Steel structure top flange reinforcing structure, steel structure factory building and steel structure top flange reinforcing method

Abstract

The invention relates to a steel structure top flange reinforcing structure, a steel structure factory building and a steel structure top flange reinforcing method. The steel structure top flange reinforcing structure comprises steel frame beams, purlines, a roof plate and reinforcing beams, and the multiple steel frame beams are arranged at intervals in the first direction; the plurality of purlines are arranged on the steel frame beam and are arranged at intervals in the second direction; the roof plate is laid on the purlines; the reinforcing beam is connected to the steel frame beam, the extending direction of the reinforcing beam is consistent with the extending direction of the steel frame beam, and the purline is connected with the reinforcing beam. Wherein a C-shaped through groove is formed in the position, corresponding to the reinforcing beam, of the roof plate, the part defined by the inner groove wall of the through groove on the roof plate in an enclosing mode is defined as a turnover part, and the turnover part can be turned over relative to the roof plate so that an opening defined by the outer groove wall of the through groove can be opened, and the reinforcing beam can be conveniently arranged on the steel frame beam from the opening. By means of the arrangement, for an existing steel structure factory building, the problem that no reinforcing construction conditions exist can be solved, and therefore reinforcing of the existing factory building is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of steel structure workshops, and in particular to a steel structure upper flange reinforcement structure, a steel structure workshop and a steel structure upper flange reinforcement method. Background Art

[0002] Steel structure has the advantages of light weight and high strength and is widely used in housing construction projects. Single-layer multi-span steel structure is a common hierarchical building form with the advantages of low construction difficulty, controllable cost, and convenient overlap. It is widely used in many industries and has achieved good results. With the strong support of the country for new energy, photovoltaic power generation has been taken seriously by everyone, so the demand for adding photovoltaics to steel structure roofs is increasing. Since the steel structure roof has less load, previous projects did not consider the addition of steel structure roofs with other functions such as photovoltaics, which is prone to unsatisfactory bearing capacity requirements. At present, the bearing capacity of steel structure roofs that do not meet the requirements is generally reinforced at the bottom of the steel beam, but for existing steel structure workshops, many goods or equipment will be set up in the workshop, which is not conducive to the reinforcement of the bottom of the steel beam. Summary of the invention

[0003] Based on this, it is necessary to provide a steel structure upper flange reinforcement structure, a steel structure factory building and a steel structure upper flange reinforcement method to address the technical problem that the existing factory buildings are difficult to reinforce.

[0004] A steel structure upper flange reinforcement structure, the steel structure upper flange reinforcement structure comprising:

[0005] Steel frame beams, a plurality of the steel frame beams are arranged at intervals along a first direction;

[0006] Purlins, a plurality of purlins are arranged on the steel frame beam and spaced apart along the second direction;

[0007] a roof panel, laid on the purlins;

[0008] A reinforcement beam connected to the steel frame beam, the extension direction of the reinforcement beam is consistent with the extension direction of the steel frame beam, and the purlin is connected to the reinforcement beam;

[0009] A C-shaped through groove is provided on the roof panel at a position corresponding to the reinforcement beam, and the portion enclosed and limited by the inner groove wall of the through groove on the roof panel is defined as a folding portion, and the folding portion can be folded relative to the roof panel so that the opening enclosed by the outer groove wall of the through groove can be opened, so that the reinforcement beam can be placed on the steel frame beam from the opening.

[0010] In one of the embodiments, a side of the reinforcing beam facing the roof panel is flush with the purlin.

[0011] In one embodiment, a U-shaped avoidance groove is provided at a position corresponding to the purlin on the reinforcement beam, the groove width of the avoidance groove is not greater than the web thickness of the purlin plus 2 mm, and the avoidance groove is used to provide avoidance space for the purlin;

[0012] Alternatively, a receiving groove is provided on the purlin at a position corresponding to the reinforcing beam, the groove width of the receiving groove is not greater than the web thickness of the reinforcing beam plus 2 mm, and the receiving groove is used for the reinforcing beam to pass through.

