CN114412035B - Construction method of semi-hidden frame glass curtain wall of large building - Google Patents
Construction method of semi-hidden frame glass curtain wall of large building Download PDFInfo
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- CN114412035B CN114412035B CN202111680841.8A CN202111680841A CN114412035B CN 114412035 B CN114412035 B CN 114412035B CN 202111680841 A CN202111680841 A CN 202111680841A CN 114412035 B CN114412035 B CN 114412035B
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/88—Curtain walls
- E04B2/96—Curtain walls comprising panels attached to the structure through mullions or transoms
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/94—Protection against other undesired influences or dangers against fire
- E04B1/941—Building elements specially adapted therefor
- E04B1/942—Building elements specially adapted therefor slab-shaped
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
- E04G21/16—Tools or apparatus
- E04G21/18—Adjusting tools; Templates
- E04G21/1841—Means for positioning building parts or elements
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- Load-Bearing And Curtain Walls (AREA)
Abstract
The invention discloses a construction method of a semi-hidden frame glass curtain wall of a large building, which is characterized by comprising the following steps: step one, measuring and paying off; step two, checking and installing embedded parts; step three, pre-assembling the transverse and vertical keels; step four, installing galvanized connectors, namely installing a vertical main keel and a horizontal secondary keel; step six, constructing heat preservation nodes; step seven, constructing fireproof nodes; step eight, concealing and checking acceptance; step nine, installing a glass plate; step ten, installing an opening fan; step eleven, sealing; and step twelve, completion acceptance. The invention ensures the stability of the semi-hidden frame glass curtain wall after installation by arranging the working procedures and checking and installing the method and the structure of each step, and has excellent heat preservation and water resistance.
Description
Technical Field
The invention belongs to the field of buildings, and particularly relates to a construction method of a semi-hidden frame glass curtain wall of a large building.
Background
The curtain wall is an outer wall enclosure of a building, is not bearing, is hung like a curtain, is also called as a curtain wall, and is a light wall with a decorative effect commonly used in modern large-scale and high-rise buildings. At present, a plurality of buildings are beautiful, and a semi-hidden frame glass curtain wall is adopted during construction, wherein the semi-hidden frame glass curtain wall is horizontally hidden and vertically hidden or vertically hidden and horizontally hidden. In any semi-hidden frame curtain wall, one corresponding side is bonded into a glass assembly component by structural adhesive, and the other corresponding side is assembled by adopting an aluminum alloy embedded groove glass assembly method. The construction is easy to cause various engineering flaws and hidden danger, so that a construction method is needed to ensure the safety of the installation.
Disclosure of Invention
In order to solve the problems, the invention provides a construction method of a semi-hidden frame glass curtain wall of a large building. The invention ensures the stability of the semi-hidden frame glass curtain wall after installation by arranging the working procedures and checking and installing the method and the structure of each step, and has excellent heat preservation and water resistance.
In order to achieve the technical effects, the technical scheme of the invention is as follows:
a construction method of a semi-hidden frame glass curtain wall of a large building comprises the following steps:
step one, measuring and paying off;
step two, checking and installing embedded parts;
step three, pre-assembling the transverse and vertical keels;
step four, installing galvanized connectors;
step five, installing a vertical main keel and a horizontal secondary keel;
step six, constructing heat preservation nodes;
step seven, constructing fireproof nodes;
step eight, concealing and checking acceptance;
step nine, installing a glass plate;
step ten, installing an opening fan;
step eleven, sealing;
and step twelve, completion acceptance.
Further improvement, the first step comprises the following steps:
1.1 Rechecking the correctness of the elevation line of the civil structure:
the method comprises the steps of taking a given elevation and an axis of a civil engineering as references, checking the accuracy of the elevation of the civil engineering at intervals of 2-3 layers by using a level gauge, a laser theodolite, a 50-meter long tape and a plumb with proper weight, and checking the accuracy of the reference axis at the same time; if the civil engineering elevation is found to be inaccurate, marking is additionally carried out, a mark special for a curtain wall is needed, and the rechecking condition is reported to a total package unit and supervision;
when the elevation rechecking is carried out, the condition that the elevation of the main skirt building is different due to the settlement of the building body is paid attention to, and the consistency of the elevation of the main skirt building is ensured.
1.2 Determining a datum layer for curtain wall construction measurement paying-off
Each floor plane change layer is determined to be a reference layer, and the number of the reference layer interval layers is not more than 2; 1.3 Rechecking the closing condition of the reference layer civil engineering reference point and line
Rechecking the angle and the distance of a civil engineering datum point and a line by using a theodolite and a 50-meter long reel, if deviation is found, carrying out uniform deviation treatment, and recording the influence of temperature and pull rule strength on a measurement result when the measurement is carried out, and correcting; when the deviation between the measurement result and the design result is found to be larger than a preset threshold value, reporting the total package and the supervision company to perform joint measurement and deviation correction;
1.4 Based on the rechecked datum point or datum line, making an auxiliary measuring line required by the construction of the adapter;
1.5 Checking the edge size of the structure according to the correct control line and the main structure diagram, if the out-of-tolerance phenomenon is found, reporting the total package in time for chiseling so as not to influence the installation progress of the plate.
