A large-span steel truss metal roofing module for integrated construction and its splicing method

Abstract

This invention provides an integrated construction method for a large-span steel truss metal roofing module. The module comprises a main steel truss, including lower main purlins, a profiled base plate, a vapor barrier, insulating rock wool, a waterproof membrane, upper main purlins, upper layer purlins, and standing seam steel plates. The invention also provides a method for splicing the integrated construction method of the large-span steel truss metal roofing module. This invention ensures waterproofing, seepage resistance, and wind uplift resistance at the joints between metal roofing system modules. Recognizing the potential for installation errors during roof installation, which can lead to difficulties in roof alignment, a new purlin support combined with purlin adjusters is used to achieve accurate roof alignment and facilitate splicing. The profiled base plate, vapor barrier, insulating rock wool, waterproof membrane, standing seam steel plates, and decorative panels of this invention are all arranged in a stepped pattern from low to high. During on-site splicing of the metal roofing modules, splicing can begin from the middle, providing construction workers with ample working space.

Description

Technical Field

[0001] This invention relates to the field of metal roofing system technology, and in particular to an integrated construction method for a large-span steel truss metal roofing module and its splicing. Background Technology

[0002] As the top maintenance structure of large-span spatial structures, metal roofing systems are crucial to the underlying building structure due to their waterproofing, seepage prevention, thermal insulation, and wind resistance capabilities. Currently, metal roofing systems are commonly used in large buildings such as airport terminals, convention centers, and stadiums. There are generally two methods for constructing metal roofing systems on large-span spatial structures: First, after the supporting steel trusses at the column tops are fully constructed, the metal roofing system is assembled layer by layer on top. Second, the steel trusses are divided into sections, and the steel trusses of each section are assembled on the ground, along with the metal roofing above. Then, the steel trusses of each section, along with the metal roofing system above them, are lifted together to the column top, where reinforcement at the section joints and the remaining metal roofing system assembly are completed. The former method has low construction efficiency, long cycle, difficult material transportation, and difficulty in guaranteeing construction quality. This construction method is gradually being reduced. The latter method has high construction efficiency, short cycle, certain guarantee of worker safety, and improved construction quality. This method is widely used in the field of metal roofing system construction. However, this method also has certain problems, namely, the difficulty in assembling the metal roofing system at the partition joints, and the inadequacy of waterproofing, seepage prevention, and wind uplift resistance at the partition joints. In addition, there is also the problem of difficulty in roof shape matching due to construction errors. Summary of the Invention

[0003] To address the aforementioned issues, this invention aims to propose an integrated construction method for large-span steel truss metal roof modules and a splicing method. This method ensures waterproofing, seepage prevention, and wind uplift resistance at the joints between metal roof system modules. Furthermore, considering the potential for installation errors during roof installation, which can lead to difficulties in roof alignment, a new purlin support combined with a purlin adjuster is adopted for the roof system. This achieves accurate roof alignment and facilitates splicing.

[0004] To achieve the above objectives, the technical solution of the present invention is implemented as follows:

[0005] An integrated construction method for a large-span steel truss metal roof module involves a main steel truss, including lower main purlins, a profiled base plate, a vapor barrier, thermal insulation rock wool, a waterproof membrane, upper main purlins, upper sub-purlins, and standing seam steel plates. The lower main purlins are installed on the main steel truss below them and are connected to lower purlin supports via purlin adjusters. The lower purlin supports are installed on the main steel truss. A profiled base plate is laid on top of the lower main purlins, a vapor barrier is laid on the profiled base plate, thermal insulation rock wool is laid on the vapor barrier, and a waterproof membrane is laid on top of the thermal insulation rock wool. The waterproof membrane serves as... The second waterproof layer of the entire roof system; round tube column purlin supports are installed on the lower main purlins, and purlin adjusters identical to those on the lower main purlins are installed on the round tube column purlin supports. The upper main purlins are fixed to the purlin adjusters by channel steel. Connecting plates are installed on the sides of the upper main purlins, and the upper purlins are installed on the upper main purlins through the connecting plates. Wind-resistant clips are installed on the upper purlins, and standing seam steel plates are fixed to the upper purlins by the wind-resistant clips. The standing seam steel plates serve as the first waterproof layer. The profiled base plate, vapor barrier, thermal insulation rock wool, waterproof membrane, and standing seam steel plates are all arranged in a stepped manner from low to high.

[0006] Furthermore, it also includes segmented keels and decorative panels. Rib top clamps are installed on the upright seam steel plates, and keel adjusters are welded on the rib top clamps. U-shaped clamps are installed on the keel adjusters, and the U-shaped clamps are welded to the segmented keels. Decorative panels are installed on the segmented keels, wherein the upright seam steel plates and decorative panels are also stepped.

[0007] Furthermore, the keel adjuster includes a U-shaped clamping plate, a grooved support plate, and a self-weight pin. The U-shaped clamping plate has large-sized holes on its two vertical plates, and small-sized holes on both sides of the vertical plates. The grooved support plate has "ears" with holes on both sides, which are inserted into the large-sized holes to allow the grooved support plate to be adjusted up and down along the U-shaped clamping plate. The self-weight pin is responsible for connecting the U-shaped clamping plate and the grooved support plate. The grooved support plate is welded to the U-shaped clamp on the keel. The internal height of the U-shaped clamping plate is equal to the sum of the thickness of the web of the grooved support plate and the height of the U-shaped clamp.

