Roof structure and building comprising same

Abstract

A roof structure and a building comprising same. The roof structure comprises a gutter structure (10), roof panels (20) and a waterproof covering sheet (30). The gutter structure (10) comprises a bottom wall (11), and an inner side wall (12) and an outer side wall (13) respectively connected to two ends of the bottom wall (11); the side of the upper portion of the inner side wall (12) distant from a gutter is bent to form a fixed wall (14). The roof panels (20) are located above the fixed wall (14); the fixed wall (14) is fixedly connected to the inner side surfaces of the roof panels (20); and the end of the roof panels (20) facing the gutter structure (10) does not intersect with the plane where the inner side wall (12) is located. The waterproof covering sheet (30) extends in the extension direction of the gutter structure (10) and extends from the outer side surfaces of the roof panels (20) to the surface of the inner side wall (12); and the waterproof covering sheet (30) is sealedly connected to the outer side surfaces of the roof panels (20) and the surface of the inner side wall (12), separately. Water seepage and water leakage between the roof panels (20) and the gutter structure (10) can be prevented, thereby improving the waterproofness of the roof structure.

Description

Roof structure and building thereof Technical Field

[0001] The present disclosure relates to the field of construction, and in particular to a roof structure and a building thereof. Background Art

[0002] With the progress and development of science and technology, metal has become a widely used material in the construction industry, especially in the metal roofing industry. Metal steel roofing has become the choice of many owners. However, the waterproofness of metal roofing has a greater impact on metal roofing.

[0003] The metal roof includes a roof panel. In order to meet the drainage requirements, the metal roof is also provided with a gutter structure. Currently, the gutter structure still has the problem of leakage and seepage. Summary of the Invention

[0004] The embodiments of the present disclosure provide a roof structure and a building thereof to solve or alleviate one or more technical problems in the prior art.

[0005] As a first aspect of an embodiment of the present disclosure, an embodiment of the present disclosure provides a roof structure, including:

[0006] The gutter structure includes a bottom wall and an inner wall and an outer wall connected to both ends of the bottom wall, wherein the upper portion of the inner wall is bent toward an end away from the gutter groove to form a fixed wall;

[0007] The roof panel is located above the fixed wall, the fixed wall is fixedly connected to the inner surface of the roof panel, and the end of the roof panel facing the gutter structure does not intersect with the plane of the inner wall;

[0008] The waterproof covering sheet extends along the extension direction of the gutter structure and extends from the outer surface of the roof panel to the inner wall surface. The waterproof covering sheet is sealed and connected to the outer surface and the inner wall surface of the roof panel respectively.

[0009] In some possible implementations, the roof panel includes a first waterproof layer located on the outer surface, the material of the first waterproof layer includes thermoplastic polyolefin, the material of the waterproof covering sheet includes thermoplastic polyolefin, the material of the gutter structure includes thermoplastic polyolefin, the waterproof covering sheet is connected to the first waterproof layer by hot air welding, and the waterproof covering sheet is connected to the inner wall by hot air welding.

[0010] In some possible implementations, the width of the hot air welding connection is greater than 40 mm.

[0011] In some possible implementations, the end of the roof panel facing the gutter structure is flush with the inner wall.

[0012] In some possible implementations, the roof structure also includes a first purlin, which is located on the lower side of the roof panel and close to the gutter structure. The fixing wall is located between the first purlin and the inner surface of the roof panel, and the first screw passes through the roof panel and the fixing wall to fix the first purlin.

[0013] In some possible implementations, the waterproof covering sheet covers the first screw.

[0014] In some possible implementations, in the extension direction of the gutter structure, the roof panel includes a first end portion and a second end portion that are oppositely disposed, the first end portion includes a first regional portion and a second regional portion, the second regional portion protrudes relative to the first regional portion, the second end portion includes a third regional portion and a fourth regional portion, the third regional portion protrudes relative to the fourth regional portion, the third regional portion matches the first regional portion, and the second regional portion matches the fourth regional portion;

[0015] In the extension direction of the gutter structure, the two adjacent roof panels are the first roof panel and the second roof panel, the first end of the first roof panel is arranged opposite to the second end of the second roof panel, the third area portion is overlapped with the second area portion, and the first screw passes through the corresponding third area portion and the second area portion and is fixedly connected to the first purlin.

