Large-curvature metal roof profiled bottom plate connecting structure and construction method thereof

Abstract

The application discloses a large-curvature metal roof profiled bottom plate connecting structure and a construction method thereof. The profiled bottom plate connecting structure comprises a profiled bottom plate connected perpendicularly to a first purlin and a second purlin respectively, an insulation board connected to the profiled bottom plate, and a metal facing plate connected above the insulation board. The application ensures the whole assembly of the profiled bottom plates on both sides of the large-curvature corner through the intersection joint setting of the profiled bottom plate. The setting of the side support member is beneficial to the support of the overhanging side of the second profiled steel plate at a high position. The setting of the connecting member ensures the fixed connection of the first profiled steel plate and the second profiled steel plate and the modeling of the intersection joint. The setting of the adapter beam, the first purlin connecting member and the second purlin connecting member is beneficial to the installation of the purlin below the profiled bottom plate and the stress and installation of the profiled bottom plate. The setting of the nail disc is beneficial to the fixation and installation of the thermal insulation layer and provides an installation basis for the metal facing plate.

Description

Technical Field

[0001] This invention belongs to the field of metal roofing installation technology, and specifically relates to a connection structure for profiled base plates of large curvature metal roofs and its construction method. Background Technology

[0002] In existing building construction designs, metal decorative panels are often used for roof decoration. To ensure the support beneath these panels during steel structure construction, profiled steel sheets are frequently used as the base layer. Profiled steel sheets possess superior properties such as high strength, lightweight, corrosion resistance, and thermal insulation. Generally, profiled steel sheets are installed in a straight line. However, when encountering roof structures with large curvatures or corners, staggered joints are required. These staggered joints necessitate on-site cutting, resulting in significant waste of time and cost, and on-site cutting also poses safety hazards. Therefore, a targeted design is needed for the profiled steel sheets at the intersections. Summary of the Invention

[0003] This invention provides a connection structure and construction method for profiled base plates of large curvature metal roofs, which solves the technical problems of fixing, supporting and installing profiled base plates at intersections under large curvature roof structures.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A large curvature metal roof profiled base plate connection structure includes a main steel structure, a transition beam connected to one side of the main steel structure, a first purlin connector connected to the other side of the main steel structure, a second purlin connector connected above the transition beam, a first purlin connected to the first purlin connector, a second purlin connected to the second purlin connector, a profiled base plate vertically connected to the first purlin and the second purlin respectively, an insulation board connected to the profiled base plate, and a metal decorative panel connected above the insulation board. The profiled base plate has no less than two layers in the height direction. Each layer is a large curvature elliptical cone surface that expands from top to bottom. At the intersection of the two layers, the upper layer is provided with an extended cantilevered eave. The profiled base plate includes a first profiled steel plate arranged perpendicular to the first purlin, and a second profiled steel plate arranged perpendicular to or at an angle to the first profiled steel plate; the top of the intersection of the first profiled steel plate and the second profiled steel plate is fixedly connected by a connecting member; the first profiled steel plate and the second profiled steel plate at the intersection are arranged in a zigzag shape; A side support is also provided below the second profiled steel sheet. The side support is connected to the second purlin and the cantilever end of the side support is provided with a side fastener. The side fastener is connected to the second profiled steel sheet by a fixing nail.

[0005] Furthermore, the transition beam is connected to the upper part of the main steel structure and is arranged in a zigzag pattern with the main steel structure; the first purlin connector is located in the upper middle part of the other side of the main steel structure and is arranged in a zigzag pattern with the main steel structure.

[0006] Furthermore, the first purlin connectors are spaced apart along the longitudinal direction at the designed angles or edges, and the first purlin connectors are arranged in pairs; the first purlin is fixedly connected in the middle of the pair of first purlin connectors, and the first purlin is made of rectangular steel pipe; the length of the first purlin corresponds to the length of the first profiled steel sheet.

[0007] Furthermore, the second purlin connectors are spaced apart along the length of the transition beam, and the second purlin connectors are installed in pairs; the second purlins are fixedly connected in the middle of the pairs of second purlin connectors, and the second purlins are made of rectangular steel pipe fittings.

