Detailed explanation of construction technology and acceptance standard of stone curtain wall

Stone has high frost resistance and compressive strength, so it is widely used in China. Stone curtain wall is bright and crystal clear, giving people a noble and elegant feeling, so it is favored by people. Today, Bian Xiao studied the construction technology and acceptance criteria of stone curtain wall with everyone:

Construction technology of stone curtain wall;

One. Installation process

Measuring unreeling → fitting installation → steel frame installation → pendant installation → stone installation → cleaning and gluing → stone protection.

Second, the construction method

1, measuring unreeling

(1) The measuring unreeling worker is based on the datum line and bench mark provided by the general contractor. Then use the total station to release the external control line at the bottom layer, and use the laser verticality instrument to guide the control point to the top of the standard layer for positioning. According to the external control line and the horizontal elevation point, determine the curtain wall installation control line. In order to ensure that it is not affected by other factors, the vertical steel wire has a fixed fulcrum every 2 floors and the horizontal steel wire has a fixed fulcrum every 4 meters. (Fill in the measuring unreeling record form, submit it to the supervisor for acceptance, and enter the next working procedure after passing the acceptance. )

(2) Measure all relative axis elevation dimensions of each hole.

(3) Structural elastic line A. Install the column according to the pay-off position. Generally speaking, the installation of columns starts from the bottom and then goes up. B. The construction personnel of the pay-off group shall first pop up the horizontal chalk line between layers on the embedded parts as the positioning datum line according to the elevation size of the construction drawing.

2. Installation of the adapter

Install the adapter according to the design requirements and embedded parts control line. The adapter is fixed on the embedded parts by stainless steel bolts. When installing, the elevation, front and back, left and right deviation of the adapter must be guaranteed. If the deviation exceeds the allowable range, it should be adjusted.

3, steel skeleton installation

A. First, check whether the machining hole position of the steel pipe column is correct according to the construction drawing, then connect the steel pipe column with the connector with bolts and hoist it to the installation department for installation. First, connect the bolt with the adapter, tighten it initially, and then adjust it.

B after the steel pipe is in place, it shall be adjusted according to the steel wire arranged by the survey group, and the installation inspection shall be carried out according to the construction drawing. After all the dimensions meet the requirements, the steel pipe shall be inspected in a straight line to ensure the axis deviation of the steel pipe column.

C. After the installation of the steel pipe column is completed, begin to install the channel steel beam, and install it on the steel pipe column with angle codes and bolts.

4, steel pendant installation

According to the drawing design, the hanger profile is cut and punched. Then the steel pendant is fixed on the angle steel with bolts, and the two are connected into a whole with rubber washers. Adjust the elevation and left and right according to the control line.

5, the installation of granite

1) In order to reduce the contact between the stone surface and water and atmosphere, reduce the dirt attached to the stone, protect the beauty of the stone and prolong its service life, before the stone enters the site, it is necessary to conduct waterproof and antifouling treatment on the stone and brush the stone surface protective agent to avoid the pollution of the stone during the construction.

2) After passing the inspection, hang granite slab on the basis of vertical steel wire and horizontal fishing line. The place where the corner is connected with the glass curtain wall should be installed by highly skilled personnel and spread out in a large area after installation.

4) Try to hang stone, adjust stone and install granite. In the installation process, if the four corners of a board are not on the same plane, it will often lead to a stone being installed on a different plane. At this time, the tolerance method should be adopted for adjustment. If three corners are on the same plane as the adjacent plate and one corner is recessed 1 mm, the whole plate will be adjusted outward by 0.5 mm. ..

6, stone glue protection

a.？ After granite installation, first clean the plate joints, especially polish the dry glue around the plate joints, and then embed the foam strips.

B. After the foam strips are embedded, stick anti-pollution textured paper to prevent the sealant from infiltrating into the stone and causing pollution. Sticking masking paper should ensure that the joint width is consistent. After gluing, the sealant is half dry and then the masking paper is torn off.

C. paste the masking paper after pasting. The width of glue joint is even, horizontal and vertical, and the joint surface is smooth and flat.

D use two corner aluminum to lean against the gluing and scraping parts, but pay attention to the joint width.

E. Rubber scraper is used to scrape rubber, and the scraper can cut at will according to its size and shape.

Code for acceptance of stone curtain wall:

It is suitable for the quality acceptance of stone curtain wall projects with building height not exceeding 100 meters and seismic fortification intensity not exceeding 8 degrees.

Master control project:

1.4.2? The varieties, specifications and performance grades of materials used in stone curtain wall engineering should meet the design requirements and the current national product standards and engineering technical specifications. The bending strength of stone should not be less than 8.0MPa, and the water absorption rate should be less than 0.8%. The thickness of aluminum alloy pendant of stone curtain wall should not be less than 4.0 mm, and the thickness of stainless steel pendant should not be less than 3.0 mm. Inspection method: observation; Ruler inspection; Check the product certificate, performance test report, material entry acceptance record and reinspection report.