1.6 Measurement of civil structure:
carrying out retest work according to the axis and elevation provided by civil engineering;
1.7 Height, levelness, plumb line measurement:
measuring the flatness of the peripheral edge of each floor by using a leveling instrument from +/-0.000 as a reference, measuring the transverse levelness and the longitudinal levelness of each adapter by using a leveling ruler and a leveling instrument, layering and fixing a 50M steel tape hung with a 20kg weight on the outer facade of the floor, measuring respectively by using a constant-height method after standing, calculating the actual elevation of each floor and the actual total height of a building structure, recording a height mark at the same position of a column or a shear wall by using paint, protecting the height mark from being eliminated and destroyed before the curtain wall is installed, and measuring the elevation measurement error: the total elevation is less than or equal to +/-3 mm and less than or equal to +/-20 mm; placing plumb lines at the positions of the reference axes by using a plumb instrument in the plumb direction, measuring the in-out errors of the floor slab, and determining control lines;
1.8 Contour line measurement):
after a reference control layer is determined according to the relation between each axis of a building structure and the outer diameter size calibrated by a design drawing, a rectangular reference point control network for controlling the same vertical plane of a curtain wall unit and the distance of a connecting line of the rectangular reference point control network are respectively determined by a horizontal dial and a vertical dial of a theodolite, the vertical error between the reference points is controlled in a projection range with the diameter of 5mm, and the direct distance error of the connecting line of the reference points is not more than 3mm; measuring and marking the outline of the structure by taking a rectangular reference control network as a basis; if the data difference between the measurement result and the data provided by civil engineering is greater than a preset threshold, a renovation opinion is provided, and after the renovation, the measurement is carried out again before curtain wall construction until the data difference is not greater than the preset threshold;
1.9 Dividing and positioning pay-off work of each curtain wall variety on site, wherein the positioning is used for providing an installation standard for construction installation personnel so as to ensure the quality of product installation in the construction process; the curtain wall is installed from bottom to top, and vertical grid lines are arranged according to vertical grid dividing surfaces and in-out control points.
Further improvement, the second step comprises the following steps: and (3) checking the installation position of the embedded fastener, and if the installation position exceeds the deviation requirement, adopting a steel plate with the same thickness as the embedded fastener and the same material, wherein one end of the steel plate is welded with the embedded fastener in a peripheral welding mode.
Further improvement, the fourth step comprises the following steps:
4.1 Processing the connecting piece according to the design drawing, and carrying out hot galvanizing treatment on the surface;
4.2 Checking and adjusting paying-off results according to the drawing;
4.3 Welding and fixing the connecting piece on the pre-buried fastening piece; during welding, welding should be symmetrically performed;
4.4 If a gap of more than 1mm is found between the bottom plane of the connecting piece and the embedded fastener, a backing plate is required to be additionally arranged.
Further improvement, the fifth step comprises the following steps:
5.1 Connecting pieces at the upper end and the lower end of the vertical main keel are aligned with bolt holes of the embedded fasteners and are preliminarily fixed by bolts; and an anti-corrosion insulating plate with the thickness of 1mm is arranged between the vertical main keel and the connecting piece;
5.2 The main joist position is adjusted, the upper and lower positions are verified with the floor elevation line, the left and right positions correspond to the axis sizes of the two sides, and after the main joist size is calibrated, the bolts are screwed by using a spanner; core tubes are added between each two layers of main keels for butt joint so as to meet the requirement of interlayer deformation;
5.3 After the main joists are assembled to the top layer in a layered and aligned mode from bottom to top, checking the perpendicularity, and fastening bolts after the correctness is determined;
5.4 Cleaning welding slag, polishing to be smooth, and brushing two rust-proof paints on the welding seam part;
5.5 After the main keel is installed, the connecting piece is penetrated on the transverse keel in advance, the transverse keel is installed at a designated position, the connecting piece is installed by 2 bolts at the perforated position of the profile, and the bolts are screwed after the adjustment is correct.
Further improvement, the sixth step comprises the following steps:
fixing a 100-thickness hydrophobic rock wool plate by using a plastic expansion screw, wherein the heat conductivity coefficient of the plastic expansion screw is less than or equal to 0.040W/MK; and then the fluorocarbon spraying surface of the aluminum plate faces outwards, and the aluminum plate is fixed on an aluminum keel by using self-tapping nails, wherein the fixed point of each side of the aluminum plate is not less than 2.