[0013] In one embodiment, the reinforcement beam is constructed in a T-shape, the bottom of the web of the reinforcement beam is welded and fixed to the steel frame beam, and the purlin is welded and fixed to the web.

[0014] In one of the embodiments, the roof panel is configured as a structure in which planar portions and raised portions are alternately arranged, and the C-shaped through groove is constructed as a square groove.

[0015] In one embodiment, the through groove comprises a first groove section and a second groove section which are connected to each other, the first groove section is arranged on the plane portion, and an extension direction of the first groove section is along an extension direction of the plane portion;

[0016] The second groove section extends along the alternating directions of the planar portions and the convex portions, and the second groove section spans over at least one of the planar portions and at least one of the convex portions.

[0017] In one embodiment, the steel structure upper flange reinforcement structure further includes:

[0018] A first connecting steel plate is disposed in the first groove section, wherein one side of the first connecting steel plate is located below the roof plate and is fixedly connected to the roof plate, and the other side of the first connecting steel plate is located above the folding portion and is fixedly connected to the folding portion;

[0019] The first waterproof layer is arranged on the roof board and covers the first groove section.

[0020] In one embodiment, the steel structure upper flange reinforcement structure further includes:

[0021] A second connecting steel plate is disposed above the second slot section and covers the second slot section;

[0022] The second waterproof layer is arranged above the second connecting steel plate and covers the second connecting steel plate.

[0023] A steel structure factory building comprises the steel structure upper flange reinforcement structure as described above.

[0024] A method for reinforcing an upper flange of a steel structure, the method for reinforcing an upper flange of a steel structure is used to reinforce the upper flange reinforcement structure of the steel structure as described above, and the method for reinforcing an upper flange of a steel structure comprises the following steps:

[0025] A plurality of hanging points arranged at intervals are arranged on the roof plate, the hanging points are connected to a crane, and the roof plate and the steel frame beam are suspended by the crane;

[0026] A C-shaped through groove is opened on the roof plate, and the reinforcing beam is hoisted to the position of the through groove, inserted into the purlin, and placed above the steel frame beam;

[0027] Welding and fixing the reinforcement beam to the purlin and the steel frame beam;

[0028] The C-shaped through grooves on the roof plate are overlapped by galvanized steel plates, and waterproof coiled materials and waterproof coatings are used for waterproof protection.

[0029] Beneficial effects of the present invention:

[0030] The present invention provides a steel structure upper flange reinforcement structure, which includes a steel frame beam, a purlin, a roof panel and a reinforcement beam. A plurality of steel frame beams are arranged at intervals along a first direction, a plurality of purlins are arranged at intervals along a second direction, and the purlins are connected to the steel frame beams, so that the steel frame beams and the purlins form a grid structure to support the roof panel. The reinforcement beams are arranged on the steel frame beams to reinforce the steel frame beams, thereby reinforcing the grid structure supporting the roof panel. In the present application, a C-shaped through groove is arranged at a position corresponding to the reinforcement beam on the roof panel, so that the inner groove wall of the through groove is surrounded on the roof panel to define a folding portion, and the folding portion can be folded relative to the roof panel, so that the opening surrounded by the outer wall of the through groove can be opened, thereby facilitating the reinforcement connection to be placed on the steel frame beam from the opening. Such an arrangement can solve the problem of no reinforcement construction conditions for existing steel structure factories, thereby realizing the reinforcement of existing factories. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 The upper flange reinforcement structure of the steel structure provided by one embodiment of the present invention is a top view when the roof surface is installed;

[0032] Figure 2 A side view of a steel structure factory building provided by an embodiment of the present invention;

[0033] Figure 3 A side view of a steel structure factory building provided by an embodiment of the present invention without a roof surface installed;

[0034] Figure 4 A schematic diagram of the distribution of lifting points when a steel structure factory building is unloaded provided by an embodiment of the present invention;

[0035] Figure 5 A schematic diagram of a partial structure of a steel structure upper flange reinforcement structure provided by an embodiment of the present invention;

[0036] Figure 6 for Figure 5 The cross-sectional view is taken along AA;

[0037] Figure 7 A schematic diagram of an avoidance groove provided on a reinforcement beam in a steel structure upper flange reinforcement structure provided in an embodiment of the present invention;

