CN115142624A - Double-layer plate metal roof anti-leakage mounting process - Google Patents
Double-layer plate metal roof anti-leakage mounting process Download PDFInfo
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- CN115142624A CN115142624A CN202210798972.4A CN202210798972A CN115142624A CN 115142624 A CN115142624 A CN 115142624A CN 202210798972 A CN202210798972 A CN 202210798972A CN 115142624 A CN115142624 A CN 115142624A
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Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D15/00—Apparatus or tools for roof working
- E04D15/04—Apparatus or tools for roof working for roof coverings comprising slabs, sheets or flexible material
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D13/00—Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage ; Sky-lights
- E04D13/16—Insulating devices or arrangements in so far as the roof covering is concerned, e.g. characterised by the material or composition of the roof insulating material or its integration in the roof structure
- E04D13/1687—Insulating devices or arrangements in so far as the roof covering is concerned, e.g. characterised by the material or composition of the roof insulating material or its integration in the roof structure the insulating material having provisions for roof drainage
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D3/00—Roof covering by making use of flat or curved slabs or stiff sheets
- E04D3/36—Connecting; Fastening
- E04D3/3605—Connecting; Fastening of roof covering supported directly by the roof structure
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Roof Covering Using Slabs Or Stiff Sheets (AREA)
Abstract
The invention relates to the technical field of constructional engineering, in particular to a double-layer plate metal roof anti-leakage installation process, which comprises the following steps: the first step is as follows: inspecting a roof steel structure; the second step is that: measuring and paying off and positioning; the third step: mounting a purlin support; the fourth step: mounting a purline system; the fifth step: mounting a gutter; and a sixth step: mounting a bottom layer profiled steel sheet; the seventh step: mounting a roof panel fixing support; the eighth step: installing a heat preservation and sound insulation plate; the ninth step: laying a waterproof breathable film; the tenth step: installing a laminated plate on the roof; the eleventh step: processing ridge nodes; the twelfth step: closing up and checking and accepting a roof system; through setting up this installation technology, make each tectonic layer of roofing can exert its due effect of design, can effectively prevent roofing water leakage phenomenon, reduce maintenance work volume, improve roofing life.
Description
Technical Field
The invention relates to the technical field of constructional engineering, in particular to an anti-leakage mounting process for a double-layer plate metal roof.
Background
With the rapid development of urban construction in China, the number of large-scale domestic construction projects is increasing, and a large number of public buildings such as high-speed railway station houses, airport terminal buildings, large-span stadiums, libraries and the like become urban signs and are in an important position in the urban development process. Especially, under the current smart city and ultra-low energy consumption building development concept, the design and construction of large public buildings more and more embody the scientific and technical civilization and local cultural characteristics of the city, which not only influences the image of the city, but also influences the economic development of the city. In the information age at present, a public building integrating sociality, artistry and technology is the first impression of people on cities. In order to meet the large space use requirements of crowded places, most public buildings constructed in various places in recent years adopt space net racks and truss structure systems, and corresponding roofs adopt metal roofs, so that compared with the traditional reinforced concrete roofs, the metal roof system has (1) good plasticity and can adapt to various roof forms with complex shapes; (2) The panel has multiple color and texture selectivity, different metal materials and construction methods can be selected according to different building styles, and the building requirements can be met to the maximum extent; (3) The integral structure is good, the adaptability to deformation is strong, and the change of the surface temperature of the roof can be easily adapted; (4) The roof system has light weight, reduces the building load and is beneficial to the transportation and construction of materials; (5) The construction is carried out without wet operation, and the construction is organized by systematic design, factory processing and flow construction, so that the installation is simple, convenient and quick, and the construction quality is easy to ensure; at present, a conventional double-layer metal plate roof system is generally composed of purlins, a profiling bottom plate, a heat insulation layer, a waterproof layer, a T-shaped fixed seat and an upper roof plate.
Because the territory of China is wide, the climate difference between the south and the north is large, the design structure and the material selection of the metal roof are different, particularly, the construction process of the metal roof of some large public buildings at present is unreasonable, the detailed method is not standard, and the process control is not in place, so that the water leakage phenomenon of the metal roof is caused frequently in rainy season and heavy rain weather, and the phenomenon of leakage collection by containers is caused by frequently seeing local fence marks on the ground of buildings in public places such as airport terminal buildings and high-speed rail waiting rooms in part of cities. The water leakage caused by the water-proof construction quality problem of the metal roof of part of the marked public buildings not only influences the normal use of people, but also causes adverse social influence.
Therefore, the anti-leakage mounting process for the double-layer plate metal roof is provided for solving the problems.
