CN103711262B - A kind of curved surface aluminum-magnesium-manganese alloy roof plate system construction method - Google Patents
A kind of curved surface aluminum-magnesium-manganese alloy roof plate system construction method Download PDFInfo
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- CN103711262B CN103711262B CN201310561648.1A CN201310561648A CN103711262B CN 103711262 B CN103711262 B CN 103711262B CN 201310561648 A CN201310561648 A CN 201310561648A CN 103711262 B CN103711262 B CN 103711262B
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Abstract
<b> the invention discloses a kind of curved surface aluminum-magnesium-manganese alloy roof plate system construction method, comprises the steps such as roof purline installation, roof panel installation.Its beneficial effect is, installs simple, and therefore speed of application is fast, therefore can the reduction of erection time, obtains good economic benefit.</b>
Description
Technical field
The present invention relates to a kind of construction techniques, be specially a kind of curved surface aluminum-magnesium-manganese alloy roof plate system construction method, be applicable to industry and civilian construction large space, the metal Roof of large span, top cover and some landmark buildings, be specially adapted to the large public building roofworks of the moulding complexity such as sport category venue, concert hall, cinema.
Background technology
In recent years, along with the variation of architectural design, some public buildings are while pursuit facade effect, for meeting the requirement of the indoor large space of public building, many steel work+metal Roof systems adopting large span in roofing system, Al-Mg-Mn alloy plate metal Roof system is wherein widely used one.Aluminum-magnesium-manganese alloy roof plate system have employed ripe " BOME concealed fastener type standing seam roof system " technology, and panel is durable material Al-Mg-Mn alloy plate, and metal Roof system integrates waterproof, circulating ventilation, heat-insulation and heat-preservation, attractive in appearance.Existing construction method, general construction period is longer, and efficiency is very low.
Summary of the invention
The object of the invention is to, for the problems referred to above, provide a kind of curved surface aluminum-magnesium-manganese alloy roof plate system construction method.
For realizing this technical purpose, the technical solution used in the present invention is:
A kind of curved surface aluminum-magnesium-manganese alloy roof plate system construction method, is characterized in that, comprise the following steps:
A. roof purline is installed:
A1. steel fastener and purlin pernetti welded and installed, to offset to one side 50mm from the center line of steel fastener, welded and installed steel angle hitch; After purlin installation, then the steel angle hitch of opposite side is installed;
A2. purlin bolt and purlin pernetti are connected and fixed, when after purlin hoisted in position, penetrate bolt, first do not tighten, checking the purlin end face installed and mounted adjacent purlin either flush, or the adjacent purlin end face discrepancy in elevation within 2mm time fastening bolt, as injustice, fastening again after being adjusted by backing plate, should as far as possible by consistent for two adjacent purlin end face furnishings during installation; B. support profiled sheet is fixed on the main purlin of roofing; Support profiled sheet and select the thick high wave pressure shaped steel liner plate of 0.9mm, perforated percentage is 25%; Row's plate mode radially state, supports profiled sheet brill tail tap bolt and is fixed on the main purlin of roofing;
C. lay absorbent treatment, absorbent treatment adopts and refuses water acoustical board;
D. lay heat-preservation cotton, heat-preservation cotton adopts the thick heat insulation glass silk flosssilk wadding of 150mm, unit weight 12kg/m
3, heat-preservation cotton is laid in the middle of wingceltis bar, lower lining aluminium foil moisture sealer
E. laying water-proof coiled material, is hoisted by lower during installation of membrane and carries out paving; According to the position rabbet of T code holder, according to roof pitch large area paving from bottom to top coiled material, run into T code holder to be directly inserted according to rabbet in advance, while tear the barrier paper of bottom surface off, the roll extrusion of paving on one side coiled material, get rid of the air under coiled material, and with pressure roller roll extrusion coiled material, make it firm with base adhesive; Between adjacent web, seam adopts bridging method, lap width >=100 millimeter; After coiled material lapping operation completes, supporting sealing compound lap hermetically is used to stitch;
F. install roofing fixed bearing, roofing fixed bearing is inverted T-shaped; Adopt transit, by axis pilot measurement to wingceltis bar upper surface, as longitudinal control line that roofing fixed bearing is installed; Heat insulating mattress below first erection support; The installation of bearing adopts symmetry to make a call to two tapping screws; During installation, first should squeeze into a tapping screw, then correct once to bearing, adjustment deviation, and notice that bearing termination installation direction is consistent with roof panel bed board direction; After correction, then squeeze into second tapping screw, be fixed;
G. roof panel is installed, after roofing fixed bearing installation qualification, to stretch out the sideline of the plate at edge, gutter for control line; Plate is lifted to installation site, and time in place, first alignment sheets end control line, is then firmly pressed into the overlap edge of last block of plate by overlap edge, finally checks whether overlap edge closely engages; After roof panel position is adjusted, carry out undercut with special electric undercut machine; Finally the edges of boards of edge are pruned.