[0038] Figure 8 A schematic diagram of providing a receiving groove on a purlin in a steel structure upper flange reinforcement structure provided by an embodiment of the present invention;

[0039] Fig. 9 A schematic diagram of the positional relationship between purlins and reinforcement beams in a steel structure upper flange reinforcement structure provided by an embodiment of the present invention;

[0040] Fig.10 A partially enlarged schematic diagram of a through groove of a steel structure upper flange reinforcement structure provided by an embodiment of the present invention;

[0041] Fig.11 for Fig.10 Sectional view along the middle edge 1-1;

[0042] Fig.12 for Fig.10 A cross-sectional view along the middle line 2-2;

[0043] Fig.13 A schematic flow chart of a method for reinforcing an upper flange of a steel structure provided in accordance with an embodiment of the present invention.

[0044] Reference numerals:

[0045] Steel frame beam 100; purlin 200; accommodating groove 210; roof plate 300; through groove 310; folding portion 320; plane portion 330; raised portion 340; reinforcement beam 400; avoidance groove 410; first connecting steel plate 500; first waterproof layer 600; second connecting steel plate 700; second waterproof layer 800; steel column 910; tie rod 920; cross diagonal rod 930; hanging point 940; bolt 950. DETAILED DESCRIPTION

[0046] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0047] In the description of the present invention, 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 invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0048] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0049] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0050] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0051] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0052] Steel structure has the advantages of light weight and high strength and is widely used in housing construction projects. Single-layer multi-span steel structure is a common hierarchical building form with the advantages of low construction difficulty, controllable cost, and convenient overlap. It is widely used in many industries and has achieved good results. With the strong support of the country for new energy, photovoltaic power generation has been taken seriously by everyone, so the demand for adding photovoltaics to steel structure roofs is increasing. Since the steel structure roof has less load, previous projects did not consider the addition of steel structure roofs with other functions such as photovoltaics, which is prone to unsatisfactory bearing capacity requirements. At present, the bearing capacity of steel structure roofs that do not meet the requirements is generally reinforced at the bottom of the steel beam, but for existing steel structure workshops, many goods or equipment will be set up in the workshop, which is not conducive to the reinforcement of the bottom of the steel beam.

[0053] In view of the above problems, the present invention provides a steel structure upper flange reinforcement structure, which provides a through groove on the roof plate so that the existing roof plate where the reinforcement beam is required can be uncovered to expose the opening for placing the reinforcement beam on the steel frame beam. This arrangement can solve the problem of no reinforcement construction conditions for existing steel structure workshops, thereby achieving reinforcement of existing workshops.

[0054] See also Figures 1 to 12 An embodiment of the present invention provides a steel structure upper flange reinforcement structure, the steel structure upper flange reinforcement structure comprises a steel frame beam 100, a purlin 200, a roof plate 300 and a reinforcement beam 400, a plurality of steel frame beams 100 are arranged at intervals along a first direction; a plurality of purlins 200 are arranged on the steel frame beam 100 and are arranged at intervals along a second direction; the roof plate 300 is laid on the purlin 200; the reinforcement beam 400 is connected to the steel frame beam 100, and the extension direction of the reinforcement beam 400 is the same as that of the steel frame beam 100. The extension direction of the beam 100 is consistent, and the purlin 200 is connected to the reinforcement beam 400; wherein, a C-shaped through groove 310 is opened at a position corresponding to the reinforcement beam 400 on the roof panel 300, and the portion enclosed and defined by the inner groove wall of the through groove 310 on the roof panel 300 is defined as a folding portion 320, and the folding portion 320 can be folded relative to the roof panel 300 so that the opening enclosed by the outer groove wall of the through groove 310 can be opened, so as to facilitate the reinforcement beam 400 to be placed on the steel frame beam 100 from the opening.