[0016] In some possible implementations, the first area portion and the third area portion are located on the outside relative to the second area portion and the fourth area portion, the outer surface of the third area portion forms a recessed area relative to the outer surface of the roof panel, the upper end head of the first screw is located in the recessed area, and the height of the upper end head of the first screw is less than the depth of the recessed area.

[0017] In some possible implementations, a main structural steel column is further included, the bottom wall is located above the main structural steel column, insulation material is provided between the bottom wall and the main structural steel column, and insulation material is provided between the inner wall and the first purlin.

[0018] In some possible implementations, the roof structure also includes main structural steel columns and parapets, the bottom wall is located above the main structural steel columns, the parapet includes a wall outer panel and a parapet back panel, the wall outer panel is located on the outside of the main structural steel column and a preset gap is set between the main structural steel column, the upper end of the wall outer panel is higher than the upper end of the outer wall, a second purlin is set between the wall outer panel and the outer wall, the parapet back panel is located on the side of the outer wall facing the gutter groove, the lower part of the parapet back panel is stacked with the upper part of the outer wall and is connected to the second purlin by a second screw.

[0019] In some possible implementations, thermal insulation material is provided on the inner side of the wall outer panel, and the second purlin is filled with thermal insulation material.

[0020] In some possible implementations, the roof structure further includes a sealing plug, which is used to cover the exposed end of the second screw.

[0021] In some possible implementations, a parapet cap is further included, which is buckled onto the upper ends of the wall outer plate and the parapet back plate.

[0022] As a second aspect of the embodiments of the present disclosure, the embodiments of the present disclosure provide a building, comprising the roof structure of any disclosed embodiment of the present disclosure.

[0023] The technical solution of the embodiment of the present disclosure can achieve the following beneficial effects: in the roof structure of the embodiment of the present disclosure, the waterproof covering sheet is sealed with the outer surface and the inner wall surface of the roof panel respectively, and the junction between the gutter structure and the roof panel is covered by the waterproof covering sheet to avoid exposure of the roof panel and reduce the risk of corrosion of the end face of the roof panel. The gutter structure and the roof panel are connected by the waterproof covering plate to form a closed and waterproof whole, thereby avoiding water seepage and leakage between the roof panel and the gutter structure and improving the waterproof performance of the roof structure.

[0024] The above summary is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the present disclosure will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the multiple drawings represent the same or similar components or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings only depict some embodiments according to the present disclosure and should not be regarded as limiting the scope of the present disclosure.

[0026] FIG1 is a schematic cross-sectional view of a roof structure according to an embodiment of the present disclosure;

[0027] FIG2 is an enlarged schematic diagram of a partial structure of a roof structure according to an embodiment of the present disclosure;

[0028] FIG3 is a schematic diagram of the roof panel structure of the roof structure according to an embodiment of the present disclosure;

[0029] FIG4 is a schematic cross-sectional view of a roof panel of a roof structure according to an embodiment of the present disclosure;

[0030] FIG5 is a schematic cross-sectional view of the roof panels of the roof structure in the overlapping direction according to an embodiment of the present disclosure;

[0031] FIG6 is an enlarged schematic diagram of the overlapping positions of the roof panels of the roof structure according to an embodiment of the present disclosure. Explanation of Figure Numbers

[0032] 10. Gutter structure; 20. Roof panel; 30. Waterproof covering sheet; 40. First purlin; 50. Main steel column structure; 60. Insulation material; 70. Parapet; 80. Second purlin; 90. Sealing plug;

[0033] 11. Bottom wall; 12. Inner wall; 13. Outer wall; 14. Fixed wall; 20a. First roof panel; 20b. Second roof panel; 201. First waterproof layer; 202. First metal plate layer; 21. First end portion; 22. Second end portion; 211. First regional portion; 212. Second regional portion; 221. Third regional portion; 222. Fourth regional portion; 41. First main portion; 42. First bending portion; 43. Second bending portion; 71. Wall outer panel; 72. Parapet back panel; 73. Parapet cap; M1. First screw; M2. Second screw. DETAILED DESCRIPTION

[0034] Hereinafter, only certain exemplary embodiments are briefly described. As will be appreciated by those skilled in the art, the described embodiments may be modified in various ways without departing from the spirit or scope of the present disclosure. Therefore, the drawings and description are to be considered as illustrative in nature and not restrictive.