Further improvement, the seventh step comprises the following steps: and a galvanized steel sheet with the thickness of 1.5mm is arranged at the installation position of the fireproof node, one end of the galvanized steel sheet is connected with the curtain wall beam, the other end of the galvanized steel sheet is connected with the building structure, after the galvanized steel sheet is fixed, 200mm thick fireproof rock wool is filled, a continuous fireproof isolation layer between layers is formed, and then the upper cover plate is fixed.
Further improvement, the step nine comprises the following steps:
9.1 Transporting qualified glass plates to the site;
9.2 Transporting the glass to each floor designated place by using vertical transport equipment; glass installation is carried out from top to bottom;
9.3 When the glass is coated glass, the coated sheet faces outdoors and the non-coated sheet faces indoors during installation, and the glass label is removed by an art designer;
9.4 Cleaning the periphery of the inner side of the transverse keel frame and the inner side of the vertical keel frame, and installing embedded clamping strips and sealing strips in the frame; the rubber strips around the glass are selected according to the specified model, are inlaid and leveled, the length of the rubber strips is 1.5-2% longer than that of the groove openings in the frame, the fractures are left at four corners, the inclined surfaces are cut off and then spliced into a preset design angle, and the rubber strips are embedded into the grooves after being firmly bonded;
9.5 Drilling and threading on the upper and lower cross beams and the upright posts of each piece of exposed frame glass in advance;
9.6 2 pieces of glass cushion blocks are arranged below the glass plates on the lower cross beam of each piece of glass according to the design position of the drawing;
9.7 Manually placing the glass on the glass cushion block, standing the glass to cling to the aluminum alloy keel frame, so that four sides of the glass are uniformly framed, gaps are uniform, and the plate surface is flat.
9.8 Mounting the glass plate in place, and after the adjustment of the upper, lower, left and right is finished, using an aluminum alloy pressing plate to place the glass on the glass so as to prevent the glass from sliding out, wherein the aluminum alloy pressing plate is not arranged in a full length mode;
9.9 The pressing plate is fixed with the aluminum keel by a stainless steel screw;
9.10 After the glass is installed, uniformly fixing the aluminum alloy outer buckle cover on the aluminum alloy pressing plate, and fixing the aluminum alloy outer buckle cover by using stainless steel screws, wherein the vertical lines of the outer buckle cover are vertical to form a line.
Further improvement, the step ten comprises the following steps:
10.1 Before the opening of the fans is processed in a large scale, a complete opening of the fans is processed, and the fans are processed in a large scale after trial assembly;
10.2 Using outdoor elevator to transport the opening frame fan to each floor appointed place;
10.3 Firstly, the opening frame is installed in place, and the verticality and the flatness are adjusted;
10.4 Performing glue spraying treatment on four sides of the opening frame;
10.5 After curing and solidifying the sealant, installing an opening fan;
10.6 The lever handle and the hinge are arranged on the opening fan in advance, the hinge is opened, the opening fan is slowly pushed to the beam hole to the hinge installation position, and then the hinge is fixed on the opening frame;
10.7 The position of the lock seat is adjusted so as to be matched with the lock point position, so that the opening fan is normally opened and closed.
The invention has the advantages that:
the invention ensures the stability of the semi-hidden frame glass curtain wall after installation by arranging the working procedures and checking and installing the method and the structure of each step, and has excellent heat preservation and water resistance.
Drawings
FIG. 1 is a schematic flow chart of the present invention.
Detailed Description
The technical scheme of the invention is specifically described below through the specific embodiments and with reference to the accompanying drawings.
Example 1
As shown in the flow chart of FIG. 1, the construction method of the semi-hidden frame glass curtain wall of the large building comprises the following steps:
1.3.2 preparation for construction
1.3.2.1 engineering mating:
project managers and engineering manager designers carry out engineering delivery on the installation team according to the contents and requirements of construction organization design and design drawings, define the requirements of engineering and carry out construction installation according to the requirements.
1.3.2.2 technical training:
the method comprises the steps that relevant personnel of an organization installation team carry out safety and technical training, are familiar with drawings, master the working content of engineering construction, and sign contracts such as safety with the installation team; and making a safe and technical bottom record.
1.3.2.3 preparation of materials:
the main materials of the engineering, such as aluminum profiles, steel, glass, aluminum plates and the like, are manufactured in a production center of a company after being purchased according to contract regulations, assembled and molded by an assembly factory and then sent to a construction site in batches. The materials such as accessories, hardware, various glues, fillers and the like are sent to the construction site by fixed-point manufacturers.
1.3.2.4 transportation: and (5) determining the access site, the unloading site and the vertical transportation equipment of the material transportation vehicle.
1.3.2.5 construction machine tool, determining the construction machine tool according to the condition of the construction site. And the tool and the measuring tool required in construction are comprehensively and systematically checked, so that normal use in construction is ensured.