[0055] The technical solution provides a steel structure upper flange reinforcement structure, which includes a steel frame beam 100, a purlin 200, a roof panel 300 and a reinforcement beam 400. A plurality of steel frame beams 100 are arranged at intervals along a first direction, a plurality of purlins 200 are arranged at intervals along a second direction, and the purlins 200 are connected to the steel frame beams 100, so that the steel frame beams 100 and the purlins 200 form a grid structure to support the roof panel 300. The reinforcement beam 400 is arranged on the steel frame beam 100 to reinforce the steel frame beam 100, thereby reinforcing the grid structure supporting the roof panel 300. In the present application, a C-shaped through groove 310 is arranged at a position corresponding to the reinforcement beam 400 on the roof plate 300, so that the inner groove wall of the through groove 310 encloses and defines a folding portion 320 on the roof plate 300, and the folding portion 320 can be folded relative to the roof plate 300, so that the opening surrounded by the outer wall of the through groove 310 can be opened, and then the reinforcement beam 100 can be placed on the steel frame beam 100 from the opening. Such an arrangement can solve the problem of no reinforcement construction conditions for existing steel structure workshops, thereby realizing the reinforcement of existing workshops.

[0056] It can be understood that, in this embodiment, Figure 5 and Fig. 9 As shown, the steel frame beam 100 is an I-beam, the purlin 200 is a Z-beam, and the purlin 200 is welded and fixed to the steel frame beam 100. The roof panel 300 is welded and fixed to the purlin 200, and the reinforcement beam 400 is also welded and fixed to the steel frame beam 100. When the reinforcement beam 400 is fixed to the steel frame beam 100 and the steel frame beam 100 is reinforced, the folding portion 320 can rotate in a direction close to the reinforcement beam 400 and block the through groove 310 to prevent the roof from leaking. The roof panel 300 is configured as a color steel plate.

[0057] like Figure 6 As shown, in one embodiment, the side of the reinforcing beam 400 facing the roof panel 300 is flush with the purlin 200. By setting the top surfaces of the reinforcing beam 400 and the purlin 200 to be flush, when the roof panel 300 is set on the purlin 200, the reinforcing beam 400 can support the roof panel 300, so that the roof panel 300 is connected to the reinforcing beam 400 and the purlin 200 at the same time, thereby improving the structural strength of the upper flange reinforcement structure of the entire steel structure.

[0058] like Figure 7As shown, in one embodiment, a U-shaped avoidance groove is provided at a position corresponding to the purlin 200 on the reinforcement beam 400, and the groove width of the avoidance groove is not greater than the web thickness of the purlin 200 plus 2 mm, and the avoidance groove is used to provide an avoidance space for the purlin 200. By providing an avoidance groove at a position corresponding to the purlin 200 on the reinforcement beam 400, so that the purlin 200 can be avoided through the avoidance groove, when the reinforcement beam 400 is added to the steel frame beam 100, the purlin 200 does not need to be destroyed, and the reinforcement beam 400 can be set above the steel frame beam 100. Thereby, the integrity of the purlin 200 is ensured, thereby ensuring the structural strength of the flange reinforcement structure of the entire steel structure, and also ensuring the convenience of adding the reinforcement beam 400. Specifically, there is no limitation on the structure of the avoidance groove on the reinforcement beam 400 , as long as it can be ensured that when the reinforcement beam 400 is installed on the steel frame beam 100 , the reinforcement beam 400 will not interfere with the purlin 200 .

[0059] like Figure 8 As shown, it can be understood that, in order to facilitate the setting of the reinforcement beam 400 on the steel frame beam 100, there is no interference between the purlin 200 and the reinforcement beam 400. In another embodiment, a receiving groove 210 is provided at a position corresponding to the reinforcement beam 400 on the purlin 200, and the groove width of the receiving groove 210 is not greater than the web thickness of the reinforcement beam 400 plus 2, and the receiving groove 210 is used for the reinforcement beam 400 to pass through. By providing the receiving groove 210 on the purlin 200, when the reinforcement beam 400 is set on the steel frame beam 100, the part of the reinforcement beam 400 interfering with the purlin 200 can be accommodated in the receiving groove 210, thereby ensuring that the reinforcement beam 400 can be connected to the steel frame beam 100, and at the same time, the top surface of the reinforcement beam 400 can be flush with the top surface of the purlin 200.

