CN111576747A

CN111576747A - Double-layer metal roof construction process

Info

Publication number: CN111576747A
Application number: CN202010311090.1A
Authority: CN
Inventors: 王晓杰; 徐艺; 刘守祥
Original assignee: China Railway Construction Engineering Group Co Ltd
Current assignee: China Railway Construction Engineering Group Co Ltd
Priority date: 2020-04-20
Filing date: 2020-04-20
Publication date: 2020-08-25

Abstract

The invention belongs to the technical field of roof construction, and particularly relates to a double-layer metal roof construction process, which comprises the following steps: firstly, a theodolite is used for measuring and releasing a plurality of points on a panel mounting control line, the point location distance is suitable for mutual communication, then the theodolite is erected on a known control point, and a panel support control line is popped up; after the control line is measured, two rechecking lines are measured and expanded, and when the panel bracket in the straight panel area is constructed, in order to reduce the measurement workload, the control line is taken as a reference, and the position of each row of panel brackets is determined by using a special scale; the construction of the double-layer metal roof with the 5-8-axis aluminum-magnesium-manganese plate and the perforated aluminum plate is adopted, so that the 5-8-axis high-bay roof (lobby) and the low-bay roof are perfectly combined, the overall visual effect is obviously improved, the expected effect is achieved, the construction of the double-layer metal roof is deeply known about the related requirements of an FM authentication system, the precious experience is accumulated, and a solid foundation is laid for the construction of the metal roof under the FM authentication in the future.

Description

Double-layer metal roof construction process

Technical Field

The invention belongs to the technical field of roof construction, and particularly relates to a double-layer metal roof construction process.

Background

Delivery center roofing system divide into two, roofing aluminum curtain wall system and standing-seam crimping roofing system: roofing aluminum curtain wall system is frame aluminum plate curtain wall, and roof inner circle escape canal inboard is the aluminum plate roofing structure of cracking, and escape canal to eaves mouth within range is sealed aluminum plate roofing structure. The close-seam panel of the system is made of an aluminum single plate with the thickness of 4mm, the seam system is made of a perforated aluminum plate, and the range is detailed in a roof plan view. The main keel of the roof steel frame is hot-galvanized square steel with the thickness of 160 multiplied by 80 multiplied by 5mm, the secondary keel is hot-galvanized square steel with the thickness of 50 multiplied by 3mm, and the transverse glue joint width of the close-joint aluminum plate is 15 mm. Standing-seam roofing system: a roof system (5-8 shafts) above a hall is characterized in that a roof plate is an aluminum-magnesium-manganese alloy roof, a 4mm perforated aluminum single plate is arranged above the roof system, and a 60X 40X 4mm hot-galvanized square steel keel (all steel products are Q235B in model) is selected as a purlin.

Because the 5-8 shaft high bay area aluminum magnesium manganese plate roof (lobby) and the low bay area perforated aluminum plate roof are not at the same height and the two roofs have poor appearances, the high bay area tries to use the aluminum magnesium manganese plate and the perforated aluminum plate double-layer metal roof.

Therefore, the person skilled in the art proposes a double-layer metal roof construction process to solve the problems mentioned in the above background.

Disclosure of Invention

To solve the problems set forth in the background art described above. The invention provides a construction process of a double-layer metal roof, which has the characteristics of convenience in installation, simplicity in operation, good appearance effect and strong attractiveness, and the double-layer metal roof is positioned at the same height after being installed.