Preferably, roof panel is for falling " several " font, and the top of both sides floor is provided with the overlap edge of outer folding; Roofing fixed bearing is inverted T-shaped, and top is quincunx; During installation, first the top of roofing fixed bearing is pressed in the overlap edge of one piece of roof panel below roof panel, then the overlap edge of another block roof panel is pressed in the overlap edge of last piece of roof panel from top.
Beneficial effect of the present invention is, Al-Mg-Mn alloy plate metal Roof is due to from heavy and light, and install simple, therefore speed of application is fast, therefore can the reduction of erection time, obtains good economic benefit; Self distinctive durability ensure that the waterproof application life of building roof.Though whole roof system breadth is large, because monolithic ribbed plate is mated formation all movable in direction in length and breadth, meet cold and hot freely scalable, can not be out of shape by drawing crack because producing stress, there is good social benefit; Scene decreases the cutting of sheet material, reduces noise.
Accompanying drawing explanation
Fig. 1 is roof panel single plate structure schematic diagram.
Fig. 2 is the structural representation that roof panel veneer connects.
Detailed description of the invention
Below the present invention is described in further details.
As shown in Figure 1 and Figure 2, curved surface aluminum-magnesium-manganese alloy roof board mounting structure, comprises roof panel veneer 1, and veneer cross section is for falling " several " font, and bottom surface is provided with wavy projection 11; Rib of slab 12 top of veneer both sides is the crimping 13 of outwards turnover; Also comprise inverted T-shaped supporting seat 2, supporting seat comprises the plane 21 of bottom, and to be located at above plane and perpendicular to the support 22 of plane, stent ends is arranged with the projection 23 of three circular arcs; The crimping nesting level of two pieces of adjacent roof panel veneer sides stacks, and the stent ends of supporting seat is nested in the cavity of stacked crimping.
Wherein, roof panel veneer thickness is 0.9mm, and width is 400mm, and rib of slab height is 65mm.
Mounting process feature:
Aluminum-magnesium-manganese alloy roof plate system is mainly used in large span metal Roof, and along with the raising of building requirements, also many for special-shaped roofing, the width of the thick fluorocarbon-sprayed Al-Mg-Mn alloy roof panel of 0.9mm that panel adopts is about 400mm, and rib of slab height is 65mm.Adopt the mode of mechanical snap to carry out being connected between plate with plate, plate and deck adopt aluminium alloys holder (T-shaped code) to support, and T-shaped code is hidden in inside rib of slab, adopt concealed fastener type.
Aluminum-magnesium-manganese alloy roof plate adopts the construction method of standing-seam mechanical snap formula to have following characteristics:
Adopt mechanical snap, expose without any screw, stopped the leakage hidden trouble that on traditional roof, thousands of screw holes cause.
Aluminum-magnesium-manganese alloy roof plate can free-extension on aluminium alloys holder without restriction at length direction, can not produce thermal stresses, so just efficiently solve temperature deformation problem.
Light structure, easy construction, adopts the construction of robot brain tool, installs very flexible, quick.
Watertightness is strong, and the occlusion mode of metal Roof plate is the unidirectional dual flanging of stile and relies on mechanical forces auto-articulated.Plate coincide closely, and watertightness is strong, can effectively prevent capillary rain from invade, need not chemical caulk compound water-tight, the pollution that release colloid is aging to be brought and seepy question.
Whole structure is good, and roofing can make various moulding, meeting building aesthetic, can making overlength plate and without the need to disconnecting, roof panel the longest at present reaches 120m, ensure that roof waterproof and windproof reliability.
Technological principle
Whole curved surface roofing is made up of some veneers, is shelved on rare paving purlin on roof.For solving the sound insulation of roofing, cold-proof and warming problem, Sloping roof is placed 150mm heat insulation glass fiber.Do skeleton by purlin, steel Ge grid, purlin arranges special isolation T-shaped code (preventing " heat bridge "), T-shaped code top is stretched in the cavity that two edges of boards ribs are engaged mutually, and heat-preservation cotton installs standing-seam system roofing after laying.
Construction technology process and key points for operation
Roof purline mount scheme
5.2.1 steel angle hitch is installed
The main purlin of roofing (mouth 250mmx200mmx5.0mm; Mouth 300mmx200mmx5.0mm; 300mmx200mmx4.0mm is several for mouth) connected and steel work purlin support plate welded and installed by steel.