Disclosure of Invention
In order to make up for the defects of the prior art and solve the problems, the invention provides an anti-leakage mounting process for a double-layer plate metal roof.
The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to a double-layer plate metal roof anti-leakage installation process, which comprises the following steps:
s1, roof steel structure inspection: before a metal roof system is installed, retesting is carried out on the existing structural components on a steel structure net rack, the position and the elevation of the axis of the steel truss and an installation plane, recording is carried out on the parts which do not meet the design requirements of drawings, corresponding treatment measures are provided, and the parts are corrected in time;
s2, measuring and setting out and positioning: determining the position of a typesetting initial line according to the typesetting design of each structural layer of the roof; marking the initial point of typesetting on the net rack and the upper chord of the truss along the span direction of the roof in the construction, applying ink line identification to the initial point, and sequentially measuring the installation positions of purlins, gutters, roof panel supports, roof panels and other components, wherein the connecting line of each point is vertical to the longitudinal axis of the building;
s3, purlin support installation: the actual installation position of the purlin support is determined according to design requirements and by combining field conditions, the purlin support at the roof panel is perpendicular to the upper chord, and the purlin support at the cornice is perpendicular to the web member and meets the requirement of roof drainage gradient when being installed; after the purline support is installed, checking and rechecking the installation angle and the elevation of the purline support, and after the requirements are met, installing a purline system;
s4, purlin system installation: firstly, mounting a main purline, and then mounting a secondary purline; the roof main purline is connected with the purline support through a screw; the installation of the main purlines is parallel to the drainage direction of the net rack or the truss roof, the main purlines are fixed on the purline supporting plate in regions, and the installation of the secondary purlines is carried out according to the designed interval after the main purlines are fixed;
s5, gutter installation: the gutter is generally arranged at the eave of the roof or the high-low span joint part, and the gutter is installed according to the designed position after the installation of the purlines of the roof is finished, so that the reference is provided for the subsequent operation of the roof;
s6, installing a bottom-layer profiled steel sheet: before the bottom layer plate is installed, according to a datum line measured and released on a purline in advance, every twenty plate widths form a group, and a whole roof panel installation position measurement and control network is subdivided; after the first contour plate is fixed in place, respectively pulling a continuous datum line at the bottom end of the plate and the top of the plate to provide a basis for quickly fixing the subsequent contour plate; the profiling bottom plate is connected with the secondary purlins through self-tapping screws, the distance between the self-tapping screws is the width of the bottom plate in the transverse direction and the distance between the secondary purlins in the longitudinal direction, and the self-tapping screws are connected with the purlins at the trough positions;
s7, mounting a roof panel fixing support: according to the measured reference line and the support layout drawing, measuring out a mounting point position to an operation surface by using a theodolite, and using the mounting point position as a basis for mounting the T-shaped aluminum alloy support; the support is fixed by self-tapping screws directly on the purlines, and the mounting distance and the position of the support correspond to the roof panel so as to be meshed with the inner ribs and the central ribs of the roof panel correctly;
s8, installing a heat-preservation sound-insulation plate: the heat-insulating and sound-insulating material is a non-combustible inorganic substance and has good sound-insulating, heat-insulating and fireproof functions, and the heat-insulating boards are inserted into the floor of the roof according to different areas after a certain working surface is finished; when the heat-insulating sound-absorbing material with the aluminum foil is installed, the surface with the aluminum foil faces downwards, the heat-insulating material is paved fully when the heat-insulating sound-absorbing material is paved, and the pavement is tight;
s9, laying a waterproof breathable film: when the waterproof breathable film is laid, a laying mode is selected according to actual conditions on site, the waterproof breathable film and the heat-insulation board are fixed through rock wool nails, the rock wool nails at the fixing positions are sealed through butyl adhesive tapes, and the area of the sealing positions is based on the standard that the nail heads are completely covered through the butyl adhesive tapes;
s10, installing a roof laminated plate: generally, a roof upper plate is generally designed into an aluminum-magnesium-manganese roof plate, the roof plate is firstly laid above a T-shaped aluminum alloy support during installation, then the installation position is adjusted, finally, a serging machine is used for occluding the two roof plates at the top ends of the roof plates, after the operation is finished, whether errors exist in manual occlusion positions is checked, and finally, a special electric occlusion machine is used for carrying out occlusion and serging on rib edges adjacent to the two roof plates;
s11, ridge node processing: the ridge nodes are covered and closed by ridge cover plates; the mounting direction of the roof ridge is vertical to the direction of the roof color steel plate; the ridge cover plate is fixed by a rivet; waterproof treatment is carried out at the fixed position, and the waterproof treatment is carried out according to three layers of waterproof coating films and one layer of waterproof cloth;
s12, closing up treatment and roof system acceptance: the roof binding off mainly refers to the treatment of roof panels and details of gutter, drainage port, cornice aluminum plate and the like of a building; the total length of the metal roof board penetrating into the gutter is not less than 125mm; a through-length aluminum alloy water dripping device is arranged at the top end of the lower opening of the roof, and a sealing strip with the same shape and size as the roof panel is fixed between the roof panel and the aluminum alloy water dripping device, so that the roof panel is prevented from being invaded by strong wind and being soaked by rainwater; and after the construction of the roof edge closing and closing is finished, checking and accepting the whole roof system.