[0008] Furthermore, the purlin adjuster includes two L-shaped clamping plates. Each L-shaped clamping plate has a through hole in the middle to reserve a slot. The structure adjacent to the slot is a protruding post. A lifting plate is provided between the two L-shaped clamping plates. The lifting plate has a "convex" shaped through hole along its longitudinal direction. The lifting plate is adjusted up and down on the L-shaped clamping plate by being clamped in the "convex" shaped through hole. The lifting plate is welded to the channel steel on the purlin. The height of the L-shaped clamping plate is equal to the sum of the thickness of the lifting plate and the height of the channel steel.

[0009] Furthermore, the lower purlin support is a trestle, and the lower main purlin is bolted to a pair of perforated channel steels at the trestle location. Each perforated channel steel has 2 rows and 2 columns of 4 bolt holes. During installation, ensure that the upper edge of the perforated channel steel is not higher than the upper surface of the lower main purlin. The perforated channel steel is welded to the lifting plate in the purlin adjuster. The lifting plate is fixed to the L-shaped clamping plate by a lifting insert. The thickness of both ends of the "convex" lifting insert is consistent with the height of the groove on the L-shaped clamping plate. When the lifting insert is inserted into the purlin adjuster to connect the L-shaped clamping plate and the lifting plate, the outer edge of the lifting insert is flush with the outer edge of the L-shaped clamping plate. Threaded holes are provided on the protrusions of the L-shaped clamping plate. The baffle is fixed to the L-shaped clamping plate through the threaded holes on the protrusions, thereby ensuring that the insert will not fall off.

[0010] Furthermore, when two profiled base plates are spliced ​​together, the troughs overlap, and self-tapping screws are nailed to the lower main purlin corresponding to the trough. The vapor barrier and thermal insulation rock wool are both flexible materials. During construction, the vapor barrier is laid first, and then the thermal insulation rock wool is laid on top of it. There are two layers of thermal insulation rock wool, and the upper and lower layers of thermal insulation rock wool are laid alternately. When the waterproof membrane is laid, the joints are overlapped. The lower part of the waterproof membrane at the joint is nailed to the bottom profiled base plate with membrane nails, and the upper part of the waterproof membrane is ironed to the lower part of the waterproof membrane with a hot iron.

[0011] Furthermore, the circular tube column purlin support located on the lower main purlin passes through the vapor barrier, thermal insulation rock wool, and waterproof membrane. At the circular tube column purlin support, the vapor barrier, thermal insulation rock wool, and waterproof membrane have openings with a diameter similar to that of the circular tube column. An opening sealing membrane is installed at the opening and is ironed to the waterproof membrane. At the edge of the wrapping, the sealing membrane is firmly fixed to the circular tube of the circular tube column purlin support with steel clamps. The steel clamps consist of two clamp plates, which are connected by bolts. The upper main purlin and the upper layer purlin have different dimensions. When the upper layer purlin is connected to the upper main purlin, the upper surface is kept flush.

[0012] Furthermore, the upper main purlin is also equipped with a round pipe column purlin support. A non-perforated channel steel is welded to the corresponding round pipe column purlin support. During welding, the upper edge of the non-perforated channel steel does not exceed the upper surface of the upper main purlin. The non-perforated channel steel is welded to a purlin adjuster identical to that on the lower main purlin. After the purlin adjuster is installed on the purlin, its L-shaped clamp is welded to the round pipe column purlin support on the lower main purlin. The upper main purlins are connected together by a steel core sleeve. A pair of connecting plates are welded to the side of the upper main purlin, each with bolt holes. The upper purlins are connected by... The connecting plate is bolted to the connecting plate on the upper main purlin. During installation, the upper surfaces of the upper main purlin and the upper layer purlin are kept on the same horizontal plane. The wind-resistant clamps are installed on the upper layer purlins with self-tapping screws. The spacing between the clamps is perpendicular to the ribs of the vertical seam steel plate. At the joint of the vertical seam steel plate, the ribs of the vertical seam steel plate are fastened to the wind-resistant clamps. The seam machine is used to tightly clamp the ribs onto the wind-resistant clamps. Rib top clamps are installed at the ribs of the vertical seam steel plate corresponding to the wind-resistant clamps. The rib top clamps are firmly installed on the ribs with bolts.

[0013] Furthermore, the wind-resistant clamps are installed on the upper main purlin and the upper layer purlin according to the spacing of the upright seam steel plate ribs. The ribs of the upright seam steel plate are respectively fastened to the wind-resistant clamps, and the seam machine is used to tightly clamp the ribs onto the wind-resistant clamps. The profiled base plate is fixed to the lower main purlin with self-tapping screws. The thermal insulation rock wool is fixed to the profiled base plate together with the vapor barrier layer with rock wool nails. The decorative panel is connected to the grid keel by aluminum angle brackets at its upper edge and self-tapping screws. Rubber pads are provided under the aluminum angle brackets.

[0014] To achieve the above objectives, the present invention also provides a method for splicing large-span steel truss metal roof modules for integrated construction, comprising the following steps:

[0015] S1: According to the baseline control line, install the supports for the lower main purlins on the steel truss of the section, install the perforated channel steel and purlin adjusters on the lower main purlins, and weld the purlin adjusters to the supports. When installing the lower main purlins, leave a certain construction width at the joint between the sections. Then, lay the vapor barrier, thermal insulation rock wool, waterproof membrane, upper main purlins, upper purlins, upright seam steel plates, and grid keels in sequence, and finally the decorative panels. Leave a certain construction width at the edge of each layer relative to the previous layer. This construction method is called the "stepped construction method". After the metal roof on the section steel truss is laid, lift it to the design elevation of the column top.