1. steel fastener location
Steel fastener and purlin pernetti welded and installed, steel fastener localization method are as follows: to offset to one side 50mm from the center line of steel fastener, welded and installed steel angle hitch.After purlin installation, then the corner brace of opposite side is installed.
2. steel fastener installation requirement
1), behind steel fastener location, the angle on itself and purlin pernetti surface will ensure to be 90 ± 1 °, and position deviation is in 2mm.
2) will take the measure of Reducing distortion in welding process, first symmetrical spot welding, check the angle of purlin holder, weld after qualified again, underproofly will correct angle, spot welding is wanted firmly.
3) core diameter is 3.2mm, and welding rod model is E43XX.
4) during welding, electric current is wanted suitably, and can not occur pore and crackle after appearance of weld, can not occur undercut and overlap, weld size should reach designing requirement, and weld ripples should be even, and appearance of weld should be attractive in appearance.
5.2.2 main body roof purline is installed
1. main body roof purline brief introduction
Roof purline divides major and minor purlin two kinds, and material is Q235B.The span of the main purlin of roofing and length are determined according to the roof purline pernetti of steel work, and the maximum span of roofing subpurlin is 1500mm.
2. purlin is installed
So purlin bolt and purlin holder are connected and fixed, when after purlin hoisted in position, penetrate bolt, first do not tighten, checking the purlin end face installed and mounted adjacent purlin either flush, or the adjacent purlin end face discrepancy in elevation within 2mm time fastening bolt, as injustice, fastening again after being adjusted by backing plate, should as far as possible by consistent for two adjacent purlin end face furnishings during installation.
3. purlin installation procedure, the steel angle hitch position → spot welding steel angle hitch → be welded and fixed → anticorrosion place of weld seam → purlin lifting → purlin mismatch inspection → purlin straightness accuracy → inspection of quality is checked and accepted → determined to steel work.
The installation of 5.2 support profiled sheets
Metal Roof supporting layer profiled sheet selects the thick high wave pressure shaped steel liner plate of 0.9mm, and perforated percentage is 25%; Row's plate mode is identical with golden room roofing plate, radially state, and profiled sheet bores tail tap bolt and is fixed on the main purlin of roofing, the installation requirement of profiled sheet:
5.2.1 each ripple establishes a fixture (boring tail tap bolt).
5.2.2 wave mode plate is without obvious fluctuating.
5.2.3, when adjacent plate is installed, long edge lap ripple, minor face overlap joint is not less than 150mm.
5.3 the installation of absorbent treatment
What the employing of metal Roof absorbent treatment was special refuses water acoustical board; common engineering can adopt non-woven fabrics to add the cotton combination of sound absorption; but require higher to interior temperature; the building roof that humidity is larger; as buildings such as swimming halls; sound absorption cotton will consider that water conservation is refused in increase, and common sound absorption cotton its sound-absorbing power after water suction is made moist will reduce greatly, and the sound absorption cotton simultaneously made moist will increase roof load greatly.
5.3.1 the points for attention of acoustical board laying:
1. the cotton that absorbs sound must pave, without alice, fold; Seam is tight.
2. because glass silk flosssilk wadding is delicate materials of making moist; the laying of heat-preservation cotton is best installs with roof panel and synchronously carries out, and exposed and hand over the things such as seam crossing colour bar cloth to cover, should perform weather proof safeguard measure simultaneously; for ensureing engineering construction quality, rain, snow or strong wind weather are forbidden to construct.
3. in order to prevent, sound absorption is cotton to be exposed for a long time, and during construction, necessary tight tissue, concentrated construction, try one's best and reduce glass wool open-assembly time, prepare rainproof tarpaulin simultaneously, has constructed every day rear in time by the interim covering of unlapped sound absorption cotton, in case be moistened by rain night.
5.4 heat-preservation cotton are laid
Engineering heat-preservation cotton adopts the thick heat insulation glass silk flosssilk wadding of 150mm, unit weight 12kg/m
3, heat-preservation cotton is laid in the middle of wingceltis bar, lower lining aluminium foil moisture sealer.When heat-preservation cotton is laid, aluminium foil film is downward, is arranged on the downside of heat-preservation cotton, plays trapping, thermal insulation, anti-heat radiation effect.
When centrifugally glass-wool is laid, unsuitable La get Tai is tight, has heat-preservation cotton to open the space of fully resilience after packaging, prevents because tightly there is the natural cracking of aluminium foil film by La get Tai in springback process.