[0035] In the prior art, roof gutter structures typically incorporate eaves plugs and sealant between the roof panels and the gutter structure. This type of structure is prone to leakage in high winds. Furthermore, leaks in the gutter structure require repeated repairs, increasing the cost of the roof structure. Furthermore, the ends of the roof panels near the gutter structure are susceptible to corrosion from rainwater.

[0036] In order to solve the water seepage and leakage problem of roof structures in the related art, an embodiment of the present disclosure provides a roof structure. The roof structure of the embodiment of the present disclosure is described in detail below with reference to the accompanying drawings.

[0037] Figure 1 is a schematic cross-sectional view of a roof structure according to an embodiment of the present disclosure, and Figure 2 is an enlarged schematic view of a portion of the roof structure according to an embodiment of the present disclosure. Figure 2 may be an enlarged schematic view of a portion of the structure shown in Figure 1. Referring to Figures 1 and 2, an embodiment of the present disclosure provides a roof structure comprising a gutter structure 10, a roof panel 20, and a waterproof covering sheet 30.

[0038] 1 and 2 , illustratively, the gutter structure 10 includes a bottom wall 11 and an inner wall 12 and an outer wall 13 connected at both ends of the bottom wall 11. The upper portion of the inner wall 12 is bent toward the end away from the gutter groove to form a fixed wall 14. The roof panel 20 is located above the fixed wall 14, and the fixed wall 14 is fixedly connected to the inner surface of the roof panel 20. The end of the roof panel 20 facing the gutter structure 10 does not intersect with the plane of the inner wall 12. The waterproof covering sheet 30 extends along the extension direction of the gutter structure 10 and extends from the outer surface of the roof panel 20 to the surface of the inner wall 12. The waterproof covering sheet 30 is sealed to the outer surface of the roof panel 20 and the surface of the inner wall 12, respectively.

[0039] It should be noted that the roof structure in the embodiment of the present disclosure can be applied to the roof of a building. The "inner side" of the roof panel in this article refers to the side facing the inside of the building, that is, the lower side of the roof panel in Figure 1, and the "outer side" of the roof panel refers to the side facing the outside of the building, that is, the upper side of the roof panel in Figure 1.

[0040] For example, the end of the roof panel 20 facing the gutter structure 10 does not intersect the plane of the inner wall 12. This means that the end of the roof panel 20 facing the gutter structure 10 is located outside the inner wall 12. In other words, the end of the roof panel 20 facing the gutter structure 10 does not extend into the gutter groove of the gutter structure 10. This arrangement eliminates the need for a hem structure between the inner wall 12 and the roof panel 20, facilitating contact between the waterproof cover sheet 30 and the surface of the inner wall 12 and preventing water in the gutter groove from seeping in through the gap between the inner wall 12 and the roof panel 20.

[0041] In the roof structure of the disclosed embodiment, the roof panel 20 is located above the fixed wall 14. The fixed wall 14 is fixedly connected to the inner surface of the roof panel 20. The end of the roof panel 20 facing the gutter structure 10 does not intersect with the plane of the inner wall 12. The waterproof covering sheet 30 extends along the extension direction of the gutter structure 10 and extends from the outer surface of the roof panel 20 to the surface of the inner wall 12. The waterproof covering sheet 30 is respectively sealed to the outer surface of the roof panel 20 and the surface of the inner wall 12. In such a roof structure, the end of the roof panel 20 facing the gutter structure 10 does not extend into the gutter groove. Therefore, the intersection of the gutter structure 10 and the roof panel 20 can be covered by the waterproof covering sheet 20, avoiding the exposure of the roof panel 20 of the roof structure and reducing the risk of corrosion on the end surface of the roof panel 20. The waterproof covering sheet 30 is sealed against the outer surface of the roof panel 20 and the inner surface of the gutter structure 10, respectively. Thus, the gutter structure 10 and the roof panel 20, when connected via the waterproof covering sheet 30, form a sealed, waterproof entity. This prevents water seepage and leakage between the roof panel 20 and the gutter structure 10, thereby improving the waterproof performance of the roof structure. Furthermore, no waterproof plug or other structure is required at the end of the roof panel 20 near the gutter structure 10, facilitating installation of the roof panel and reducing costs.

[0042] 1 and 2 , the gutter structure 10 comprises a bottom wall 11, inner sidewalls 12, and outer sidewalls 13, which are connected to form a gutter channel for draining water from the roof structure. The bottom wall 11 can be flat, as shown in FIG1 . In other embodiments, the bottom wall 11 can be curved. The shape of the bottom wall 11 can be customized and is not specifically limited herein.