[0016] S2: Complete the welding of the remaining steel truss members at the joint between the sections, and complete the installation and welding of the stirrups, purlin adjusters, lower main purlins and the round tube column purlin supports at the joint. Normally, the two lower main purlins are connected together by steel core sleeves. When there are construction errors and the purlins cannot be fully aligned, first adjust the purlin adjuster on the stirrup to keep the upper surface of the purlin flush. Then weld the purlin adapter of the purlin connector to the end of the purlin. Then connect the purlin adapter together through the round tube. The bottom of the round tube is welded to the support column. The bottom of the support column is welded to the main steel truss through the stirrup.

[0017] S3: Lay the profiled base plate. At the joints between the sections along the direction of the lower main purlin, the profiled base plates are interlocked sequentially, with the crests interlocked together. In the direction perpendicular to the lower main purlin, lay the profiled base plate from one end of the joint between the sections to the other end. If there is no construction error, proceed with normal construction. If there is a construction error, when the profiled base plate reaches the edge of the other end, use a flat strip to connect the two profiled base plates at the crests with self-tapping screws.

[0018] S4: Lay a vapor barrier and thermal insulation rock wool on the profiled base plate at the joint of the partition. The vapor barrier and thermal insulation rock wool are laid at the same time. The upper and lower layers of thermal insulation rock wool are laid alternately, and rock wool nails are driven into the diagonal of the thermal insulation rock wool. The lower part is nailed to the profiled base plate. The waterproof membrane is laid on the top of the thermal insulation rock wool. At the joint of the membrane, the lower part of the membrane is nailed to the bottom profiled base plate with membrane nails. The upper part of the membrane is ironed to the lower part of the membrane with a hot iron.

[0019] S5: When installing the upper main purlins, if there is no construction deviation, the two upper main purlins are connected by steel core sleeves. If there is a construction deviation, first adjust the purlin adjuster to level the upper surface of the purlin, and then use the purlin connector to connect the upper main purlins with the construction deviation together. The upper purlins are installed on the side of the upper main purlins perpendicular to the upper purlins through the connecting plate.

[0020] S6: Install wind-resistant clips and upright seam steel plates on the upper main purlins and upper layer purlins at the partition joints. Lay the upright seam steel plates one by one from the partition edge towards the joint in the direction perpendicular to the ribs of the upright seam steel plates, until the interval in the joint area is less than the width of one upright seam steel plate. The remaining intervals are laid with upright seam steel plates with single-sided ribs. The joints are nailed to the lower main purlins with self-tapping screws and sealed with sealant. Along the ribs of the upright seam steel plates, lay from the partition edge inwards until the distance between the upright seam steel plates is 20 cm. The remaining intervals are laid with flat strips, with the flat strips at the bottom and the upright seam steel plates at the top. The joints are sealed with sealant.

[0021] S7: Install rib top clamps on the upright seam steel plate at the partition joint, and install keel adjusters on the rib top clamps. Install the partition keel on the keel adjusters through U-shaped clamps. When there is no construction deviation in the partition keel construction, use steel core sleeves for butt connection. When there is construction deviation, first adjust the keel adjusters to keep the upper surface of the keel flush, and then use L-shaped connectors to connect the keels with construction errors.

[0022] S8: Install the top decorative panel at the joint of the partition. The size of the decorative panel is processed according to the size of the joint area. Aluminum corner brackets are set at the edge of the decorative panel. The decorative panel is connected to the partition keel below through the aluminum corner brackets.

[0023] Beneficial effects: This invention ensures waterproofing, seepage resistance, and wind uplift resistance at the joints between metal roofing system modules. Furthermore, considering the potential for installation errors during roof installation, which can lead to difficulties in roof alignment, a new purlin support system combined with purlin adjusters is adopted to achieve accurate roof alignment and facilitate splicing. In addition, the profiled base plate, vapor barrier, thermal insulation rock wool, waterproof membrane, standing seam steel plate, and decorative panels of this invention are all arranged in a stepped pattern from low to high, allowing for splicing of metal roofing modules on-site from the middle, providing construction workers with ample working space. Attached Figure Description

[0024] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0025] Figure 1 This is a schematic diagram of the integrated construction of a large-span steel truss metal roof module (two pieces) according to an embodiment of the present invention;

[0026] Figure 2 This is a schematic diagram of the structure in which the lower main purlins of the large-span steel truss metal roof module, as described in an embodiment of the present invention, are installed on the main steel truss.

[0027] Figure 3 This is a schematic diagram of the purlin adjuster structure in the integrated construction large-span steel truss metal roof module according to an embodiment of the present invention;

[0028] Figure 4 This is a schematic diagram of the purlin adapter structure in the large-span steel truss metal roof module for integrated construction as described in an embodiment of the present invention.