[0060] Specifically, in this embodiment, the reinforcement beam 400 is a T-beam, and the purlin 200 is a Z-beam. The web of the T-beam is used to connect with the steel frame beam 100, and accordingly, the web of the reinforcement beam 400 needs to be accommodated in the receiving groove 210 on the purlin 200. In this way, only a "I"-shaped receiving groove 210 needs to be provided on the purlin 200.

[0061] like Figure 6 As shown, in one embodiment, the reinforcing beam 400 is constructed in a T-shape, the bottom of the web of the reinforcing beam 400 is welded and fixed to the steel frame beam 100, and the purlin 200 is welded and fixed to the web. The reinforcing beam 400 is set as a T-beam, which can simplify the structure of the reinforcing beam 400 while ensuring the reinforcement of the supporting structure of the roof panel 300, and is also conducive to the connection between the reinforcing beam 400 and the steel frame beam 100.

[0062] like Fig.12As shown, in one embodiment, the roof panel 300 is configured as a structure in which a flat surface portion and a raised portion are alternately arranged, and the C-shaped through groove 310 is constructed as a square groove. By arranging the roof panel 300 in a form in which a flat surface portion and a raised portion are alternately arranged, the strength of the roof panel 300 is enhanced by the raised portion. The C-shaped through groove 310 is arranged as a square groove, which has a simple structure and is convenient for grooving. It can be understood that in this embodiment, the C-shaped square groove is grooved on three sides and not grooved on one side, so that the above-mentioned folding portion 320 is formed on the roof panel 300. When it is necessary to arrange the reinforcement beam 400 on the steel frame beam 100, the folding portion 320 is lifted up so that an opening is formed at the position corresponding to the folding portion 320, so that it is convenient to put the reinforcement beam 400 from the opening into the steel frame beam 100. After the reinforcement beam 400 is connected to the steel frame beam 100 and the purlin 200 , the folded portion 320 is turned over and then the turned over portion is connected to the reinforcement beam 400 and the purlin 200 .

[0063] Specifically, the plane portion is arranged to be a plane, and the protrusion portion is arranged to be protruding relative to the plane portion, thus forming a structure in which the plane and the protrusion are alternately arranged.

[0064] In one embodiment, the through groove 310 includes a first groove section and a second groove section that are interconnected, the first groove section is arranged on the planar portion, and the extension direction of the first groove section is along the extension direction of the planar portion; the second groove section extends along the alternating direction of the planar portion and the raised portion, and the second groove section spans at least one planar portion and at least one raised portion.

[0065] It can be understood that the first groove section and the second groove section are both straight groove sections. The first groove section is arranged on the plane part, and the first groove section extends along the extension direction of the plane part, so that the arrangement is convenient for grooving. The second groove section is extended along the intersection direction of the plane part and the raised part, so that a square groove in the shape of a plate ring is formed on the roof plate 300. As a preferred embodiment, two first groove sections can be respectively arranged on two spaced plane parts, and then the second groove section connects the two first groove sections to form the above-mentioned C-shaped through groove 310. The second groove section spans at least one plane part and at least one raised part, so that the folding part 320 formed by the inner groove wall of the through groove 310 can facilitate the placement of the reinforcement beam 400 from the opening formed by the folding part 320 to the steel frame beam 100.

[0066] like Fig.10 and Fig.11As shown, in one embodiment, the upper flange reinforcement structure of the steel structure also includes a first connecting steel plate 500 and a first waterproof layer 600. The first connecting steel plate 500 is arranged in the first groove section. The first connecting steel plate 500 is located on one side of the first groove section, and is located below the roof panel 300 and fixedly connected to the roof panel 300, and the other side is located above the folding portion 320 and fixedly connected to the folding portion 320. The first waterproof layer 600 is arranged on the roof panel 300 and covers the first groove section.

[0067] The first groove section is filled by arranging the first connecting steel plate 500 in the first groove section. By arranging one side of the first connecting steel plate 500 located in the first groove section below the roof panel 300 and arranging the other side of the first connecting steel plate 500 above the folding portion 320, the folding portion 320 can be pressed down and fixed by the first connecting steel plate 500, and the reliability of the first connecting steel plate 500, the roof panel 300 and the folding portion 320 after lap joint can be improved by staggered overlap. The first waterproof layer 600 is covered on the first groove section to prevent water leakage at the first groove section.

