Curtain wall engineering construction process and standards?

Curtain wall engineering construction process and standards for what is included, the following in the consulting bidding teacher for you to answer for reference.

This article comprehensively describes the curtain wall engineering construction process and standards, the glass curtain wall, stone curtain wall, metal curtain wall material requirements, the construction of the use of the main equipment, the conditions of operation, construction process, acceptance and safety measures.

1, the scope of application:

This section of the glass curtain wall project applies to the building height is not greater than 150m, seismic cracking is not greater than 8 degrees of hidden frame glass curtain wall, semi-hidden frame glass curtain wall, open frame glass curtain wall, full glass curtain wall support glass curtain wall project; stone curtain wall project applies to the building height is not greater than 150m, seismic cracking is not greater than 8 degrees of stone curtain wall Installation works; metal plate curtain wall project for building height not greater than 150m metal curtain wall project

2, material requirements:

According to the different types of architectural curtain wall, a variety of materials should be in line with the design requirements, at the same time, to strictly implement the current state issued by the Cabinet specification of the material selection and order.

2.1 glass curtain wall material requirements

2.1.1 metal: aluminum alloy extruded profiles and plates, should meet the specification requirements.

Carbon steel: profiles and plates in accordance with JISG3131, fasteners in accordance with JISG3101 specifications.

Stainless steel: fasteners in line with JISG4304, profiles, plates should be in line with JISG4305 specification 2.1.2 sealant: according to the design to determine a variety of sealant, and identification. Hidden frame, semi-hidden frame curtain wall used in the structure of the bonding material must be neutral silicone structural sealant, and its performance must comply with the "architectural silicone structural sealant" GB16766; silicone structural sealant must be used within the validity period.

2.1.3 The metal materials used in the curtain wall, except for stainless steel, should be anti-corrosion treatment (such as anodic oxidation treatment of aluminum alloy surface)

2.1.4 The materials on the curtain wall should be in line with the relevant national or industry quality regulations, with factory certificates of compliance with the requirements of non-combustible or flame-retardant materials.

2.1.5 sealing materials used on the curtain wall (such as seals, sealants, etc.) should all be water-resistant, solvent-resistant, aging-resistant and low-temperature elasticity, low permeability characteristics.

2.1.5.1 Structural silicone sealant shall have compatibility test report with the materials in contact with each other, and have quality and use warranty. Hidden frame, semi-hidden frame curtain wall used in the structural bonding material must be neutral silicone structural sealant, and its performance must be in line with the "architectural silicone structural sealant" GB16776; silicone structural sealant must be used within the validity period.

2.1.6 Between the main structure and the components of the glass curtain wall, heat-resistant hard organic material gaskets should be used. In the connectors between columns and beams, it is appropriate to use rubber gaskets.

2.1.7 glass curtain wall glass should be in accordance with the following provisions:

2.1.7.1 curtain wall should use safety glass, glass varieties, specifications, color optical properties and installation direction should be consistent with the design requirements.

2.1.7.2 The thickness of the curtain wall glass should not be less than 6.0mm, the thickness of all-glass curtain wall glass should not be less than 12mm.

2.1.7.3 Insulating glass in the curtain wall should be sealed with a double channel.

2.1.7.4 curtain wall of laminated glass should be used polyvinyl butyral (PVB) film dry processing synthetic laminated glass. Point bearing glass curtain wall laminated glass laminated film (PVB) thickness should not be less than 0.76mm.

2.1.7.5 Tempered glass surface shall not be damaged; 8.0mm or less tempered glass should be detonation treatment.

2.1.7.6 All curtain wall glass should be edge treatment.

2.1.8 The material and type of rubber strips around the glass shall meet the design requirements, the inlay shall be flat, and the length of rubber strips shall be longer than the inner groove of the frame by 1.5%-2.0%. Rubber strip in the corner should be beveled break, and should be firmly bonded with adhesive embedded in the slot.