For when ensureing construction, blanket of glass wool is laid by the impact of weather, zinc-plated supporting steel plate and heat-preservation cotton parallel construction, should avoid during construction the destruction of completion part and have anti-assault high wind facility.
The heat-preservation cotton that immersion bubble is wet must not directly use, to guarantee construction quality.
5.5 waterproof rolls are laid
This engineering waterproofing adopts the thick self-adhesive asphalt waterproof coiled material of 3mm, and coiled material is constructed on 150mm thick insulation cotton strip aluminium foil damp-proof course, is hoisted carry out paving during installation of membrane by lower.
5.5.1 installation of membrane
According to the position rabbet of T code holder, according to roof pitch large area paving from bottom to top coiled material, run into T code holder to be directly inserted according to rabbet in advance, while tear the barrier paper (film) of bottom surface off, the roll extrusion of paving on one side coiled material, get rid of the air under coiled material, and with pressure roller roll extrusion coiled material, make it firm with base adhesive.For gutter position, rain rainbow double sided self-adhered membrane should descend turn over to encase gutter chamber wall by roofing layer.
5.5.2 joint treatment
Between adjacent web, seam adopts bridging method, lap width >=100 millimeter; For ensureing coil waterproof layer quality, can, after coiled material lapping operation completes, supporting sealing compound lap hermetically be used to stitch.The seam of waterproof roll should consider roof pitch direction, acts in accordance with slope overlap joint, avoids inverse stubble.
5.5.3 T code holder joint strengthening process (as the permissible variation in dimension table that holder (T code) is installed)
After the installation of membrane of large face, additional enhancing must be carried out to T code holder and process, to improve the Integral sealing of flexible waterproof layer.
The installation of 5.6 high strength aluminium supporting seats
5.6.1 high strength aluminium supporting seat brief introduction:
The construction of high strength aluminium supporting seat is the key procedure of roof panel construction, can install smoothly and the wind loading rating of roof panel because it is directly connected to roof panel, this engineering selects T code to be aluminium alloys bearing, the key link being installed as roofing installation of T code, and heat insulating mattress is arranged at bottom; The particularity of metal Al-Mg-Mn alloy plate because of its material and the needs of mounting process, its roof panel adopts special aluminium alloys bearing to fix, and takes seaming lock seaming to be formed by connecting; Roof panel fixed bearing is molded by aluminum alloy cast, and entirety is an one integral piece, without seam and junction; Employing special stand connects, and also has a significant advantage, and namely under variations in temperature, whole roof board system can be free to slide, stretch; This function avoid due to variations in temperature larger time, it is flexible that metal roofing board causes owing to expanding with heat and contract with cold, and makes buckle closure be engaged seam and misplace, cause the phenomenon of roof leakage.
5.6.2 the installation procedure of roofing aluminium supporting seat
Aluminium alloy panel fixed bearing roofing wind is carried the stressed accessory being delivered to roofing wingceltis bar, and its installation quality directly has influence on the wind resistance of roof panel.In addition, the alignment error of aluminium alloys bearing also can have influence on longitudinal free-extension of roof panel, the leakproofness that front roof board slot mouth fastens.Therefore, the installation of roof panel bearing is also the critical process in this engineering.
The technological process of aluminium supporting seat is: the check after the installation → installation of the surveying setting-out before installation → roofing aluminium supporting seat.
1. the surveying setting-out before installing
First, adopt transit, by axis pilot measurement to wingceltis bar upper surface, as longitudinal control line that aluminium alloys bearing is installed.
First row aluminium alloys bearing is installed the most key, will directly have influence on the installation accuracy of follow-up bearing.Therefore, first row support position will repeatedly be checked, and its standoff distance should adopt scale to determine.
In addition, the quantity of aluminium alloys bearing, decides the wind loading rating of roof panel.So aluminium alloys bearing strictly should be installed by layout design along the row of plate length direction, must not neglected loading, less dress.
2. the installation of aluminium supporting seat
Roof panel bearing fixing quality control thinking, after roof panel is installed, because of in process of expansion and contraction, can make the free slippage of roof panel, prevents and is pulled open by roof panel in the process of roof panel slippage because bearing installation is incorrect.
When aluminium alloys bearing is installed, should heat insulating mattress below first erection support.The installation of bearing adopts symmetry to make a call to two tapping screws.During installation, first should squeeze into a tapping screw, then correct once to bearing, adjustment deviation, and notice that bearing termination installation direction should be consistent with roof panel bed board direction.After correction, then squeeze into second tapping screw, be fixed.After installing, the tightness of screw should be controlled well, avoid occurring heavy nail or floating nail.
