CN110552450A - Construction method of large-span short-vertical-edge vertical double-lock-edge titanium-zinc alloy metal roof - Google Patents
Construction method of large-span short-vertical-edge vertical double-lock-edge titanium-zinc alloy metal roof Download PDFInfo
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- CN110552450A CN110552450A CN201910534545.3A CN201910534545A CN110552450A CN 110552450 A CN110552450 A CN 110552450A CN 201910534545 A CN201910534545 A CN 201910534545A CN 110552450 A CN110552450 A CN 110552450A
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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
- E04B7/00—Roofs; Roof construction with regard to insulation
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D11/00—Roof covering, as far as not restricted to features covered by only one of groups E04D1/00 - E04D9/00; Roof covering in ways not provided for by groups E04D1/00 - E04D9/00, e.g. built-up roofs, elevated load-supporting roof coverings
- E04D11/02—Build-up roofs, i.e. consisting of two or more layers bonded together in situ, at least one of the layers being of watertight composition
Abstract
The invention discloses a construction method of a large-span short-vertical-edge upright double-serging titanium-zinc alloy metal roof, which comprises the following steps: installation of a main body steel structure → installation of main and secondary purlines → installation of YX-16-900 type galvanized profiled steel sheets → installation of rock wool heat insulation plates → VP-125 type galvanized profiled steel sheets → leveling layer of the galvanized steel sheets → a fastener support special for stainless steel → self-adhesive rubber asphalt waterproof coiled material → a titanium zinc alloy roof panel. The short vertical edge upright double-serging titanium-zinc alloy metal roof system only limits the movement of the roof panel in the width direction and the vertical direction of the panel and does not limit the displacement of the roof panel along the length direction of the panel due to the adoption of an upright serging mode. Therefore, the roof panel can freely slide and stretch on the stainless steel fastener when the temperature changes, temperature stress cannot be generated, the problem of temperature deformation which is difficult to overcome by other panel types is effectively solved, and the reliability of the roof performance is ensured.
Description
Technical Field
The invention belongs to the field of building construction, and particularly relates to a construction method of a large-span short-vertical-edge upright double-lockrand titanium-zinc alloy metal roof.
background
The short-vertical-edge upright double-lockrand titanium-zinc alloy metal roof is a new roof building material in the modern building industry, and the short-vertical-edge upright lockrand system is characterized in that the vertical edges of two plates are meshed along the length direction of a plate strip by using professional vertical edges and meshing equipment, so that the roof or the wall surface are connected into a whole, the system does not need to be glued, and particularly, the double-lockrand mode is tightly meshed, so that the roof is 100% structurally waterproof. The system can save a lot of installation time, and particularly provides a method for effectively reducing the cost for roofs or wall surfaces with large areas. The height of the vertical edge of the short vertical edge vertical overlock system is 25mm, so that the building has the appearance of rhythm and modern sense. The titanium-zinc alloy is a high-grade metal alloy plate, the service life of the titanium-zinc alloy reaches 70-100 years, the maintenance cost is low, the titanium-zinc alloy can be perfectly combined with various materials such as glass, stone and the like, the titanium-zinc alloy accords with the sustainable development concept, the titanium-zinc alloy is rapidly developed and applied to public buildings such as culture centers, stadiums, exhibition centers, airports and the like in recent years, the titanium-zinc alloy has the tendency of increasing year by year, and good effects are obtained.
In some countries in Europe and America represented by the United states and developed countries in Asia such as Japan and Korea, the application field of building construction can be continuously expanded by fully utilizing the characteristics of short vertical edge upright double-lockrand titanium-zinc alloy metal roofs, and the quality and the overall impression of engineering construction are improved. With the successive emergence of the national energy-saving and emission-reducing policy and the construction of large-scale stadiums in recent years, the application range of the short-standing-edge upright double-lockrand titanium-zinc alloy metal roof system in the domestic building field is expanded, the short-standing-edge upright double-lockrand titanium-zinc alloy metal roof is rapidly developed and applied in the national building industry, the trend of increasing year by year is achieved, and good effects are achieved.
Disclosure of Invention
the purpose of the invention is as follows: in order to overcome the defects of the prior art, the invention provides a construction method of a large-span short-vertical-edge upright double-lockrand titanium-zinc alloy metal roof.