1.3.3 preparation of construction survey lofting and structural surfaces
1.3.3.1 measurement pay-off
(1) Checking correctness of elevation line of civil engineering structure
(1) The accuracy of the civil engineering elevation is checked by taking the given elevation and axis of the civil engineering as the standard and using a level gauge, a laser theodolite, a measuring tape with the length of 50 meters and a plumb with proper weight at intervals of 2-3 layers. While checking the correctness of the reference axis.
(2) If the civil engineering elevation is found to be inaccurate, a mark should be additionally marked, a mark special for a curtain wall should be provided, and the rechecking condition is reported to a total package unit and supervision.
(3) When the elevation rechecking is carried out, the important attention is paid to the condition that the elevation of the main building and the elevation of the skirt building are different due to the settlement of the building body, and the consistency of the elevation of the main building and the skirt building is ensured.
(2) Datum layer for determining curtain wall construction measurement paying-off
(1) The floor plane change layer is determined as a reference layer for each layer.
(2) The number of the reference layer intervals is not more than 2-3.
(3) Checking the closing condition of the datum layer civil engineering datum point and line
(1) And (3) rechecking the angle and the distance of the civil engineering datum point and the line by using a theodolite and a 50-meter long reel, and if the deviation is found, carrying out mean deviation treatment.
(2) When measuring, attention should be paid to the influence of temperature and pull rule strength on the measurement result, and appropriate correction should be performed. (spring balance)
(3) When a larger deviation of the measurement result is found, the total package and the supervision company should be reported in time to perform joint measurement and deviation correction.
(4) And (5) making an auxiliary measuring line required by the construction of the adapter according to the rechecked datum point or datum line.
(5) And (3) rechecking the structure edge size according to the correct control line and the main structure diagram, and if an out-of-tolerance phenomenon is found, reporting the total package in time for chiseling so as not to influence the installation progress of the plate.
Measurement of 1.3.3.2 civil constructions
And carrying out retest work according to the axis and the elevation provided by civil engineering.
1.3.3.3 height, levelness, plumb line measurements
Measuring the flatness of the peripheral edge of each floor by using a leveling instrument from +/-0.000 as a reference, measuring the transverse levelness and the longitudinal levelness of each adapter by using a leveling ruler and a leveling instrument, layering and fixing a 50M steel tape hung with a 20kg weight on the outer facade of the floor, measuring respectively by using a constant-height method after standing, calculating the actual elevation of each floor and the actual total height of a building structure, recording a height mark at the same position of a column or a shear wall by using paint, protecting the height mark from being eliminated and destroyed before the curtain wall is installed, and measuring the elevation measurement error: the layers are less than or equal to +/-3 mm, and the total elevation is less than or equal to +/-20 mm. Plumb lines are placed at the positions of the reference axes by a plumb line instrument in the plumb direction, the in-out errors of the floor slabs are measured, and control lines are determined. The instruments used are a laser theodolite, a level meter, a plumb meter, a long ruler, a spring balance and the like.
1.3.3.4 contour line measurement
According to the relation between each axis and the outer diameter of the building structure calibrated by the design drawing, selecting a reference control layer, and determining a rectangular reference point control network for controlling the same vertical plane of the curtain wall unit and the distance of a connecting line of the rectangular reference point control network by using a horizontal dial and a vertical dial of the theodolite, wherein the vertical error between the reference points is controlled in a projection range with the diameter of 5mm, and the direct distance error of the connecting line of the reference points is not more than 3mm. And measuring and releasing the structural contour line based on a rectangular reference control network, determining the deviation degree between the actual size and the design size of the building structure, and delivering the structural area which is larger or smaller than the design deviation requirement to the construction unit for acceptance and use after finishing. The contour is the only correct sign of the overall structural dimension that meets the design requirements, and care must be taken to properly protect against being eliminated and covered.
1.3.3.5 according to the measured result, such as that the data provided by civil engineering is large or exceeds the normal allowable error range, the refurbishment opinion is put forward, so that effective measures are taken to make the measuring work before construction put into place.
1.3.3.6, after being audited, the retest report submitted by the design department of the company is submitted to the constructor, supervision, general package and related authority departments to be audited, and the site construction installation scheme and plan are finally determined for the on-schedule implementation of the project.
1.3.3.7 paying off works of dividing and positioning each unit variety on site according to the approved design drawing and site construction installation drawing before construction and installation, and positioning is to provide a mounting standard for construction installer so as to ensure the quality of product installation in the construction process.
The 1.3.3.8 curtain wall is installed from bottom to top, and vertical grid lines are arranged according to the vertical grid faces and the access control points.
The main instruments used in the measuring and paying-off process of 1.3.3.9 are a laser plumb meter, a laser theodolite, a high-power level gauge and the like (all passing qualification instruments).