[0068] Specifically, the first connecting steel plate 500 is fixedly connected to the roof plate 300 by bolts, and the first connecting steel plate 500 is also fixedly connected to the folding portion 320 by bolts. More specifically, two rows of bolts are arranged at intervals between the first connecting steel plate 500 and the roof plate 300, and correspondingly, two rows of bolts are also arranged at intervals between the first connecting steel plate 500 and the folding portion 320. The bolts are self-tapping bolts, and when the automatic bolts are connected to the first connecting steel plate 500, the roof plate 300 and the folding portion 320, a sealant is applied to the self-tapping bolts to seal the gaps between the self-tapping bolts and the first connecting steel plate 500, the roof plate 300 and the folding portion 320, thereby preventing water leakage at the self-tapping bolts.

[0069] It is understood that the width of the overlapped portion of the first connecting steel plate 500, the roof plate 300 and the folding portion 320 is at least 250 mm. The first connecting steel plate 500 is configured as a galvanized steel plate with a thickness of 1 mm. The first waterproof layer 600 can at least cover the entire first groove section, and the first waterproof layer 600 exceeds the edge of the first connecting steel plate 500 by at least 200 mm. In this embodiment, the first waterproof layer 600 is a thermoplastic polyolefin waterproof coiled material with a thickness of 1.8 mm. When laying the first waterproof layer 600, a 3 mm thick waterproof coating is applied on the first waterproof layer 600.

[0070] like Fig.10 and Fig.12As shown, in one embodiment, the upper flange reinforcement structure of the steel structure also includes a second connecting steel plate 700 and a second waterproof layer 800. The second connecting steel plate 700 is arranged above the second groove section and covers the second groove section; the second waterproof layer 800 is arranged above the second connecting steel plate 700 and covers the second connecting steel plate 700.

[0071] The second slot section is filled by arranging the second connecting steel plate 700 in the second slot section. Since the second slot section spans at least one plane portion and at least one convex portion, the second connecting steel plate 700 is directly laid above the second slot section to facilitate shielding the second slot section. The second slot section is covered with a second waterproof layer 800 to prevent water leakage at the second slot section.

[0072] Specifically, the second connecting steel plate 700 is fixedly connected to the flat portion and the raised portion on the roof plate 300 by bolts. The bolts are self-tapping bolts, and when the self-tapping bolts are connected to the second connecting steel plate 700, a sealant is applied to the self-tapping bolts to seal the gaps between the self-tapping bolts and the second connecting steel plate 700 and the roof plate 300, thereby preventing water leakage at the self-tapping bolts.

[0073] It is understandable that the second connecting steel plate 700 is configured as a galvanized steel plate with a thickness of 1 mm. The second waterproof layer 800 can at least cover the entire second slot section, and the second waterproof layer 800 exceeds the edge of the second connecting steel plate 700. One end of the second connecting steel plate 700 covers a protrusion, and the other end of the second connecting steel plate 700 covers a plane portion and extends to the inclined surface of another protrusion. The second waterproof layer 800 covers two adjacent protrusions and a plane portion located between the two adjacent protrusions. The two ends of the second waterproof layer 800 are respectively located on the plane portion that is away from the two adjacent protrusions. This arrangement is to improve the waterproof performance of the second slot section. It should be noted that the horizontal length of the second waterproof layer 800 covering the second slot section is not less than the uncovering length of the second slot section on the horizontal plane plus 500 mm, and sealant is applied around the second waterproof layer 800.

[0074] An embodiment of the present invention further provides a steel structure factory building, which includes the steel structure upper flange reinforcement structure as described above.

