C-shaped steel purline folded steel reinforcing and strengthening method

Abstract

The invention discloses a C-shaped steel purline bent steel reinforcing method which comprises the steps that a plurality of pieces of wave-shaped bent steel are installed in a C-shaped steel purline, each wave-shaped bent steel is formed by bending a plurality of units, the two units at the two ends of each wave-shaped bent steel are concave surface flat plate units, and the middle unit is a convex surface flat plate unit; a plurality of folded steel side plates are respectively arranged between the two concave surface flat plate units and the convex surface flat plate unit, the concave surface flat plate units are connected with the web plate through a plurality of rows of self-tapping screws, and the convex surface flat plate unit is connected with the short limb web plate through a plurality of self-tapping screws. The overall stability of the C-shaped steel purline is effectively improved through the structural form of the wave-shaped bent steel, the local thickness of the web is enhanced, the moment of inertia is correspondingly improved, and therefore the bending resistance and shear resistance of the structure are effectively improved, and the reinforcing scheme is suitable for a traditional steel structure and can also be used in modern industrial buildings. Particularly, under the condition that additional loads such as photovoltaic panels are borne, the stability and the bearing capacity of the steel structure are remarkably improved.

Description

[0001] Methodology Area

[0002] The invention belongs to the field of steel structure component reinforcement methods, and in particular relates to a C-shaped steel purlin folding reinforcement method.

[0003] Background Methods

[0004] With the continuous development of the construction industry, steel structures are increasingly used in buildings, especially in large industrial buildings, storage facilities and commercial buildings. C-shaped steel purlins are important structural components and are widely used to support roofs and walls. In recent years, with the diversification of industrial plant functions, many steel structure buildings also need to be equipped with photovoltaic panel systems to meet green energy-saving needs. Therefore, C-shaped steel purlins not only need to bear traditional structural loads, but also the weight of additional photovoltaic panels and the wind loads and temperature changes they generate.

[0005] However, as the building's service life increases and the external environment changes, C-shaped steel purlins will suffer from varying degrees of corrosion, fatigue and deformation, resulting in a decrease in their strength and stability, thus affecting the safety and durability of the entire building structure. Especially in industrial plants that carry photovoltaic panels, the local stability and bearing capacity of C-shaped steel purlins are particularly important. Therefore, effectively reinforcing existing C-shaped steel purlins to ensure their long-term stable operation has become an important issue that needs to be solved in the field of construction engineering.

[0006] Traditional reinforcement methods for C-shaped steel purlins mainly include replacing new steel purlins, increasing the cross-section, adding external reinforcement materials, etc. However, these methods usually have problems such as high construction costs, long construction periods, and destructiveness to the original structure. In addition, the installation of photovoltaic panels usually requires additional modifications to the original steel structure, which makes the selection of reinforcement solutions more complicated. In addition, traditional reinforcement methods often require a large number of construction workers and equipment, and the construction process is cumbersome and irreversible, which improves the stability of the structure while increasing the difficulty and cost of subsequent maintenance.

[0007] In order to make up for the shortcomings of the existing methods, it is necessary to provide an innovative folded steel reinforcement method, which aims to solve the local stability problems faced by steel structures when bearing additional loads such as photovoltaic panels by improving the reinforcement effect and application scope of C-shaped steel purlins. It not only effectively enhances the bearing capacity and stability of steel structures, but also provides a more efficient and economical solution, providing new ideas for the reinforcement of building steel structures. Summary of the invention

[0008] The method problem to be solved by the present invention is to provide a C-shaped steel purlin folded steel reinforcement method in view of the shortcomings of the above-mentioned existing methods. The method connects the corrugated folded steel with the web and corrugated folded steel of the C-shaped steel purlin, and effectively improves the overall stability of the C-shaped steel purlin through the structural form of the corrugated folded steel, so that the local thickness of the web is enhanced, thereby effectively improving the bending and shearing resistance of the structure, and significantly improving the stability and bearing capacity of the steel structure in modern industrial buildings, especially when carrying additional loads such as photovoltaic panels.