[0029] Figure 5 This is a schematic diagram of the integrated construction large-span steel truss metal roof module edge sealing roll and its steel clamp structure as described in an embodiment of the present invention;

[0030] Figure 6 This is a schematic diagram of the installation of the upper main purlin of the large-span steel truss metal roof module with integrated construction as described in an embodiment of the present invention onto the purlin support structure of the circular tube column;

[0031] Figure 7 This is a schematic diagram of the connection structure between the steel core sleeve and purlin of the large-span steel truss metal roof module for integrated construction, as described in an embodiment of the present invention.

[0032] Figure 8 This is a schematic diagram of the upper-level main and secondary purlin connection structure of the large-span steel truss metal roof module for integrated construction as described in an embodiment of the present invention.

[0033] Figure 9 This is a schematic diagram of the wind-resistant clamp and rib-top clamp structure of the large-span steel truss metal roof module for integrated construction as described in an embodiment of the present invention.

[0034] Figure 10 This is a schematic diagram of the structure of the integrated construction of the large-span steel truss metal roof module with segmented keel installed on the purlin adjuster according to an embodiment of the present invention;

[0035] Figure 11 This is a schematic diagram of the integrated construction large-span steel truss metal roof module keel adjuster structure according to an embodiment of the present invention;

[0036] Figure 12 This is a schematic diagram of the upright locking steel plate structure of a single-sided rib of a large-span steel truss metal roof module for integrated construction, as described in an embodiment of the present invention.

[0037] Figure 13 This is a schematic diagram of the structure of the integrated construction of the large-span steel truss metal roof module with segmented keel connection according to an embodiment of the present invention. Detailed Implementation

[0038] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0039] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0040] Example 1

[0041] See Figure 1-13A large-span steel truss metal roofing module for integrated construction involves a main steel truss 0, including lower main purlins 1, profiled base plate 2, vapor barrier 3, thermal insulation rock wool 4, waterproof membrane 5, upper main purlins 6, upper sub-purlins 7, and standing seam steel plates 8. The lower main purlins 1 are installed on the main steel truss 0 below them. The lower main purlins 1 are connected to lower purlin supports 104 via purlin adjusters 108. The lower purlin supports 104 are installed on the main steel truss 0. The profiled base plate 2 is laid on the upper part of the lower main purlins 1. The vapor barrier 3 is laid on the profiled base plate 2. The thermal insulation rock wool 4 is laid on the vapor barrier 3. The waterproof membrane 5 is laid on the thermal insulation rock wool 4. The waterproof membrane 5 serves as the entire waterproof membrane. The second waterproof layer of the roofing system; a round tube column purlin support 101 is installed on the lower main purlin 1, and a purlin adjuster 108, the same as that on the lower main purlin 1, is installed on the round tube column purlin support 101. The upper main purlin 6 is fixed to the purlin adjuster 108 by channel steel. A connecting plate 61 is installed on the side of the upper main purlin 6, and the upper purlin 7 is installed on the upper main purlin 6 by the connecting plate 61. A wind-resistant clamp 81 is installed on the upper purlin 7, and a standing seam steel plate 8 is fixed to the upper purlin 7 by the wind-resistant clamp 81. The standing seam steel plate 8 serves as the first waterproof layer. The profiled base plate 2, vapor barrier 3, thermal insulation rock wool 4, waterproof membrane 5, and standing seam steel plate 8 are all arranged in a stepped shape from low to high.

[0042] This embodiment ensures waterproofing, seepage resistance, and wind uplift resistance at the modular joints of the metal roofing system. Furthermore, considering the potential for installation errors during roof installation, which can lead to difficulties in roof alignment, a new purlin support system combined with purlin adjusters is adopted to achieve accurate roof alignment and facilitate splicing. Additionally, in this embodiment, the profiled base plate, vapor barrier, thermal insulation rock wool, waterproof membrane, standing seam steel plate, and decorative panels are all arranged in a stepped pattern from low to high. This allows for splicing of metal roofing modules on-site from the middle, providing construction workers with ample working space.

[0043] In a specific example, it also includes a dividing keel 9 and a decorative panel 10. A rib top clamp 82 is installed on the upright seam steel plate 8, a keel adjuster 83 is welded on the rib top clamp 82, a U-shaped clamp 84 is installed on the keel adjuster 83, the U-shaped clamp 84 is welded to the dividing keel 9, and the decorative panel 10 is installed on the dividing keel 9. The upright seam steel plate 8 and the decorative panel 10 are also stepped.

[0044] In this embodiment, the height between the dividing keels of two metal roofing modules can be adjusted using a keel adjuster. When there are errors in the construction and installation, the keel adjuster can be adjusted to achieve normal splicing. Similarly, the standing seam steel plates and decorative panels are arranged in a stepped shape from low to high. When splicing metal roofing modules on site, splicing can be done from the middle, providing a friendly working space for construction workers.

[0045] In a specific example, the keel adjuster 83 includes a U-shaped clamping plate 8301, a grooved support plate 8302, and a self-weight pin 8303. The U-shaped clamping plate 8301 has large-sized holes on two vertical plates, and small-sized holes on both sides of the vertical plates. The grooved support plate 8302 has "ears" with holes on both sides. The "ears" are inserted into the large-sized holes to allow the grooved support plate 8302 to be adjusted up and down along the U-shaped clamping plate 8301. The self-weight pin 8303 is responsible for connecting the U-shaped clamping plate 8301 and the grooved support plate 8302. The grooved support plate 8302 is welded to a U-shaped clamp 84 on the keel. The internal height of the U-shaped clamping plate 8301 is equal to the sum of the thickness of the web of the grooved support plate 8302 and the height of the U-shaped clamp 84.

