First, the construction preparation

1. Determine the construction process: installing embedded parts, measuring and setting out, installing and fixing iron-coded steel profiles, installing aluminum plates, installing sealant, cleaning up the project and acceptance.

2, construction preparation

2. 1. Before the construction of aluminum curtain wall, the specifications of required materials and the number of various accessories should be accurately provided according to the design requirements for processing.

2.2 Before construction, check the quality of the main structure according to the framework design of aluminum curtain wall. Because the quality of the main structure has a great influence on the arrangement position of the curtain wall skeleton. Especially the deviation of verticality and flatness of the wall will affect the horizontal position of the whole curtain wall.

2.3. Check the construction drawings and measurement dimensions in detail to ensure the perfection of design and processing.

3. Fuck oak parts

3. 1, set up a separate warehouse on site to prevent materials from being damaged. After the components are put into storage, they should be stacked on the skids according to the varieties and specifications. Before installation, all parts should be inspected and corrected, and the parts should be straight and tidy without deformation and scratches. Unqualified parts shall not be installed.

3.2, aluminum curtain wall construction depends on scaffolding, according to the height and width of curtain wall skeleton design drawings, erection of double-row scaffolding.

3.3. Before installation, use tower crane to transport aluminum plate and accessories to the construction surface.

4, measuring unreeling

4。 1. Punch out all embedded parts and recheck their positions and dimensions.

4.2. Determine the width and access size of the social flat wall according to the bottom datum line.

4.3, theodolite pull up a few vertical lines, to determine the curtain wall corner and facade size.

4.4, according to the axis and the center line to determine the center line of the facade.

4.5, measuring unreeling distribution error should be controlled, don't make the error accumulation.

4.6, measuring unreeling under the condition of the wind is not more than 4. Pay-off should be checked in time to ensure the verticality of the curtain wall and the correctness of its position in the column.

B, curtain wall profile processing and installation

1, curtain wall profile skeleton processing

1. 1, and the allowable deviation of blanking length and size of various profiles is1mm; The allowable deviation of the beam is 0.5 mm; ; The allowable deviation of mullion is 65438±0mm；; The allowable deviation of end slope is-15 mm.

1.2, the machined surface should be deburred and flash, the cutting end should not be deformed, and the burr should not be greater than 0.2mm. ..

1.3, bolt holes shall be completed by drilling and reaming.

1.4, screw hole size requirements: the allowable deviation of hole position is 0.5mm；; The allowable deviation of hole spacing is 0.5 mm; ; The cumulative deviation should not be greater than 1 mm.

1.5, steel profiles are processed in the company's workshop, and after the profiles are formed, cut and punched, they are subjected to anti-corrosion treatment.

2, curtain wall profile skeleton installation

2. 1, aluminum curtain wall skeleton installation, pay-off according to the specific location. The installation work starts from the bottom and goes up step by step.

2.2, before installation, the first thing to clean up the embedded iron. Before measuring unreeling, check the position of embedded iron pieces one by one, and remove the cement ash on the iron pieces. At all anchorage points, concrete shall be leveled to increase embedded parts.

2.3, after the completion of cleaning work, began to install the connector. All skeleton facades of aluminum curtain walls shall be vertical and flat. Therefore, after all connectors are welded to the iron plate of the main structure or anchored with expansion bolts during construction, their overhanging end faces must also be on the same vertical plane elevation to be guaranteed. Specific methods: Take a flat facade as a unit, determine the appropriate distance between the main structure and the vertical frame from the vicinity of the anchorage points of the vertical frame on both sides of the top floor of the unit, set cantilever iron piles up and down, hang lines with wire hammers to find out the vertical plane and flatness of the same facade, tie them tightly with iron wires after adjustment, determine the two sides of the facade unit, set cantilever iron piles on each side, and find out the vertical flat points of each floor on the iron piles according to the vertical lines. When setting iron piles on each floor, they should be on the same horizontal plane. Then, at the vertical points carved by the cantilever iron piles on both sides of each floor, the iron wires are tightened, and the connecting iron pieces of each mullion are welded or anchored according to the lines, so that the overhanging end faces are vertical and flat. When welding connectors and buried plates, operating procedures must be observed. Covered electrode model, weld height and length used for electric welding shall meet the design requirements, and inspection records shall be made. After the components welded, screwed or bolted on site are positioned, they shall be rusted in time.