2.1.9 The height of more than 4m full-glass curtain wall should be hung on the main structure, hanging fixture should meet the design requirements, glass to glass, glass and glass ribs between the gap, should be filled with silicone structural adhesive tight.

2.2 stone curtain wall material requirements:

2.2.1 stone curtain wall project materials used in the varieties, specifications, performance and grade, should be in line with the design requirements and the current national product standards and engineering specifications. Stone bending strength should not be less than 8.0Mpa; water absorption should be less than 0.8%. Stone curtain wall aluminum alloy pendant thickness should not be less than 4.0mm, stainless steel pendant thickness should not be less than 3.0mm. stone requires a consistent thickness, no cracks, color consistency and no other quality defects, in order to reduce the outside world on the pollution of the finish, the selected stone generally to do protective treatment.

2.2.2 metal frame and connectors of the anti-corrosion treatment should meet the design requirements. Aluminum alloy profile skeleton surface must be anodic oxidation treatment, steel skeleton must be hot dip galvanized anti-corrosion treatment, the project must be redone at the weld rust treatment, the project special parts of the stainless steel skeleton. news.stonebuy.com

2.2.3 Anchor: must be determined through the field pulling test to determine its bearing capacity.

2.2.4 metal pendant: pendant mainly stainless steel and aluminum alloy class two, pendant to have good corrosion resistance, pendant type to match the skeleton material, different types of metal should not be used at the same time, in order to avoid galvanic corrosion.

2.2.5 stone curtain wall fire prevention, heat preservation, moisture-proof materials should be set up in accordance with the design requirements, filling should be dense, uniform thickness.

2.2.6 fireproof layer should take isolation measures. Fire layer of the liner should be used by the anti-corrosion treatment and the thickness of not less than 1.5mm of steel, aluminum shall not be used. Fireproof layer of sealing materials should be fire sealant. Fireproof layer and glass should not be in direct contact, a glass should not cross two fire partition.

2.2.7 the main structure and curtain wall connection of various embedded parts, its number, specifications, location and anti-corrosion treatment must meet the design requirements.

2.2.8 The connection of the metal frame of the curtain wall and the buried parts of the main structure, the connection of the columns and beams and the installation of the curtain wall panels must be in accordance with the design requirements, and the installation must be firm.

2.2.9 The wall thickness of aluminum alloy profiles at the connection and hanging of unit curtain wall shall be determined by calculation and shall not be less than 5mm.

2.2.10 The metal frame of the curtain wall and the main structure shall be connected through the pre-embedded parts, which shall be buried in the main structure during the construction of the concrete, and the position of the pre-embedded parts shall be accurate, and shall be determined through the test to determine its bearing capacity.

2.2.11 column bolts and angle code connection, bolt diameter should be calculated, and should not be less than 10mm. different metal materials in contact with the use of insulating spacer separation.

2.3 metal curtain wall material requirements:

2.3.1 metal curtain wall project using a variety of materials and accessories, should be consistent with the design requirements and the current national product standards and engineering specifications.

2.3.2 The varieties, specifications, colors, gloss and installation of metal panels should meet the design requirements.

2.3.3 metal curtain wall on the main structure of the pre-embedded parts, the number of rear buried parts, location and the pull-out force of the rear buried parts must meet the design requirements.

2.3.4 The setting of fireproof, heat preservation and moisture-proof materials of the metal curtain wall shall conform to the design requirements, and shall be dense, even and of uniform thickness.

2.3.5 Anti-corrosion treatment of metal frames and connectors shall meet the design requirements.

2.3.6 Pre-embedded parts and connectors: skeleton anchorage is generally used pre-embedded parts or rear-embedded parts, rear-embedded parts form to meet the design requirements, and in the field to do tensile testing; steel plate connectors and non-homogeneous skeleton connection, the middle of the pad organic material pads, so as to avoid the occurrence of electrochemical corrosion.

2.3.7The bonding width of the silicone sealant between the concealed frame and semi-concealed frame curtain wall panels and metal frames shall be calculated separately for the bonding width of the silicone sealant under the action of the standard wind load and the standard weight of the panels, and take the maximum value, and shall not be less than 7.0mm.