3. the repetition measurement after installation
First use each row aluminium alloys bearing of visual inspection, whether point-blank to see.When aluminium alloys bearing is as occurred relatively large deviation, after occlusion installed by roof panel, can affect the free-extension of roof panel, time serious, rib of slab will be worn through under temperature action.Therefore, during as found that there is larger deviation, tackling bearing devious and correcting, until meet installation requirement.
Check after bearing installation comprehensively, adopt and check in holder wabbler position span wire system, to dislocation and the gradient is not inconsistent and the uneven timely adjustment of roof panel.
5.6.3 the selection of high strength aluminium supporting seat set bolt
High strength aluminium supporting seat be fixedly directly be fixed on wingceltis bar by tap bolt, more domestic engineerings have ordinary carbon steel to follow closely and stainless steel lag screws two kinds about the use of bolt at present, and because of its material difference, its performance is also different.
The installation of high strength aluminium supporting seat is appropriate to the occasion selects stainless steel lag screws, because the activity of metal is different, can electrochemical corrosion be there is in the Contact of different metal, the primary condition one that galvanic corrosion problems produces there is potential difference, two is direct contacts, prevent electrochemical corrosion by increasing rubber pad partition medium during construction, thus overcome its shortcoming, give full play to its advantage.
5.7 roof panel constructure scheme
5.7.1 the test before installing, adjustment
Before the installation carrying out roof panel, need that measurement is carried out to already installed high strength aluminium supporting seat and check.
1. whether each aluminium to prop up coordinate high consistent with the absolute altitude of design.Because roof panel is fixed on high strength aluminium supporting seat, therefore the absolute altitude of aluminium supporting seat whether consistent with the absolute altitude of design directly have influence on whole roofing moulding and windproof, the water resistance of entirety.
2. the wind resistance of in the future whole roofing owing to taking into full account in the middle of roofing Deepen Design, and aluminium supporting seat is the key ensureing whole roofing wind resistance, therefore needs to check mounted aluminium supporting seat before roof panel is installed, and must not fill less, neglected loading.
5.7.2 the mounting process of roof panel
1. the installation procedure of roof panel
The flow process that roof panel is installed is: unwrapping wire, and------undercut---in place edges of boards are pruned.
1) unwrapping wire: after " T " code installation qualification, only need establish plate end position line, generally to stretch out the sideline of the plate at edge, gutter for control line, plate stretches out the length at edge, gutter with suitable slightly larger than being designed to, so that prune.
2) in place: plate is lifted to installation site by constructor, time in place, first alignment sheets end control line, is then firmly pressed into the overlap edge of last block of plate by overlap edge, finally checks whether overlap edge closely engages.
3) undercut: after roof panel position is adjusted, carries out undercut with special electric undercut machine, requires that the limit of stinging is continuous, smooth, can not occur distortion and breach.Be engaged at undercut machine in the process of creeping, firmly must clamp within the scope of the 1mm of its front and overlap edge is engaged closely, this is also the quality critical place of mechanical undercut.The same day, roof panel in place must complete undercut, in order to avoid plate damage by dragging or blow off when the wind comes from.
4) edges of boards are pruned: after roof panel installation, need need to prune to the edges of boards of edge, to ensure roof panel neat in edge, attractive in appearance.Roof panel stretches into length in gutter to be not less than 80mm, and is not more than 150mm and is advisable.
5.7.3 the characteristic of roof panel:
Start to carry out the installation of roof panel after test before completing roof panel and installing.
Aluminum alloy roof plate is installed and is adopted mechanical type undercut lock seaming.After roof panel has been laid, should be engaged with undercut machine, to improve globality and the bearing capacity of plate as early as possible.
When roof panel is laid complete, after complete axis, first use manually by panel with bearing to good, then be placed on by nip machine on the rib limit seam crossing of two pieces of roof panel, pair pin carried by nip machine support, and prevent from toppling.
Firmly that the bearing under the eyelet mouth of plate and plate is steady and sure when roof panel is installed, then pull the messenger of nip machine, after making it follow people closely, by roof panel occlusion closely.
5.7.4 the repetition measurement after installation
After the installation completing metal roofing board, the properties of technology group to the metal roofing board of installation is arranged to test, to ensure the performance such as waterproof, wind resistance of metal roofing board.
5.7.5 the control of key node installed by roof panel
1. external corner, ridge
The process of roofing external corner is an important step of roof waterproof engineering, is also the guarantee of roof construction quality, and the method for multiple waterproof must be adopted to carry out processing node.Construction through for many years proves, this node processing is also science, effectively.