[0046] It should be noted that when installing the keel adjuster on the rib top clamp, firstly, the U-shaped clamping plate in the keel adjuster is welded to the rib top clamp. Secondly, the segmented keels are installed onto the grooved support plate of the keel adjuster via the U-shaped clamp. The required elevation of the segmented keels is achieved by adjusting the vertical position of the grooved support plate. Then, a self-weight pin is inserted into the hole to hold the grooved support plate in place. The two ends of the self-weight pin will naturally droop around the axis under its own weight, preventing the self-weight pin from falling out of the hole of the keel adjuster. During the initial installation, the grooved support plate is installed at the middle height of the U-shaped clamping plate to facilitate subsequent vertical height adjustments. It is important to emphasize that the internal height of the U-shaped clamping plate is equal to the sum of the thickness of the web of the grooved support plate and the height of the U-shaped clamp. The segmented keels in the intersecting directions are connected together using L-shaped connectors. The L-shaped connectors are welded to the segmented keels in one direction and bolted to the segmented keels in the other direction.

[0047] In a specific example, the purlin adjuster 108 includes two L-shaped clamping plates 1081. Each L-shaped clamping plate 1081 has a through hole in the middle for a pre-drilled slot. The structure adjacent to the slot is a protruding post. A lifting plate 1082 is provided between the two L-shaped clamping plates 1081. The lifting plate 1082 has a "convex" shaped through hole along its longitudinal direction. A lifting insert plate 1083 is inserted into the "convex" shaped through hole to allow the lifting plate 1082 to be adjusted up and down on the L-shaped clamping plate 1081. The lifting plate 1082 is welded to the channel steel on the purlin. The height of the L-shaped clamping plate 1081 is equal to the sum of the thickness of the lifting plate 1082 and the height of the channel steel.

[0048] In a specific example, the lower purlin support 104 is a trestle, and the lower main purlin 1 is bolted to a pair of perforated channel steels 105 at the trestle location. Each perforated channel steel 105 has 2 rows and 2 columns of 4 bolt holes. During installation, it is ensured that the upper edge of the perforated channel steel 105 is not higher than the upper surface of the lower main purlin 1. The perforated channel steel 105 is welded to the lifting plate 1082 in the purlin adjuster 108. The lifting plate 1082 is fixed to the L-shaped clamping plate 1081 by the lifting insert plate 1083. The thickness of both ends of the "convex" shaped lifting plate 1083 is consistent with the height of the slot on the L-shaped plate 1081. When the lifting plate 1083 is inserted into the purlin adjuster to connect the L-shaped plate 1081 and the lifting plate 1082, the outer edge of the lifting plate 1083 is flush with the outer edge of the L-shaped plate 1081. The protrusion of the L-shaped plate 1081 is provided with threaded holes, and the baffle 1084 is fixed to the L-shaped plate 1081 through the threaded holes on the protrusion, thereby ensuring that the plate 1083 will not fall off.

[0049] It should be noted that after the purlin adjuster is installed on the purlin, its L-shaped clamp is welded to the trestles on the main steel truss. During the initial installation, the lifting plate is installed at the middle height of the L-shaped clamp to facilitate the later adjustment of the height. During splicing, the purlins are connected together by steel core sleeves. One end of the steel core sleeve is welded to the purlin, and the other end is bolted to the purlin.

[0050] In a specific example, when two profiled base plates 2 are spliced ​​together, the troughs overlap, and self-tapping screws are nailed to the lower main purlin 1 corresponding to the trough. The vapor barrier 3 and the thermal insulation rock wool 4 are both flexible materials. During construction, the vapor barrier 3 is laid first, and then the thermal insulation rock wool 4 is laid on top of it. The thermal insulation rock wool 4 has two layers, and the upper and lower layers of thermal insulation rock wool 4 are laid crosswise. When the waterproof membrane 5 is laid, the joints overlap, and the lower part of the waterproof membrane 5 at the joint is nailed to the bottom profiled base plate 2 with membrane nails. The upper part of the waterproof membrane 5 is ironed to the lower part of the waterproof membrane 5 with a hot iron.

[0051] To ensure the reliability of the profiled base plate connection, self-tapping screws are installed on each trough; two layers of thermal insulation rock wool can ensure the good thermal insulation of the roof system; and waterproof membrane can ensure the good waterproof performance of the second waterproof layer.

[0052] In a specific example, the circular tube column purlin support 101 located on the lower main purlin 1 passes through the vapor barrier 3, the thermal insulation rock wool 4, and the waterproof membrane 5. At the circular tube column purlin support 101, the vapor barrier 3, the thermal insulation rock wool 4, and the waterproof membrane 5 have openings with a diameter similar to that of the circular tube column. To ensure that no water seepage or leakage occurs at the opening, an opening sealing membrane 51 is installed at the opening and is ironed to the waterproof membrane 5. At the edge of the wrapping, the sealing membrane 51 is firmly fixed to the circular tube of the circular tube column purlin support 101 with a steel clamp 102. The steel clamp 102 consists of two clamp plates, which are connected by bolts. The upper main purlin 6 and the upper layer purlin 7 have different dimensions. When the upper layer purlin 7 is connected to the upper main purlin 6, the upper surface is kept flush.