Preferably, in S4, the theodolite is used for emitting a purlin positioning control line on an installed net rack or truss structure during installation, marks are made on the net rack or truss rod pieces according to the positioning line, a main purlin is fixed on a purlin support according to the marked position, the position is adjusted by a gasket, then a secondary purlin is installed, the situation that the top surface of the purlin is on the slope surface line of the roof after installation is guaranteed, and the position deviation is controlled within 5 mm.
Preferably, in S5, before the gutter is installed, the stainless steel gutter splicing piece is processed according to the size of a design drawing, the stainless steel water tank is hoisted to an installation working face and is placed on a purline according to a design elevation, the stainless steel gutter splicing piece is fixed with the purline after the position of the stainless steel gutter is adjusted, the upper and lower edges of the gutter are required to be smooth, the uneven part needs to be leveled by fillers such as angle iron, and the error is not more than 6mm; the connection mode between two sections of gutter usually adopts argon arc welding; during welding, spot welding is carried out at intervals of 100mm, and formal welding can be carried out after the welding requirements are met.
Preferably, in S6, when the bottom-layer profiled steel sheet is installed, self-tapping screws are used for positioning the profiled steel sheet on the roof purline, after positioning, connecting points between the profiled steel sheet and the steel purline are encrypted through nail shooting, and at least one steel nail is driven into each wave trough of the profiled steel sheet; in order to enhance the tensile strength between the steel purlines and the profiled steel sheets, a lock seaming nail is arranged at intervals of 250mm along the plate length direction, so that the bottom profiled plates can be connected into an independent whole after being installed; and the connection length between the adjacent plates is not less than 120mm; and (3) carrying out sectional inspection after the bottom profiled steel sheet is installed in a certain area, measuring the width of the fixed profiled sheet according to a datum line, measuring the width of the profiled sheet at the top and the bottom of the profiled sheet once respectively, and judging the installation straightness of the bottom plate so as to ensure that the bottom plate is not moved and is in a fan shape.
Preferably, in S7, a self-tapping screw is firstly driven into the support when the support is installed, then the support is corrected, errors are adjusted, the installation direction of the end head of the support is finely adjusted, and the direction of the end head of the support is consistent with the direction of a roof panel paving plate; after the correction is finished, other screws are driven to firmly fix the screw.
Preferably, in S8, the lap joint length of the upper layer and the lower layer of the heat-insulating material is not less than 100mm when the upper layer and the lower layer of the heat-insulating material are staggeredly paved, the gaps are tightly squeezed, the corner parts are fully filled, and the appearance is kept intact; the heat insulation material is fully attached to the roof panel, and an air space between the heat insulation material and the roof panel cannot be formed, so that impact sound of rainwater on a roof is reduced when raining, meanwhile, air in the middle of a roof structure layer is prevented from flowing, and the heat insulation effect of the roof is ensured.
Preferably, in S9, the waterproof breathable film is laid along the drainage direction of the roof, and the length and the width of the lap joint are not less than 100mm.
Preferably, in S10, when the upper layer roof panels are arranged, attention should be paid to the meshing direction of the interfaces of the adjacent panels, the direction of the interfaces of the roof panels must be determined according to the local maximum frequency wind direction, and the meshing direction of the interfaces is consistent with the maximum frequency wind direction.
Preferably, in S11, the plate edge is bent upwards by a folding angle of about 80 degrees at the high position of the end of the roof plate to form a water baffle, a high-position sealing strip is installed to form double water resistance, and then a flashing plate and a ridge cover plate are installed at the upper part to ensure that rainwater cannot enter along the plate end to form water-proof treatment of the end of the roof plate.