In order to achieve the purpose, the invention provides the following technical scheme: a construction process of a double-layer metal roof comprises the following steps:

s1, mounting a panel support:

s1.1, paying off: firstly, a theodolite is used for measuring and releasing a plurality of points on a panel mounting control line, the point location distance is suitable for mutual communication, then the theodolite is erected on a known control point, and a panel support control line is popped up; measuring and releasing two rechecking lines after the control line is measured, and when the panel bracket in the straight panel area is constructed, in order to reduce the measurement workload, taking the control line as a reference, determining the position of each row of panel brackets by using a special scale;

s1.2, fixing a panel bracket: installing a hexagonal sleeve on an electric drill head, sleeving a screw, aligning a panel support to the installation position of the panel support, driving a self-tapping screw, wherein the screw and the electric drill are required to be perpendicular to the upper surface of the purlin during installation, pulling an electric switch to stop halfway, and stopping drilling quickly after the screw is in place; at this time, the panel bracket position deviates a little, the positioning position of the panel bracket needs to be checked again, and the self-tapping screw on the other side can be driven in;

s1.3, rechecking the position of the panel bracket: whether each row of panel supports are on the same straight line or not is checked by a visual inspection method, if a panel support with larger deviation is found, the panel support is corrected before the roof panel is installed until the requirement of panel installation is met;

s2, panel installation:

s2.1, paying off: after the panel bracket is checked, a panel mounting positioning line can be placed under the condition that the mounting quality is strictly controlled, and the distance of the panel from a gutter is generally taken as a control line;

s2.2, positioning: the constructor lifts the plate to the mounting position, firstly checks whether the small edge of the previous plate is completely buckled into the fixed seat, puts the plate in place after no mistake is made, firstly controls the plate end control line when in place, and then presses the lapping edge of the previous plate with force;

s2.3, construction of fixed points of the plate: in order to extend and contract in a preset direction when the roof panel expands with heat and contracts with cold, a fixed point needs to be arranged when the metal roof is installed, and meanwhile, in view of the fact that the roof panel is long in length and the roof is in a radian, the fixed point also needs to be arranged for preventing the roof panel from sliding;

s2.4, serging: after the position of the panel is adjusted, installing a foam plastic seal strip below the panel at the end part, and then carrying out overlocking; the edge locking is continuous and smooth, and no distortion or crack can be generated; in the advancing process of the overlock machine, the overlap edge is tightly jointed by force within 1m in front of the overlock machine;

s2.5, trimming plate edges: trimming edges of the eaves and the gutter, and ensuring that the length of the roof panel extending into the gutter is not less than the standard specified size after trimming, so that rainwater can be effectively prevented from blowing into the roof interlayer under the action of wind;

s3, mounting a perforated aluminum plate: construction preparation: the central line of the glue joint of the aluminum plate is measured on the steel keel before installation so as to control the installation position, the plate is required to be inspected seriously before installation, the installation direction and the position are clearly distinguished, the aluminum plate is pre-installed to fix the angle code, the installation is required to be firm and not to be loosened, the installation is not leaked, the fixed angle code is fastened with the main keel and the secondary keel by adopting stainless steel self-tapping fastening screws, the number of the self-tapping screws cannot be leaked or randomly reduced, and the size of the gap between adjacent plates is required to be adjusted seriously before the fixation after the installation, so that the gap between the adjacent plates meets the design requirement, and the gap is horizontal, vertical and;

s3.1, installing an adapter: the perforated aluminum plate is connected with the aluminum-magnesium-manganese plate roof wind-resistant clamp through an L50x50x4 hot-galvanized angle steel adapter, and the adapter is connected with the wind-resistant clamp through an M8x40 bolt;

s3.2, installing a main keel: the main roof keel and the L50x50x4 hot-dip galvanized angle steel adaptor are welded and fixed, the secondary keel is welded and fixed on the main keel according to the grid typesetting, the grids of the secondary keel are strictly controlled, the installation of the aluminum alloy adapting section bar is directly influenced, and all welding seams are subjected to rust prevention treatment;

preferably, in step S1.1, the position of the panel bracket along the plate length direction is ensured at the center of the top surface of the purlin, and the number of rows of the panel bracket along the plate length direction is strictly arranged according to the design drawing (the number of the panel brackets determines the wind resistance of the roof plate).