[0043] For example, the outer sidewall 13 of the gutter structure 10 can be positioned near the parapet and fixedly connected thereto, while the inner sidewall 12 of the gutter structure 10 is positioned near the roof panel 20. The height of the outer sidewall 13 can be greater than the height of the inner sidewall 12. The end of the roof panel 20 away from the gutter structure 10 is tilted upward relative to the end of the roof panel 20 near the gutter structure 10, so that water on the roof panel 20 can flow along the roof panel 20 into the gutter groove of the gutter structure 10.

[0044] Illustratively, the waterproof covering sheet 30 is sealedly connected to the outer surface of the roof panel 20 and the inner wall 12 of the gutter structure 10, respectively. The waterproof covering sheet 30 is sealedly connected to the inner wall 12. The waterproof covering sheet 30 may cover a portion of the inner wall 12, or the entire inner wall 12, or the waterproof covering sheet 30 may partially cover the bottom wall 11 of the gutter structure 10. In this way, the gap between the lower surface of the roof panel 20 and the fixed wall 11 is sealed by the waterproof covering sheet 30, thereby improving the waterproof performance between the gutter structure 10 and the roof panel 20. The specific dimensions of the waterproof covering sheet 30 are not limited herein and can be set according to actual usage requirements.

[0045] Illustratively, the waterproof covering sheet 30 is sealed to the outer surface of the roof panel 20 and the inner wall 12, respectively. The waterproof covering sheet 30 may be sealed to the outer surface of the roof panel 20 and the inner wall 12, respectively, using a sealant. In other embodiments, the waterproof covering sheet 30 may be sealed to the outer surface of the roof panel 20 and the inner wall 12, respectively, using hot air welding. The specific method for sealing the waterproof covering sheet 30 to the outer surface of the roof panel 20 and the inner wall 12 is not limited herein and may be configured based on actual usage requirements.

[0046] 1 and 2 , illustratively, the upper portion of the inner wall 12 is bent toward an end away from the gutter groove to form a fixed wall 14. The roof panel 20 is located above the fixed wall 14, and the fixed wall 14 is fixedly connected to the inner surface of the roof panel 20, for example, by screws.

[0047] In one embodiment, the roof panel 20 includes a first waterproof layer 201 located on its outer surface. The first waterproof layer 201 is made of thermoplastic polyolefin. The waterproof covering sheet 30 is also made of thermoplastic polyolefin. The gutter structure 10 is also made of thermoplastic polyolefin. The waterproof covering sheet 30 is connected to the first waterproof layer 201 by hot-air welding, and the waterproof covering sheet 30 is also connected to the inner wall 12 by hot-air welding. This connection method strengthens the connection between the waterproof covering sheet 30 and the first waterproof layer 201 on the outer surface of the roof panel 20, and between the waterproof covering sheet 30 and the inner wall 12. The connection is not affected by weather and sun, and water leakage at the connection points of the waterproof covering sheet 30 is avoided, further improving the waterproof performance of the roof structure.

[0048] Figure 3 is a schematic diagram of the roof panel structure of a roof structure according to an embodiment of the present disclosure. Referring to Figure 3 , in one embodiment, the roof panel 20 may include a first metal sheet layer 202 and a first waterproof layer 201 attached to the outside of the first metal sheet layer 202. The first metal sheet layer 202 may include a metal sheet, such as a steel sheet or an aluminum sheet. The first waterproof layer 201 may be attached to the outside of the first metal sheet layer 202. The material of the first waterproof layer 201 may be thermoplastic polyolefin (TPO). The first waterproof layer 201 may be a TPO waterproof layer and may be attached to the outer surface of the first metal sheet layer 202 via an adhesive layer.

[0049] In one embodiment, the waterproof cover sheet 30 is made of thermoplastic polyolefin. Exemplarily, the waterproof cover sheet 30 is made of thermoplastic polyolefin.

[0050] In one embodiment, the width of the hot-air welded connection is greater than 40 mm. The width of the hot-air welded connection can represent the effective dimension of the welded connection between the waterproof cover sheet 30 and the first waterproof layer 21, and between the waterproof cover sheet 30 and the inner sidewall 12. Setting the hot-air welded connection width greater than 40 mm ensures the structural strength and stability of the connection between the waterproof cover sheet 30, the roof panel 20, and the inner sidewall 12, thereby improving the waterproof performance of the waterproof cover sheet 30.