The invention has the advantages that:
1. in the invention, the installation and construction process is innovated: the post-installation procedure of the gutter in the traditional roof construction is advanced to the installation after the purline system is completed, so that the potential water leakage hazard caused by the construction of a reserved joint surface of a roof structural layer in the original gutter installation procedure is reduced. By adopting the process flow and the method, the construction operation line is clear, the whole construction speed is high, the waterproof performance is good, and the process flow operation is convenient to organize.
2. In the invention, the plate mouth occlusion direction is optimized: according to the geographical position of the building, the occlusion direction of the metal roof panel interface is determined according to the maximum frequency wind direction of each place, the seaming structure and the seaming process of the roof panel are controlled in a key mode, the probability of water leakage at the splicing position of the roof panel is eliminated, and later maintenance is simple and convenient.
3. In the invention, the waterproof membrane is reinforced and reinforced: the method is characterized in that a waterproof breathable film penetrating part of an aluminum alloy support is not generally subjected to reinforcement in a traditional roof method, the support needs to be reinforced and reinforced by penetrating the waterproof film penetrating part, a butyl adhesive tape is wound around the support for sealing, a roof condensate water channel leaking through the support is eliminated, and the leakage resistance of a weak point of the waterproof layer can be effectively improved.
4. In the invention, the detailed method of the nodes is optimized: and bending the plate edge upwards at a ridge at the high end part of the roof plate by a certain angle, and bending the plate downwards at the low end part of the roof plate by a certain angle to form the natural water baffle. Meanwhile, the sealing strips with the same shape and size as the roof panel are installed, and the rainwater can be effectively prevented from invading by refining the node construction method.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
FIG. 1 is a process flow diagram of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, a double-deck metal roof leakage-proof installation process includes the following steps:
s1, roof steel structure inspection: the existing finished components on the steel structure net rack, the steel truss axis position, the elevation and the installation plane are measured before installation, the part which does not accord with the design requirement of the drawing is recorded, the corresponding processing scheme is provided, and the correction is carried out in time.
S2, measuring and setting out and positioning: according to the design of purlines and roof slabs, the position of the starting line of the slabs is determined, the starting point of the slabs is marked on the upper chord of the net rack or the steel truss along the span direction, the starting point is marked by using ink lines, and the connecting line of each point is perpendicular to the longitudinal axis of the building.
S3, purlin support installation: pay-off measurement should be noted when the purlin asks the installation, and roof boarding department purlin asks the installation to need perpendicular to upper chord member, and eaves mouth department purlin asks the installation to satisfy roofing drainage design slope, requires perpendicular to web member. According to the field condition, the actual lofting size of the purlin support is determined, and the purlin support is fixed on the net rack or the truss according to the connection mode of the design requirement. And after the purlin support is installed, checking and rechecking the installation angle and the elevation of the purlin support, and after the requirements are met, installing the purlin support in a purlin system.
S4, mounting a purline system: the primary purlins are installed first, and the secondary purlins are installed later. The main purline of the roof is connected with the purline support through screws. The installation of main purlin is on a parallel with roofing drainage direction, fixes main purlin on the purlin that has installed holds in the palm.
Furthermore, during installation, a theodolite is used for emitting a purlin positioning control line on an installed net rack or truss structure, marks are made on the net rack or truss rod piece according to the positioning line, a main purlin is fixed on a purlin support according to the marked position, the position is adjusted by using a gasket, then a secondary purlin is installed, the condition that the top surface of the purlin is on the slope surface line of the roof after installation is guaranteed, and the position deviation is controlled within 5 mm.
Furthermore, the purlines are installed strictly according to a construction scheme, and the construction quality of the purlines meets the requirements of acceptance standards. During installation, operating personnel are matched with measuring personnel to further inspect and verify the installation position and the elevation of the purline, and purlines and purline supports with deviation need to be adjusted in time and a processing scheme is reported, managed and put on record.
S5, gutter installation: the gutter part needs to be completed before the roof boarding is installed, and the gutter is usually arranged around a roof cornice or at a high-low span part, and the material specification is generally 2.0mm thick stainless steel. Before the installation, the stainless steel gutter splicing piece is processed according to the design drawing size, the stainless steel water tank is hoisted to the installation operation face, and is put on the purline according to the design elevation, and is fixed with the purline after the position is adjusted, the upper and lower edges of the gutter are required to be smooth, the uneven part needs to be filled up with fillers such as angle iron, and the error is not more than 6mm.
Furthermore, the connection mode between two sections of gutter usually adopts argon arc welding. During welding, spot welding is carried out at intervals of 100mm, and formal welding can be carried out after the welding requirements are met.