The technical scheme is as follows: a construction method of a large-span short-standing-edge upright double-serging titanium-zinc alloy metal roof comprises the following steps: installing a main steel structure → installing a main purline and a secondary purline → installing a YX-16-900 type galvanized profiled steel sheet → installing a rock wool heat insulation board → installing a VP-125 type galvanized profiled steel sheet → leveling layer of the galvanized steel sheet → a fastener support special for stainless steel → a self-adhesive rubber asphalt waterproof coiled material → a titanium zinc alloy roof panel; wherein:
The primary purline and the secondary purline are installed:
The main purline is installed by directly welding a main steel structure, a bolt connecting ball can be welded on a bolt ball joint through a support bracket, and the purline is welded with the support; the secondary purline is arranged on the main purline and forms an angle of 90 degrees with the main purline;
(1) And the installation process comprises the following steps: material processing preparation → centralized hoisting → construction platform → transportation → measurement positioning → welding installation → adjustment → acceptance;
(2) fixing the secondary purline: the secondary purlines are arranged on the upper surfaces of the main purlines and are perpendicular to the main purlines, the distance between the secondary purlines and the main purlines is 1500mm, and the secondary purlines and the main purlines are welded and fixed. After the purlines are hoisted in place, spot welding is temporarily fixed, welding troubles are carried out when the top surfaces of the purlines which are being installed are level with the top surfaces of the adjacent installed purlines or the height difference of the top surfaces of the adjacent purlines is within 2mm, the purlines are not flat, the purlines are fixed by welding after adjustment, and the top surfaces of the adjacent purlines are adjusted to be consistent as much as possible during installation;
the titanium-zinc alloy metal roof panel is installed:
Before the panel is installed, the installation quality of the panel bracket is checked again to ensure that the panel installation requirement is met and then the panel is installed;
(1) Paying-off wire
after the panel bracket is checked, a panel mounting positioning line can be placed under the condition that the mounting quality is strictly controlled, and the distance of the panel from a gutter is generally taken as a control line; the principle of determining the length of the panel from the gutter is 1/1000+ the length of the downward bend is 15mm + the width of the drip piece is 30mm + the size allowance C, wherein C is 25mm when the panel is installed in summer, and is 15mm but not less than 100mm when the panel is constructed in winter;
(2) processing and transporting titanium-zinc alloy metal plate
The on-site profiling equipment is a special titanium-zinc alloy plate press, a titanium-zinc plate is butted with processing equipment, a wrapped block can be directly transported and laid after being processed and formed, and the plate is processed and installed simultaneously, so that the engineering progress can be accelerated, and the stacking site of materials is reduced; a roll shaft support is arranged in the plate discharging direction of the roof plate forming machine, and when the length of the produced roof titanium zinc plate reaches the designed plate length, the pressing plate is stopped and cutting is carried out; the length of the panel is slightly longer than the design by 100mm, so that the panel end can be conveniently cut and adjusted;
The maximum span of the engineering panel is 35m, the roof panel is more than or equal to 30m, and two 50-ton truck cranes are arranged for double-crane hoisting in a vertical transportation plan of the roof panel during installation; before hoisting, fixing the alloy plate and the I-shaped steel carrying pole beam together by using a hoisting belt; the roof is lifted and transported manually, and in order to protect the plate lifting personnel from being scratched, the plate bottom is supported by an adhesive tape for transportation; in order to ensure the quality of the roof panel, the machining size of the roof panel needs to be strictly checked, and the machining length tolerance of the titanium-zinc plate is as follows: the processing length L is less than or equal to 3m, and the allowable error range is-5 to +10 mm; the processing length L is more than 3m, and the allowable error range is-5 to +20 mm;
(3) In position
A constructor lifts the plate to the mounting position, firstly checks whether the small edge of the previous plate is completely buckled into the fixed seat, puts the plate in place after no mistake is made, firstly controls a plate end control line when the plate is in place, and then forcibly presses the lapping edge into the lapping edge of the previous plate; checking whether the overlapping edges can be tightly jointed or not, if the overlapping edges cannot be tightly jointed, finding out a problem and processing the problem as early as possible;
(4) Locking edge
After the panel position is adjusted, the foam plastic seal strip under the end panel is installed, and then the overlocking is carried out. The overlock is required to be continuous and flat when in overlock, and no distortion or crack can occur; in the advancing process of the overlock machine, the overlap edge is tightly jointed by force within 1m in front of the overlock machine; the quality key of the overlock is that whether the overlap edge is tightly jointed by strong force or not in the overlock process; the panel in place on the same day must be subjected to edge locking, so that the panel cannot be blown or scraped away at night; the diameter of the lockrand is 21 plus or minus 1mm, and is generally 21 mm;
(5) Cornice drip sheet mounting
trimming the board edges at the cornice and the gutter before installing the drip pieces, popping up trimming lines at the parts needing to be trimmed according to the design size of the parts of the board edges needing to extend into the gutter and the like, and cutting along the trimming lines by using an automatic edge trimmer during trimming, thereby ensuring that the length of the roof board extending into the gutter is consistent with the design size and the appearance of the whole roof is attractive after trimming; meanwhile, rainwater can be effectively prevented from blowing into the roof interlayer under the action of wind; then installing a cornice sealing element, and finally installing a water dropping sheet which is fixed by rivets, wherein each small rib is provided with one steel rivet; when the drip pieces are installed, it should be noted that if the lengths of the plates are different, the drip pieces must be disconnected to allow the plates to be stretched differently, leaving a 5mm gap between the drip pieces;
(6) Glue applying
The gluing refers to a sealant at the joint of the roof panel and the upper manhole and a sealant between the roof flashing panel and the joint; cleaning dust and other dirt and moisture on the interface part flashing before gluing, pasting adhesive tapes at proper positions on two sides of an area to be glued, scraping the glue once by using a round-head object with a proper diameter after the glue is completely glued at a position with an included angle, enabling the glue to be more uniform, compact and attractive, and finally tearing off the adhesive tapes;
(7) wind-resistant clamp made of large-span titanium-zinc alloy upright overlocking alloy plate and integral reinforcing treatment of through long rod
In order to ensure that the wind resistance of the roof panel is increased, the wind-resistant clamp and the through long rod can be designed according to different geographic positions, the wind-receiving direction and the wind-receiving size of the roof, so that the wind resistance of the whole roof panel is increased once; the wind-resistant clamp and the titanium-zinc alloy short vertical edge upright double-lock-edge alloy plate are fixed by adopting a screw for fastening and fixing, so that rib plates of the alloy plate do not need to be damaged, the appearance of panel pores is reduced, and the waterproof effect of a roof is facilitated;
(8) Roof panel installation quality control measure
after the roof panel ribs are buckled into the fixed seats, after the buckling is finished, each fixed seat is checked to see whether the panel ribs are completely buckled or not, and if the panel ribs are not buckled, the panel ribs are buckled again; after the plate ribs are completely buckled, the next plate is installed, after a plurality of plates are installed, the manual plate clamping device is used for pre-locking, the position of the fixed seat is pre-locked to ensure that the upper end of the fixed seat is buckled into the plate ribs, if the fixed seat is pre-clamped, the installation precision of the fixed seat is not enough, the plate ribs are not buckled when the fixed seat is not locked or the installation position of the fixed seat is lower, and the plate ribs need to be adjusted in time, so that the plate ribs are prevented from bursting or locking empty after electric locking;
After manual overlock is finished, when electric overlock is carried out, an overlock operator carries a rubber hammer along with the hand, a plate rib, particularly a fixed seat part, is knocked in front of the electric overlock machine, so that the fixing effect of the plate is rechecked, and if the fixed seat is not well buckled, the electric overlock machine needs to be stopped and adjusted again; when serging, a serging person needs to use a pedal to locate the plate rib in front of the serging machine.