[0009] In order to solve the problem of the above method, the method scheme adopted by the present invention is: a C-shaped steel purlin folded steel reinforcement method, characterized in that the method includes installing multiple corrugated folded steels in the C-shaped steel purlin, the C-shaped steel purlin includes a web, flanges are arranged at both ends of the web, short-limb webs are arranged on the two flanges facing each other, the corrugated folded steel is composed of a plurality of bent units, the two units at both ends of the corrugated folded steel are concave flat plate units, the middle unit is a convex flat plate unit, and a plurality of folded steel side plates are respectively arranged between the two concave flat plate units and the convex flat plate units, the concave flat plate unit is connected to the web by multiple rows of self-tapping screws, and the convex flat plate unit and the short-limb web are connected by multiple self-tapping screws.

[0010] The above-mentioned C-shaped steel purlin folded steel reinforcement method is characterized in that multiple pieces of the corrugated folded steel are connected end to end, and the total length of the multiple pieces of corrugated folded steel connected end to end is equal to the length of the C-shaped steel purlin.

[0011] The above-mentioned C-shaped steel purlin folding steel reinforcement method is characterized in that the corrugated folded steel is obtained by folding and deforming a piece of material.

[0012] The above-mentioned C-shaped steel purlin folded steel reinforcement method is characterized in that the height of the corrugated folded steel is the same as the height inside the C-shaped steel purlin, the width of each unit of the corrugated folded steel is 1 / 4 to 1 / 2 of the height, and the width of the convex flat plate is equal to the width of the concave flat plate.

[0013] The above-mentioned C-shaped steel purlin folding reinforcement method is characterized in that the bending angles of the multiple folded steel side plates are 90° to 150°.

[0014] The above-mentioned C-shaped steel purlin folding reinforcement method is characterized in that the total thickness of the concave flat plate unit and the C-shaped purlin web meets the requirement that the width-to-thickness ratio limit does not exceed 60.

[0015] The above-mentioned C-shaped steel purlin folding reinforcement method is characterized in that the total thickness of the convex flat plate unit and the short-leg web meets the requirement that the width-to-thickness ratio limit does not exceed 80.

[0016] The above-mentioned C-shaped steel purlin folded steel reinforcement method is characterized in that the material of the corrugated folded steel is steel, aluminum alloy or an alloy material with a strength of not less than 235MPa.

[0017] Compared with the existing methods, the present invention has the following advantages:

[0018] 1. The present invention connects the corrugated folded steel with the web and corrugated folded steel of the C-shaped steel purlin, and effectively improves the overall stability of the C-shaped steel purlin through the structural form of the corrugated folded steel, so that the local thickness of the web is enhanced, and the moment of inertia is correspondingly improved, thereby effectively improving the bending and shearing resistance of the structure. This reinforcement scheme is not only suitable for traditional steel structures, but also can significantly improve the stability and bearing capacity of steel structures in modern industrial buildings, especially when carrying additional loads such as photovoltaic panels, and shows excellent effects in enhancing the local stability and bearing capacity of C-shaped steel purlins.

[0019] 2. The present invention adopts the method of connecting corrugated folded steel with C-shaped steel purlins and fixing them with self-tapping screws, which can significantly simplify the construction process. There is no need for large-scale transformation, and the construction process is more efficient. It not only greatly reduces the construction cost, but also shortens the construction time. It is particularly suitable for industrial plants and other occasions that require rapid transformation and reinforcement. In addition, the simplified construction process also reduces the damage to the original structure, reduces the difficulty and cost of maintenance after reinforcement, and significantly improves the economy and operability of the overall reinforcement project. It solves the problem of traditional reinforcement methods, which usually require large-scale demolition and reconstruction, long construction period and high cost.

[0020] 3. The folded steel reinforcement method of the present invention has strong adaptability and flexibility, and can be adjusted according to the design requirements and specific working conditions of different steel structures. The shape, thickness and connection method of the corrugated folded steel can be tailored according to the specifications and load-bearing requirements of the C-shaped steel purlins, thereby ensuring the maximization of the reinforcement effect. Especially when additional facilities such as photovoltaic panels need to be installed, it can provide additional support for the steel structure to meet new load requirements. It is suitable for the reinforcement and renovation of various building steel structures, especially for the reinforcement and renovation of old steel structures. It has significant advantages and can effectively improve the structural performance and extend its service life.