[0075] The steel structure factory building provided in this embodiment also includes steel columns 910, tie rods 920, and cross diagonal rods 930. A plurality of steel columns 910 are supported on the ground at intervals, and one end of the steel column 910 is fixedly connected to the ground. The steel frame beam 100 is fixedly connected to the steel column 910 so that the steel column 910 supports the steel frame beam 100. The purlin 200 is fixedly connected to the steel frame beam 100, and then the roof plate 300 is covered on the frame formed by the purlin 200 and the steel frame beam 100, thereby forming the roof of the steel structure factory building. The tie rod 920 is perpendicular to the steel frame beam 100, and a plurality of tie rods 920 are arranged at intervals. The tie rod 920 is connected to the steel frame beam 100. The tie rod 920 and the steel frame beam 100 form a grid structure. Two intersecting cross diagonal rods 930 are arranged in each grid, and the cross diagonal rods 930 are connected to the vertices of the grid. In this way, the supporting strength of the roof is improved.

[0076] It should be noted that the steel structure upper flange reinforcement structure provided in this embodiment is suitable for the steel structure factory building where the original single-span portal steel frame has been completed. The steel structure factory building includes the steel frame beam 100, steel column 910, tie rod 920, cross diagonal rod 930, purlin 200, and roof panel 300, which have all been completed. On this basis, the steel frame beam 100 is reinforced. In order to reduce the stress when connecting the reinforced beam 400, the original steel frame roof needs to be unloaded. Specifically, a number of hanging points 940 are set on the original steel frame roof for unloading. The unloading is carried out by hanging the original roof with a crane or other equipment, such as Figure 4 As shown. After the unloading work is completed, an L-shaped cut is made in the roof panel 300 at the wave crest within the length range that needs to be reinforced, and the roof panel 300 is opened. Then the flange of the roof purlin 200 is cut, and the newly added T-beam, which is the reinforcement beam 400, is cut perpendicular to the web direction of the purlin 200. The seam width is controlled to be no greater than the web thickness plus 2mm. After the T-beam is placed, the flange of the purlin 200 and the web of the T-beam are welded. The newly added T-beam is intermittently welded above the steel frame beam 100, as shown. Figures 3 to 6 As shown, the roof panel 300 is restored after welding is completed.

[0077] like Fig.13 As shown, an embodiment of the present invention further provides a method for reinforcing an upper flange of a steel structure, the method for reinforcing an upper flange of a steel structure is used to reinforce the upper flange reinforcement structure of a steel structure as claimed in the claim, and the method for reinforcing an upper flange of a steel structure comprises the following steps:

[0078] S100, setting a plurality of hanging points at intervals on the roof plate, connecting the hanging points to a crane, and suspending the roof plate and the steel frame beam by the crane;

[0079] S200, a C-shaped through groove is opened on the roof plate, the reinforcement beam is hoisted to the position of the through groove, inserted into the purlin, and placed above the steel frame beam;

[0080] S300, welding and fixing the reinforcement beam to the purlin and steel frame beam;

[0081] S400, the C-shaped grooves on the roof panels are overlapped with galvanized steel plates, and waterproof membranes and waterproof coatings are used for waterproof protection.

[0082] It can be understood that the hanging point is an unloading point for unloading. Before reinforcing the upper flange of the steel structure, a crane is used to suspend it at the unloading point on the steel frame beam so that the initial stress of the steel frame beam meets the design requirements. The hanging crane and the hanging point can only be removed after the construction of the reinforced beam is completed.

[0083] A C-shaped through slot is opened on the roof plate to facilitate the placement of the reinforcement beam on the purlin and the steel frame beam. Specifically, the reinforcement beam is hoisted to the position of the through slot, the plate body corresponding to the C-shaped through slot on the roof plate is untied, the reinforcement beam is inserted into the purlin, and placed on the top of the steel frame beam. The reinforcement beam is then fixed to the steel frame beam by welding.