Preferably, in step S1.2, the panel bracket is fixed by a self-tapping screw, the self-tapping screw must be provided with an anti-aging sealing ring, and the rotation speed of the electric drill should be 2000-2500 rpm.

Preferably, in step S1.3, if a large deviation occurs in the panel support, after the roof panel is installed and undercut, the roof panel will be affected to freely stretch, and in severe cases, the panel ribs will wear through under the repeated action of temperature.

Preferably, in step S2.1, the roof panel has a length of 30m and the roof panel has a length of 30+15+30+25 to 100 mm.

Preferably, in step S2.2, it is checked whether the overlapping edge can be tightly joined, if not, a problem should be identified and dealt with early.

Preferably, in step S2.3, the set point is related to roof panel length, roof slope, panel width and roof load.

Preferably, in step S2.4, the quality of the lockstitching is critical in that: whether the overlapping edges are tightly jointed by strong force in the overlocking process (the overlocking of the panel in place in the same day is required to be completed, and the panel cannot be blown or scraped away at night), when the thickness of the panel material is 0.9-1.2mm, the diameter of the overlocking is 21, and the instrument used by the panel lock is a special overlocking machine.

Compared with the prior art, the invention has the beneficial effects that:

according to the invention, the 5-8-axis aluminum magnesium manganese plate and the perforated aluminum plate double-layer metal roof are adopted for construction, so that the 5-8-axis high-bay roof (lobby) and the low-bay roof are perfectly combined, the overall visual effect is obviously improved, the expected effect is achieved, the related requirements of an FM authentication system are deeply known through the construction of the double-layer metal roof, the precious experience is accumulated, and a solid foundation is laid for the construction of the metal roof under the FM authentication in the future.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic plan view of the roof of the present invention;

FIG. 2 is a schematic view of the mounting of the stand of the present invention;

FIG. 3 is a schematic view of the installation of the roof panel of the present invention;

FIG. 4 is a schematic view of an installation object of the fixing support of the present invention;

FIG. 5 is a schematic view of a control standard of a mounting error of a stand according to the present invention;

FIG. 6 is a schematic view showing a state after the mounting of the stand according to the present invention is completed;

FIG. 7 is a schematic view of a pay-off method according to the present invention;

fig. 8 is another schematic view of the installation of the roof panel of the present invention;

FIG. 9 is a schematic representation of a real object of the roof panel of the present invention;

fig. 10 is a schematic view of the fixing points of the roof panel according to the invention;

FIG. 11 is a schematic view of a fixed point drilling condition in the present invention;

FIG. 12 is a schematic view of the fixing point of the present invention after completion of construction

FIG. 13 is a schematic view of a perforated aluminum roof panel node according to the present invention;

fig. 14 is a schematic view showing the completion of installation in 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.

Example 1

Referring to fig. 1-14, the present invention provides the following technical solutions: a construction process of a double-layer metal roof comprises the following steps:

s1, mounting a panel support:

s2, panel installation:

specifically, in step S1.1, the positions of the panel brackets along the length direction of the panel are ensured at the center of the top surface of the purline, and the number of rows of the panel brackets along the length direction of the panel is strictly arranged according to the design drawing (the number of the panel brackets determines the wind resistance of the roof panel).

Specifically, in step S1.2, the panel bracket is fixed by a self-tapping screw, which must have an anti-aging seal ring, and the rotation speed of the electric drill should be 2000 rpm.

Specifically, in step S1.3, if a large deviation occurs in the panel support, the roof panel will be affected by free expansion and contraction after the roof panel is installed and undercut, and in severe cases, the panel ribs will wear through under the repeated action of temperature.

Specifically, in step S2.1, the roof panel length is 30m, and the roof panel length extending into the gutter is 100mm, namely 40+15+30+ 15.

In particular, in step S2.2, it is checked whether the overlapping edges can be tightly joined, if not, a problem should be identified and dealt with early.