[0008] Furthermore, the first and second profiled steel sheets correspond to two intersecting planar areas, which are divided according to the shape of the main steel structure and the metal decorative panels; connecting pieces are set at the intersections. The connecting pieces are zigzag-shaped connecting plates, which are arranged along the entire length of the intersecting seams or at intervals.

[0009] Furthermore, a nail tray is also provided, which passes through the insulation board and the profiled bottom plate and is connected at the bottom to the first purlin, transition beam or side support; the nail tray is densely arranged on both sides of the intersecting joint.

[0010] Furthermore, the nail tray includes a top plate disposed on the top surface of the insulation board and connecting nails disposed below the nail tray. The connecting nails pass through the insulation board and the profiled bottom plate and are fixed to the first purlin, transition beam or side support.

[0011] Furthermore, a base base is fixedly connected above the top plate. The base base includes a base plate and a U-shaped component set on the bottom surface. The U-shaped component corresponds to an angled keel base connected by bolts. The keel base corresponds to an adjustable keel, and a metal decorative panel is fixedly connected to the top of the keel.

[0012] Furthermore, the side support is an angle steel member, the length of which corresponds to the distance from the second purlin on the side to the intersecting joint; the cantilever end of the side support is provided with an angled side fastener, which is provided along the length of the intersecting joint or at intervals.

[0013] Furthermore, the construction method for the connection structure of the profiled base plate of the large curvature metal roof is as follows: Step 1: Based on the detailed drawings of the main steel structure, establish a three-dimensional model; and in conjunction with the shape of the metal decorative panels, determine the partitions of the profiled base plate; the profiled base plate shall have no less than two layers in the height direction, each layer being a large curvature elliptical cone surface that expands sequentially from top to bottom, and at the intersection of two layers, the upper layer shall be provided with an extended cantilevered eave. Step 2: Divide the area into zones based on the metal decorative panels of each layer, with the zones based on the steel beams and span of the main steel structure; set the zone joints at the steel beams of the main steel structure; lay the profiled bottom plates in the zone in a straight and parallel manner; set the profiled steel plates on both sides of the zone joint to intersect, with the first profiled steel plate and the second profiled steel plate on each side; Step 3: After the main steel structure construction is completed, install the transition beam, the first purlin connector, and the second purlin connector on the main steel structure. After installation, check the position; then install the first purlin and the second purlin. Step 4: Determine the length of the side support member based on the position of the second outer purlin, so that the intersection joint between the second profiled steel sheet on the side and the corresponding first profiled steel sheet meets the design requirements; wherein, a side fastener is pre-installed at the extended end of the side support member; Step 5: Install according to the partition numbering in the 3D software. First, install the first profiled steel sheet in the lower vertical area, and then install them sequentially from one side of the partition. Next, install the second profiled steel sheet in the higher vertical area. Then, install the connecting pieces between the adjacent first and second profiled steel sheets to ensure the integrity of the intersecting joints. Step Six: As shown in Step Five, for the adjacent profiled bottom plates on both sides of the intersecting seam in each layer, the lower one is used as the first profiled steel plate and the higher one is used as the second profiled steel plate. Continue to install them in this way until all the profiled bottom plates of a layer are successfully installed. Then install the profiled steel plates of the next layer until the entire profiled steel plate installation is completed. Step 7: After the profiled steel sheet is installed, install the insulation board on it using nail trays, and densely install nail trays on both sides where the profiled steel sheets intersect; then install the base fastener, keel base and keel on the top of the nail trays; then install the metal decorative panel on top of the keel, thus completing the construction of the large curvature metal roof profiled base sheet connection structure.