[0084] For the horizontal cuts of the roof plate, 1mm thick galvanized steel plates are used for overlap, and waterproof coils and waterproof coatings are used for waterproof protection; for the cuts at the crests, 1mm thick galvanized steel plates are used for overlap transition, and the transition steel plate crosses a crest, and its horizontal length should be greater than the uncovered length by not less than 500mm, and waterproof coils and waterproof coatings are laid on top for waterproof protection, and the waterproof coils and waterproof coatings should cross a crest. The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, all possible combinations of the technical features in the above-mentioned embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0085] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A steel structure upper flange reinforcement structure, characterized in that: The steel structure upper flange reinforcement structure comprises: Steel frame beams, a plurality of the steel frame beams are arranged at intervals along a first direction; Purlins, a plurality of purlins are arranged on the steel frame beam and spaced apart along the second direction; a roof panel, laid on the purlins; A reinforcement beam connected to the steel frame beam, the extension direction of the reinforcement beam is consistent with the extension direction of the steel frame beam, and the purlin is connected to the reinforcement beam; A C-shaped through groove is provided on the roof panel at a position corresponding to the reinforcement beam, and the portion enclosed and limited by the inner groove wall of the through groove on the roof panel is defined as a folding portion, and the folding portion can be folded relative to the roof panel so that the opening enclosed by the outer groove wall of the through groove can be opened, so that the reinforcement beam can be placed on the steel frame beam from the opening.

2. The steel structure upper flange reinforcement structure according to claim 1, characterized in that: The side of the reinforcing beam facing the roof panel is flush with the purlin.

3. The steel structure upper flange reinforcement structure according to claim 1, characterized in that: A U-shaped avoidance groove is provided on the reinforcement beam at a position corresponding to the purlin, the groove width of the avoidance groove is not greater than the web thickness of the purlin plus 2 mm, and the avoidance groove is used to provide an avoidance space for the purlin; Alternatively, a receiving groove is provided on the purlin at a position corresponding to the reinforcing beam, the groove width of the receiving groove is not greater than the web thickness of the reinforcing beam plus 2 mm, and the receiving groove is used for the reinforcing beam to pass through.

4. The steel structure upper flange reinforcement structure according to claim 1, characterized in that: The reinforcement beam is constructed in a T-shape, the bottom of the web of the reinforcement beam is welded and fixed to the steel frame beam, and the purlin is welded and fixed to the web.

5. The steel structure upper flange reinforcement structure according to claim 1, characterized in that: The roof plate is configured as a structure in which flat portions and raised portions are alternately arranged, and the C-shaped through groove is constructed as a square groove.

6. The steel structure upper flange reinforcement structure according to claim 5, characterized in that: The through groove comprises a first groove section and a second groove section which are connected to each other, wherein the first groove section is arranged on the plane portion, and an extending direction of the first groove section is along an extending direction of the plane portion; The second groove section extends along the alternating directions of the planar portions and the convex portions, and the second groove section spans over at least one of the planar portions and at least one of the convex portions.

7. The steel structure upper flange reinforcement structure according to claim 6, characterized in that: The steel structure upper flange reinforcement structure also includes: A first connecting steel plate is disposed in the first groove section, wherein one side of the first connecting steel plate is located below the roof plate and is fixedly connected to the roof plate, and the other side of the first connecting steel plate is located above the folding portion and is fixedly connected to the folding portion; The first waterproof layer is arranged on the roof board and covers the first groove section.

8. The steel structure upper flange reinforcement structure according to claim 6, characterized in that: The steel structure upper flange reinforcement structure also includes: A second connecting steel plate is disposed above the second slot section and covers the second slot section; The second waterproof layer is arranged above the second connecting steel plate and covers the second connecting steel plate.

9. A steel structure factory building, characterized in that: The steel structure factory building includes the steel structure upper flange reinforcement structure as described in any one of claims 1-8.

10. A method for reinforcing the upper flange of a steel structure, characterized in that: The steel structure upper flange reinforcement method is used to reinforce the steel structure upper flange reinforcement structure according to any one of claims 1 to 8, and the steel structure upper flange reinforcement method comprises the following steps: A plurality of hanging points arranged at intervals are arranged on the roof plate, the hanging points are connected to a crane, and the roof plate and the steel frame beam are suspended by the crane; A C-shaped through groove is opened on the roof plate, and the reinforcing beam is hoisted to the position of the through groove, inserted into the purlin, and placed above the steel frame beam; Welding and fixing the reinforcement beam to the purlin and the steel frame beam; The C-shaped through grooves on the roof plate are overlapped by galvanized steel plates, and waterproof coiled materials and waterproof coatings are used for waterproof protection.

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