as an optimization: the installation of the galvanized profiled steel sheet comprises the following steps: after the elevation of the steel structure purline and each key part which are installed on the construction working face is retested, the installation construction of the galvanized profiled steel sheet is carried out, the material of the ceiling layer is a YX-16-900 type galvanized profiled steel sheet with the thickness of 0.5mm, and the material of the supporting layer is a VP-125 type galvanized profiled steel sheet with the thickness of 0.6 mm; firstly constructing a suspended ceiling YX-16-900 type galvanized profiled steel sheet, then installing a rock wool heat-insulating board with the thickness of 80mm after the construction is finished, and constructing a support layer VP-125 type galvanized profiled steel sheet after the heat insulation is finished; the profiled steel sheet is fixed on the secondary purline by the clamping piece fixing screw, the self-tapping screw must be driven to the trough position, the bottom plate joint must be arranged on the collar, the lap length must not be less than 100mm, and the bottom plate must not be polluted, bent or warped.
as an optimization: the stainless steel special fastener support is installed: after the supporting layer is finished, leveling by using a galvanized steel plate with the thickness of 0.8mm, after leveling, guiding the axis in the east-west direction of construction to the galvanized steel plate with the thickness of 0.8m by using a theodolite to serve as the positioning basis of the stainless steel special fastener support, strictly constructing the stainless steel special fastener support according to the design drawing, and fixing by using a fixing rivet after the position of the stainless steel special fastener is determined; the key point of the installation of the stainless steel support is to ensure that the support is on a straight line, and if the support is found to have larger deviation, the support must be corrected before the roof panel is installed.
As an optimization: the roof panel: the titanium-zinc alloy roof board with the thickness of 0.7mm and the height of ribs of 25mm is adopted, the standard board width adopts 430mm according to the main structure arrangement and the self characteristics of the board, and the panel is fixed on the stainless steel fixing seat through the vertical overlocking.
As an optimization: the leveling layer comprises the following components: the galvanized steel flat plate with the thickness of 0.8mm is fixed on the supporting layer by a rivet.
as an optimization: the supporting layer is as follows: YX-35-750 type galvanized profiled steel sheet with the thickness of 0.6mm is adopted, and self-tapping and self-drilling screws are adopted to be fixed on the steel keel.
as an optimization: and (4) leakage prevention: the vertical overlock fixing mode is adopted, so that the drainage section is large; the on-site profiling is adopted, the panels are not overlapped longitudinally, and no screws penetrate through the surfaces, so that the anti-seepage performance is good.
As an optimization: temperature deformability: the vertical edge locking mode is adopted, the stainless steel fastener only limits the movement of the roof panel in the width direction and the vertical direction of the panel, and does not limit the displacement of the roof panel along the length direction of the panel. Therefore, the roof panel can freely slide and stretch on the stainless steel fastener when the temperature changes.
Has the advantages that: the short vertical edge upright double-serging titanium-zinc alloy metal roof system adopts an upright serging mode, and the stainless steel fastener only limits the movement of the roof panel in the width direction and the vertical direction of the panel and does not limit the displacement of the roof panel along the length direction of the panel. Therefore, the roof panel can freely slide and stretch on the stainless steel fastener when the temperature changes, temperature stress cannot be generated, the problem of temperature deformation which is difficult to overcome by other panel types is effectively solved, and the reliability of the roof performance is ensured.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below so that those skilled in the art can better understand the advantages and features of the present invention, and thus the scope of the present invention will be more clearly defined. The embodiments described herein are only a few embodiments of the present invention, rather than all embodiments, and all other embodiments that can be derived by one of ordinary skill in the art without inventive faculty based on the embodiments described herein are intended to fall within the scope of the present invention.
Examples
1. brief description of the embodiments
1.1 overview of large-span short-standing-edge upright double-lock-edge titanium-zinc alloy roof
the roof of the embodiment comprises a titanium-zinc alloy metal roof, a glass roof, an aluminum single-plate roof, a perforated aluminum plate roof, a concrete roof and the like, and has the advantages of different elevations of the roofs, complex shape, complex overall structure system, novel and attractive appearance, wherein two roofs of a theater hall and a stage roof are titanium-zinc alloy roofs, the elevation of the roof structure of the theater hall is 23.00m, a double-sided slope is 2% in gradient, about 35m in maximum span and about 1130m in area, the elevation of the stage roof of the theater is 31.301-39.500 m in diagonal single-sided slope, about 30m in maximum span and about 1110m 2 in area.
the total area of the titanium-zinc alloy roof is about 2240m 2, the shape is complex, the span is large, and the roof system is a short vertical edge upright double-locking system.
2. Short vertical-edge upright double-lockrand titanium-zinc alloy roof system
2.1 general overview of roofing System design
1. The roof plate is a 25-430 titanium-zinc alloy roof plate with the thickness of 0.7 mm.
2. Fixing layer: stainless steel fastener.
3. Leveling layer: 0.8mm thick galvanized steel sheet.
4. Waterproof layer: 3mm self-adhesive rubber asphalt waterproof coiled material.
5. A support layer: VP-125 type galvanized profiled steel sheet with thickness of 0.6 mm.
6. Insulating layer: rock wool heat preservation board with thickness of 80mm (60 k).
7. Secondary purlins: 120 × 60 × 3 galvanized steel square pipe.
8. Hoisting a top layer: YX-16-900 type galvanized profiled steel sheet with a thickness of 0.5 mm.
2.2 Material and System features
The titanium-zinc plate is a high-grade metal alloy plate manufactured according to european standard EN 988. The alloy material comprises 99.995% pure zinc and a small amount of copper (0.08%) titanium (0.06%), is selected by architects all over the world due to the outstanding advantages of durability, reliability and the like, and is particularly suitable for roofs of public buildings (especially sign buildings) such as airports, convention and exhibition centers, cultural centers, stadiums, high-class houses and high-class office buildings. The titanium zinc plate has the characteristics that:
1. Extremely long service life: the titanium zinc plate can be used for 70 to 100 years according to different environments.