[0014] The beneficial effects of this invention are reflected in: This invention, through the intersecting joints of the profiled base plates, ensures the seamless assembly of the profiled base plates on both sides at large curvature corners, eliminating the need for on-site cutting and segmentation, greatly saving labor time and costs while avoiding safety risks. The side bracing facilitates support for the cantilevered edges of the higher-positioned second profiled steel plate. The connecting members ensure a fixed connection between the first and second profiled steel plates and maintain the aesthetic appearance at the intersecting joints. The transition beam, first purlin connector, and second purlin connector facilitate the installation of the purlins below the profiled base plate, thereby ensuring the stress distribution and installation of the profiled base plate. The nail plate facilitates the fixing and installation of the insulation layer and provides an installation base for the metal decorative panels. Other features and advantages of this invention will be set forth in the following description and will be apparent in part from the description, or may be learned by practicing the invention; the main objectives and other advantages of the invention can be realized and obtained by means of the methods particularly pointed out in the description. Attached Figure Description

[0015] Figure 1 This is a top view of a metal roof with high curvature; Figure 2 This is a sectional view of the connection structure of the profiled base plate of the large curvature metal roof at the intersection; Figure 3 This is a schematic diagram of the connection structure at the profiled base plate; Figure 4 This is a partial schematic diagram of the connection structure at the profiled base plate; Figure 5 This is a schematic diagram of the nail plate and its connection structure; Figure 6 This is a schematic diagram of the base's bottom fastener structure.

[0016] Reference numerals: 1-Metal decorative panel, 2-Main steel structure, 3-Transition beam, 4-First purlin connector, 5-Second purlin connector, 6-First purlin, 7-Second purlin, 8-Corrugated base plate, 81-First corrugated steel sheet, 82-Second corrugated steel sheet, 9-Insulation board, 10-Nail tray, 101-Top plate, 102-Connecting nail, 11-Keel base, 12-Keel, 13-Side support, 14-Connecting piece, 15-Fixing nail, 16-Side fastener, 17-Base bottom fastener. Detailed Implementation

[0017] Taking a certain internet industry innovation project as an example, the construction of the metal roof of Building #2 has commenced. The main steel structure of this project is a large-curvature elliptical shape, and the metal roof is divided into three layers, extending from top to bottom; each layer has a cantilevered edge at its junction. A profiled base plate 8 is installed beneath the metal roof. Combined with... Figures 1 to 6As shown, the large curvature metal roof profiled base plate connection structure includes a main steel structure 2, a transition beam 3 connected to one side of the main steel structure 2, a first purlin 6 connector 4 connected to the other side of the main steel structure 2, a second purlin 7 connector 5 connected above the transition beam 3, a first purlin 6 connected to the first purlin 6 connector 4, a second purlin 7 connected to the second purlin 7 connector 5, a profiled base plate 8 vertically connected to the first purlin 6 and the second purlin 7 respectively, an insulation board 9 connected to the profiled base plate 8, and a metal decorative panel 1 connected above the insulation board 9; wherein, the metal decorative panel 1 is a 3mm thick aluminum single panel.

[0018] In this embodiment, the insulation board 9 consists of two layers. The upper insulation board 9 is a 150mm thick composite-faced foam glass insulation board (both the upper and lower surfaces are fiberglass-faced, with a thermal conductivity of 0.045W / MK and a density not exceeding 120kg / m³). The lower insulation board 9 is also a 150mm thick composite-faced foam glass insulation board (the upper surface is asphalt-faced, and the lower surface is fiberglass-faced, with a thermal conductivity of 0.045W / MK and a density not exceeding 120kg / m³). The upper and lower insulation boards 9 are connected by an adhesive. A waterproof membrane is installed on the top of the insulation board 9. The waterproof membrane is a 3.0mm thick hot-melt SBS modified bitumen waterproof membrane with shale flakes. A 2.0mm thick polyurethane urea spray coating is applied to the top of the waterproof membrane, comprising a special interface agent, sprayed polyurethane waterproof coating, and aliphatic polyurethane weather-resistant topcoat.

[0019] In this embodiment, the profiled base plate 8 is layered in the height direction corresponding to the metal decorative panel 1. Each layer is a large-curvature elliptical cone surface that expands sequentially from top to bottom. At the intersection of two layers, the upper layer is provided with an extended overhanging eave. The profiled base plate 8 includes a first profiled steel plate 81 arranged perpendicular to the first purlin 6, and a second profiled steel plate 82 arranged perpendicular to or at an angle to the first profiled steel plate 81. The top of the intersection of the first profiled steel plate 81 and the second profiled steel plate 82 is fixedly connected by a connecting member 14. The intersection of the first profiled steel plate 81 and the second profiled steel plate 82 is arranged in a zigzag shape. Both the first profiled steel plate 81 and the second profiled steel plate 82 are made of 1.0mm thick YX38-150-900 type aluminum-zinc coated profiled steel plate.