[0051] For example, the width of the hot air welding connection is 40 mm, 50 mm, 60 mm, or 70 mm. The specific width of the hot air welding connection can be set according to actual use requirements and is not limited here.

[0052] As shown in Figures 1 and 2, in one embodiment, the end of the roof panel 20 facing the gutter structure 10 is flush with the inner sidewall 12. For example, the end of the roof panel 20 facing the gutter structure 10 (i.e., the left end of the roof panel 20) is planar. Because the right end of the roof panel 20 is tilted upward relative to the left end, the end of the roof panel 20 facing the gutter structure 10 is flush with the inner sidewall 12. This means that the upper edge of the left end of the roof panel 20 is flush with the inner sidewall 12. The end surface of the roof panel 20 facing the gutter structure 10 is flush with the extended plane of the inner sidewall 12. This prevents the roof panel 20 from extending into the gutter groove of the gutter structure 10, thereby preventing water from seeping into the gutter groove when it accumulates below the roof panel 20. Furthermore, the flushness of the end surface of the roof panel 20 facing the gutter structure 10 with the inner sidewall 12 further enhances the overall aesthetics of the gutter structure 10 and the end of the roof panel.

[0053] 1 and 2 , in one embodiment, the roof structure further includes a first purlin 40 , which is located on the lower side of the roof panel 20 , close to the gutter structure 10 , and a fixing wall 14 is located between the first purlin 40 and the inner surface of the roof panel 20 , and a first screw M1 passes through the roof panel 20 and the fixing wall 14 to fix the first purlin 40 .

[0054] As shown in Figure 2, the first purlin 40 exemplarily includes a first main body 41 and a first bent portion 42 and a second bent portion 43 located at both ends of the first main body 41. The first main body 41 can be fixedly connected to the main structural steel column using screws or bolts. The first bent portion 42 is located at the top of the first main body 41, and the fixed wall 14 overlaps the outer end surface of the first bent portion 42. The roof panel 20 is located on the upper end surface of the fixed wall 14, that is, the fixed wall 14 is clamped between the roof panel 20 and the first bent portion 42. The first screw M1 passes through the roof panel 20, the fixed wall 14, and the first bent portion 42, fixing the roof panel 20, the fixed wall 14, and the first purlin 40. Thus, the first screw M1 connects and secures the fixed wall 14, the first purlin 40, and the roof panel 20 of the gutter structure, facilitating the installation and removal of the roof panel 20 and the gutter structure 10.

[0055] For example, the first screw M1 may include a rivet, a self-tapping screw, a non-self-tapping screw, or other components that can play a role in fixing and connecting. For example, the first screw M1 may be a self-tapping screw for easy connection.

[0056] Exemplarily, the first screws M1 include multiple groups, each group including one or more first screws M1. For example, in the embodiment of the present disclosure, a group includes three first screws M1. The multiple groups of first screws are arranged along the extension direction of the gutter structure 10 to securely connect the roof panel 20 to the fixed wall 14 of the gutter structure 10. This can further improve the stability and reliability of the connection of the roof panel 20 and enhance the wind-proof ability of the roof panel 20.

[0057] As shown in Figure 2 , in one embodiment, a waterproof cover sheet 30 covers the first screw M1. This arrangement creates a sealed space between the waterproof cover sheet 30 and the outer surface of the roof panel 20. The first screw M1 is entirely located within the sealed space, preventing liquid from flowing toward the first screw M1. The waterproof cover sheet 30 protects the first screw M1 from corrosion, thereby further preventing water seepage at the location of the first screw M1 and further improving the waterproof performance of the roof panel.

[0058] Exemplarily, there are three first screws M1 , which are fixed at intervals along the extending direction of the fixing wall 14 , and the waterproof covering sheet 30 can cover all three first screws M1 .

[0059] FIG4 is a schematic cross-sectional view of a roof panel of a roof structure according to an embodiment of the present disclosure; FIG5 is a schematic cross-sectional view of a roof panel of a roof structure according to an embodiment of the present disclosure in the overlapping direction; and FIG6 is an enlarged schematic view of the overlapping position of the roof panel of a roof structure according to an embodiment of the present disclosure. FIG6 may be an enlarged schematic view of a portion of the structure of FIG5 . Referring to FIG4 to FIG6 , in one embodiment, in the extension direction of the gutter structure 10, the roof panel 20 includes a first end portion 21 and a second end portion 22 that are oppositely arranged. The first end portion 21 includes a first area portion 211 and a second area portion 212. The second area portion 212 protrudes relative to the first area portion 211. The second end portion 22 includes a third area portion 221 and a fourth area portion 222. The third area portion 221 protrudes relative to the fourth area portion 222. The third area portion 221 matches the first area portion 212, and the second area portion 212 matches the fourth area portion 222.