1.3.4 inspection and installation of buried parts
If the pre-buried fastening piece exceeds the deviation requirement, the same thickness as the pre-buried fastening piece and the same material steel plate are adopted, one end of the pre-buried fastening piece is welded with the pre-buried fastening piece, and peripheral welding is carried out according to the design requirement.
1.3.5 Pre-Assembly of horizontal and vertical Keel
1.3.5.1 after the horizontal keel and the vertical keel enter the field, carrying out comprehensive verification and correction according to the actually measured size of the paying-off line.
1.3.5.2 installing connectors on the main joists according to the construction drawing.
1.3.6 mounting galvanized connector
1.3.6.1 connecting pieces are processed according to design drawings, and the surface is subjected to hot galvanizing treatment;
1.3.6.2 checking and adjusting paying-off results according to the drawing.
1.3.6.3 the connector is welded to the pre-buried fastener.
1.3.6.4 if a gap of more than 1mm is found between the bottom surface of the connector and the embedded fastener, a backing plate of appropriate thickness must be added.
1.3.6.5 welding is generally referred to as welding to control the deformation due to the welding stress.
The height and length of the 1.3.6.6 weld should meet the design requirements, and the weld should not have the defects of slag inclusion, air holes, cracks, undercut and the like.
1.3.6.7 cleaning welding slag and polishing to be smooth, and then coating antirust paint on the welding seam part in time for antirust treatment.
1.3.7 vertical Main Keel mounting
Connecting pieces at the upper end and the lower end of the 1.3.7.1 vertical main joist are aligned with bolt holes of pre-embedded fasteners and are preliminarily fixed by bolts; an anti-corrosion insulating plate with the thickness of 1mm is placed between the main keel and the connecting piece so as to prevent electrochemical corrosion among different metals.
1.3.7.2 the main joist position is adjusted, the upper and lower positions are verified by the floor elevation line, and the left and right positions correspond to the axial line sizes of the two sides. After the main joist size is calibrated, the bolts are screwed down by using a spanner.
After the 1.3.7.3 main joists are assembled to the top layer in a bottom-up layered and calibrated manner, strict verticality checking is required, and the main joists are subjected to overall correction and adjustment by using a theodolite. After the correctness is determined, the bolt is fastened.
1.3.7.4 the welding slag is removed, the welding slag is polished to be smooth, and the welding joint part is brushed with two rust-proof paints.
1.3.7.5 note that core tubes must be added between each layer of main joists for butt joint so as to meet the requirement of interlayer deformation.
1.3.8 transverse secondary joist installation of glass curtain wall
1.3.8.1 a layer of vertical keels are installed and adjusted without errors.
1.3.8.2 the connecting piece is worn on the transverse keel in advance, then the transverse keel is installed at the appointed position, the connecting piece is installed through 2 bolts at the perforated position of the profile, and after the connecting piece is adjusted, the bolts are screwed down.
1.3.9 hidden node construction
1.3.9.1 insulation node construction
(1) The 100-thickness hydrophobic rock wool plate is fixed by a plastic expansion screw (the heat conductivity coefficient is less than or equal to 0.040W/MK).
(2) And (3) the fluorocarbon spraying surface of the aluminum plate faces outwards, and the aluminum plate is fixed on an aluminum keel by using a self-tapping screw, wherein the fixed point of each side of the aluminum plate is not less than 2.
1.3.9.2 fireproof node construction
A galvanized steel sheet with the thickness of 1.5mm is arranged at the installation position of the fireproof node. One end of the galvanized steel sheet is connected with the curtain wall beam, and the other end is connected with the building structure. The support plate should be firmly installed, and the connection gap and notch are not allowed to appear. After the galvanized steel sheet is fixed, 200mm thick fireproof rock wool is filled. Forming a continuous fireproof isolation layer between layers, and fixing the upper cover plate.
1.3.9.3 concealed acceptance check
The meeting site supervision engineer carries out acceptance on the hidden node, and the acceptance items comprise: whether the connection structure, the welding quality, the fireproof method and the heat preservation method meet the design requirements and the relevant national specifications.
1.3.10 glass plate mounting
1.3.10.1 transporting the qualified glass plate to the site;
1.3.10.2 transporting the glass to each floor designation site using vertical transport means; glass installation is carried out from top to bottom;
before 1.3.10.3 glass is installed, dust and dirt on the surface should be wiped clean, a coated glass is installed, a coated film sheet faces outdoors, a non-coated film face indoors, and glass labels are removed by a utility knife, and attention is paid to not scratch the glass;
1.3.10.4 cleaning the periphery of the inner side of the transverse keel frame and the inner side of the vertical keel frame, and mounting embedded clamping strips and sealing strips in the frame; the rubber strips around the glass are selected according to the specified model, the rubber strips are inlaid and leveled, the length of the rubber strips is 1.5-2% longer than the mouth of the groove in the frame, the fracture of the rubber strips is left at four corners, the inclined surfaces are broken, and then the rubber strips are spliced into a preset design angle, and the rubber strips are embedded into the groove after being firmly bonded;
1.3.10.5 on the upper and lower cross beams and the upright posts of each piece of exposed frame glass, threading is drilled in advance;
1.3.10.6 on the lower beam of each glass, 2 glass cushion blocks are arranged below the glass plate according to the design position of the drawing;
1.3.10.7 the glass is lightly placed on the glass cushion block manually, and the glass is vertically clung to the aluminum alloy keel frame, so that four sides of the glass are uniformly framed, gaps are uniform, and the plate surface is flat.