2.4. After the connector is fixed, X starts to install the mullion. The accuracy and quality of mullion installation affect the installation quality of the whole aluminum curtain wall. Therefore, the vertical frame installation is one of the key processes in the installation and construction of aluminum curtain wall. The allowable deviation of the distance between the plane axis of aluminum curtain wall and the plane axis outside the building should be controlled within 2mm. The mullion should be connected with the connector by bolts, which should be made of stainless steel and have sufficient length. After the nut is tightened, the bolt should protrude more than 3 mm from the nut. Contact between connectors and mullions should be isolated by adding nylon washers to prevent potential difference corrosion. The area of nylon gasket should not be less than the contact area between connector and mullion. After installing the first layer of mullions, install the upper layer of mullions. During the installation of mullions, the center line of mullions should be checked at any time. If there is any deviation, it should be corrected immediately. The accuracy of mullion size will directly affect the quality of curtain wall. Vertical frame installation elevation deviation should not be greater than 3 mm; Axis deviation before and after should not be greater than 2mm, left and right deviation should not be greater than 3 mm; The elevation deviation of two adjacent mullions shall not be greater than 3 mm; The maximum elevation of mullions on the same floor should not be greater than 5 mm; The distance deviation between two adjacent mullions should not be greater than 2mm. After the mullion is adjusted and fixed, the beam can be installed.

2.5, according to the elastic line to determine the location of the beam installation. When installing beams, the most important thing is to ensure that the outer surfaces of beams and mullions are at the same elevation. The vertical frames of the beams are connected by angle codes, which are made of galvanized iron sheets. One limb of the angle code is fixed on the beam, and the other limb is fixed on the mullion. The strength of fixed parts and corner codes shall meet the design requirements of www.fdcew.com. There should also be expansion joints between beams and mullions. After the beam is fixed, silicone sealants will be used to seal the expansion joint. When installing beams, 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 aluminum curtain wall is greater than or equal to 3mm, it should not be greater than 5 mm; When the width of aluminum curtain wall is greater than 35m, it should not be greater than 7 mm, and the installation of beams should be carried out from bottom to top. After the height of the first floor is installed, it should be inspected, adjusted and corrected to meet the quality standards.

C. Installation of aluminum curtain wall

1. After the aluminum plate and the auxiliary frame are assembled, start to install on the main frame.

2. The width of the joint between plates depends on the design. Before installing the plates, pull out two wires on the mullion to determine the connection position between the plates, and install the plates according to the positions of the wires. When pulling wires, use wires with small elasticity to ensure the joints are neat.

3. A rubber pad should be added at the contact point between the auxiliary frame and the main frame, and rigid connection is not allowed.

4. After positioning the flat plate, insert the two feet of the flat plate into the groove of the flat plate subframe and tighten the bolts on the flat plate. The number and spacing of tabletting should be determined according to the design.

5. The gap between aluminum plates is generally 10-20mm, made of elastic materials such as silicone sealants or rubber strip. Put the spacer rod into the vertical joint.

6. Glue injection and sealing. After the aluminum plate is fixed, the joint between the plate and other parts that need to be sealed shall be sealed with weather-resistant silicone sealants. When injecting glue, it is necessary to clean the surface of the substrate in this part with detergent, and then inject sealant.

7. The construction thickness of weather-resistant silicone sealants should be controlled at 3.5-4.5 mm, and the glue injection is too thin, which is not conducive to ensuring the sealing quality and preventing rainwater leakage. However, the glue should not be injected too thick. When the glue is stressed, it is easy to be torn off, resulting in seal damage and leakage failure. The construction width of weather-resistant silicone sealants should not be less than twice the thickness or determined according to the actual joint width.

8. Weather-resistant silicone sealants should be bonded on both sides of the joint, not on three sides. Otherwise, the glue is easy to tear when it is pulled, and it loses its sealing and leakage-proof functions. Therefore, polyethylene foam strips are used to fill deep plate joints, so as to ensure the design and construction position of weather-resistant silicone sealants and prevent the formation of three-sided bonding. For shallow slab joints, before the construction of weather-resistant silicone adhesive, an unbonded adhesive tape is attached to the bottom of the joint to separate the bottom of the joint from the adhesive.

9. Before glue injection, clean the parts that need glue injection with cleaners such as acetone and toluene. When using detergent, two rags should be prepared. The first rag should be soaked in cleaning agent to make dirt bubble, and the second rag should be used to wipe off dirt and dissolved substances.

10, glue injection workers must be proficient in glue injection skills. When injecting glue, inject glue from one side to the other, not both sides at the same time. When injecting glue vertically, the glue should be injected from bottom to top. After glue injection and before the glue is cured, the joint glue should be laminated evenly, and there should be no bubbles and holes, which will affect the adhesion between the glue and the substrate. Glue injection should be continuous, and the glue joint should be even and full, without interruption.

1 1, when injecting glue, the construction can only be carried out if the climatic conditions such as humidity and temperature of the surrounding environment meet the construction conditions of weather-resistant glue.

12. After the sealant is completely cured, remove the protective film on the surface of the aluminum plate, and a beautiful aluminum plate will be displayed.

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