[0060] As shown in Figure 4 , for example, the second region 212 protrudes relative to the first region 211, forming a stepped surface between the second region 212 and the first region 211. The third region 221 protrudes relative to the fourth region 222, forming a stepped surface between the third region 221 and the fourth region 222. After the first end 21 and the second end 22 are butted together, the second region 211 and the third region 221 are arranged in an overlapping manner.

[0061] It should be noted that the third region 221 mates with the first region 212, and the second region 212 mates with the fourth region 222. It can be understood that when the second and third regions 211 and 221 are overlapped and connected, their opposing surfaces are parallel. For example, the third region 221 can mate with the side of the first region 211, with a sealing material provided between the third and first regions 221 and 211. The second region 212 can mate with the side of the fourth region 222, with a sealing material provided between the second and fourth regions 212 and 222. The upper surface of the second region 212 mates with the lower surface of the third region 221 in parallel.

[0062] 5 and 6 , for example, in the extension direction of the gutter structure 10, the two adjacent roof panels 20 are respectively the first roof panel 20a and the second roof panel 20b, the first end 21 of the first roof panel 20a and the second end 22 of the second roof panel 20b are arranged opposite to each other, the third area portion 221 and the second area portion 212 are overlapped and connected, and the first screw M1 passes through the corresponding third area portion 221 and the second area portion 212 and is fixedly connected to the first purlin 40.

[0063] In the roof structure of the disclosed embodiment, the first end 21 of the first roof panel 20a and the second end 22 of the second roof panel 20b are positioned opposite each other, with the third section 221 and the second section 212 overlapping each other. This simplifies installation of the roof panels, effectively reducing installation difficulty and improving construction efficiency. First screws M1 penetrate the corresponding third and second sections 221, 212, and securely connect them to the first purlin 40. This arrangement allows the first screws M1 to simultaneously penetrate the metal sheeting on both sides of the roof panel, increasing connection strength, improving the wind-up resistance of the roof panel, and ensuring the stability of the roof structure.

[0064] As shown in Figures 5 and 6 , in one embodiment, the first and third regions 211 and 221 are located outboard of the second and fourth regions 212 and 222. The outer surface of the third region 221 forms a recessed area relative to the outer surface of the roof panel 20. The upper end of the first screw M1 is located in the recessed area, and the height of the upper end of the first screw M1 is less than the depth of the recessed area. This arrangement allows the first screw M1 to be formed within the recessed area, eliminating the need for the upper end of the first screw M1 to be directly exposed outdoors. This reduces the cold and thermal bridge effects of the first screw M1 and prevents the formation of condensation at the upper end of the first screw M1.

[0065] As shown in Figures 5 and 6, the roof structure exemplarily further includes a waterproof covering strip, which is disposed on the outer surface of the roof panel. The first screw M1 is arranged along the extension direction of the gutter structure, and the waterproof covering strip covers the first screw M1 along the extension direction of the gutter structure. The waterproof covering strip is composed of a thermoplastic polyolefin material, and the roof panel includes a first waterproof layer, which is also composed of a thermoplastic polyolefin material. The two side edges of the waterproof covering strip are sealed to the first waterproof layer via hot air welding. This arrangement allows the waterproof covering strip to enclose the first screw M1 in a sealed space, preventing liquid from flowing toward the first screw M1, further preventing water seepage at the location of the first screw M1, and further improving the waterproof performance of the roof structure.

[0066] 1 and 2 , in one embodiment, the roof structure further includes a main structural steel column 50, a bottom wall 11 is located above the main structural steel column 50, a thermal insulation material 60 is disposed between the bottom wall 11 and the main structural steel column 50, and a thermal insulation material 60 is disposed between the inner wall 12 and the first purlin 40. Exemplarily, the thermal insulation material 60 is thermal insulation cotton.