1) roof panel upper end oralia and roof panel aluminium alloys rest rivet are fixed, and slide to prevent roof panel to be subject to variations in temperature; Or roof panel is because of by External Force Acting, slides because the undercut of roof panel stile is not tight.
2) first by with the roof panel port crimping placed, height of flange is about 50mm, and to prevent soft roofing, because rainwater blows back into roofing, and cause and leak, engineering many curved surfaces roofing is also necessary, can prevent from pouring into below roof panel because of wind rainwater.
3) method adopting aluminium alloys seal to be combined with foam seal bar, first fix with the aluminium alloys seal matched with template and roof panel rib of slab waterproof rivet interlacement, and after seal, fill in the ridge foam seal bar consistent with template, then ridge cover plate and seal rivet are fixed in centre, even if the rivet exposed like this leaks, rainwater is also to drop on roof panel instead of indoor, and seal and weather strip are all prefabricate approved products.
5.7.6 inner corner trim, limit received by roof panel and gutter
The quality of the process of roofing inner corner trim directly can have influence on roof waterproof and roofing safety, otherwise has the possibility that roof panel started by strong wind.In this engineering, my department have employed safe, reliable, novel node processing mode.
1. the roof purline of gutter edge is advisable from the distance of gutter with 100mm, and is not more than 150mm, and roof panel stretches into the length about 80 ￣ 150mm in gutter.So to ensure that the cut to lengthen of roof panel lower port distance holder is within 250mm, is advisable with 150mm.
2. roof panel lower port hems process, forms water droplet mouth shape.
3. arrange flashing plate below roof panel, the galvanized steel plain sheet annex of built-in 1.5mm, to play elaboration.Flashing plate can play waterproof and the inner various material of folding gear Roof system, in case expose.
4. one watertight shutter is set on roof panel rib of slab.Common metal roof pitch is how comparatively large, and the speed that rainwater dives is very large, in order to avoid the rainwater swept away soon enters the roof panel on opposite, arranges watertight shutter and can play the effect that rainwater is slowed down.
5.7.7 the reinforcement process of weak link
For passing the weak links such as thing side, gable, general way gable cover plate flashing and roof panel most edge rib of slab self-drilling connection is fixed simply, and its nail must run through inside and outside roofing, once there is seal failure, namely can produce and leak.
Way for weakness must be careful, work out science, reasonable reliably scheme, first prefabricated aluminium alloys gable catching groove rivet is fixed on roof panel rib of slab, fix with holder after fastening groove with gable fastener again, so just, catching groove is firmly fixed, then adjustable for prefabricated T-shaped catching groove is stuck on catching groove, finally skew flashing rivet is fixed on T-shaped adjustable catching groove, because the rivet hole exposed is not through roof panel, exist so do not have any leak.
5.7.8 receive limit to close up
Metal Roof has some more and goes out roofing air port, skylight etc., goes out the key that the receipts limit shell nosing treatment of roofing equipment is roof waterproof.
Utilize the solderability that aluminum alloy materials is good, roof panel and limit, hole flashing are welded to connect, have made the three-dimensional water-proof system of sealing, limit, hole flashing flange height can ensure that rainwater can not flow into indoor.Simultaneously, support is established cover plate flashing fasten the flange of limit, hole flashing, limit, hole flashing, and leave enough spaces between skylight or support and enable roof panel and flashing free-extension, thus can waterproof, be not connected and fixed with limit, hole flashing again, the degree of freedom of expanding with heat and contract with cold of roof panel can not be affected, avoid producing the damage that thermal stresses causes roof panel or flashing.
5.8 gutter fabrication and installation
5.8.1 gutter
Gutter generally adopts 3.0mm steel plate to be made into groove type and installs.Being produced in factory of gutter is carried out, and according to detailed design, determines the development size of open valley, and then carry out shaping on duplex numerical control electrohydraulic pressure large-sized bender, with the form of 4 ￣ 6m mono-section, unitizing, carries out erecting and welding during in-site installation.
5.8.2 gutter is installed
When gutter is installed, material use loop wheel machine of showing up directly lifts to roofing construction scope of operation position, carries out according to the order of gutter keel installation → gutter plate installations → gutter plate adjustment welding → weld inspection inspection → be delivered for use.
5.8.3 install before detection, adjust poor
The quality that gutter is installed has influence on the drainage performance of roofing, and because open valley skeleton is connected on the skeleton of steel work, therefore the installation accuracy of steel work directly affects the installation of gutter.
Before the welding carrying out open valley skeleton, the properties of the steel work of each mounting points position is measured, ensure the accuracy of frame welding.