In particular, in step S2.3, the fixing points are set in relation to roof panel length, roof slope, panel width and roof load.

Specifically, in step S2.4, the quality of the overlocking is critical in that: whether the overlapping edges are tightly jointed by using strong force in the overlocking process (the overlocking of the panel in place in the same day is required to be completed, and the panel cannot be blown or scraped away at night), when the thickness of the panel material is 1mm, the diameter of the overlocking is 21mm, and an instrument used by the panel lock is a special overlocking machine.

Example 2

s1, mounting a panel support:

s2, panel installation:

Specifically, in step S1.2, the panel bracket is fixed by a self-tapping screw, the self-tapping screw must be provided with an anti-aging sealing ring, and the rotation speed of the electric drill should be 2000-2500 rpm.

Specifically, in step S2.1, the roof panel extends into the gutter for a length of 30+15+30+25, which is 100 mm.

Specifically, in step S2.4, the quality of the overlocking is critical in that: whether the overlapping edges are tightly jointed by using strong force in the process of locking the edges or not (the panel in place in the same day needs to be locked to ensure that the panel cannot be blown or scraped away when wind comes at night), when the thickness of the panel material is 0.9mm, the diameter of the locked edges is 20mm, and the instrument used by the panel lock is a special locking machine.

Example 3

s1, mounting a panel support:

s2, panel installation:

Specifically, in step S2.1, the roof panel extends into the gutter by a length of 40+15+30+25 — 110 mm.

Specifically, in step S2.4, the quality of the overlocking is critical in that: whether the overlapping edges are tightly jointed by using strong force in the process of locking the edges or not (the panel in place in the same day needs to be locked to ensure that the panel cannot be blown or scraped away when wind comes at night), when the thickness of the panel material is 1.2mm, the diameter of the locked edges is 22mm, and the instrument used by the panel lock is a special locking machine.

The construction considerations in the present invention are:

(1) the protection measures of the finished products in the transportation process are enhanced, and a reasonable transportation mode is selected according to the length of the plate, so that the phenomena of overlarge deflection, mutual extrusion and the like of the roof plate in the transportation process are prevented.

(2) The installation of the roof support is a key process before the roof panel is installed, the quality installation of the support directly influences whether the roof panel is installed flatly and smoothly, the installation position of each support is firstly set out on a purline according to a design drawing during the installation of the support, the installation angle of the support also needs to be positioned by a total station, and the support is prevented from being deviated, twisted, warped and the like.

(3) Before the roof panel is installed, paying off and arranging the panel at the gutter and the roof, paying off the first panel by using a nylon rope, ensuring that the nylon rope is perpendicular to the ridge (an inspection method, namely the rope and the purline are perpendicular to each other), ensuring that the nylon rope is perpendicular to the ridge (the inspection method, namely the rope and the purline are perpendicular to each other), ensuring that the axis of the roof panel is perpendicular to the axis of the roof, paying off can ensure that the dimension of the roof panel cannot be deformed too much after installation, ensuring the effective dimension of the roof panel and the roof edge locking quality, finding out the position of a middle support according to a line drawn in advance, fixing the middle support on each purline, ensuring that the middle support is positioned on one straight line by using a stay wire rope, putting down the central wave crest of the roof panel to be aligned with the middle support position, nipping the wave crest by using force, then fixing the edge support, (after the edge support is fixed, checking whether a connecting sheet of a fixed seat is, ensuring that the roof panels can slide when the temperature changes), ensuring that the first roof panel is vertical and parallel when being installed, and simultaneously checking that the length of the roof panel entering the ditch meets the design and specification requirements; the installation second roof boarding, the female groove of second board is detained on the public groove of first board, puts down the roof boarding (inspection roofing ditch length of intaking, and is unanimous with first piece assurance, can act as go-between at the eaves mouth, guarantees that the eaves mouth board is on a straight line), steps on with the foot hard and pinches well, at fixed limit support, installs according to same method in proper order, whether the inspection is perpendicular parallel at any time in the installation, and the board on roof boarding laying ridge both sides aligns simultaneously, has the problem in time to adjust.