[0020] In this embodiment, a side support 13 is also provided below the second profiled steel sheet 82. The side support 13 is connected to the second purlin 7, and a side fastener 16 is provided at the cantilever end of the side support 13. The side fastener 16 is connected to the second profiled steel sheet 82 by a fixing nail 15. The transition beam 3 is connected to the upper part of the main steel structure 2 and is arranged in a folded line with the main steel structure 2; the first purlin 6 connector 4 is provided in the upper middle part of the other side of the main steel structure 2 and is arranged in a folded line with the main steel structure 2.

[0021] In this embodiment, the first purlin 6 connectors 4 are spaced apart along the longitudinal direction at the designed angles or edges, and are arranged in pairs; the first purlin 6 is fixedly connected to the middle of the pair of first purlin 6 connectors 4, and the first purlin 6 is made of rectangular steel pipe; the length of the first purlin 6 corresponds to the first profiled steel sheet 81. The second purlin 7 connectors 5 are spaced apart along the longitudinal direction of the transition beam 3, and are arranged in pairs; the second purlin 7 is fixedly connected to the middle of the pair of second purlin 7 connectors 5, and the second purlin 7 is made of rectangular steel pipe. Both the first purlin 6 and the second purlin 7 are 120×60×4 rectangular steel purlins, with a spacing of no more than 1200mm.

[0022] In this embodiment, the first profiled steel sheet 81 and the second profiled steel sheet 82 correspond to two intersecting planar areas, which are divided according to the shape of the main steel structure 2 and the metal decorative panel 1; a pair of connectors 14 are provided at the intersection; the pair of connectors 14 are zigzag connecting plates, which are arranged along the length of the intersection joint or at intervals. The pair of connectors 14 are aluminum alloy profiles wrapped with polyurea waterproof material.

[0023] It also includes a nail tray, which passes through the insulation board 9 and the profiled base plate 8 and is connected at the bottom to the first purlin 6, the transition beam 3, or the side support 13; the nail trays are densely arranged on both sides of the intersecting joint. The nail tray includes a top plate 101 set on the top surface of the insulation board 9 and connecting nails 102 set below the nail tray. The connecting nails 102 pass through the insulation board 9 and the profiled base plate 8 and are fixed to the first purlin 6, the transition beam 3, or the side support 13. The nail tray is a 1.5×200×200mm PCSP metal nail tray. A base bottom fastener 17 is fixedly connected above the top plate 101. The base bottom fastener 17 includes a base plate and a U-shaped piece set on the bottom surface. The U-shaped piece is connected to the angular keel base 11 by bolts; the keel base 11 is connected to the adjustable keel 12, and the top of the keel 12 is fixedly connected to the metal decorative panel 1.

[0024] In this embodiment, the side support 13 is an angle steel piece, the length of which corresponds to the distance from the second purlin 7 on the side to the intersecting joint; the cantilever end of the side support 13 is provided with an angled side fastener 16, which is provided along the length of the intersecting joint or at intervals.

[0025] Combination Figures 1 to 6 As shown, the construction method for the connection structure of profiled base plates for large curvature metal roofs includes the following specific steps: Step 1: Based on the detailed drawings of the main steel structure 2, establish a three-dimensional model; and in conjunction with the shape of the metal decorative panel 1, determine the partitions of the profiled base plate 8; wherein the profiled base plate 8 has no less than two layers in the height direction, each layer is a large curvature elliptical cone surface that expands from top to bottom, and at the intersection of the two layers, the upper layer is provided with an extended cantilevered eave.

[0026] Step 2: Divide the metal decorative panel 1 of each layer into sections based on the steel beams and span of the main steel structure 2; set the section joints at the steel beams of the main steel structure 2; the profiled base plates 8 in the section are laid straight and parallel; the profiled steel plates on both sides of the section joint intersect, with the first profiled steel plate 81 and the second profiled steel plate 82 on each side.