[0053] In a specific example, a round pipe column purlin support 101 is also installed on the upper main purlin 6. A non-perforated channel steel 103 is welded to the corresponding round pipe column purlin support 101. During welding, the upper edge of the non-perforated channel steel 103 does not exceed the upper surface of the upper main purlin 6. The non-perforated channel steel 103 is welded to the same purlin adjuster 108 as the lower main purlin 1. After the purlin adjuster 108 is installed on the purlin, its L-shaped clamping plate 1081 is welded to the round pipe column purlin support 101 on the lower main purlin 1. The upper main purlins are connected together by a steel core sleeve 63. A pair of connecting plates 61 are welded to the side of the upper main purlin 6. Each connecting plate 61 has bolt holes. The layer purlin 7 is connected to the connecting plate 61 on the upper main purlin 6 by connecting plate bolts. During installation, the upper surface of the upper main purlin 6 and the upper layer purlin 7 are kept on the same horizontal plane. The wind-resistant clamp 81 is installed on the upper layer purlin 7 by self-tapping screws. The spacing in the direction perpendicular to the rib of the upright seam steel plate 8 is the spacing between the ribs. At the joint of the upright seam steel plate 8, the rib of the upright seam steel plate 8 is fastened to the wind-resistant clamp 81. In order to ensure the tightness of the fastening, the rib is tightly clamped to the wind-resistant clamp 81 by a seam machine. The rib top clamp 82 is installed at the rib of the upright seam steel plate 8 corresponding to the wind-resistant clamp 81. The rib top clamp 82 is firmly installed on the rib by bolts.

[0054] In a specific example, the wind-resistant clamp 81 is installed on the upper main purlin 6 and the upper purlin 7 according to the spacing of the ribs of the upright seam steel plate 8. The ribs of the upright seam steel plate 8 are respectively fastened to the wind-resistant clamp 81. In order to ensure the water tightness of the first waterproof layer, the ribs are tightly clamped to the wind-resistant clamp 81 using a seam machine. The profiled base plate 2 is fixed to the lower main purlin 1 by self-tapping screws. The thermal insulation rock wool 4 is fixed to the profiled base plate 2 together with the vapor barrier layer 3 by rock wool nails. The decorative panel 10 is connected to the grid keel 9 by aluminum corner brackets at its upper edge and self-tapping screws. Rubber pads are provided under the aluminum corner brackets.

[0055] In summary, this embodiment effectively solves the assembly problem of the metal roofing system at the joints between sections of the steel truss by adopting the "stepped construction method," and effectively solves the problems of thermal insulation, waterproofing, and wind uplift resistance of the metal roofing system at the joints between sections. This embodiment also effectively solves the problem of unreliable connections between different layers of the metal roofing system caused by construction errors. Furthermore, this embodiment sets up a new adjustable structural connection form at special connection locations of the metal roofing system, facilitating the adjustment of the roof height and accurate roof alignment.

[0056] Example 2

[0057] To achieve the above objectives, this embodiment also provides a method for splicing large-span steel truss metal roof modules for integrated construction, including the following steps:

[0058] S1: According to the baseline control line, install the supports for the lower main purlin 1 on the steel truss 0 of the section, install the perforated channel steel 105 and purlin adjuster 108 on the lower main purlin 1, and weld the purlin adjuster 108 to the supports. When installing the lower main purlin 1, leave a certain construction width at the joint between the sections. Then, lay the vapor barrier 3, thermal insulation rock wool 4, waterproof membrane 5, upper main purlin 6, upper purlin 7, upright seam steel plate 8, and dividing keel 9 in sequence. Finally, lay the decorative panel 10. Leave a certain construction width at the edge of each layer relative to the previous layer. This construction method is called the "stepped construction method". After the metal roof on the steel truss 0 of the section is laid, lift it to the design elevation of the column top.

[0059] S2: Complete the welding of the remaining steel truss 0 at the joint between the sections, and complete the installation and welding of the stirrups, purlin adjusters 108, lower main purlins 1 and the round tube column purlin supports 101 on them at the joint. Under normal circumstances, the two lower main purlins 1 are connected together by steel core sleeves 63. When there are construction errors and the purlins cannot be fully aligned, first adjust the purlin adjusters 108 on the stirrups to keep the upper surface of the purlins flush. Then weld the purlin adapters 106 of the purlin connectors to the end of the purlins. Then connect the purlin adapters 106 together through the round tubes. The bottom of the round tubes is welded to the support column 107. The bottom of the support column 107 is welded to the main steel truss 0 through the stirrups.

[0060] S3: Lay the profiled base plate 2. At the joints between the sections along the direction of the lower main purlin 1, the profiled base plates 2 are sequentially interlocked, and the crests are interlocked together when connecting. In the direction perpendicular to the lower main purlin 1, lay the profiled base plate 2 from one end of the joint between the sections to the other end. If there is no construction error, proceed with normal construction. If there is a construction error, when the profiled base plate 2 is laid to the edge of the other end, use a flat strip to connect the two profiled base plates 2 at the crests with self-tapping screws.

[0061] S4: Lay a vapor barrier layer 3 and thermal insulation rock wool 4 on the profiled base plate 2 at the partition joint. The vapor barrier layer 3 and thermal insulation rock wool 4 are laid simultaneously. The thermal insulation rock wool 4 is laid in an alternating pattern, and rock wool nails are driven into the diagonal corners of the thermal insulation rock wool 4. The lower part is nailed to the profiled base plate 2. The waterproof membrane 5 is laid on top of the thermal insulation rock wool 4. At the joint of the membrane, the lower part of the membrane is nailed to the bottom profiled base plate 2 with membrane nails. The upper part of the membrane is ironed to the lower part of the membrane with a hot iron.