2.4Curtain wall projects shall be re-examined with the following materials and their performance indicators:

2.4.1 peeling strength of aluminum composite panels.

2.4.2 stone bending strength: cold areas of stone resistance to freezing and thawing; indoor granite radioactivity.

2.4.3 glass curtain wall with structural adhesive Shore hardness, standard conditions of tensile bond strength, compatibility test; stone with structural adhesive bond strength; stone with sealant pollution.

2.5 Hidden frame, semi-hidden frame curtain wall used in the structural bonding material must be neutral silicone structural sealant, and its performance must comply with the "architectural use of silicone structural sealant" GB16766; silicone structural sealant must be used within the validity period.

2.6The curtain wall and its connectors shall have sufficient bearing capacity, rigidity and displacement capacity relative to the main structure. The connecting metal angle code of the curtain wall frame column and other connectors should be connected by bolts, and should be anti-loosening measures.

2.7Columns and beams and other major force components, the section of the force part of the wall thickness should be calculated to determine, and aluminum alloy profiles wall thickness should not be less than 3.0mm, steel profiles wall thickness should not be less than 3.5mm.

2.8Hidden frame, semi-hidden frame curtain wall components between the plate and the metal frame of the silicone structural sealant bonding width should be calculated separately for the standard value of the wind load and the weight of the plate. It shall not be injected on the wall at the site.

2.10 curtain wall fire protection in addition to the current national standard "building design fire code" GBJ16 and "code for the design of high-rise civil buildings fire code" GB50045 relevant provisions, should also comply with the following provisions:

1 should be based on the fire-resistant material fire-resistant limit to determine the thickness and width of fireproofing, and should be in the formation of the fire protection belt at the floor.

2 The fireproofing layer shall take isolation measures. The liner of the fireproof layer shall be made of corrosion-resistant treated and thickness

3 The sealing material of the fireproof layer shall be fireproof sealant.

4 fireproof layer and glass should not be in direct contact, a glass should not span two fire partition.

2.11 the main structure and curtain wall connection of all kinds of embedded parts, its number, specifications, location and anticorrosion treatment must be in line with the design requirements.

2.12 the curtain wall of the metal frame and the main structure of the buried parts of the connection, columns and beams of the connection and the installation of the curtain wall panels must meet the design requirements, the installation must be firm.

2.13 The wall thickness of aluminum alloy profiles at the joints and hangings of the unit curtain wall shall be calculated and shall not be less than 5mm.

3, the main machinery (tools):

3.1 The main machinery (tools) of the glass curtain wall project:

3.1.1 The main machinery and tools: electric hammer, electric drill, electric welder, aluminum alloy cutting machine, toothless saw and warp and woof, etc.

3.1.2 Main tools: riveting gun, plate hand, hammer, ruler, line drop, hand pliers, square ruler, ruler, wallpaper cutter, glue gun and so on.

3.2 stone curtain wall project main machinery (tools):

3.2.1 main machinery: electric hammer, welding machine, profile cutting machine, mica saw, angle grinder.

3.2.2 Main tools: hanging basket, gluing machine, wallpaper cutter and so on.

3.3 Metal curtain wall project main machinery (tools):

3.3.1 Main machinery: welding machine, profile cutting machine, pistol drill, self-tapping drill and slotting machine.

3.3.2 Main tools: gluing gun, screwdriver, wrench, pliers, wallpaper cutter and so on.

4, operating conditions:

4.1 construction technology responsible person in charge of the construction should be done before the construction of technical briefing to the construction staff, to make clear the pre-buried fixed support, aluminum alloy skeleton system of the division of the size and form, the method of connection between the glass and the skeleton and the requirements of the connection and so on.

4.2 construction personnel in clear drawings before construction.

4.3 scaffolding should be set up during the construction to ensure the safety of scaffolding, and reserve space for the operation of the construction personnel, scaffolding should be set up on the safety net, so as to avoid objects falling and injuring people during the construction of the curtain wall.