(4) Protecting and cleaning the metal roof: the components of the metal roof and the like need to be made into protective measures, so that the phenomena of collision deformation, color change, pollution and the like can not occur; the adhesive parts on the surface of the component of the metal roof in construction are removed in time; after the metal roof engineering is installed, a cleaning scheme is formulated and submitted to a proprietor for examination and verification, and the surface of the roof is wiped clean; the neutral cleaning agent is adopted for cleaning the roof, and the neutral cleaning agent can be used after the corrosivity inspection; the neutral detergent is used for timely washing with clear water after cleaning.

The installation process flow of the invention is as follows: the method comprises the following steps of acceptance of the previous procedure → paying off of an ST support → installation of the ST support → installation of an aluminum magnesium manganese plate → installation of a wind-resistant clamp → installation of an adapter → installation of a keel → installation of a perforated aluminum plate.

The invention relates to a construction process flow for mounting a perforated aluminum plate, which comprises the following steps: construction preparation → adaptor installation → main keel installation → secondary keel installation → weld corrosion prevention → concealed acceptance → aluminum plate installation → aluminum plate surface leveling → acceptance.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation. The phrase "comprising a defined element does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A double-layer metal roof construction process is characterized in that: the method comprises the following steps:

s1, mounting a panel support:

s2, panel installation:

s3.2, installing a main keel: the main roof keel and the L50x50x4 hot-dip galvanized steel angle adapter are welded and fixed, the secondary keel is welded and fixed on the main roof keel according to the grid typesetting, the grids of the secondary keel are strictly controlled, the installation of the aluminum alloy adapter section is directly influenced, and all welding seams are subjected to rust prevention treatment.

2. The double-layer metal roof construction process according to claim 1, characterized in that: in step S1.1, the position of the panel bracket along the plate length direction is ensured at the center of the top surface of the purline, and the number of rows of the panel bracket along the plate length direction is strictly arranged according to the design drawing (the number of the panel bracket determines the wind resistance of the roof plate).

3. The double-layer metal roof construction process according to claim 1, characterized in that: in step S1.2, the panel bracket is fixed by a tapping screw, the tapping screw must be provided with an anti-aging sealing ring, and the rotation speed of the electric drill should be 2000-2500 rpm.

4. The double-layer metal roof construction process according to claim 1, characterized in that: in step S1.3, if the panel support has a large deviation, the roof panel will be affected by free expansion after the roof panel is installed and undercut, and in severe cases, the panel ribs will wear through under the repeated action of temperature.

5. The double-layer metal roof construction process according to claim 1, characterized in that: in step S2.1, the principle of determining the length of the panel gutter is: 1/1000+ 15mm of plate length +30 mm of drip sheet width + size allowance C, wherein C is 25mm when mounting in summer and 15mm when constructing in winter, but not less than 100 mm.

6. The double-layer metal roof construction process according to claim 1, characterized in that: in step S2.2 it is checked whether the overlapping edge can be tightly joined, if not, a problem should be identified and dealt with early.

7. The double-layer metal roof construction process according to claim 1, characterized in that: in step S2.3 the fixing points are set in relation to roof panel length, roof slope, panel width and roof load.

8. The double-layer metal roof construction process according to claim 1, characterized in that: in step S2.4, the quality of the lockstitching is critical: whether the overlapping edges are tightly jointed by strong force in the process of locking the edges or not (the panel in place in the same day needs to be locked to ensure that the panel cannot be blown or scraped away when wind comes at night), when the thickness of the panel material is 0.9-1.2mm, the diameter of the locked edges is 21 +/-1 mm, and the instrument used by the panel lock is a special locking machine.