2. Low maintenance: the passivation layer and the plate are integrated, do not peel off and fall off, and can repair surface scratches by self.
3. Abundant expressive force: can be perfectly combined with various materials such as wood, glass, stone and the like.
4. Excellent ductility: can realize various architectural appearances (such as curved surfaces, cambered surfaces, spherical surfaces and the like).
5. a multiplicity of mounting systems.
6. An environment-friendly material: is a green material and accords with the sustainable development concept.
titanium zinc board installing the system: short vertical double-serging system.
the short standing double lockrand system is a traditional titanium zinc plate mounting system, which is also called a standing occlusion system, a short standing system (to distinguish from a 65mm high standing system of aluminum magnesium manganese plates), a standing occlusion system, and the like. Features of the standing-seam system:
1. continuous support system
2. Various forms of roofing and wall surfaces: planar, curved, spherical, hyperboloid, and the like;
3. The applicable conditions are as follows: the slope of the roof is more than 3 degrees;
4. The height of the vertical edge is 25 mm;
5. 100% structural waterproofing;
6. Titanium zinc plate with the material of 0.7mm or 0.8 mm;
7. Maximum plate length: the roof can reach 15 meters, and the wall surface can reach 4 meters;
The standing-seam crimping system is used to join together the roof or wall surfaces by using professional standing edges and a crimping device to crimp the standing edges of the two panels along the length of the panels. The system does not need to be glued, and particularly, the double-lock-edge mode is tight in occlusion and 100% structural waterproof.
The system can save a lot of installation time, and particularly provides a method for effectively reducing the cost for roofs or wall surfaces with large areas. In addition, the vertical serging system is also very suitable for the severe weather environment, such as the places with strong wind, rain and snow. The vertical edge height of the vertical serging system is 25mm, so that the building presents an appearance with rhythmic feeling and modern feeling.
2.3 roofing System Performance and measures
1. roof boarding: the titanium-zinc alloy roof board with the thickness of 0.7mm and the height of ribs of 25mm is adopted, the standard board width adopts 430mm according to the main structure arrangement and the self characteristics of the board, and the panel is fixed on the stainless steel fixing seat through the vertical overlocking.
2. leveling layer: the galvanized steel flat plate with the thickness of 0.8mm is fixed on the supporting layer by a rivet.
3. A support layer: YX-35-750 type galvanized profiled steel sheet with the thickness of 0.6mm is adopted, and self-tapping and self-drilling screws are adopted to be fixed on the steel keel.
4. And (4) leakage prevention: the vertical overlock fixing mode is adopted, so that the drainage section is large; the on-site profiling is adopted, the panels are not overlapped longitudinally, and no screws penetrate through the surfaces, so that the anti-seepage performance is good.
5. Temperature deformability: the vertical edge locking mode is adopted, the stainless steel fastener only limits the movement of the roof panel in the width direction and the vertical direction of the panel, and does not limit the displacement of the roof panel along the length direction of the panel. Therefore, the roof panel can freely slide and stretch on the stainless steel fastener when the temperature changes.
3. Application of construction technology
3.1 construction and installation Process
Installation of a main body steel structure → installation of main and secondary purlines → installation of YX-16-900 type galvanized profiled steel sheets → installation of rock wool heat insulation plates → VP-125 type galvanized profiled steel sheets → leveling layer of the galvanized steel sheets → a fastener support special for stainless steel → self-adhesive rubber asphalt waterproof coiled material → a titanium zinc alloy roof panel.
3.2 purlin (port 120 x 60 x 3 galvanized steel square tube) installation
The installation of main purlin is through direct welded connection main part steel construction, if meet bolted connection ball accessible support the class welding on the bolt ball node, the purlin adopts welded connection with the support. Inferior purlin is installed on main purlin to become 90 with main purlin, because inferior purlin is the reference surface of roofing system installation as supporting, consequently the installation location requires very high, must pass through accurate measurement in order to guarantee the top surface roughness and the holistic curved surface outward appearance of inferior purlin.
1. The mounting process comprises the following steps: material processing preparation → centralized hoisting → construction platform → transportation → measurement and positioning → welding and installation → adjustment → acceptance.
2. the installation requirement is as follows: the installation requirement of this engineering owner, inferior purlin strictly carries out current steel construction standard, and the installation welding seam of main purlin and inferior purlin satisfies national second grade standard, and the installation cooperates the survey crew to do further inspection to the installation of main purlin simultaneously and verifies, to having the poor main purlin of displacement, the otic placode is in time adjusted.
3. Fixing the secondary purline: the secondary purlines are arranged on the upper surfaces of the main purlines and are perpendicular to the main purlines, the distance between the secondary purlines and the main purlines is 1500mm, and the secondary purlines and the main purlines are welded and fixed. After the purlines are hoisted in place, spot welding is temporarily fixed, the top surfaces of the purlines which are being installed are parallel and level to the top surfaces of the adjacent installed purlines or the height difference of the top surfaces of the adjacent purlines is less than 2mm, welding is carried out when the purlines are checked to be not flat, the purlines are fixed by welding after adjustment, and the top surfaces of the adjacent purlines are adjusted to be consistent as much as possible during installation.