[0021] 4. The corrugated folded steel of the present invention significantly improves the safety and durability of the C-shaped steel purlins and the entire building. With the widespread application of additional facilities such as photovoltaic panels in industrial plants, steel structures not only have to bear traditional building loads, but also need to cope with additional loads and the impact of environmental changes. The overall stability of the steel structure can be effectively enhanced to ensure that the structure does not deform or damage excessively under the additional load, thereby greatly extending the service life of the building. This reinforcement scheme reduces the need for repeated maintenance of the structure and reduces the maintenance cost in long-term use, further improving the overall economy and sustainability of the building.

[0022] The method scheme of the present invention is further described in detail below through the drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the connection relationship between the C-shaped steel purlin and the corrugated folded steel in the present invention.

[0024] Figure 2 It is a schematic diagram of the installation relationship between the C-shaped steel purlin and the corrugated folded steel in the present invention.

[0025] Figure 3 It is a schematic diagram of the structure of the corrugated folded steel in the present invention.

[0026] Description of reference numerals:

[0027] 1—C-shaped steel purlin; 2—corrugated folded steel; 3—web plate;

[0028] 4—flange; 5—short limb web; 6—concave flat plate element;

[0029] 7—convex flat plate unit; 8—folded steel side plate; 9—self-tapping screws. DETAILED DESCRIPTION

[0030] Example 1

[0031] like Figure 1 to Figure 3 As shown, the folded steel reinforcement method of the C-shaped steel purlin 1 of this embodiment includes installing multiple corrugated folded steels 2 in the C-shaped steel purlin 1, the C-shaped steel purlin 1 includes a web 3, flanges 4 are provided at both ends of the web 3, short-limb webs 5 are provided on the two flanges 4 facing each other, the corrugated folded steel 2 is composed of a plurality of bent units, the two units at both ends of the corrugated folded steel 2 are concave flat plate units 6, the middle unit is a convex flat plate unit 7, a plurality of folded steel side plates 8 are respectively provided between the two concave flat plate units 6 and the convex flat plate unit 7, the concave flat plate unit 6 is connected to the web 3 by multiple rows of self-tapping screws 9, and the convex flat plate unit 7 and the short-limb web 5 are connected by multiple self-tapping screws 9.

[0032] It should be noted that by installing multiple pieces of corrugated folded steel 2 in the C-shaped steel purlin 1 and connecting them through self-tapping screws 9, multiple effective reinforcement structures are formed to enhance the stability and bearing capacity of the C-shaped steel purlin 1.

[0033] It should be noted that, by designing a concave flat plate unit 6 on the corrugated folded steel 2, which is used to connect with the web 3 of the C-shaped steel purlin 1 through multiple rows of self-tapping screws 9, the thickness of the web 3 is locally enhanced, the local stability of the web 3 is further improved, and the deformation of the C-shaped steel purlin 1 is effectively prevented. By designing a convex flat plate unit 7 on the corrugated folded steel 2, which is used to connect with the short-leg web 5 of the C-shaped steel purlin 1 through multiple self-tapping screws 9, the stable connection between the corrugated folded steel 2 and the C-shaped steel purlin 1 is ensured, and by providing multiple folded steel side plates 8, a closed space is formed between the C-shaped steel purlin 1 and the corrugated folded steel 2, which significantly improves the moment of inertia of the area, enhances the overall bending resistance, stiffness and stability of the C-shaped purlin, and provides lateral support and transverse support for the web 3 and flange 4 of the C-shaped steel purlin 1, effectively enhancing the local stability of the web 3 and flange 4, improving the overall bearing capacity, making the structure more stable, and effectively preventing bending deformation under heavy load or external force.