4.4 curtain wall construction before the main body of the building needs to be accepted, and concrete strength to meet the requirements of the curtain wall design; curtain wall construction drawings have been drawn perfect, and has been recognized by all parties; according to the requirements of the design of the construction organization, personnel, machinery and pre-construction materials are in place, enough work surface.

5, construction technology:

1, glass curtain wall construction process

1, process:

Layout and positioning → installation columns → installation beam → installation of glass → gluing → cleanup

2, operation process

1, according to the shape of the glass curtain wall, dimensions and drawing requirements, in the aluminum alloy skeleton system and building structure Set the connection between the aluminum alloy skeleton system and the building structure. When the sample is released, the upper and lower supports should be on a vertical line to avoid the column in this position will be skewed.

(2), the installation of standing. In the fixed support between the two angles, with stainless steel tensile bolts will be installed according to the elevation requirements of the column fixed, the column axis of the front and rear deviation and left and right deviation should not be greater than 2mm and 3mm respectively. support angle and aluminum alloy column contact with flexible gaskets for isolation. The column should be fastened in time after installation and adjustment. Columns in the lengthening of the application of supporting special core tube connection, the upper and lower columns should be left between the gap, the gap width should not be less than 10m, the joints should be movable joints, so as to meet the columns in the thermal expansion and contraction of deformation occurs when the demand.

3, the installation of beams. First determine the elevation of each beam in the square column position, in this position with a thickness of not less than 3mm aluminum angle will be connected to the beams and columns, in the beams and columns should be set at the contact with the elastic rubber school pad. The horizontal elevation deviation of two adjacent beams should not be greater than 1mm. the elevation deviation of the beams of the same layer should not be greater than 5mm when the width of the curtain wall is less than or equal to 35m; when the width of the curtain wall is greater than 35m, it should not be greater than 7mm, and the same layer of beams should be installed from the bottom up. When the height of a layer of beams installed, should be checked, adjusted, corrected and then fixed.

(4) installation of glass glass installation should be based on the specific type of curtain wall. If the curtain wall glass is coated glass, the coated side should be toward the interior.

①hidden frame curtain wall glass: hidden frame curtain wall glass is bonded to the aluminum alloy frame with structural silicone adhesive, thus forming a glass unit. The processing of the glass unit is generally done in the factory with a special gluing machine. This ensures the quality of the glass bond. In the construction site by the influence of environmental conditions, it is more difficult to ensure the bonding quality of glass and aluminum alloy frame. After the glass unit is made, the upper side of the aluminum alloy frame in the unit is hung on the beam, and then the remaining three sides of the aluminum alloy frame are hooked and clamped on the columns and beams with a special fixing piece, and the number of fixing pieces on each side of the frame is not less than two pieces.

2 open frame glass curtain wall. Open frame curtain wall glass is fixed with pressure plate and rubber for the beams and columns, pressure plate and then bolted to the beams or columns. When fixing the glass, the connecting bolts on the pressure plate should be loosened and tightened appropriately so that the pressure plate on the glass will not be pressed too tightly or too loosely. And make the rubber strip between the platen and the glass tightly closed. Set up positioning pads on the beam, the pads of the resting point from the vertical edge of the glass distance from the vertical edge of the glass should be 1/4 of the width of the glass, and should not be less than 150mm, the width of the pads should not be greater than the thickness of the glass supported, the length should not be less than 25mm, and meet the relevant requirements.

3 semi-hidden frame curtain wall. Semi-hidden wall curtain wall in one direction hidden frame, on the other hand, the frame. It is in the hidden frame direction of the glass edge with structural silicone adhesive fixed, in the direction of the glass edge of the frame with pressure plate and connecting bolts, hidden frame edge and frame edge of the specific construction methods can be referred to the hidden frame curtain wall and open frame curtain wall glass installation methods.

(5) gluing: the temperature and humidity of gluing should meet the requirements of the relevant specifications.

(6) cleaning: after the glass installation of glass curtain wall, neutral detergent and water should be used to clean the contaminated glass and aluminum profiles.