1.3.10.8 the glass plate is installed in place, and after the adjustment of the upper, lower, left and right is finished, the glass is covered by an aluminum alloy pressing plate to prevent the glass from sliding out, and the aluminum alloy pressing plate is not arranged in a full length mode.
The 1.3.10.9 pressing plate is fixed with the aluminum keels by stainless steel screws.
After the glass on the 1.3.10.10 surface is installed, the aluminum alloy outer buckle cover is uniformly fixed on the aluminum alloy pressing plate and fixed by stainless steel screws, and the vertical lines of the outer buckle cover are vertical to form a line.
1.3.11 open fan mounting
1.3.11.1 before processing the opening fans in large quantities, processing a complete opening fan (comprising an opening frame) in a frame, and processing in large quantities after trial assembly;
1.3.11.2 using an outdoor elevator to transport the opening frame fan to each floor designated place;
1.3.11.3 the opening frame is first mounted in place, adjusting the perpendicularity and flatness.
1.3.11.4, the four sides of the opening frame are subjected to glue beating treatment (because a plurality of edges cannot be glued after the opening fan is installed, and no operation space exists);
1.3.11.5 after curing and solidifying the sealant, installing an opening fan;
1.3.11.6 the lever handle and the hinge are mounted on the opening fan in advance, the hinge is opened, the opening fan is slowly pushed to the beam hole to the hinge mounting position, and then the hinge is fixed on the opening frame.
1.3.11.7 adjusting the position of the lock seat so as to be matched with the lock point position, and enabling the opening fan to be normally opened and closed.
1.3.12 seal
1.3.12.1 cleaning and drying the sealing part, namely cleaning the surface of the part to be sealed by using dimethylbenzene, cleaning dust and dirt on the surface, particularly taking care of avoiding solution from being emitted to places other than joints during cleaning, and replacing the cleaned gauze frequently after the cleaning gauze is soiled so as to ensure the cleaning effect, and finally testing the trace of the cleaned gauze after solvent evaporation, and keeping the sealing surface dry;
1.3.12.2 Patch of protective paper tape: in order to pollute the decorative surface when the sealing material is used and make the sealing glue seam and the boundary line straight, a paper tape should be attached, and the paper tape should be noted to be straight;
1.3.12.3 glue injection: the glue injection is uniform, compact and full, and meanwhile, the glue applying method is noted, so that waste is avoided;
1.3.12.4 trimming the glue line: after the glue is injected, the glue joint is forced to be pressed by a small shovel along the glue injection direction, redundant glue is scraped off, and the glue joint is scraped into a designed shape, so that the glue joint is smooth and fluent;
1.3.12.5 removal paper tape: after finishing the glue line, the protective tape should be removed in time, and the torn tape should not pollute the glass surface or the aluminum plate surface; and cleaning glue marks stuck on the construction surface in time.
1.3.12.6 glass and aluminum surfaces are clean.
The foregoing is merely a specific guiding embodiment of the present invention, but the design concept of the present invention is not limited thereto, and any insubstantial modification of the present invention by using the concept should be construed as infringement of the protection scope of the present invention.