[0034] It should be noted that the installation process of the corrugated folded steel 2 is simple, which can significantly improve construction efficiency, reduce construction period, and reduce construction costs. It has the characteristics of simple structure and convenient construction, and does not require complicated dismantling or replacement of the original C-shaped steel purlin 1. It has high economy and applicability, and can significantly improve the stability and safety of the C-shaped steel purlin 1. It can not only be widely used in the reinforcement of existing steel structures, but also can effectively extend the service life of the structure and reduce maintenance costs. It has good prospects for promotion and application.

[0035] It should be noted that the shape of the corrugated folded steel 2 can be corrugated or other suitable structural forms to enhance the combination effect between it and the C-shaped steel purlin 1 .

[0036] It should be noted that the selection of self-tapping screws 9 should be determined according to the materials used, load-bearing requirements and working environment. Screws with high tensile strength and corrosion resistance are usually used. The number and distribution of self-tapping screws 9 should be designed according to the length and stress conditions of the C-shaped steel purlin 1 to ensure a firm connection without affecting the stability of the original structure. The concave plate unit 6 is connected to the web 3 by more than two rows of self-tapping screws 9, and the convex plate unit 7 and the short-limb web 5 are connected by more than two self-tapping screws 9.

[0037] like Figure 1As shown, in this embodiment, multiple pieces of the corrugated folded steels 2 are connected end to end, and the total length of the multiple pieces of the corrugated folded steels 2 connected end to end is equal to the length of the C-shaped steel purlin 1. By connecting multiple pieces of the corrugated folded steels 2 end to end, the reinforcement effect is improved, and the total length of the corrugated folded steels 2 is ensured to be equal to the length of the C-shaped steel purlin 1, so that the C-shaped steel purlin 1 is reinforced with the corrugated folded steels 2 from beginning to end.

[0038] In this embodiment, the corrugated folded steel 2 is obtained by folding and deforming a piece of material. The corrugated folded steel 2 is obtained by folding and deforming a piece of material, thereby ensuring the structural strength of the corrugated folded steel 2, thereby improving the reinforcement effect.

[0039] In this embodiment, the height of the corrugated folded steel 2 is the same as the height inside the C-shaped steel purlin 1, the width of each unit of the corrugated folded steel 2 is 1 / 4 to 1 / 2 of the height, and the width of the convex flat plate is equal to the width of the concave flat plate. By making the height of the corrugated folded steel 2 the same as the height inside the C-shaped steel purlin 1, it is ensured that the corrugated folded steel 2 supports the inside of the C-shaped steel purlin 1, and by controlling the size of each unit of the corrugated folded steel 2, the reinforcement effect is improved.

[0040] In this embodiment, the bending angles of the folded steel side panels 8 are 90° to 150°. By controlling the bending angles of the folded steel side panels 8 to adapt to the actual stress conditions of the C-shaped steel purlin 1, it can provide sufficient support force, further optimize the support and reinforcement effects, and ensure the long-term stability of the structure.

[0041] In this embodiment, the total thickness of the concave flat plate unit 6 and the C-shaped purlin web 3 meets the requirement that the width-to-thickness ratio limit is not more than 60. By controlling the total thickness of the concave flat plate unit 6 and the C-shaped purlin web 3, that is, designing the thickness of the concave flat plate unit 6 according to the thickness of the C-shaped purlin web 3, the local stability is reasonably designed to ensure the best reinforcement effect and provide the maximum strength in practical applications.

[0042] In this embodiment, the total thickness of the convex flat plate unit 7 and the short limb web 5 meets the requirement that the width-to-thickness ratio limit does not exceed 80. By controlling the total thickness of the convex flat plate unit 7 and the short limb web 5, that is, designing the thickness of the convex flat plate unit 7 according to the thickness of the short limb web 5, the local stability is reasonably designed to ensure the best reinforcement effect and adapt to different load requirements and construction environments.

[0043] In this embodiment, the material of the corrugated folded steel 2 is steel, aluminum alloy or an alloy material with a strength of not less than 235 MPa. By controlling the material of the corrugated folded steel 2, the stability and durability of the reinforced structure in long-term use are guaranteed.