3.3 installation of galvanized profiled sheet
and (3) after the elevation of the steel structure purline and each key part which are installed on the construction working surface is retested, installing and constructing the galvanized profiled steel sheet, wherein the material of the ceiling layer is a YX-16-900 type galvanized profiled steel sheet with the thickness of 0.5mm, and the material of the supporting layer is a VP-125 type galvanized profiled steel sheet with the thickness of 0.6 mm. Firstly constructing a suspended ceiling YX-16-900 type galvanized profiled steel sheet, then installing a rock wool heat-insulating board with the thickness of 80mm after the construction is finished, and constructing a support layer VP-125 type galvanized profiled steel sheet after the heat insulation is finished. The profiled steel sheet is fixed on the secondary purline by fastener fixing screws (phi 5.5 x 25 self-tapping self-drilling screws with waterproof rubber pads) at 250, the self-tapping screws must be driven at the trough positions, the bottom plate joints must be arranged on the collar strips, the overlapping length must not be less than 100mm, and the bottom plate must not be polluted, bent or warped.
3.4 stainless steel special fastener bracket mounting
The supporting layer is leveled by a galvanized steel plate with the thickness of 0.8mm after the completion, after leveling, the axes of the east and west directions of construction are guided to the galvanized steel plate with the thickness of 0.8m by a theodolite to serve as the positioning basis of the special fastener support for the stainless steel, the position and the row number of the special fastener support for the stainless steel are strictly constructed according to the design drawing, the distance is less than or equal to 400mm, and after the position of the special fastener for the stainless steel is determined, the special fastener for the stainless steel is fixed by a fixing rivet. The key point of the installation of the stainless steel support is to ensure that the support is on a straight line, and if the support is found to have larger deviation, the support must be corrected before the roof panel is installed.
3.4 titanium-zinc alloy metal roof boarding installation
The titanium-zinc alloy metal panel mounting process is shown in fig. 1.
Before panel installation, the installation quality of the panel bracket is checked again, and panel installation is carried out again after the panel installation requirement is met.
1. Paying-off device
After the panel bracket is checked, the panel mounting positioning line can be placed under the condition that the mounting quality is strictly controlled, and the distance from the panel to the gutter is generally used as a control line. The length of the panel is determined according to the principle of 1/1000+ 15mm of downward bending length + 30mm of width of the drip sheet + C of size allowance, wherein C is 25mm when being installed in summer and 15mm when being constructed in winter, but is not less than 100 mm.
2. processing and transporting titanium-zinc alloy metal plate
The on-site profiling equipment is adopted as a special titanium-zinc alloy plate press, a titanium-zinc plate block is butted with processing equipment, the wrapped block can be directly transported and laid after being processed and formed, and the plate block is processed and installed simultaneously, so that the engineering progress can be accelerated, and the stacking site of materials is reduced. And a roll shaft support is arranged in the plate outlet direction of the roof plate forming machine, and when the length of the produced roof titanium zinc plate reaches the designed plate length, the pressing plate is stopped and cutting is carried out. The length of the panel is preferably slightly longer than the design by 100mm, so that the panel end can be conveniently cut and adjusted.
The maximum span of the engineering panel is 35m, the roof panel is more than or equal to 30m, and two 50-ton truck cranes are arranged for double-crane hoisting in a vertical transportation plan of the roof panel during installation. Before hoisting, the alloy plate and the I-shaped steel carrying pole beam are fixed together by a hoisting belt. The designed position of the hoisting roof is lifted and transported manually, and in order to protect the plate lifting personnel from being scratched, the plate bottom needs to be supported by an adhesive tape for transportation. In order to ensure the quality of the roof panel, the machining size of the roof panel needs to be strictly checked, and the allowable error of the machining length of the titanium-zinc plate is detailed in table 1.
TABLE 1 allowable deviation table for processing length of Ti-Zn plate
3. In position
The constructor lifts the plate to the mounting position, firstly checks whether the small edge of the previous plate is completely buckled into the fixed seat, then the small edge is in place after the small edge is not wrong, firstly controls the plate end control line when the small edge is in place, and then forcibly presses the lap edge into the lap edge of the previous plate. The overlapping edges are checked for tight engagement, if not, problems should be identified and dealt with early.
4. Serging
After the panel position is adjusted, the foam plastic seal strip under the end panel is installed, and then the overlocking is carried out. The overlock is required to be continuous and flat without distortion and cracks. During the advance of the serging machine, the overlapped edges are tightly jointed by force within 1m of the front of the serging machine. For the present engineering, the quality of the lockstitching is critical to whether the clinch is tightly joined with a strong force during the lockstitching process. The panels in place on the day must be finished with lockstitching to ensure that the panels are not blown or scraped away at night. The diameter of the lock edge is 21 +/-1 mm, and is generally 21 mm.
5. cornice drip sheet installation
Before the drip sheet is installed, the edge of the board at the cornice and the gutter is trimmed, trimming lines are popped up at the positions needing trimming according to the design size of the positions of the board edges needing to extend into the gutter and the like, an automatic edge trimmer is used for cutting along the trimming lines during trimming, the length of the roof board extending into the gutter is ensured to be consistent with the design size, and the appearance of the whole roof is ensured to be attractive after trimming. Meanwhile, rainwater can be effectively prevented from blowing into the roof interlayer under the action of wind. Then installing a cornice sealing element, and finally installing a water dropping sheet, wherein the water dropping sheet is fixed by rivets, and one steel rivet is arranged on each small rib. It should be noted that if the panels are of different lengths, the drip sheet must be broken to allow the panels to flex differently, leaving a 5mm gap between the drip sheets.
