Open-frame glass curtain wall is a very common glass curtain wall, which
Open-frame glass curtain wall is a very common glass curtain wall, which is widely used in glass buildings. Open-frame glass curtain wall has a long service life. Compared with other curtain walls, the technology of open-frame glass curtain wall is very mature and the operation is relatively simple. The following small series will introduce the installation method of open-frame glass curtain wall and the matters needing attention in installing open-frame glass curtain wall.
Installation method of open-frame glass curtain wall engineering
(1) Clean the surface dust and pollutants before installing the glass. When installing heat reflective glass, the coated surface faces indoors and the uncoated surface faces outdoors.
(2) When the curtain wall glass is inlaid, the matching size of the insertion notch shall be checked according to the relevant provisions in JG3035 of Building Curtain Wall.
(3) The glass shall not be in direct contact with the parts, and a certain gap shall be kept between the glass and the bottom of the notch of the parts. According to the design requirements, a certain number of positioning pads must be installed at the lower part of each glass. The width of the locating pad shall be the same as that of the notch, and the length shall be not less than 100㎜, and the glass and both sides of the notch shall be sealed with adhesive tape or seal.
(4) After the glass is positioned, the sealing strip or sealant should be embedded around it in time and kept flat. Sealing strip and sealant should be selected according to the specified model.
(5) After the glass is installed, conduct self-inspection first, and report it to the quality inspector for sampling inspection after it is qualified. The number of samples should account for more than 5% of the total, and not less than 5 pieces. The unqualified number of inspection points does not exceed 10%, and it is judged as qualified.
Matters needing attention in installation of open-frame glass curtain wall project
(1) The accuracy and quality of mullion installation will affect the installation quality of the whole glass curtain wall, which is one of the keys of curtain wall construction and installation. Generally speaking, according to the construction and transportation conditions, the mullion can be a whole-story building with a length of 7.5M and a certain gap in the joints.
(2) Before installation, check whether the specification, size, quantity and quantity of the column are consistent with the construction drawings. Construction personnel must be trained in aerial work and conform to Technical Specification for Safety of Aerial Work in Building Construction (JGJ80).
(3) The mullion shall be connected with the connector first, then the connector shall be connected with the main embedded part, and the mullion shall be adjusted and fixed. Installation elevation deviation should not be greater than 3㎜, axis deviation should not be greater than 2㎜, left and right deviation should not be greater than 3㎜. At the same time, note that the error must not be accumulated, and the window opening is a positive tolerance.
(4)? The installation elevation deviation of adjacent mullions should not be greater than 3㎜, the maximum elevation deviation of mullions on the same floor should not be greater than 3㎜, and the distance deviation of adjacent mullions should not be greater than 2㎜.
(5) Anti-corrosion gaskets must be added between the contact surfaces of mullions and connectors (supports).
(6) After vertical initial positioning according to deviation requirements, self-inspection shall be conducted, and the unqualified ones shall be adjusted and corrected.
(7) Glass curtain wall mullion shall be fixed in time after installation and adjustment. Temporary bolts for glass and curtain wall installation shall be removed in time after the components are installed in place, adjusted and fixed.
(8) Welders are special types of work, and they must go through professional safety technology study and training, and can work independently only after passing the examination.
(9) Fire and explosion-proof safety measures must be taken before welding site operation. Fire bucket and fire attendant should be set below the weldment, and protective glasses and masks should be worn during operation. The grounding zero line of electric welding machine and the return line of electric welding work must comply with relevant safety regulations.
( 10)? After the mullions are firmly installed, the signs used to locate the expansion joints between the upper and lower mullions must be removed, and sealant should be applied to the expansion joints.
What are the installation steps of open-frame glass curtain wall and what are the precautions when installing open-frame glass curtain wall? These small series have been introduced in detail. The frame of open-frame glass curtain wall is generally made of aluminum, which has good forming effect and low manufacturing cost, and is a friendly existence for the economy. The use of open glass curtain wall makes our living environment better.