5.8.4 gutter keel installation
Because of drainage gutter material 3.0mm steel plate, its deadweight is larger, load-bearing mainly relies on its underpart gutter support, during gutter support installing, require that its end face is identical with sky trench depth apart from two side timber end face distances, namely the absolute altitude of gutter support ensures that every section of gutter can contact completely with support, makes gutter support force even.Gutter steel frame lifts in the lump when installing roof purline, and skeleton, in the installation on ground section of one-tenth, roofing is welded and fixed.
Gutter bracing frame, at factory's welding fabrication, ensureing planeness bottom gutter and drain slope direction according to surveying the control line established, answering surrounding weld all around during welding.
Gutter measurement must be carried out before gutter support is installed, gutter unwrapping wire must with roof board material synchronously carrying out at gutter position absolute altitude, should ensure while the levelness guaranteeing gutter and straightness accuracy roofing holder, curtain wall aluminium plate installation dimension, prevent gutter not straight line suitable for reading or gutter skeleton from differing in the position gradient of installation aluminium supporting seat, make plate end position to be fixed in gutter part.
5.8.5 gutter overlap joint, welding
Connected mode between two sections of gutters is for being welded and fixed connection, and by clean for cutting mouth polishing before the docking of gutter plate, polishing degree reaches the standard of seamless surface.Notice during docking that butt joint gap more than 1mm, first at interval of 100mm spot welding, can be able to not be welded after confirming to meet welding requirements.Welding rod model is E43 series, and weld seam is shaped for one time.
5.8.6 welding inspection
After every bar gutter installs, except reply is except weld appearance conscientiously checks, also should check in the rainy day pore whether weld seam has naked eyes and cannot find, as found pore infiltration, then apply sanding machine and to polish this place, and again weld.
5.8.7 close water experiment
After gutter installation, the closed-water test of gutter should be carried out, during closed-water test, pour water and should reach 2/3 of gutter maximum amount of water in gutter inside, and close water and reach more than 48h, gutter should check bottom gutter after pouring water immediately comprehensively, until 48h is water-tight, repair welding process should be carried out in time if any leakage point.
6 materials and equipment
6.1 material
The thick fluorocarbon-sprayed Al-Mn-Mg alloy board of roof panel 0.9mm; Roof panel base plate is the colored Pierced Aluminum Plank of the thick low-carbon (LC) of 0.5mm; To be that 50mm is thick refuse water acoustical board to the sound absorption material of roofing, and acoustical board is refused water, ventilated membrane and the superfine glass cotton that absorbs sound by outer field top grade and combined; Roofing heat insulating material adopts 150mm heavy sheet glass cotton, requires coefficient of thermal conductivity≤0.042w/ (mk) (during average temperature 20 DEG C), unit weight>=12kg/m
3, hygroscopic capacity≤0.3% (when temperature 50 ° of C, relative humidity 95%) of 4 days at ambient pressure; Aluminium foil damp-proof course; Structure supporting layer is galvanized steel wire netting 25 × 25 × φ 2.0; Roofing subpurlin is square bar purlin; Roofing is received limit, gutter and flashing plate and is all adopted the sheet material with the equal material of cornice sheet material, and by design bending forming.
Application example
1. Nanchang international sport center stadium project is the match main meeting-place that Nanchang City undertakes 2011 Nian Qijie National Inter-City Games, overall floorage 82742m2, main body six layers on the ground, building height is 51.85m, for steel work awning and reinforced concrete frame-shear wall structure, steel cage canopy adopts plane steel pipe truss+single syncline support structure, steel cage canopy plane is in " ellipse ", north and south facade is in " shape of a saddle ", stadium metal Roof engineering, annular grandstand girth m more than 960, went into operation in March, 2009, and in September, 2011 completes; Engineering have employed this technology, the lines flow smoothly for ceiling, from getting a bird's eye view just as a width " Diagram of the Supreme Ultimate " in the air, aluminum-magnesium-manganese alloy roof area 38500m2, the interconnecting line formation space networks trellis between the outer shroud support node of space truss structure is passed through in stadium, external surface supports direction along outer shroud and lays standing-seam roofing, acoustical absorption heat preserving layer and solid sunlight board and aluminum veneer, and the standing-seam plate of each net region forms " S " twisted board along helical form.
Engineering Al-Mg-Mn alloy plate roofing construction quality, the aspect such as handsome in appearance are all far beyond expection requirement, and structurally waterproof structure is unique, and from heavy and light, flowing water is smooth and easy, and waterproof effect is good.Construction obtains the high evaluation of numerous domestic expert, also obtain the consistent favorable comment of design, construction, management and numerous visitor.