6. Glue applying device
The term gluing here refers to the sealing glue at the interface between the roof panel and the upper manhole and the sealing glue between the panels at the joint of the roof flashing panel. Before gluing, cleaning dust and other dirt and moisture on the interface part flashing, pasting adhesive tapes on the appropriate positions of the two sides of the area to be glued, and scraping the glue once by using a round-head object with a proper diameter after the glue is completely glued at the position with an included angle, so that the glue becomes more uniform, compact and attractive. Finally, the adhesive tape is torn off.
7. wind-resistant clamp made of large-span titanium-zinc alloy upright overlocking alloy plate and integral reinforcing treatment of through long rod
In order to ensure that the wind resistance of the roof panel is increased, the wind-resistant clamp and the through long rod can be designed according to different geographic positions, the wind-receiving direction and the wind-receiving size of the roof, and the wind resistance of the whole roof panel is increased once. The wind-resistant clamp and the titanium-zinc alloy short vertical edge upright double-lock edge alloy plate are fixed by adopting screw fastening, the ribbed plate of the alloy plate is not required to be damaged, the appearance of the pores of the panel is reduced, and the waterproof effect of the roof is facilitated.
8. roof panel installation quality control measure
After the roof panel rib is buckled into the fixing seats, after the buckling is finished, each fixing seat is checked to see whether the panel rib is completely buckled or not, and if the panel rib is not buckled, the panel rib is buckled again. The next board of installation after the complete lock is good, several backs of installation, carry out the preliminary serging with manual splint ware, mainly carry out the preliminary locking to fixing base department and guarantee that the last support of fixing base is accomplished and is detained the board rib, if when pressing from both sides in advance, fixing base installation accuracy is not enough, and the lock is not gone up or the lower lock of fixing base mounted position is gone into the board rib and just needs in time to adjust, prevents that electronic serging back board rib from bursting or locking empty.
After the manual serging is finished, when the electric serging is carried out, a serging operator carries a rubber hammer along with the manual operation, the plate rib, particularly the fixed seat part, is knocked in front of the electric serging machine, so that the fixed effect of the plate is rechecked, and if the fixed seat is not well buckled, the electric serging machine needs to be stopped and adjusted again. When serging, a serging person needs to use a pedal to locate the plate rib in front of the serging machine.
At present, the production, design and installation technology of the short vertical double-lockrand titanium-zinc alloy roof system is mature, and the waterproof, integral safe hoisting and safe use of the roof are mainly controlled. The vertical overlocking technology avoids damaging a metal roof panel, ensures that the whole roof panel has no pores, has obvious waterproof effect, and increases the stability of the whole roof system by arranging the wind-resistant clamp and the through long rod. The hoisting of the large-span titanium-zinc alloy metal roof construction site avoids the bending and transportation loss and inconvenience of alloy plates, the system is flexible, quick, accurate and economical to install, can save a lot of installation time, and provides an effective cost reduction method particularly for roofs or wall surfaces with large areas.
In addition, the vertical serging system is also very suitable for the severe weather environment, such as the places with strong wind, rain and snow. The height of the vertical edge of the short vertical edge vertical double-serging system is 25mm, so that the building has the appearance of rhythm and modern sense.
The titanium-zinc alloy metal roof in the embodiment adopts a short vertical edge upright double-locking fixing mode, and the drainage section is large; and (4) performing on-site compression, wherein the panels are longitudinally not overlapped, the surfaces are not penetrated by screws, and finally, the overlapped edges of the roof panels are meshed together by using an electric serging machine. Because the upright lockrand fixing mode is adopted, no bolt is exposed on the roof, no glue is required to be applied, and particularly, the double lockrand mode is tightly occluded, so that 100 percent structural water resistance is realized. The whole roof is attractive and tidy, and the hidden water leakage trouble caused by thousands of screw holes is avoided, so that the anti-leakage performance is good. At present, the project is put into use, and the rain-proof clothes have no rain leakage phenomenon after being washed for more than three years, and have good waterproof performance.
(2) Guarantee the roof construction quality
All metal roof panels have the problem of temperature deformation, the temperature on the roof panels can reach about 45 ℃ in summer, and the temperature on the roof panels is only a few degrees in winter, so that the large temperature difference inevitably causes the roof panels to have large temperature deformation. The metal roof adopts a screw penetrating and fixing mode, the roof panel is limited by screws when expanding with heat and contracting with cold and cannot freely stretch out and draw back, so that the nail hole of the roof panel and the screws have temperature stress, and under the repeated action of the screws, the nail hole of the roof panel is larger and larger, and water leakage occurs.
Because the short vertical edge upright double-lock-edge titanium-zinc alloy metal roof system adopts the upright lock-edge mode, the stainless steel fastener only limits the movement of the roof panel in the width direction and the vertical direction of the panel and does not limit the displacement of the roof panel along the length direction of the panel. Therefore, the roof panel can freely slide and stretch on the stainless steel fastener when the temperature changes, temperature stress cannot be generated, the problem of temperature deformation which is difficult to overcome by other panel types is effectively solved, and the reliability of the roof performance is ensured.
(3) Long service life, green and environmental protection
according to different environments, the titanium-zinc plate can be used for 70 to 100 years, and has extremely long service life; the titanium-zinc alloy metal passivation layer and the plate are integrated, the titanium-zinc alloy metal passivation layer is not peeled off and does not fall off, surface scratches can be self-repaired, maintenance is low in the using process, the titanium-zinc alloy metal roof is an environment-friendly material and is a green material, dry operation is conducted on the site, the improvement of the site civilized construction degree is facilitated, the environmental pollution is reduced, and the sustainable development concept is met.
(4) The overall effect of the roof is excellent
The short-edge upright double-serging system has good edge closing and closing treatment, and streamline edge closing and closing, thereby adding the aesthetic feeling of the appearance of the building and further leading the roof to have the effect of lightness and elegance.