1.4.3? The shape, mullion, color, luster, pattern and pattern of stone curtain wall should meet the design requirements. Inspection method: observation.

1.4.4? The number, depth, location and size of stone holes and grooves should meet the design requirements. Inspection method: check the entry acceptance record or construction record.

1.4.5? The position and quantity of embedded parts and rear embedded parts on the main structure of stone curtain wall and the drawing force of rear embedded parts must meet the design requirements. Inspection method: check the drawing force test report and the acceptance record of concealed works.

1.4.6? The connection between metal frame column of stone curtain wall and embedded parts of main structure, column and beam, connector and metal frame, connector and stone panel must meet the design requirements, and the installation must be firm. Inspection method: manual inspection; Check the acceptance records of concealed works.

1.4.7? Metal frame connectors and anti-corrosion treatment should meet the design requirements. Inspection method: check the acceptance records of concealed works.

1.4.8? The lightning protection device of stone curtain wall must be reliably connected with the lightning protection device of the main structure. Inspection method: observation; Check the acceptance records and construction records of concealed works.

1.4.9? The setting of fireproof, thermal insulation and moisture-proof materials for stone curtain wall should meet the design requirements, and the filling should be dense, uniform and consistent in thickness. Inspection method: check the acceptance records of concealed works.

1.4. 10? The deformation joints of various structures and the connecting nodes at corners shall meet the design requirements and technical standards. Inspection method: check the acceptance records and construction records of concealed works.

1.4. 1 1? The treatment of stone surface and slab joint should meet the design requirements. Inspection method: observation.

1.4. 12? Glue injection shall be full, dense, continuous, uniform and free of bubbles, and the width and thickness of slab joints shall meet the design requirements and technical standards. Inspection method: observation; Ruler inspection; Check the construction records.

1.4. 13? Stone curtain wall should have no leakage. Inspection method: Water spraying inspection shall be carried out at the leakage-prone parts.

General items:

1.4. 14? The surface of stone curtain wall should be smooth, clean, pollution-free, free from defects and cracks. Colors and patterns should be consistent, without obvious chromatic aberration and obvious scratches. Inspection method: observation.

1.4. 15? The layering of stone curtain wall should be straight, neat, with tight interface and firm installation. Inspection method: observation; Manual inspection.

1.4. 16? Stone joints should be horizontal, vertical and even in width; Yin and Yang angle slate should be pressed correctly, and the seam at the edge of the slab should be straight; The wall thickness of convex and concave lines should be consistent, and the upper and lower openings should be straight; The edges of holes and grooves on stone panels should be cut and matched, and the edges should be neat. Inspection method: observation; Check the ruler.

1.4. 17? The sealant joint of stone curtain wall should be horizontal, vertical, uniform in depth, uniform in width and straight. Inspection method: observation.

1.4. 18? The slope direction of drip line and running water on the stone curtain wall should be correct and straight. Inspection method: observation; Check with a level.

1.4. 19? The surface quality and inspection method of stone materials per square meter shall comply with the provisions of Table 1.4. 19.

Surface quality and inspection method of stone per square meter;

Project number? Project? Quality requirements? test method

1? Cracks, obvious scratches and length "; 100mm slight scratch? Not allowed? observe

2? Slight scratches with a length ≤ 100 mm? ≤8? Check with a steel ruler

3? Total area of wear? ≤500m㎡？ Check with a steel ruler

1.4.20? The allowable deviation and inspection method of stone curtain wall installation shall comply with Table 1.4.20.

Allowable deviation and inspection method of stone curtain wall installation;

Project number? Project? Allowable deviation (mm)? test method

Smooth? pitted skin

1? Verticality of curtain wall? Curtain wall height ≤30m? 10? Check 30m

2? Curtain wall levelness? 3? Check with a level

3? Verticality of plate facade? 3? Check with a level

4? What is the levelness of the top edge of the plate? 2? Check with 1m level and steel ruler.

5? Adjacent plates are misaligned? 1? Check with a steel ruler.

6? Is the yang angle square? 2? 3? Check with a vertical ruler.

7? Seam flatness? 2? 4? Check with a right-angle measuring ruler

8? What's the difference in seam height? 3? 4? Pull the wire of 5m, if it is less than 5m, pull the wire and check it with steel rule.

9? Seam width? 1? —? Check with steel ruler and feeler gauge.

10? Verticality of plate facade? 1? 2? Use a steel rule

Stone curtain wall is widely used, elegant and atmospheric, and very popular. The construction technology and acceptance criteria of stone curtain wall have been summarized for everyone. I hope it helps you. For more decoration technical knowledge, please continue to pay attention to the decoration of Tuba Rabbit.