2. Nankang City cultural art center is positioned on main road, Mashan, sky, Nankang City, floor space 10280 square metres, overall floorage 38761 square metres, building general height 30.7 meters, frame construction B1, on the ground four layers, be divided into A, B, C, D tetra-districts, builds work first build Co., Ltd's construction by Jiangxi, engineering went into operation on January 18th, 2007, and on August 18th, 2011 is completed.
Engineering foundation adopts pile foundation and single footing, top spherical net brace system roof system, maximum span reaches more than 70 rice, spherical shell roofing area 6000 square metres, external decoration adopts circular arc silver gray aluminium manganese plate, also adopt multinomial new technology, new material technology, high performance concrete uses, comprise HRB-400 level reinforcing bar application technology, novel wall material application technology, new type waterproof coiled material is applied, construction sealing materials and hollow glass application, outer wall self heat-preserving system construction technology, ornamental stone computer parquets typesetting technique, engineering comes into operation structural safety so far, settlement stability, accumulative settling amount is 2.6 millimeters, main body free from flaw, using function is good, without any abnormal quality phenomenon, applying unit is satisfied.
The above; be only preferred embodiment of the present invention; not in order to limit the present invention, every above embodiment is done according to technical spirit of the present invention any trickle amendment, equivalently replace and improve, within the protection domain that all should be included in technical solution of the present invention.
Claims (2)
1. a curved surface aluminum-magnesium-manganese alloy roof plate system construction method, is characterized in that, comprise the following steps:
A. roof purline is installed:
A1. steel fastener and purlin pernetti welded and installed, to offset to one side 50mm from the center line of steel fastener, welded and installed steel angle hitch; After purlin installation, then the steel angle hitch of opposite side is installed;
A2. purlin bolt and purlin pernetti are connected and fixed, when after purlin hoisted in position, penetrate bolt, first do not tighten, reexamine the purlin end face and mounted adjacent purlin either flush installed, or the adjacent purlin end face discrepancy in elevation within 2mm time fastening bolt, as injustice, fastening again after being adjusted by backing plate, should as far as possible by consistent for two adjacent purlin end face furnishings during installation;
B. support profiled sheet is fixed on the main purlin of roofing; Support profiled sheet and select the thick high wave pressure shaped steel liner plate of 0.9mm, perforated percentage is 25%; Row's plate mode radially state, supports profiled sheet brill tail tap bolt and is fixed on the main purlin of roofing;
C. lay absorbent treatment, absorbent treatment adopts and refuses water acoustical board;
D. lay heat-preservation cotton, heat-preservation cotton adopts the thick heat insulation glass silk flosssilk wadding of 150mm, unit weight 12kg/m3, lower lining aluminium foil moisture sealer;
E. laying water-proof coiled material, is hoisted by lower during installation of membrane and carries out paving; According to the position rabbet of T code holder, according to roof pitch large area paving from bottom to top coiled material, run into T code holder and be directly inserted according to rabbet in advance; While tear the barrier paper of bottom surface off, paving roll extrusion coiled material, gets rid of the air under coiled material, and with pressure roller roll extrusion coiled material, makes it firm with base adhesive; Between adjacent web, seam adopts bridging method, lap width >=100 millimeter; After coiled material lapping operation completes, use sealing compound lap hermetically seam;
F. install roofing fixed bearing, roofing fixed bearing is inverted T-shaped; Adopt transit, by axis pilot measurement to wingceltis bar upper surface, as longitudinal control line that roofing fixed bearing is installed; Heat insulating mattress below first erection support; The installation of bearing adopts symmetry to make a call to two tapping screws; During installation, first should squeeze into a tapping screw, then correct once to bearing, adjustment deviation, and notice that bearing termination installation direction is consistent with roof panel bed board direction; After correction, then squeeze into second tapping screw, be fixed;
G. roof panel is installed, after roofing fixed bearing installation qualification, to stretch out the sideline of the plate at edge, gutter for control line; Plate is lifted to installation site, and time in place, first alignment sheets end control line, is then firmly pressed into the overlap edge of last block of plate by overlap edge, finally checks whether overlap edge closely engages; After roof panel position is adjusted, carry out undercut with electronic undercut machine; Finally the edges of boards of edge are pruned.
2. curved surface aluminum-magnesium-manganese alloy roof plate system construction method as claimed in claim 1, is characterized in that, roof panel is for falling " several " font, and the top of both sides floor is provided with the overlap edge of outer folding; Roofing fixed bearing is inverted T-shaped, and top is quincunx; During installation, first the top of roofing fixed bearing is pressed in the overlap edge of one piece of roof panel below roof panel, then the overlap edge of another block roof panel is pressed in the overlap edge of last piece of roof panel from top.
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