[0067] As shown in FIG1 , ribs are provided on the outer surface of the main structural steel column 50, and the first main body 41 of the first purlin 40 can be fixedly connected to the main structural steel column 50 by screws or bolts. The first bent portion 42 is located at the top end of the first main body 41 and is fixedly connected to the roof panel 20 by screws. A gap is formed between the bottom wall 11 and the main structural steel column 50, and a gap is formed between the first purlin 40 and the inner wall 12. Insulation material 60 is filled in the gap formed between the bottom wall 11 and the main structural steel column 50, and the gap formed between the first purlin 40 and the inner wall 12. This can avoid the cold bridge and thermal bridge effects of the main structural steel column 50, the first purlin 40, and the gutter structure 10, thereby improving the thermal insulation performance of the roof structure and facilitating energy conservation and consumption reduction of the building.

[0068] As shown in Figure 1, in one embodiment, the roof structure further includes a main structural steel column 50 and a parapet 70. The bottom wall 11 is located above the main structural steel column 50. The parapet 70 includes a wall outer panel 71 and a parapet back panel 72. The wall outer panel 71 is located on the outside of the main structural steel column 50 and a preset gap is set between the wall outer panel 71 and the main structural steel column 50. The upper end of the wall outer panel 71 is higher than the upper end of the outer wall 13, and a second purlin 80 is provided between the wall outer panel 71 and the outer wall 13. The parapet back panel 72 is located on the side of the outer wall 13 facing the gutter groove. The lower part of the parapet back panel 72 is stacked with the upper part of the outer wall 13 and connected to the second purlin 80 by a second screw M2. With this arrangement, the outer side wall 13 of the gutter structure 10 and the parapet back plate 72 are stacked, and the second screw M2 passes through the outer side wall 13 and the parapet back plate 72 to be connected and fixed to the second purlin 80, making the installation and disassembly of the gutter structure 10 convenient.

[0069] Exemplarily, the upper end of the outer wall 13 is higher than the upper end of the inner wall 12, and the upper end of the outer wall higher than the inner wall 12 is connected and fixed to the parapet backboard 72 and the second purlin 80 by a second screw M2, so as to prevent water in the gutter groove from corroding the second screw M2.

[0070] As shown in Figure 1 , in one embodiment, insulation material 60 is provided on the inner side of the outer wall panel 71, and the second purlin 80 is filled with insulation material 60. For example, the insulation material may be thermal insulation foam. This arrangement avoids the cold bridge and thermal bridge effects between the outer wall panel 71 and the second purlin 80, thereby improving the thermal insulation performance of the parapet of the roof structure and contributing to energy conservation and consumption reduction in the building.

[0071] As shown in Figure 1 , in one embodiment, the roof structure further includes a sealing plug 90, which is used to cover the exposed end of the second screw M2. This arrangement further enhances the waterproofing of the connection between the parapet back panel 72 and the outer wall 13, protects the second screw M2 from corrosion, and further prevents water seepage at the second screw M2 location, further improving the waterproofing of the roof panel.

[0072] As shown in Figure 1 , in one embodiment, parapet 70 further includes a parapet cap 73, which is buckled onto the upper ends of the wall panel 71 and the parapet back panel 72. For example, the parapet cap 73 is mounted on the top of the parapet to seal the top of the parapet 70. The parapet cap includes a cap body and snap-fitting portions located on either side of the cap body. The snap-fitting portions are respectively attached to the parapet panel 71 and the parapet back panel 72 and fixedly connected via screws.

[0073] As a second aspect of the embodiments of the present disclosure, the embodiments of the present disclosure provide a building, comprising the roof structure of any disclosed embodiment of the present disclosure.

[0074] The roof structure of the above embodiment and other components of the building can adopt various technical solutions known to ordinary technicians in this field now and in the future, and will not be described in detail here.

[0075] In the description of this specification, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present disclosure.

[0076] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of such features. Throughout the present disclosure, "plurality" means two or more, unless otherwise specifically defined.

[0077] In this disclosure, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections, electrical connections, or communication; direct connections or indirect connections through an intermediate medium; and internal connections between two components or interactions between two components. Those skilled in the art will understand the specific meanings of these terms in this disclosure based on specific circumstances.

[0078] In the present disclosure, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0079] The disclosure above provides many different embodiments or examples for implementing different structures of the present disclosure. In order to simplify the present disclosure, the components and settings of specific examples are described above. Of course, these are merely examples and are not intended to limit the present disclosure. In addition, the present disclosure may repeat reference numbers and / or reference letters in different examples. Such repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed.