[0027] Step 3: After the main steel structure 2 is completed, install the transition beam 3, the first purlin 6 connector 4, and the second purlin 7 connector 5 on the main steel structure 2. After installation, correct the position; then install the first purlin 6 and the second purlin 7.

[0028] Step 4: Determine the length of the side support 13 according to the position of the outer second purlin 7, so that the intersection joint between the second profiled steel sheet 82 on the side and the corresponding first profiled steel sheet 81 meets the design requirements; wherein, a side fastener 16 is pre-installed at the extended end of the side support 13.

[0029] Step 5: Install according to the partition numbering in the 3D software. First, install the first profiled steel sheet 81 in the lower vertical area, and then install it sequentially from one side of the partition. Then, install the second profiled steel sheet 82 in the higher partition. Then, install the connecting piece 14 between the adjacent first profiled steel sheet 81 and second profiled steel sheet 82 to ensure the integrity of the intersecting joint.

[0030] Step 6: As shown in Step 5, in each layer, the adjacent profiled base plates 8 on both sides of the intersecting seam are arranged such that the lower one is used as the first profiled steel plate 81 and the higher one is used as the second profiled steel plate 82. This process is repeated until all the profiled base plates 8 of a layer are successfully installed. Then, the profiled steel plates of the next layer are installed until the entire profiled steel plate installation is completed.

[0031] Step 7: After the profiled steel sheet is installed, install the insulation board 9 on it using nail trays, and densely install nail trays on both sides where the profiled steel sheets intersect. Then, install the base base 17, keel base 11, and keel 12 on the top of the nail trays. Make fine adjustments to the keel 12 during installation by setting elliptical elongated holes on the keel base 11. After the keel 12 is installed and positioned and meets the design requirements, install the metal decorative panel 1 on top of the keel 12, thus completing the construction of the large curvature metal roof profiled base sheet connection structure.

[0032] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A connection structure for profiled base plates of a large-curvature metal roof, characterized in that, It includes a main steel structure, a transition beam connected to one side of the main steel structure, a first purlin connector connected to the other side of the main steel structure, a second purlin connector connected above the transition beam, a first purlin connected to the first purlin connector, a second purlin connected to the second purlin connector, a profiled base plate vertically connected to the first purlin and the second purlin respectively, an insulation board connected to the profiled base plate, and a metal decorative panel connected above the insulation board; The profiled base plate has no less than two layers in the height direction. Each layer is a large curvature elliptical cone surface that expands from top to bottom. At the intersection of the two layers, the upper layer is provided with an extended cantilevered eave. The profiled base plate includes a first profiled steel plate arranged perpendicular to the first purlin, and a second profiled steel plate arranged perpendicular to or at an angle to the first profiled steel plate; the top of the intersection of the first profiled steel plate and the second profiled steel plate is fixedly connected by a connecting member; the first profiled steel plate and the second profiled steel plate at the intersection are arranged in a zigzag shape; A side support is also provided below the second profiled steel sheet. The side support is connected to the second purlin and the cantilever end of the side support is provided with a side fastener. The side fastener is connected to the second profiled steel sheet by a fixing nail.

2. The large curvature metal roof profiled base plate connection structure as described in claim 1, characterized in that, The transition beam is connected to the upper part of the main steel structure and is set in a zigzag pattern with the main steel structure; the first purlin connector is set in the upper middle part of the other side of the main steel structure and is set in a zigzag pattern with the main steel structure.

3. The large curvature metal roof profiled base plate connection structure as described in claim 2, characterized in that, The first purlin connectors are spaced apart along the longitudinal direction at the designed angles or edges, and the first purlin connectors are arranged in pairs; the first purlin is fixedly connected in the middle of the pair of first purlin connectors, and the first purlin is made of rectangular steel pipe; the length of the first purlin corresponds to the length of the first profiled steel sheet.

4. The large curvature metal roof profiled base plate connection structure as described in claim 3, characterized in that, The second purlin connectors are spaced apart along the length of the transition beam, and the second purlin connectors are installed in pairs; the second purlin is fixedly connected in the middle of the pair of second purlin connectors, and the second purlin is made of rectangular steel pipe fittings.