Claims (8)
1. The construction method of the semi-hidden frame glass curtain wall of the large building is characterized by comprising the following steps of:
step one, measuring and paying off;
1.1 Rechecking the correctness of the elevation line of the civil structure:
the method comprises the steps of taking a given elevation and an axis of a civil engineering as references, checking the accuracy of the elevation of the civil engineering at intervals of 2-3 layers by using a level gauge, a laser theodolite, a 50-meter long tape and a plumb with proper weight, and checking the accuracy of the reference axis at the same time; if the civil engineering elevation is found to be inaccurate, marking is additionally carried out, a mark special for a curtain wall is needed, and the rechecking condition is reported to a total package unit and supervision;
when the elevation rechecking is carried out, the condition that the elevation of the main skirt building is different due to the settlement of the building body is paid attention to, and the consistency of the elevation of the main skirt building is ensured;
1.2 Determining a datum layer for curtain wall construction measurement paying-off
Each floor plane change layer is determined to be a reference layer, and the number of the reference layer interval layers is not more than 2;
1.3 Rechecking the closing condition of the reference layer civil engineering reference point and line
Rechecking the angle and the distance of a civil engineering datum point and a line by using a theodolite and a 50-meter long reel, if deviation is found, carrying out uniform deviation treatment, and recording the influence of temperature and pull rule strength on a measurement result when the measurement is carried out, and correcting; when the deviation between the measurement result and the design result is found to be larger than a preset threshold value, reporting the total package and the supervision company to perform joint measurement and deviation correction;
1.4 Based on the rechecked datum point or datum line, making an auxiliary measuring line required by the construction of the adapter;
1.5 Checking the edge size of the structure according to the correct control line and the main structure diagram, if the out-of-tolerance phenomenon is found, reporting the total package in time for chiseling so as not to influence the installation progress of the plate;
1.6 Measurement of civil structure:
carrying out retest work according to the axis and elevation provided by civil engineering;
1.7 Height, levelness, plumb line measurement:
measuring the flatness of the peripheral edge of each floor by using a leveling instrument from +/-0.000 as a reference, measuring the transverse levelness and the longitudinal levelness of each adapter by using a leveling ruler and a leveling instrument, layering and fixing a 50M steel tape with 20kg weight at the outer elevation of the floor, measuring respectively by using an equal-height method after standing, calculating the actual elevation of each floor and the actual total height of a building structure, recording the height mark at the same position of a column or a shear wall by using paint, protecting the height mark from being destroyed before the curtain wall is installed, and measuring the elevation error: the total elevation is less than or equal to +/-3 mm and less than or equal to +/-20 mm; placing plumb lines at the positions of the reference axes by using a plumb instrument in the plumb direction, measuring the in-out errors of the floor slab, and determining control lines;
1.8 Contour line measurement):
after a reference control layer is determined according to the relation between each axis of a building structure and the outer diameter size calibrated by a design drawing, a rectangular reference point control network for controlling the same vertical plane of a curtain wall unit and the distance of a connecting line of the rectangular reference point control network are respectively determined by a horizontal dial and a vertical dial of a theodolite, the vertical error between the reference points is controlled in a projection range with the diameter of 5mm, and the direct distance error of the connecting line of the reference points is not more than 3mm; measuring and marking the outline of the structure by taking a rectangular reference control network as a basis; if the data difference between the measurement result and the data provided by civil engineering is greater than a preset threshold, a renovation opinion is provided, and after the renovation, the measurement is carried out again before curtain wall construction until the data difference is not greater than the preset threshold;
1.9 Dividing and positioning pay-off work of each curtain wall variety on site, wherein the positioning is used for providing an installation standard for construction installation personnel so as to ensure the quality of product installation in the construction process; the curtain wall is installed from bottom to top, and vertical grid lines are arranged according to vertical grid dividing surfaces and in-out control points;
step two, checking and installing embedded parts;
step three, pre-assembling the transverse and vertical keels;
step four, installing galvanized connectors;
step five, installing a vertical main keel and a horizontal secondary keel;
step six, constructing heat preservation nodes;
step seven, constructing fireproof nodes;
step eight, concealing and checking acceptance;
step nine, installing a glass plate;
step ten, installing an opening fan;
step eleven, sealing;
and step twelve, completion acceptance.
2. The method for constructing the semi-hidden frame glass curtain wall of the large building according to claim 1, wherein the second step comprises the following steps: and (3) checking the installation position of the embedded fastener, and if the installation position exceeds the deviation requirement, adopting a steel plate with the same thickness as the embedded fastener and the same material, wherein one end of the steel plate is welded with the embedded fastener in a peripheral welding mode.
3. The method for constructing a semi-hidden frame glass curtain wall of a large building according to claim 1, wherein the fourth step comprises the steps of:
4.1 Processing the connecting piece according to the design drawing, and carrying out hot galvanizing treatment on the surface;
4.2 Checking and adjusting paying-off results according to the drawing;
4.3 Welding and fixing the connecting piece on the pre-buried fastening piece; during welding, welding should be symmetrically performed;
4.4 If a gap of more than 1mm is found between the bottom plane of the connecting piece and the embedded fastener, a backing plate is required to be additionally arranged.
4. The method for constructing a semi-hidden frame glass curtain wall of a large building according to claim 1, wherein the fifth step comprises the following steps:
5.1 Connecting pieces at the upper end and the lower end of the vertical main keel are aligned with bolt holes of the embedded fasteners and are preliminarily fixed by bolts; an anti-corrosion insulating plate with the thickness of 1mm is arranged between the vertical main keel and the connecting piece;
5.2 The main joist position is adjusted, the upper and lower positions are verified with the floor elevation line, the left and right positions correspond to the axis sizes of the two sides, and after the main joist size is calibrated, the bolts are screwed by using a spanner; core tubes are added between each two layers of main keels for butt joint so as to meet the requirement of interlayer deformation;
5.3 After the main joists are assembled to the top layer in a layered and aligned mode from bottom to top, checking the perpendicularity, and fastening bolts after the correctness is determined;
5.4 Cleaning welding slag, polishing to be smooth, and brushing two rust-proof paints on the welding seam part;
5.5 After the main keel is installed, the connecting piece is penetrated on the transverse keel in advance, the transverse keel is installed at a designated position, the connecting piece is installed by 2 bolts at the perforated position of the profile, and the bolts are screwed after the adjustment is correct.