[0062] S5: When installing the upper main purlin 6, if there is no construction deviation, the two upper main purlins 6 are connected by the steel core sleeve 63. If there is a construction deviation, first adjust the purlin adjuster 108 to level the upper surface of the purlin, and then use the purlin connector to connect the upper main purlins 6 with the construction deviation together. The upper purlin 7 is installed on the side perpendicular to the upper main purlin 6 through the connecting plate 61.

[0063] S6: Install wind-resistant clips 81 and upright seam steel plates 8 on the upper main purlin 6 and upper layer purlin 7 at the partition joint. Lay the upright seam steel plates 8 one by one from the partition edge to the joint in the direction perpendicular to the ribs of the upright seam steel plates 8 until the interval in the joint area is less than the width of one upright seam steel plate 8. The remaining interval is to be laid with upright seam steel plates 85 with single-sided ribs. The joint is to be nailed to the lower main purlin 1 with self-tapping screws and sealed with sealant. Along the ribs of the upright seam steel plates 85, lay from the partition edge inwards until the distance between the edges of the upright seam steel plates 85 is 20 cm. The remaining interval is to be laid with flat strips. The laying principle is that the flat strips are below and the upright seam steel plates 85 are above. The joint is sealed with sealant.

[0064] S7: Install rib top clamps 82 on the upright seam steel plate 8 at the partition joint, install keel adjusters 83 on the rib top clamps 82, and install the partition keel 9 on the keel adjusters 83 through U-shaped clamps 84; when there is no construction deviation in the construction of the partition keel 9, use steel core sleeves 63 for butt connection; when there is construction deviation, first adjust the keel adjusters 83 to keep the upper surface of the keel flush, and then use L-shaped connectors 91 to connect the keels with construction errors;

[0065] S8: Install the top decorative panel 10 at the joint of the partition. The size of the decorative panel 10 is processed according to the size of the joint area. Aluminum corner brackets are set at the edge of the decorative panel 10. The decorative panel 10 is connected to the partition keel 9 below it through the aluminum corner brackets.

[0066] The splicing method of the integrated construction large-span steel truss metal roof module in this embodiment has the same advantages as the integrated construction large-span steel truss metal roof module compared with the prior art, and will not be repeated here.

[0067] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A metal roofing module for a large-span steel truss with integrated construction, characterized in that, The structure includes a lower main purlin (1), a profiled base plate (2), a vapor barrier (3), insulating rock wool (4), a waterproof membrane (5), an upper main purlin (6), an upper layer purlin (7), and a standing seam steel plate (8). The lower main purlin (1) is installed on the main steel truss (0) below it. The lower main purlin (1) is connected to the lower purlin support (104) through a purlin adjuster (108). The lower purlin support (104) is installed on the main steel truss (0). A profiled base plate (2) is laid on the upper part of the lower main purlin (1). 2) A vapor barrier layer (3) is laid on top, and thermal insulation rock wool (4) is laid on top of the vapor barrier layer (3). A waterproof membrane (5) is laid on top of the thermal insulation rock wool (4). The waterproof membrane (5) serves as the second waterproof layer of the entire roof system. A round tube column purlin bracket (101) is installed on the lower main purlin (1). A purlin adjuster (108) identical to that on the lower main purlin (1) is installed on the round tube column purlin bracket (101). The upper main purlin (6) is fixed to the purlin adjuster (108) by channel steel. A connecting plate (61) is installed on the side of the upper main purlin (6). The secondary purlin (7) is installed on the upper main purlin (6) through the connecting plate (61); wind-resistant clips (81) are installed on the upper purlin (7), and the upright locking steel plate (8) is fixed on the upper purlin (7) through the wind-resistant clips (81). The upright locking steel plate (8) serves as the first waterproof layer. The profiled base plate (2), vapor barrier (3), thermal insulation rock wool (4), waterproof membrane (5), and upright locking steel plate (8) are arranged in a stepped manner from low to high. The purlin adjuster (108) includes two L-shaped clamping plates (1081). (1081) A slot is reserved in the middle of the opening, and the structure adjacent to the slot is a convex column. A lifting plate (1082) is provided in the middle of the two L-shaped plates (1081). The lifting plate (1082) has a "convex" shaped through hole along the longitudinal direction. The lifting plate (1083) is inserted into the "convex" shaped through hole to realize the up and down adjustment of the lifting plate (1082) on the L-shaped plate (1081). The lifting plate (1082) is welded to the channel steel on the purlin. The height of the L-shaped plate (1081) is equal to the sum of the thickness of the lifting plate (1082) and the height of the channel steel.The lower purlin support (104) is a trestle. The lower main purlin (1) is bolted to a pair of perforated channel steels (105) at the trest. Each perforated channel steel (105) has 2 rows and 2 columns of 4 bolt holes. During installation, ensure that the upper edge of the perforated channel steel (105) is not higher than the upper surface of the lower main purlin (1). The perforated channel steel (105) is welded to the lifting plate (1082) in the purlin adjuster (108). The lifting plate (1082) is fixed to the L-shaped clamping plate (1081) by the lifting insert (1083). The "convex" shaped lifting insert The thickness of both ends of the plate (1083) is consistent with the height of the slot on the L-shaped clamping plate (1081). When the lifting plate (1083) is inserted into the purlin adjuster (108) to connect the L-shaped clamping plate (1081) and the lifting plate (1082), the outer edge of the lifting plate (1083) is flush with the outer edge of the L-shaped clamping plate (1081). Threaded holes are provided on the protrusions of the L-shaped clamping plate (1081), and the baffle (1084) is fixed to the L-shaped clamping plate (1081) through the threaded holes on the protrusions, thereby ensuring that the plate (1083) will not fall off.