S6, installing a bottom-layer profiled steel sheet: before the bottom plate is installed, the installation datum line of a first row of plates is measured and released on the installed purlines by a level gauge and a theodolite, on the basis of the installation datum line, every twenty plate widths form a group, and the bottom plate installation measurement and control net is measured and released at the whole installation position of the roof. After the first contour plate is fixed in place, two continuous alignment lines are respectively pulled at the plate end and the plate top, and the two lines and the first plate become marking lines, so that the subsequent contour plate can be quickly fixed.
Furthermore, during installation, the profiled steel sheet is positioned on the roof purline by self-tapping screws, connecting points between the profiled steel sheet and the steel purline are encrypted by shooting nails after positioning, and at least one steel nail is driven into each wave trough of the profiled steel sheet. In order to enhance the tensile strength between the steel purlines and the profiled steel sheets, a lock seaming nail is arranged at intervals of 250mm along the plate length direction, so that the bottom profiled plates can be connected into an independent whole after being installed. And the connection length between the adjacent plates is not less than 120mm.
Furthermore, the bottom layer profiled steel sheet is required to be inspected in sections after being installed in a certain area, the width of the fixed profiled sheet is measured according to a datum line, the top and the bottom of the profiled sheet are measured once respectively, and the installation straightness of the bottom plate is judged so as to ensure that the bottom plate is not moved and is not fan-shaped.
S7, mounting a roof panel fixing support: firstly, a theodolite is used for guiding an axis to an operation surface to be used as a longitudinal control line for mounting the aluminum alloy support, and the mounting point position of the support is measured out so as to improve the accuracy of control and mounting,
furthermore, self-tapping screws are directly fixed on the purlines in the support mounting process, and 4 screws are mounted on each support. When the roof boarding device is installed, a self-tapping screw is firstly driven in, then the support is corrected, errors are adjusted, the installation direction of the end head of the support is finely adjusted, and the direction of the end head of the support is consistent with the direction of the roof boarding. After the correction is finished, other screws are driven to firmly fix the screw.
Furthermore, the mounting distance and the positions of the supports are arranged according to an optimized design drawing, the longitudinal distance is not less than 3 wave distances of the profiled steel sheet and corresponds to the roof panel so as to be meshed with the inner ribs and the central ribs of the roof panel.
Furthermore, the installation gradient of the support should be smooth and smooth, and parallel with the roof boarding, and after the installation, the fastening degree of screw should be controlled well, and the nail sinking or floating is avoided appearing.
Furthermore, the position and the elevation of the support are strictly controlled during installation, if the installation error is large, the adjustment is carried out in time, the influence on free expansion and contraction of the roof panel after the undercut of the subsequent roof panel is avoided, and the quality problem that the roof panel ribs are worn through at the support due to installation deviation is avoided.
Furthermore, each row of supports should be checked once in the installation process, and if a large error is found, the supports with errors should be adjusted until the requirements are met.
Furthermore, a heat insulation device at the lower part of the support seat is installed in advance before the support seat is installed, and a heat insulation pad is usually adopted, so that the cold bridge phenomenon of a heat insulation roof is prevented, the formation of condensed water is avoided, and the effects of energy conservation and consumption reduction are achieved.
S8, installing a heat-preservation sound-insulation plate: the heat insulation material is generally a flame-retardant inorganic substance and has good sound insulation, heat preservation and fire prevention functions. After a working surface is formed by installing a certain area on the roof bottom plate, the insulation plates can be installed according to the subareas.
Further, whether sundries exist on the bottom plate which is paved or not is checked and cleaned, and after the bottom plate is cleaned up, the heat-insulation plate can be paved. If the heat-insulating sound-absorbing material with the aluminum foil is installed, the surface with the aluminum foil is downward, and the aluminum foil needs to be paved fully.
Furthermore, when the upper layer and the lower layer of the heat-insulating material are staggeredly paved, the lap joint length is not less than 100mm, the gaps are tightly squeezed, the corner parts are fully filled, and the appearance is kept intact. The heat insulation material is fully attached to the roof panel, and an air space between the heat insulation material and the roof panel cannot be formed, so that impact sound of rainwater on a roof is reduced when raining, meanwhile, air in the middle of a roof structure layer is prevented from flowing, and the heat insulation effect of the roof is ensured.
S9, laying a waterproof breathable film: when laying the waterproof ventilated membrane, can be according to actual conditions, select the mode of laying, fix waterproof ventilated membrane and heated board with the rock wool nail usually, lay with insulation material in step, pierce through waterproof ventilated membrane department at aluminum alloy support, rock wool nail and seal with the butyl sticky tape, the sealed area size uses the butyl sticky tape to cover the pin fin completely as the standard.