Two, stone curtain wall construction process

1, process:

pre-embedded parts location size check → installation of pre-embedded parts → retest pre-embedded parts location size → measurement and placement → drawing project turnover map → metal skeleton processing → steel structure brush rust paint → metal skeleton installation →

fire insulation cotton → hidden engineering acceptance → stone veneer processing → stone Surface protection→

Stone panel installation→Installation quality inspection→Infusion of embedded silica gel→Curtain wall surface cleaning

2, the operation process:

(1) Embedded parts installation:

Embedded parts should be buried in the construction of civil engineering construction, the curtain wall should be based on the construction of the project datum axis and the center line as well as the datum level to the embedded parts to carry out checking and checking, the general allowable position size deviation of ±20%. Position size deviation of ± 20mm. if the position of the embedded parts is too poor to use or leakage, according to the actual situation should be proposed to choose the expansion bolt program, and must be reported to the design unit for review and approval, and should be done at the scene of the pull-out test, make a good record.

(2) Measurement and placement:

①As the civil construction allowable error is large, the curtain wall project construction requires high precision, so can not rely on the civil level datum, must be re-measured by the datum axis and leveling points, and corrected and double-checked.

②In accordance with the design of the curtain wall in the ground floor to determine the positioning line and compartmentalized line.

③ latitude and longitude or laser vertical instrumentation will be the curtain wall of the sun and yin corner of the lead, and fixed in the steel bracket on the steel wire line as a sign of control line.

④Use the level meter and standard steel tape measure etc. to lead the elevation line of each layer.

⑤ Determine the centerline of each elevation.

⑥Measurement should be controlled to distribute the measurement error, and the error should not be allowed to accumulate.

⑦Measuring and placing should be carried out under wind force not more than grade 4, and measures should be taken to avoid wind.

⑧ all facade decoration works should be unified to put the baseline, and pay attention to construction cooperation.

(3) metal skeleton installation

①Check the placement position according to the construction pattern drawing.

②Installation of fixed vertical frame iron.

③First install the vertical frame at the two ends of the same elevation, and then install the middle vertical frame in the order of pulling through the line.

④Lead the construction level control line to the vertical frame, and check with a level.

⑤Install the metal beam according to the design size. The beam must be perpendicular to the vertical frame.

6 If there is welding, the finished product should be protected underneath and adjacent to the finished decorative surface. Welding should be done symmetrically to reduce the deformation caused by welding. After checking the quality of welded seams, all welded joints and seams need to be de-slagged and anti-rust treatment, such as brushing anti-rust paint.

⑦To be completed after the metal skeleton, should be through the supervision company on the hidden engineering inspection before the next process.

(4) fire prevention, thermal insulation material installation

①Must use qualified materials, i.e., required to have a factory certificate of conformity.

② In each floor and slate curtain wall can not have a gap between the application of galvanized steel and fire cotton to form a fire belt.

③ In the northern cold regions, the insulation layer should preferably have waterproof, moisture-proof protective layer, filled in the metal skeleton fixed, require tight and firm.

④ curtain wall insulation layer construction, insulation layer should be waterproof, moisture-proof protective layer, in order to fill in the metal skeleton fixed tight and reliable.

(5) stone veneer installation

①Stone veneer will be transported to the site according to the number of classification, check whether the size is accurate and whether there is no damage, lack of corrugation, corner, according to the construction requirements of the stone veneer will be transported to the construction of the surface of the level near the surface and pay attention to the placement of reliable.

②First according to the curtain wall surface datum line carefully installed the bottom of the first skin stone plate.

3 attention to the placement of each skin metal pendant elevation, metal pendant should be tightly supported on the skin panel, and the lower skin panel with a gap between the panels.

④Installation, the pin holes in the panel or groove in the injection of stone glue to ensure that the panel and the reliable connection of the pendant.

⑤Installation, it is advisable to complete the stone panel edging around the window opening first to avoid installation difficulties.

6 installation to each floor elevation, pay attention to adjust the vertical error, do not accumulate.