2. The integrated construction large-span steel truss metal roof module according to claim 1, characterized in that, It also includes a dividing keel (9) and a decorative panel (10). A rib top clamp (82) is installed on the upright seam steel plate (8). A keel adjuster (83) is welded on the rib top clamp (82). A U-shaped clamp (84) is installed on the keel adjuster (83). The U-shaped clamp (84) is welded to the dividing keel (9). A decorative panel (10) is installed on the dividing keel (9). The upright seam steel plate (8) and the decorative panel (10) are also stepped.

3. The integrated construction large-span steel truss metal roof module according to claim 2, characterized in that, The keel adjuster (83) includes a U-shaped clamp (8301), a grooved support plate (8302), and a self-weight pin (8303). The U-shaped clamp (8301) has large holes on two vertical plates and small holes on both sides of the vertical plates. The grooved support plate (8302) has "ears" with holes on both sides. The "ears" are inserted into the large holes to allow the grooved support plate (8302) to be adjusted up and down along the U-shaped clamp (8301). The self-weight pin (8303) is responsible for connecting the U-shaped clamp (8301) and the grooved support plate (8302). The grooved support plate (8302) is welded to the U-shaped clamp (84) on the keel. The height inside the U-shaped clamp (8301) is equal to the sum of the thickness of the web of the grooved support plate (8302) and the height of the U-shaped clamp (84).

4. The integrated construction large-span steel truss metal roof module according to claim 1, characterized in that, When two profiled base plates (2) are spliced ​​together, the troughs overlap and self-tapping screws are nailed to the lower main purlin (1) corresponding to the trough. The vapor barrier (3) and the thermal insulation rock wool (4) are both flexible materials. During construction, the vapor barrier (3) is laid first, and then the thermal insulation rock wool (4) is laid on top of it. The thermal insulation rock wool (4) has two layers, and the upper and lower layers of thermal insulation rock wool (4) are laid crosswise. When the waterproof membrane (5) is laid, the joints overlap. The lower part of the waterproof membrane (5) at the joint is nailed to the bottom profiled base plate (2) with a roll nail. The upper part of the waterproof membrane (5) is ironed to the lower part of the waterproof membrane (5) with a hot iron.

5. The integrated construction large-span steel truss metal roof module according to claim 1, characterized in that, The round tube column purlin bracket (101) located on the lower main purlin (1) passes through the vapor barrier (3), thermal insulation rock wool (4) and waterproof membrane (5). At the round tube column purlin bracket (101), the vapor barrier (3), thermal insulation rock wool (4) and waterproof membrane (5) have openings with a diameter similar to that of the round tube column. An opening sealing membrane (51) is installed at the opening and is ironed to the waterproof membrane (5). At the edge of the wrapping, the sealing membrane (51) is firmly fixed to the round tube of the round tube column purlin bracket (101) with a steel clamp (102). The steel clamp (102) consists of two clamp plates, which are connected by bolts. The upper main purlin (6) and the upper layer purlin (7) have different sizes. When the upper layer purlin (7) is connected to the upper main purlin (6), the upper surface is kept flush.

6. The metal roofing module of the large-span steel truss with integrated construction according to claim 1, characterized in that, The upper main purlin (6) is also equipped with a round pipe column purlin bracket (101). A non-perforated channel steel (103) is welded to the corresponding round pipe column purlin bracket (101). During welding, the upper edge of the non-perforated channel steel (103) is not higher than the upper surface of the upper main purlin (6). The non-perforated channel steel (103) is welded to the same purlin adjuster (108) as the lower main purlin (1). After the purlin adjuster (108) is installed on the purlin, its L-shaped clamp (1081) is welded to the round pipe column purlin bracket (101) on the lower main purlin (1). The upper main purlins (6) are connected together by a steel core sleeve (63). A pair of connecting plates (61) are welded to the side of the upper main purlin (6). Each connecting plate (61) has a bolt. The upper purlin (7) is connected to the connecting plate (61) on the upper main purlin (6) by connecting plate bolts. During installation, the upper surfaces of the upper main purlin (6) and the upper purlin (7) are kept on the same horizontal plane. The wind-resistant clamp (81) is installed on the upper purlin (7) by self-tapping screws. The spacing in the direction perpendicular to the rib of the vertical lock edge steel plate (8) is the spacing between the ribs. At the joint of the vertical lock edge steel plate (8), the rib of the vertical lock edge steel plate (8) is fastened to the wind-resistant clamp (81). The rib is tightly clamped on the wind-resistant clamp (81) by the lock edge machine. The rib top clamp (82) is installed at the rib of the vertical lock edge steel plate (8) corresponding to the wind-resistant clamp (81). The rib top clamp (82) is firmly installed on the rib by bolts.

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