The short vertical double-lock-edge titanium-zinc alloy metal roof system softens the strength of the steel plate, and the corrosion resistance and the decoration of the metal roof plate, and is economical and practical. The roof supports the roof system, can fully guarantee construction load and maintenance load.
Claims (8)
1. A construction method of a large-span short-standing-edge upright double-serging titanium-zinc alloy metal roof is characterized by comprising the following steps: the method comprises the following steps: installing a main steel structure → installing a main purline and a secondary purline → installing a YX-16-900 type galvanized profiled steel sheet → installing a rock wool heat insulation board → installing a VP-125 type galvanized profiled steel sheet → leveling layer of the galvanized steel sheet → a fastener support special for stainless steel → a self-adhesive rubber asphalt waterproof coiled material → a titanium zinc alloy roof panel; wherein:
the primary purline and the secondary purline are installed:
the main purline is installed by directly welding a main steel structure, a bolt connecting ball can be welded on a bolt ball joint through a support bracket, and the purline is welded with the support; the secondary purline is arranged on the main purline and forms an angle of 90 degrees with the main purline;
(1) And the installation process comprises the following steps: material processing preparation → centralized hoisting → construction platform → transportation → measurement positioning → welding installation → adjustment → acceptance;
(2) Fixing the secondary purline: the secondary purlines are arranged on the upper surfaces of the main purlines and are perpendicular to the main purlines, the distance between the secondary purlines and the main purlines is 1500mm, and the secondary purlines and the main purlines are welded and fixed. After the purlines are hoisted in place, spot welding is temporarily fixed, welding troubles are carried out when the top surfaces of the purlines which are being installed are level with the top surfaces of the adjacent installed purlines or the height difference of the top surfaces of the adjacent purlines is within 2mm, the purlines are not flat, the purlines are fixed by welding after adjustment, and the top surfaces of the adjacent purlines are adjusted to be consistent as much as possible during installation;
The titanium-zinc alloy metal roof panel is installed:
Before the panel is installed, the installation quality of the panel bracket is checked again to ensure that the panel installation requirement is met and then the panel is installed;
(1) Paying-off wire
after the panel bracket is checked, a panel mounting positioning line can be placed under the condition that the mounting quality is strictly controlled, and the distance of the panel from a gutter is generally taken as a control line; the principle of determining the length of the panel from the gutter is 1/1000+ the length of the downward bend is 15mm + the width of the drip piece is 30mm + the size allowance C, wherein C is 25mm when the panel is installed in summer, and is 15mm but not less than 100mm when the panel is constructed in winter;
(2) Processing and transporting titanium-zinc alloy metal plate
The on-site profiling equipment is a special titanium-zinc alloy plate press, a titanium-zinc plate is butted with processing equipment, a wrapped block can be directly transported and laid after being processed and formed, and the plate is processed and installed simultaneously, so that the engineering progress can be accelerated, and the stacking site of materials is reduced; a roll shaft support is arranged in the plate discharging direction of the roof plate forming machine, and when the length of the produced roof titanium zinc plate reaches the designed plate length, the pressing plate is stopped and cutting is carried out; the length of the panel is slightly longer than the design by 100mm, so that the panel end can be conveniently cut and adjusted;
The maximum span of the engineering panel is 35m, the roof panel is more than or equal to 30m, and two 50-ton truck cranes are arranged for double-crane hoisting in a vertical transportation plan of the roof panel during installation; before hoisting, fixing the alloy plate and the I-shaped steel carrying pole beam together by using a hoisting belt; the roof is lifted and transported manually, and in order to protect the plate lifting personnel from being scratched, the plate bottom is supported by an adhesive tape for transportation; in order to ensure the quality of the roof panel, the machining size of the roof panel needs to be strictly checked, and the machining length tolerance of the titanium-zinc plate is as follows: the processing length L is less than or equal to 3m, and the allowable error range is-5 to +10 mm; the processing length L is more than 3m, and the allowable error range is-5 to +20 mm;
(3) In position
A constructor lifts the plate to the mounting position, firstly checks whether the small edge of the previous plate is completely buckled into the fixed seat, puts the plate in place after no mistake is made, firstly controls a plate end control line when the plate is in place, and then forcibly presses the lapping edge into the lapping edge of the previous plate; checking whether the overlapping edges can be tightly jointed or not, if the overlapping edges cannot be tightly jointed, finding out a problem and processing the problem as early as possible;
(4) locking edge
After the panel position is adjusted, the foam plastic seal strip under the end panel is installed, and then the overlocking is carried out. The overlock is required to be continuous and flat when in overlock, and no distortion or crack can occur; in the advancing process of the overlock machine, the overlap edge is tightly jointed by force within 1m in front of the overlock machine; the quality key of the overlock is that whether the overlap edge is tightly jointed by strong force or not in the overlock process; the panel in place on the same day must be subjected to edge locking, so that the panel cannot be blown or scraped away at night; the diameter of the lockrand is 21 plus or minus 1mm, and is generally 21 mm;
(5) Cornice drip sheet mounting
Trimming the board edges at the cornice and the gutter before installing the drip pieces, popping up trimming lines at the parts needing to be trimmed according to the design size of the parts of the board edges needing to extend into the gutter and the like, and cutting along the trimming lines by using an automatic edge trimmer during trimming, thereby ensuring that the length of the roof board extending into the gutter is consistent with the design size and the appearance of the whole roof is attractive after trimming; meanwhile, rainwater can be effectively prevented from blowing into the roof interlayer under the action of wind; then installing a cornice sealing element, and finally installing a water dropping sheet which is fixed by rivets, wherein each small rib is provided with one steel rivet; when the drip pieces are installed, it should be noted that if the lengths of the plates are different, the drip pieces must be disconnected to allow the plates to be stretched differently, leaving a 5mm gap between the drip pieces;
(6) Glue applying