5. The method for constructing a semi-hidden frame glass curtain wall of a large building according to claim 1, wherein the sixth step comprises the steps of:
fixing a 100-thickness hydrophobic rock wool plate by using a plastic expansion screw, wherein the heat conductivity coefficient of the plastic expansion screw is less than or equal to 0.040W/MK; and then the fluorocarbon spraying surface of the aluminum plate faces outwards, and the aluminum plate is fixed on an aluminum keel by using self-tapping nails, wherein the fixed point of each side of the aluminum plate is not less than 2.
6. The method for constructing a semi-hidden frame glass curtain wall of a large building according to claim 1, wherein the seventh step comprises the steps of: and a galvanized steel sheet with the thickness of 1.5mm is arranged at the installation position of the fireproof node, one end of the galvanized steel sheet is connected with the curtain wall beam, the other end of the galvanized steel sheet is connected with the building structure, after the galvanized steel sheet is fixed, 200mm thick fireproof rock wool is filled, a continuous fireproof isolation layer between layers is formed, and then the upper cover plate is fixed.
7. The method for constructing a semi-hidden frame glass curtain wall of a large building according to claim 1, wherein the step nine comprises the steps of:
9.1 Transporting qualified glass plates to the site;
9.2 Transporting the glass to each floor designated place by using vertical transport equipment; glass installation is carried out from top to bottom;
9.3 When the glass is coated glass, the coated sheet faces outdoors and the non-coated sheet faces indoors during installation, and the glass label is removed by an art designer;
9.4 Cleaning the periphery of the inner side of the transverse keel frame and the inner side of the vertical keel frame, and installing embedded clamping strips and sealing strips in the frame; the rubber strips around the glass are selected according to the specified model, are inlaid and leveled, the length of the rubber strips is 1.5-2% longer than that of the groove openings in the frame, the fractures are left at four corners, the inclined surfaces are cut off and then spliced into a preset design angle, and the rubber strips are embedded into the grooves after being firmly bonded;
9.5 Drilling and threading on the upper and lower cross beams and the upright posts of each piece of exposed frame glass in advance;
9.6 2 pieces of glass cushion blocks are arranged below the glass plates on the lower cross beam of each piece of glass according to the design position of the drawing;
9.7 Manually placing the glass on the glass cushion block, standing the glass to cling to the aluminum alloy keel frame, so that four sides of the glass are uniformly framed, gaps are uniform, and the plate surface is flat;
9.8 Mounting the glass plate in place, and after the adjustment of the upper, lower, left and right is finished, using an aluminum alloy pressing plate to place the glass on the glass so as to prevent the glass from sliding out, wherein the aluminum alloy pressing plate is not arranged in a full length mode;
9.9 The pressing plate is fixed with the aluminum keel by a stainless steel screw;
9.10 After the glass is installed, uniformly fixing the aluminum alloy outer buckle cover on the aluminum alloy pressing plate, and fixing the aluminum alloy outer buckle cover by using stainless steel screws, wherein the vertical lines of the outer buckle cover are vertical to form a line.
8. The method for constructing a semi-hidden frame glass curtain wall of a large building according to claim 1, wherein the step ten comprises the steps of:
10.1 Before the opening of the fans is processed in a large scale, a complete opening of the fans is processed, and the fans are processed in a large scale after trial assembly;
10.2 Using outdoor elevator to transport the opening frame fan to each floor appointed place;
10.3 Firstly, the opening frame is installed in place, and the verticality and the flatness are adjusted;
10.4 Performing glue spraying treatment on four sides of the opening frame;
10.5 After curing and solidifying the sealant, installing an opening fan;
10.6 The lever handle and the hinge are arranged on the opening fan in advance, the hinge is opened, the opening fan is slowly pushed to the beam hole to the hinge installation position, and then the hinge is fixed on the opening frame;
10.7 The position of the lock seat is adjusted so as to be matched with the lock point position, so that the opening fan is normally opened and closed.
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| CN114776034A (en) * | 2022-05-30 | 2022-07-22 | 北京城建集团有限责任公司 | Glass curtain wall mounting construction process |
| CN115434465A (en) * | 2022-10-14 | 2022-12-06 | 安徽新基建有限公司 | Glass curtain wall mounting construction method |
| CN117803116B (en) * | 2024-02-29 | 2024-05-07 | 山东铭城环保新材料科技有限公司 | Assembled curtain wall structure and construction method thereof |
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