5. The large curvature metal roof profiled base plate connection structure as described in claim 4, characterized in that, The first and second profiled steel sheets correspond to two intersecting planar areas, which are divided according to the shape of the main steel structure and the metal decorative panels; connecting pieces are set at the intersection. The connecting pieces are zigzag-shaped connecting plates, which are arranged along the entire length of the intersecting seams or at intervals.

6. The large curvature metal roof profiled base plate connection structure as described in claim 5, characterized in that, It is also equipped with a nail tray, which passes through the insulation board and the profiled bottom plate and is connected at the bottom to the first purlin, transition beam or side support; The nail disks are densely arranged on both sides of the intersecting seam.

7. The large curvature metal roof profiled base plate connection structure as described in claim 6, characterized in that, The nail tray includes a top plate disposed on the top surface of the insulation board and connecting nails disposed below the nail tray. The connecting nails pass through the insulation board and the profiled bottom plate and are fixed to the first purlin, transition beam or side support.

8. The large curvature metal roof profiled base plate connection structure as described in claim 7, characterized in that, A base mounting bracket is fixedly connected above the top plate. The base mounting bracket includes a base plate and a U-shaped component set on the bottom surface. The U-shaped component corresponds to an angled keel base connected by bolts. The keel base corresponds to an adjustable keel, and a metal decorative panel is fixedly connected to the top of the keel.

9. The large curvature metal roof profiled base plate connection structure as described in claim 8, characterized in that, The side support is an angle steel member, the length of which corresponds to the distance from the second purlin on the side to the intersecting joint; the cantilever end of the side support is provided with an angled side fastener, which is provided along the length of the intersecting joint or at intervals.

10. A construction method for a large-curvature metal roof profiled base plate connection structure as described in any one of claims 1 to 9, characterized in that, The specific steps are as follows: Step 1: Based on the detailed drawings of the main steel structure, establish a three-dimensional model; and in conjunction with the shape of the metal decorative panels, determine the partitions of the profiled base plate; the profiled base plate shall have no less than two layers in the height direction, each layer being a large curvature elliptical cone surface that expands sequentially from top to bottom, and at the intersection of two layers, the upper layer shall be provided with an extended cantilevered eave. Step 2: Divide the metal decorative panels of each layer into zones based on the steel beams and span of the main steel structure; set the zone joints at the steel beams of the main steel structure; lay the profiled bottom plates in the zone in a straight and parallel manner; set the profiled steel plates on both sides of the zone joint to intersect, with the first profiled steel plate and the second profiled steel plate on each side; Step 3: After the main steel structure construction is completed, install the transition beam, the first purlin connector, and the second purlin connector on the main steel structure. After installation, check the position; then install the first purlin and the second purlin. Step 4: Determine the length of the side support member based on the position of the second outer purlin, so that the intersection joint between the second profiled steel sheet on the side and the corresponding first profiled steel sheet meets the design requirements; wherein, a side fastener is pre-installed at the extended end of the side support member; Step 5: Install according to the partition numbering in the 3D software. First, install the first profiled steel sheet in the lower vertical area, and then install them sequentially from one side of the partition. Next, install the second profiled steel sheet in the higher vertical area. Then, install the connecting pieces between the adjacent first and second profiled steel sheets to ensure the integrity of the intersecting joints. Step Six: As shown in Step Five, for the adjacent profiled bottom plates on both sides of the intersecting seam in each layer, the lower one is used as the first profiled steel plate and the higher one is used as the second profiled steel plate. Continue to install them in this way until all the profiled bottom plates of a layer are successfully installed. Then install the profiled steel plates of the next layer until the entire profiled steel plate installation is completed. Step 7: After the profiled steel sheet is installed, install the insulation board on it using nail trays, and densely install nail trays on both sides where the profiled steel sheets intersect; then install the base fastener, keel base and keel on the top of the nail trays; then install the metal decorative panel on top of the keel, thus completing the construction of the large curvature metal roof profiled base sheet connection structure.

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