(1) construction preparation

1. Material preparation: prepare detailed material orders and supply plans according to drawings and engineering conditions.

2. Construction machines and tools: Test the machines and tools used to ensure their good performance.

3. Personnel preparation: technical training and disclosure for skilled workers.

4. Technical preparation: be familiar with the drawings and prepare the related atlas, quality acceptance standards and forms for indoor materials.

(2) measuring unreeling

(3) Repair of excessive deviation of embedded parts

1, installation of embedded parts

2. Quality requirements

Embedded parts shall be located accurately and buried firmly. The elevation deviation is not more than 9mm, and the left-right displacement is not more than 20mm.

(4) Fabrication and installation of upright posts

1, column manufacturing

In order to save aluminum and reduce on-site processing, when ordering column materials, attach accurate column processing drawings and entrust aluminum manufacturers to process according to the drawings. The column processing drawing is drawn by the field technicians after measuring and setting out the column.

2, column installation

Before column installation, put the core sleeve (used to connect long columns and columns, leaving a seam of more than 20mm between upper and lower columns). ) into the column, and then drill holes on the column, use stainless steel bolts to install the connection angle code on the column, and use anti-corrosion gaskets to separate it.

Column installation sequence from bottom to top.

First column installation: two operators lift the column to the installation surface, so that the existing center line of the column coincides with the column station line (piano line) set during measurement, and the top of the column is horizontal with the elevation control line set during measurement. Another welder temporarily spot welds the connection angle code on the embedded steel plate, and then adjusts the position of the column. After the first column is accurate, put the upper column into the lower column core sleeve, and spot weld it after it is in place accurately. So as to complete that installation of a group of upright post.

After the installation of a curtain wall column is completed, check whether the position is accurate and whether the installation is firm, and then weld according to the requirements of weld. Column installation elevation deviation should not be greater than 3mm, front and rear axis deviation should not be greater than 2mm, left and right deviation should be greater than 3mm, and the installation elevation deviation of two adjacent columns should not be greater than 3mm, and the maximum elevation deviation of columns on the same floor should not be greater than 5 mm; The distance deviation between two adjacent columns should not be greater than 2mm.

(5) Fabrication and installation of beams

1, the beam is processed by the manufacturer according to the processing drawing and sent to the site for installation.

2, beam position measurement

3, beam installation

Install the connectors (aluminum corner codes) and elastic rubber pads at both ends of the beam at the predetermined position of the column, which requires firm installation and tight joints. The installation of beams on the same floor should be carried out from bottom to top. After the floor height is installed, it should be checked, adjusted, corrected and fixed to meet the quality requirements. The horizontal elevation deviation of two adjacent beams should not be greater than 65438 0 mm. Elevation deviation of the same floor: when the width of a picture is less than or equal to 35m, it should not be greater than 5 mm; When the picture width is greater than 35m, it should not be greater than 7mm.

(6) Manufacture of structural glass assembly components

Structural glass assembly components are manufactured in professional workshops, and the processing technology is as follows:

1, aluminum frame assembly

After the aluminum profile is cut, it should be assembled on a special workbench. When mass-producing aluminum frames, the dies should be set on the workbench and assembled according to the fixed dies to ensure the uniformity of aluminum frame assembly. The assembled aluminum frame should check the following items: the size and length difference between the edges of the aluminum frame; The diagonal length difference of aluminum frame; Assembly clearance between aluminum materials; Smoothness between adjacent aluminum materials.

2. Glass production

The glass is processed by the manufacturer as required and sent to the aluminum frame assembly workshop.

Step 3 purify

Purification is the most critical process in structural glass assembly production. Only by carefully cleaning the surface of the substrate according to the process requirements can structural glass components with specified reliability be manufactured. Xylene for oily stains; For non-oily stains, use a mixture of isopropanol and water.

Step 4 configure

Positioning is to fix the glass in the designated position of the aluminum frame. Generally, positioning fixture is used to ensure that the datum lines of the two are coincident. On the positioning platform, baffles with a height of about 100mm are set along a group of adjacent edges of the platform as the positioning benchmark of the glass. Install the aluminum frame positioning fixture on the surface of the platform, and fix the aluminum frame on the platform according to the design position of glass and aluminum frame. Stick double-sided adhesive on the aluminum frame according to the design position, so that the glass will fall along the baffle, and the two datum lines will overlap. The glass should be positioned successfully at one time, and it should not be moved under the condition of incorrect positioning, because once the glass touches the double-sided adhesive, the adhesive will stick to the glass, and coating structural adhesive on this layer of adhesive can not guarantee its firm adhesion with the glass. After the glass is positioned, an empty belly with glass and aluminum frame as the side wall and pad as the bottom is formed, and its size should be the same as the width and thickness of the glue line.

Step 5 inject glue

Protect the aluminum profile or glass surface about 5cm around the glue injection place with non-stick tape paper to prevent these parts from being polluted by glue; Check the variety, brand and production date of structural adhesive; Inject glue with a glue machine. When injecting glue, keep a proper speed, so that the air in the cavity can be exhausted to prevent the occurrence of cavities, and the air when compressed air squeezes the glue can also be exhausted to prevent bubbles from remaining in the glue joint and ensure the fullness of the glue joint; After the glue injection of components is completed, the glue joint shall be compacted and leveled with a scraper immediately. Glue injection should be carried out in a dust-free environment.

6. Maintenance

After glue injection, the plate should be left standing in a static field for curing, and the one-component structural glue can be transported only after standing for 7 days.

The temperature required for environmental maintenance is 23 5℃ and the relative humidity is 70% 5%. When curing, the glass plate should be flat; When stacking, the stacking height shall not exceed 7 floors, and each block shall be padded with 4 equilateral cubic foam plastic blocks on the next floor, and the cube size deviation shall be ≤ 0.5mm.. ..