and the interval is 200-300mm.
7. The connection structure of the adsorption type bamboo-wood fiber integrated wallboard and the ALC wall body according to claim 1, wherein the metal adsorption layer is a galvanized steel plate with the thickness of 1.0-1.2mm, the thickness of the galvanized layer is not less than 12 mu m, and the surface is subjected to passivation treatment.
8. The connection structure of the adsorption type bamboo-wood fiber integrated wallboard and the ALC wall body according to claim 1, wherein the thickness of the bamboo-wood fiber wallboard is 8-12mm, the density is 0.8-1.0g/cm < 3 >, and the water absorption expansion rate is less than or equal to 2%.
9. The connection structure of the adsorption type bamboo-wood fiber integrated wallboard and the ALC wall body, which is disclosed in claim 1, is characterized in that the adhesive adopted in the gluing process is special aldehyde-free polyurethane adhesive for coast, the solid content is not less than 95%, and the tensile shear strength is not less than 3.5MPa.
10. A construction method based on the connection structure of the adsorption type bamboo-wood fiber integrated wallboard and the ALC wall body as set forth in any one of claims 1 to 9, characterized by comprising the steps of: S1, base layer treatment and protective layer laying, namely cleaning the surface of an ALC wall body, and laying a salt mist resistant HDPE film on the outer side surface of the ALC wall body; S2, attaching the galvanized light steel joist to the surface of the salt spray resistant HDPE film, sleeving an EPDM salt resistant rubber pad on the head of a self-tapping screw, fixing the galvanized light steel joist on an ALC wall body through the self-tapping screw, and fixedly mounting the magnetic attraction point on the surface of one side of the galvanized light steel joist, which is away from the ALC wall body, through bolts; S3, the surface layer composite wallboard is adsorbed and fixed, namely the prefabricated surface layer composite wallboard is moved to the installation position in a mode that the metal adsorption layer faces the magnetic adsorption point, and the surface layer composite wallboard is fixed with the ALC wall body through magnetic adsorption of the magnetic adsorption point and the metal adsorption layer.

Description

Connection structure of adsorption type bamboo-wood fiber integrated wallboard and ALC wall and construction method Technical Field The invention relates to the technical field of building enclosure, in particular to a connection structure of an adsorption type bamboo-wood fiber integrated wallboard and an ALC wall body and a construction method. Background Autoclaved aerated concrete (ALC) wallboard has become a widely used enclosure member in assembled buildings due to the advantages of light weight, high strength, heat preservation, heat insulation and the like. Bamboo fiber wallboard is often used as a building inner and outer surface layer material due to the characteristics of green and environment protection and good decorative performance. However, in severe environments such as coastal areas with high temperature, high humidity and high salt mist, the existing wall connection technology has obvious defects. Firstly, the traditional metal connecting piece lacks a specific salt spray corrosion resistant design, and is easy to rust in the use process, so that the connecting strength is reduced and even fails. Meanwhile, the sealing performance of the connecting joint between the ALC wall body and the surface wallboard is poor, salt fog is easy to invade the connecting interface, and the structure is accelerated to be damaged. Secondly, among the prior art, the fixed sticky or screw penetrating type of adoption of surface course wallboard and basic unit is fixed more, and not only on-the-spot wet work volume is big, the efficiency of construction is low, is unfavorable for the later maintenance and the change of wallboard moreover. In addition, the conventional adhesive often contains formaldehyde and other harmful substances, and does not meet the low-carbon environment-friendly requirement of green buildings. Therefore, development of a novel wall connecting structure which can adapt to the severe coastal environment and realize efficient assembly and convenient maintenance is needed. Disclosure of Invention Aiming at the defects of the prior art, the invention aims to provide a connecting structure of an adsorption type bamboo-wood fiber integrated wallboard and an ALC wall body and a construction method thereof, wherein the connecting structure is suitable for coastal high-salt-fog and high-humidity and high-heat environments. The technical scheme adopted for solving the technical problems is as follows: The utility model provides an adsorption type bamboo wood fiber integrated wallboard and connection structure of ALC wall body, including the ALC wall body, the salt spray resistant HDPE membrane has been laid to the outside surface of ALC wall body to be fixed with galvanized light steel joist through self tapping screw, the cover is equipped with EPDM salt resistant rubber pad on the self tapping screw and between self tapping screw head and the galvanized light steel joist, and galvanized light steel joist deviates from one side fixed surface of ALC wall body and is provided with the magnetism and inhale the point, and has the surface course composite wallboard through the magnetism absorption point absorption, the surface course composite wallboard is formed through glued fixed by metal adsorption layer and bamboo wood fiber wallboard. Further, the thickness of the salt spray resistant HDPE film is 0.25-0.3mm, the salt spray resistant HDPE film is paved on the surface of an ALC wall body, the edges of the salt spray resistant HDPE film are adhered by butyl adhesive tapes, and the lap joint width between the films is not less than 50mm. Further, the galvanized light steel keels are U-shaped keels, the thickness of the galvanized layer is not less than 85 mu m, the section height of the keels is 50-75mm, the width of the flanges is 15-20mm, the thickness of the web is 1.2-1.5mm, and the galvanized light steel keels are arranged at equal intervals along the height direction of the ALC wall, and the interval is 400-600mm. Further, the self-tapping screws are made of galvanized materials, the nominal diameter is 4.2-5.5mm, the depth of the self-tapping screws embedded into the ALC wall body is not less than 50mm, and the self-tapping screws are arranged along the length direction of the galvanized light steel joists, and the distance is 150-200mm. Further, the EPDM salt-resistant rubber pad is of a round structure, the diameter of the EPDM salt-resistant rubber pad is 8-10mm larger than that of the head of the tapping screw, the thickness of the EPDM salt-resistant rubber pad is 3mm, and the Shore hardness is 50-60 degrees. Further, the magnetic attraction points are N35-N52-level neodymium-iron-boron permanent magnets, 304 stainless steel inserts are arranged outside the magnetic attraction points, the thickness of the 304 stainless steel inserts is 1.2mm, EPDM salt-resistant rubber pads with the thickness of 1mm are stuck to the bottoms of the 304 stainless steel inserts, and a plurality of magnet