Furthermore, the laying of the waterproof breathable film is carried out along the drainage direction of the roof, and the length and the width of the lap joint are not less than 100mm.
Further, when the aluminum alloy support passes through the waterproof breathable film, the joint of the aluminum alloy support and the waterproof breathable film is sealed by encircling a circle by using a butyl adhesive tape.
Furthermore, the waterproof breathable film is not suitable for being exposed to ultraviolet rays for a long time, and the roof panel is installed in the laid waterproof breathable film area as soon as possible.
Furthermore, the waterproof breathable film is selected according to the requirements of the breathable film meeting the national relevant regulation requirements. In the construction process, management and control on constructors, engineering materials, environmental protection and mechanical safety use are enhanced, and the construction time and the construction sequence of each area are reasonably arranged.
Furthermore, the waterproof and breathable film is required to avoid open fire operation nearby during construction.
S10, mounting a laminated plate on the roof: the method comprises the steps of laying metal roof boards above a T-shaped support, adjusting the mounting position, occluding the two boards at the top ends of the boards by using a manual occlusion machine, checking whether deviation exists at the manual occlusion part after work is finished, and finally performing occlusion and edge locking on rib edges adjacent to the two roof boards by using a special electric occlusion machine.
Furthermore, when the upper layer roof panels are arranged, attention should be paid to the meshing direction of the interfaces of the adjacent panels, the direction of the interfaces of the roof panels must be determined according to the local maximum frequency wind direction, and the meshing direction of the interfaces is consistent with the maximum frequency wind direction.
Furthermore, the seam locking edge of the pressed metal plate is tight, continuous and flat without distortion and cracks.
Further, when the roof is a multi-dimensional curved surface, rainwater may cross the rib height and cross flow of the roof panel, and in this case, the meshing direction of adjacent panels should be along the water flow direction when the roof panel is arranged.
Furthermore, the metal roof plate should be laid smoothly and straightly, and the drainage gradient should meet the design requirements.
S11, ridge node processing: and a ridge cover plate is adopted to process the ridge. The installation direction of the roof ridge is vertical to the direction of the roof color steel plate. The ridge cover plate is fixed by adopting a rivet. Waterproof treatment is carried out at the fixed position, and the waterproof is carried out according to three layers of waterproof coating films and one layer of waterproof cloth.
And further, performing waterproof treatment on the end of the roof panel. The edge of the plate is bent upwards by a folding angle of about 80 degrees at the high position of the end of the roof plate to form a water baffle, a high-position sealing strip is installed to form double water resistance, and then a flashing plate and a ridge cover plate are installed at the upper part of the water baffle to ensure that rainwater cannot enter along the plate end.
Furthermore, the self-tapping screws used for fastening and connecting the metal ridge cover plate and the roof panel are provided with waterproof gaskets, the fixing points are arranged on wave crests of the metal ridge cover plate, and all exposed parts of the self-tapping screws are subjected to sealing treatment.
Furthermore, the metal ridge cover plate should be lapped correctly, the sealing and fixing should be tight, and the flat ridge and the inclined ridge cover plate should be laid smoothly and straightly without fluctuation.
S12, closing up treatment and roof system acceptance inspection: the roof binding off mainly refers to the treatment of roof boards and roof ditches, drainage, cornice boards and other details. And at the gutter and the low position, the plate end is bent downwards by 10 degrees to form a slope-shaped water dripping line, and then a low-position sealing strip and an aluminum alloy water dripping device are installed to block rainwater from entering a channel.
Furthermore, the total length of the metal roof board penetrating into the gutter is not less than 12.5cm; the top end of the lower opening of the roof is provided with a through-length alloy water dripping device, and a sealing strip with the same shape and size as the roof panel is fixed between the roof panel and the water dripping device, so that the roof panel is prevented from being invaded by strong wind and is prevented from being soaked by rainwater.
Further, after the roof is closed, the roof system is checked and accepted according to the roof engineering quality acceptance standard and the metal roof plate engineering quality acceptance standard.
The core of the technical characteristic of the invention is 'one-front and three-control'. "A preponderance" means: the post-installation procedure of the gutter in the traditional roof construction is advanced to the installation after the purline system is completed; "Tri-control" means: the method is characterized in that the procedures of roof panel interface occlusion direction, waterproof film reinforcement and node detail processing are used as key clamping control procedures, and detail practice is optimized.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed.