[0044] In actual use, firstly, the corrugated folded steel 2 is docked and positioned with the C-shaped steel purlin 1. By using a suitable positioning tool, ensure that the corrugated folded steel 2 and the web 3 and flange 4 of the C-shaped steel purlin 1 maintain the correct relative position. Then, use an electric tool to screw in the self-tapping screws 9, and gradually fix multiple pieces of corrugated folded steel 2 to the C-shaped steel purlin 1. During the installation process, attention should be paid to the tightening torque of the self-tapping screws 9 to avoid the reinforcement effect from being reduced due to the loosening of the self-tapping screws 9. After the installation is completed, the connection parts can be checked to ensure that the connection is firm and reliable.

[0045] In particular, the reinforced C-shaped steel purlin 1 should be regularly inspected during long-term use, especially in industrial plants or storage buildings that carry large additional loads. The tightening state of the self-tapping screws 9 connection parts and the stress of the folded steel should be regularly checked, and maintenance or replacement should be carried out in time to ensure the long-term stability of the reinforcement effect. During the use of additional facilities such as photovoltaic panels, special attention should be paid to stress changes caused by temperature changes or external environment to avoid excessive impact on the reinforced structure;

[0046] Through the above specific implementation methods, the folded steel reinforcement method of the present invention can effectively improve the local stability and bearing capacity of the C-shaped steel purlin 1, especially when carrying additional loads such as photovoltaic panels, providing a more efficient and economical solution.

[0047] The above is only a preferred embodiment of the present invention and does not limit the present invention in any way. Any simple modification, change and equivalent changes made to the above embodiments according to the essence of the method of the present invention still fall within the protection scope of the method of the present invention.

Claims

1. A C-shaped steel purlin folding reinforcement method, characterized in that: The method comprises installing a plurality of corrugated folded steels (2) in a C-shaped steel purlin (1), wherein the C-shaped steel purlin (1) comprises a web (3), both ends of the web (3) are provided with flanges (4), and short-limb webs (5) are provided on the two flanges (4) facing each other, the corrugated folded steel (2) is formed by bending a plurality of units, the two units at the two ends of the corrugated folded steel (2) are concave flat plate units (6), the middle unit is a convex flat plate unit (7), a plurality of folded steel side plates (8) are respectively provided between the two concave flat plate units (6) and the convex flat plate unit (7), the concave flat plate unit (6) is connected to the web (3) by a plurality of rows of self-tapping screws (9), and the convex flat plate unit (7) is connected to the short-limb web (5) by a plurality of self-tapping screws (9).

2. A C-shaped steel purlin folding reinforcement method according to claim 1, characterized in that: The plurality of corrugated folded steels (2) are connected end to end, and the total length of the plurality of corrugated folded steels (2) connected end to end is equal to the length of the C-shaped steel purlin (1).

3. A C-shaped steel purlin folding reinforcement method according to claim 1, characterized in that: The corrugated folded steel (2) is obtained by subjecting a piece of material to corrugated deformation.

4. A C-shaped steel purlin folding reinforcement method according to claim 1, characterized in that: The height of the corrugated folded steel (2) is the same as the height inside the C-shaped steel purlin (1), the width of each unit of the corrugated folded steel (2) is 1 / 4 to 1 / 2 of the height, and the width of the convex flat plate is equal to the width of the concave flat plate.

5. A C-shaped steel purlin folding reinforcement method according to claim 1, characterized in that: The bending angles of the plurality of folded steel side plates (8) are between 90° and 150°.

6. A C-shaped steel purlin folding reinforcement method according to claim 1, characterized in that: The total thickness of the concave flat plate unit (6) and the C-shaped purlin web (3) meets the requirement that the width-to-thickness ratio limit does not exceed 60.

7. A C-shaped steel purlin folding reinforcement method according to claim 1, characterized in that: The total thickness of the convex flat plate unit (7) and the short limb web (5) meets the requirement that the width-to-thickness ratio limit does not exceed 80.

8. A C-shaped steel purlin folding reinforcement method according to claim 1, characterized in that: The material of the corrugated folded steel (2) is steel, aluminum alloy or an alloy material with a strength not less than 235 MPa.

Images