⑦ in the handling of stone slabs, there should be safety precautions, placed underneath the pad wooden square.

(6) embedded glue to seal the seam between the stone plate is the first waterproofing measures of the slate curtain wall, but also make the slate curtain to form a whole.

①According to the design requirements to choose qualified and not expired weatherproof embedded seam sealer. It is best to use less silicone oil containing stone special inlay adhesive, so as to avoid silicone oil infiltration contamination of the stone surface.

② with a convex scraper filling foam round, to ensure that the minimum depth and uniformity of the glue joints. Selected foam round bar diameter should be greater than the width of the seam.

3 in the glue seam on both sides of the paper tape paper protection, in order to avoid embedded seam adhesive contamination of the surface quality of the stone plate.

④Scrub the surface of the stone plate at the seam with special cleaner or oxalic acid.

⑤Sent trained workers to inject glue, glue injection should be uniform and no flow, while playing glue with a special tool to hook the seam, so that the seam sealant is a micro-arc concave surface.

6 construction should pay attention to not have a leakage of glue pollution wall, such as wall stained with glue should be immediately wiped away, and use the cleaner to wipe the remaining glue.

7 in the wind and rain can not inject glue.

(7) cleaning and protection

After the construction is completed, remove the tape paper on the surface of the stone plate, wipe the surface of the stone with water and detergent, and wax or brush the protective agent as required.

Three, metal curtain wall construction process

1, process:

Measurement and placement → anchors production, installation → skeleton production and installation → panel installation → inlaid joints gluing → cleaning

2, the operation process:

(1) Measurement and placement:

Accurately measured and placed according to the design and the actual situation on the site of curtain walls, the outer edge line and horizontal and vertical control lines. According to the design and the actual situation of the construction site to accurately measure and put out the outer edge line and horizontal vertical control line, and then the center line of the vertical frame of the skeleton according to the design of the compartmentalized dimensions of the pop-up to the structure. Measurement and placement should be carried out under the weather condition that the wind force is not more than grade 4, and windproof measures should be taken in individual cases.

(2), anchor installation:

Curtain wall frame anchors should be used as far as possible pre-embedded parts, in the absence of pre-embedded parts in the case of the use of rear-embedded parts, embedded parts of the structural form of the design requirements, anchor bolts should be on-site pulling test to meet the strength requirements before use. Anchor generally consists of buried plate and connecting angle code, construction in accordance with the design requirements in the vertical frame has been measured and placed on the centerline accurately marked buried plate position, after punching holes will be buried fixed, and will be the centerline of the vertical frame led to the buried parts, and then calculated to connect the corner of the position of the angle code, marking the line on the buried plate, the same vertical frame with the same side of the connecting corner of the code position should be pulled through the line to detect that can not be deviated from. Angle code position is determined, the angle code according to this position welded to the buried plate, weld width and length to meet the design requirements, welded welded weld to be redone after rust treatment, generally painted with anti-rust paint two times.

(3), skeleton production and installation:

According to the construction drawings and the actual situation of the site to determine the size of the compartment, in the processing site, under the skeleton of the horizontal and vertical material, and transported to the site for installation, before installation, according to the design dimensions of the skeleton skin control line, hanging line must be accurate, the quality of its control will have a direct relationship with the quality of the curtain wall finishes, skeleton, if you use aluminum alloy profiles, the anchors are generally bolted. Anchor generally use bolt connection, skeleton in the connection between the insulating gasket, bolt material specifications and quality to meet the design requirements and specifications, skeleton such as the use of steel, connectors can be used to bolt can also be used to connect the welding method, the welding quality to meet the design requirements and specifications, and to re-do the anti-rust treatment.

The main structure and curtain wall connection of various embedded parts, its number, specifications, location and anticorrosion treatment must meet the design requirements.

The connection between the metal frame of the curtain wall and the pre-embedded parts of the main structure, the connection between the columns and beams and the installation of the curtain wall panels must be in accordance with the design requirements, and the installation must be firm.

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