Claims (9)
1. The utility model provides a double-deck plate metal roofing antiseep mounting process which characterized in that: the mounting process comprises the following steps:
s1, roof steel structure inspection: before the metal roof system is installed, the existing structural members on the steel structure net rack, the steel truss axis position, the elevation and the installation plane are retested, the parts which do not meet the design requirements of the drawing are recorded, corresponding processing measures are provided, and the parts are corrected in time;
s2, measuring and setting out and positioning: determining the position of a typesetting initial line according to the typesetting design of each structural layer of the roof; marking the initial point of typesetting on the net rack and the upper chord of the truss along the span direction of the roof in the construction, applying ink line identification to the initial point, and sequentially measuring the installation positions of purlins, gutters, roof panel supports, roof panels and other components, wherein the connecting line of each point is vertical to the longitudinal axis of the building;
s3, purlin support installation: the actual installation position of the purlin support is determined according to design requirements and by combining field conditions, the purlin support at the roof panel is perpendicular to the upper chord, and the purlin support at the cornice is perpendicular to the web member and meets the requirement of roof drainage gradient when being installed; after the purlin supports are installed, checking and rechecking the installation angles and the elevations of the purlin supports, and after the requirements are met, installing a purlin system;
s4, mounting a purline system: firstly, mounting a main purline, and then mounting a secondary purline; the main purline of the roof is connected with the purline support through a screw; the installation of the main purlines is parallel to the drainage direction of the net rack or the truss roof, the main purlines are fixed on the purline supporting plate in regions, and the secondary purlines are installed according to the designed interval after the main purlines are fixed;
s5, gutter installation: the gutter is generally arranged at the eave of the roof or the high-low span joint part, and the gutter is installed according to the designed position after the installation of the purlines of the roof is finished, so that the reference is provided for the subsequent operation of the roof;
s6, installing a bottom-layer profiled steel sheet: before the bottom layer plate is installed, according to a datum line measured and released on a purline in advance, every twenty plate widths form a group, and a whole roof panel installation position measurement and control network is subdivided; after the first contour plate is fixed in place, respectively pulling a continuous datum line at the bottom end of the plate and the top of the plate to provide a basis for quickly fixing the subsequent contour plate; the profiling bottom plate is connected with the secondary purlins through self-tapping screws, the distance between the self-tapping screws is the width of the bottom plate in the transverse direction and the distance between the secondary purlins in the longitudinal direction, and the self-tapping screws are connected with the purlins at the trough positions;
s7, mounting a roof panel fixing support: according to the measured reference line and the support layout drawing, a theodolite is used for measuring and releasing a mounting point position to an operation surface to serve as a basis for mounting the T-shaped aluminum alloy support; the support is fixed by self-tapping screws directly on the purlines, and the mounting distance and the position of the support correspond to the roof panel so as to be meshed with the inner ribs and the central ribs of the roof panel correctly;
s8, installing a heat preservation sound insulation plate: the heat-insulating and sound-insulating material is a non-combustible inorganic substance and has good sound-insulating, heat-insulating and fireproof functions, and the heat-insulating boards are inserted into the floor of the roof according to partitions after finishing a certain working surface; when the heat-insulating sound-absorbing material with the aluminum foil is installed, the surface with the aluminum foil faces downwards, the heat-insulating material is paved fully when the heat-insulating sound-absorbing material is paved, and the pavement is tight;
s9, laying a waterproof breathable film: when the waterproof breathable film is laid, a laying mode is selected according to the actual situation on site, the waterproof breathable film and the heat-insulation board are fixed by using rock wool nails, the rock wool nails at the fixed positions are sealed by using butyl adhesive tapes, and the area of the sealed positions is based on the standard that the nail heads are completely covered by the butyl adhesive tapes;
s10, installing a roof laminated plate: generally, a roof upper plate is generally designed into an aluminum-magnesium-manganese roof plate, the roof plate is firstly laid above a T-shaped aluminum alloy support during installation, then the installation position is adjusted, finally, a serging machine is used for occluding the two roof plates at the top ends of the roof plates, after the operation is finished, whether errors exist in manual occlusion positions is checked, and finally, a special electric occlusion machine is used for carrying out occlusion and serging on rib edges adjacent to the two roof plates;
s11, ridge node processing: the ridge nodes are covered and closed by ridge cover plates; the mounting direction of the roof ridge is vertical to the direction of the roof color steel plate; the ridge cover plate is fixed by a rivet; waterproof treatment is carried out at the fixed position, and the waterproof treatment is carried out according to three layers of waterproof coating films and one layer of waterproof cloth;
s12, closing up treatment and roof system acceptance: the roof binding off mainly refers to the treatment of roof panels and details of gutter, drainage port, cornice aluminum plate and the like of a building; the total length of the metal roof board penetrating into the gutter is not less than 125mm; a through-length aluminum alloy water dripping device is arranged at the top end of the lower opening of the roof, and a sealing strip with the same shape and size as the roof panel is fixed between the roof panel and the aluminum alloy water dripping device, so that the roof panel is prevented from being invaded by strong wind and being soaked by rainwater; and after the construction of the roof edge closing and closing is finished, checking and accepting the whole roof system.