[0080] The above are only specific embodiments of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Any person skilled in the art can easily conceive of various modifications or substitutions within the technical scope disclosed in this disclosure, and such modifications or substitutions should be included in the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be based on the scope of protection of the claims.

Claims

1. A roof structure comprising: The gutter structure includes a bottom wall and an inner wall and an outer wall connected to both ends of the bottom wall, wherein the upper portion of the inner wall is bent toward a side away from the gutter groove to form a fixed wall; a roof panel located above the fixed wall, the fixed wall being fixedly connected to the inner surface of the roof panel, and an end of the roof panel facing the gutter structure not intersecting with the plane of the inner wall; A waterproof covering sheet extends along the extension direction of the gutter structure and extends from the outer surface of the roof panel to the inner wall surface. The waterproof covering sheet is sealed and connected to the outer surface of the roof panel and the inner wall surface respectively.

2. The roof structure according to claim 1, characterized in that: The roof panel includes a first waterproof layer located on the outer surface, the material of the first waterproof layer includes thermoplastic polyolefin, the material of the waterproof covering sheet includes thermoplastic polyolefin, the material of the gutter structure includes thermoplastic polyolefin, the waterproof covering sheet is connected to the first waterproof layer by hot air welding, and the waterproof covering sheet is connected to the inner wall by hot air welding.

3. The roof structure according to claim 2, characterized in that: The width of the hot air welding connection is greater than 40 mm.

4. The roof structure according to claim 1, characterized in that: One end portion of the roof panel facing the gutter structure is flush with the inner side wall.

5. The roof structure according to claim 1, characterized in that: The roof structure also includes a first purlin, which is located on the lower side of the roof panel and close to the gutter structure. The fixing wall is located between the first purlin and the inner surface of the roof panel, and the first screw passes through the roof panel and the fixing wall to fix the first purlin.

6. The roof structure according to claim 5, characterized in that: The waterproof covering sheet covers the first screw.

7. The roof structure according to claim 5 or 6, characterized in that: In the extension direction of the gutter structure, the roof panel includes a first end and a second end that are oppositely arranged, the first end includes a first area portion and a second area portion, the second area portion protrudes relative to the first area portion, the second end includes a third area portion and a fourth area portion, the third area portion protrudes relative to the fourth area portion, the third area portion matches the first area portion, and the second area portion matches the fourth area portion; In the extension direction of the gutter structure, the two adjacent roof panels are respectively the first roof panel and the second roof panel, the first end of the first roof panel is arranged opposite to the second end of the second roof panel, the third area portion is overlapped with the second area portion, and the first screw passes through the corresponding third area portion and the second area portion and is fixedly connected to the first purlin.

8. The roof structure according to claim 7, characterized in that: The first area portion and the third area portion are located on the outside relative to the second area portion and the fourth area portion, the outer surface of the third area portion forms a recessed area relative to the outer surface of the roof panel, the upper end head of the first screw is located in the recessed area, and the height of the upper end head of the first screw is less than the depth of the recessed area.

9. The roof structure according to claim 5, characterized in that: It also includes a main structural steel column, the bottom wall is located above the main structural steel column, thermal insulation material is provided between the bottom wall and the main structural steel column, and thermal insulation material is provided between the inner wall and the first purlin.

10. The roof structure according to claim 1, characterized in that: The roof structure also includes main structural steel columns and parapets. The bottom wall is located above the main structural steel columns. The parapet includes a wall outer panel and a parapet back panel. The wall outer panel is located on the outside of the main structural steel columns and a preset gap is set between the wall outer panel and the main structural steel columns. The upper end of the wall outer panel is higher than the upper end of the outer wall. A second purlin is set between the wall outer panel and the outer wall. The parapet back panel is located on the side of the outer wall facing the gutter groove. The lower part of the parapet back panel is stacked with the upper part of the outer wall and is connected to the second purlin by a second screw.

11. The roof structure according to claim 10, characterized in that: The inner side of the wall outer panel is provided with a heat-insulating material, and the second purlin is filled with the heat-insulating material.

12. The roof structure according to claim 10, characterized in that: The roof structure further includes a sealing plug, which is used to seal the exposed end of the second screw.

13. The roof structure according to claim 10, characterized in that: It also includes a parapet cap, which is buckled on the upper ends of the wall outer plate and the parapet back plate.

14. A building, characterized in that: The invention comprises a roof structure according to any one of claims 1 to 13.

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