The gluing refers to a sealant at the joint of the roof panel and the upper manhole and a sealant between the roof flashing panel and the joint; cleaning dust and other dirt and moisture on the interface part flashing before gluing, pasting adhesive tapes at proper positions on two sides of an area to be glued, scraping the glue once by using a round-head object with a proper diameter after the glue is completely glued at a position with an included angle, enabling the glue to be more uniform, compact and attractive, and finally tearing off the adhesive tapes;
(7) the wind-resistant clamp and the through long rod are designed according to different geographic positions, the wind-resistant direction and the size of the roof, and the wind-resistant capacity of the whole roof panel is increased once; the wind-resistant clamp and the titanium-zinc alloy short vertical edge upright double-lock-edge alloy plate are fixed by adopting a screw for fastening and fixing, so that rib plates of the alloy plate do not need to be damaged, the appearance of panel pores is reduced, and the waterproof effect of a roof is facilitated;
(8) Roof panel installation quality control measure
After the roof panel ribs are buckled into the fixed seats, after the buckling is finished, each fixed seat is checked to see whether the panel ribs are completely buckled or not, and if the panel ribs are not buckled, the panel ribs are buckled again; after the plate ribs are completely buckled, the next plate is installed, after a plurality of plates are installed, the manual plate clamping device is used for pre-locking, the position of the fixed seat is pre-locked to ensure that the upper end of the fixed seat is buckled into the plate ribs, if the fixed seat is pre-clamped, the installation precision of the fixed seat is not enough, the plate ribs are not buckled when the fixed seat is not locked or the installation position of the fixed seat is lower, and the plate ribs need to be adjusted in time, so that the plate ribs are prevented from bursting or locking empty after electric locking;
After manual overlock is finished, when electric overlock is carried out, an overlock operator carries a rubber hammer along with the hand, a plate rib, particularly a fixed seat part, is knocked in front of the electric overlock machine, so that the fixing effect of the plate is rechecked, and if the fixed seat is not well buckled, the electric overlock machine needs to be stopped and adjusted again; when serging, a serging person needs to use a pedal to locate the plate rib in front of the serging machine.
2. The construction method of the large-span short-standing-edge upright double-serging titanium-zinc alloy metal roof as claimed in claim 1, wherein the construction method comprises the following steps: the installation of the galvanized profiled steel sheet comprises the following steps: after the elevation of the steel structure purline and each key part which are installed on the construction working face is retested, the installation construction of the galvanized profiled steel sheet is carried out, the material of the ceiling layer is a YX-16-900 type galvanized profiled steel sheet with the thickness of 0.5mm, and the material of the supporting layer is a VP-125 type galvanized profiled steel sheet with the thickness of 0.6 mm; firstly constructing a suspended ceiling YX-16-900 type galvanized profiled steel sheet, then installing a rock wool heat-insulating board with the thickness of 80mm after the construction is finished, and constructing a support layer VP-125 type galvanized profiled steel sheet after the heat insulation is finished; the profiled steel sheet is fixed on the secondary purline by the clamping piece fixing screw, the self-tapping screw must be driven to the trough position, the bottom plate joint must be arranged on the collar, the lap length must not be less than 100mm, and the bottom plate must not be polluted, bent or warped.
3. the construction method of the large-span short-standing-edge upright double-serging titanium-zinc alloy metal roof as claimed in claim 1, wherein the construction method comprises the following steps: the stainless steel special fastener support is installed: after the supporting layer is finished, leveling by using a galvanized steel plate with the thickness of 0.8mm, after leveling, guiding the axis in the east-west direction of construction to the galvanized steel plate with the thickness of 0.8m by using a theodolite to serve as the positioning basis of the stainless steel special fastener support, strictly constructing the stainless steel special fastener support according to the design drawing, and fixing by using a fixing rivet after the position of the stainless steel special fastener is determined; the key point of the installation of the stainless steel support is to ensure that the support is on a straight line, and if the support is found to have larger deviation, the support must be corrected before the roof panel is installed.
4. the construction method of the large-span short-standing-edge upright double-serging titanium-zinc alloy metal roof as claimed in claim 1, wherein the construction method comprises the following steps: the roof panel: the titanium-zinc alloy roof board with the thickness of 0.7mm and the height of ribs of 25mm is adopted, the standard board width adopts 430mm according to the main structure arrangement and the self characteristics of the board, and the panel is fixed on the stainless steel fixing seat through the vertical overlocking.
5. The construction method of the large-span short-standing-edge upright double-serging titanium-zinc alloy metal roof as claimed in claim 1, wherein the construction method comprises the following steps: the leveling layer comprises the following components: the galvanized steel flat plate with the thickness of 0.8mm is fixed on the supporting layer by a rivet.
6. the construction method of the large-span short-standing-edge upright double-serging titanium-zinc alloy metal roof as claimed in claim 1, wherein the construction method comprises the following steps: the supporting layer is as follows: YX-35-750 type galvanized profiled steel sheet with the thickness of 0.6mm is adopted, and self-tapping and self-drilling screws are adopted to be fixed on the steel keel.
7. The construction method of the large-span short-standing-edge upright double-serging titanium-zinc alloy metal roof as claimed in claim 1, wherein the construction method comprises the following steps: and (4) leakage prevention: the vertical overlock fixing mode is adopted, so that the drainage section is large; the on-site profiling is adopted, the panels are not overlapped longitudinally, and no screws penetrate through the surfaces, so that the anti-seepage performance is good.
8. The construction method of the large-span short-standing-edge upright double-serging titanium-zinc alloy metal roof as claimed in claim 1, wherein the construction method comprises the following steps: temperature deformability: the vertical edge locking mode is adopted, the stainless steel fastener only limits the movement of the roof panel in the width direction and the vertical direction of the panel, and does not limit the displacement of the roof panel along the length direction of the panel. Therefore, the roof panel can freely slide and stretch on the stainless steel fastener when the temperature changes.
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