2. The anti-leakage installation process for the double-layer plate metal roof, according to claim 1, is characterized in that: and S4, discharging a purlin positioning control line on the installed net rack or truss structure by using a theodolite during installation, marking the net rack or truss rod piece according to the positioning line, fixing a main purlin on a purlin support according to the marked position, adjusting the position by using a gasket, installing a secondary purlin, and ensuring that the top surface of the mounted purlin is on the slope surface line of the roof and the position deviation is controlled within 5 mm.
3. The double-deck plate metal roofing antiseep installation process of claim 1, wherein: s5, before the gutter is installed, machining a stainless steel gutter splicing piece according to the size of a design drawing, hoisting a stainless steel water tank to an installation operation surface, placing the stainless steel water tank on a purline according to a design elevation, adjusting the position of the stainless steel gutter splicing piece, fixing the stainless steel gutter splicing piece and the purline, and requiring that the upper and lower edges of the gutter are smooth, the uneven part needs to be filled with filler such as angle iron and the like, and the error is not more than 6mm; the connection mode between two sections of gutter usually adopts argon arc welding; during welding, spot welding is carried out at intervals of 100mm, and formal welding can be carried out after the welding requirements are met.
4. The anti-leakage installation process for the double-layer plate metal roof, according to claim 1, is characterized in that: s6, positioning the profiled steel sheet on the roof purline by adopting self-tapping screws when the bottom profiled steel sheet is installed, and compacting the connecting points between the profiled steel sheet and the steel purline by shooting nails after positioning, wherein at least one steel nail is driven into each wave trough of the profiled steel sheet; in order to enhance the tensile strength between the steel purlines and the profiled steel sheets, a lock seaming nail is arranged at intervals of 250mm along the plate length direction, so that the bottom profiled plates can be connected into an independent whole after being installed; and the connection length between the adjacent plates is not less than 120mm; and (3) carrying out sectional inspection after the bottom profiled steel sheet is installed in a certain area, measuring the width of the fixed profiled sheet according to a datum line, measuring the width of the profiled sheet at the top and the bottom of the profiled sheet once respectively, and judging the installation straightness of the bottom plate so as to ensure that the bottom plate is not moved and is in a fan shape.
5. The double-deck plate metal roofing antiseep installation process of claim 1, wherein: s7, when the support is installed, firstly, a self-tapping screw is driven in, then the support is corrected, errors are adjusted, and the installation direction of the end of the support is finely adjusted to be consistent with the direction of the roof panel; after the correction is finished, other screws are driven to firmly fix the screw.
6. The double-deck plate metal roofing antiseep installation process of claim 1, wherein: s8, when the upper layer and the lower layer of the heat-insulating material are subjected to staggered joint laying, the lap joint length is not less than 100mm, the gaps are tightly squeezed, corner parts are fully filled, and the appearance is kept intact; the heat insulation material is fully attached to the roof panel, and an air space between the heat insulation material and the roof panel cannot be formed, so that impact sound of rainwater on a roof is reduced when raining, meanwhile, air in the middle of a roof structure layer is prevented from flowing, and the heat insulation effect of the roof is ensured.
7. The anti-leakage installation process for the double-layer plate metal roof, according to claim 1, is characterized in that: and S9, constructing the waterproof breathable film along the drainage direction of the roof, wherein the length and the width of the lap joint are not less than 100mm.
8. The double-deck plate metal roofing antiseep installation process of claim 1, wherein: in S10, when the upper layer roof panels are arranged, attention should be paid to the meshing direction of the interfaces of the adjacent panels, the direction of the interfaces of the roof panels must be determined according to the local maximum frequency wind direction, and the meshing direction of the interfaces is consistent with the maximum frequency wind direction.
9. The anti-leakage installation process for the double-layer plate metal roof, according to claim 1, is characterized in that: and S11, bending the plate edges upwards by a folding angle of about 80 degrees at the high position of the end of the roof plate to form a water baffle, installing a high-position sealing strip to form double water resistance, and then installing a flashing plate and a ridge cover plate on the upper part to ensure that rainwater cannot enter along the plate end to form water-proof treatment of the end of the roof plate.
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