Composite steel member

Abstract

The invention relates to the technical field of building structures, in particular to a composite steel member which comprises a steel member shell formed by connecting at least two sub-shells end to end. The stiffening structure is arranged in the steel structure shell and is used for fixedly connecting the sub-shells; and the at least two elastic pieces are arranged in the steel structure shell and are used for connecting the two sub-shells at opposite positions or the two sub-shells at adjacent positions. And the arranged elastic pieces provide anti-seismic buffering for the sub-shells, the situation of structural failure caused by rigid damage is reduced, and the non-deformability and the bearing capacity of the steel structure shell are effectively improved.

Description

Technical Field

[0001] The present application relates to the technical field of building structures, and in particular to composite steel components. Background Art

[0002] Steel structures are widely used in modern buildings, and their node connection methods are crucial to the stability and safety of the overall structure. At present, steel structure node connections mainly adopt two traditional methods: welding or bolting. Welding connections can provide higher stiffness and strength, but they are prone to stress concentration under dynamic loads, leading to brittle fracture in the weld area. Although bolted connections are easy to install and disassemble, they may loosen or slip under repeated loads, affecting the overall performance of the structure. Especially under extreme load conditions such as earthquakes, both connection methods show obvious limitations - the rigid destruction of welded nodes and the accumulation of plastic deformation of bolted connections will lead to structural failure. Summary of the Invention

[0003] The purpose of the present application is to provide a composite steel member having strong earthquake resistance and deformation resistance.

[0004] In order to achieve the above-mentioned purpose, the composite steel member provided in this application includes: A steel shell formed by connecting at least two sub-shells end to end; A stiffening structure provided in the steel shell for fixedly connecting the sub-shells; At least two elastic members are arranged in the steel structure shell and are used to connect the two sub-shells in opposite positions or the two sub-shells in adjacent positions.

[0005] In an optional embodiment, the sub-shell is an arc-shaped shell, and the at least two sub-shells are connected end to end to form the steel structure shell having a circular cross-section perpendicular to the length direction.

[0006] In an optional embodiment, the sub-shell includes a first plate body and a second plate body that forms an angle α with the first plate body. In the at least two sub-shells, the first plate body of one sub-shell is connected to the second plate body of another sub-shell, so that the at least two sub-shells are connected end to end to form the polygonal steel structure shell.

[0007] In an optional embodiment, a first connecting portion is provided on one end of the first plate away from the second plate, and the first connecting portion extends toward the interior of the steel structure shell; A second connecting portion is provided on one end of the second plate away from the first plate, and the second connecting portion extends into the interior of the steel structure shell; The first connecting portion and the second connecting portion provide a mounting basis for the fixed connection between adjacent sub-shells and the fixed connection of the stiffening structure.

[0008] In an optional embodiment, the stiffening structure includes at least two stiffening plates, the stiffening plates are fixedly connected to each other, and ends of the stiffening plates are connected to the first connecting portion and the second connecting portion.

[0009] In an optional embodiment, the stiffening plate includes a first end portion and a second end portion connected to each other, and an angle β is formed between the first end portion and the second end portion.

[0010] In an optional embodiment, an assembly through hole for passing the elastic member is formed on the first end portion and the second end portion.

[0011] In an optional embodiment, foam concrete is poured into the steel structure shell.

[0012] In an optional embodiment, an isolation tube is provided on the outer sleeve of the elastic member.

[0013] In an optional embodiment, an end portion of the isolation tube is connected to an inner wall of the sub-shell.

[0014] In the present application, the elastic members provided provide seismic buffering for the sub-shell, reduce structural failures due to rigidity damage, and effectively improve the deformation resistance and bearing capacity of the steel structure shell.

[0015] Other features and advantages of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 A schematic structural diagram of one embodiment of a composite steel member provided in this application from one perspective; Figure 2 A schematic structural diagram from one perspective of one embodiment of a sub-shell of a composite steel member provided in this application; Figure 3 A schematic structural diagram of one embodiment of a stiffening plate of a composite steel member provided in the present application from one perspective; Figure 4A schematic structural diagram from one perspective of another embodiment of the composite steel member provided by the present application; Figure 5 A schematic structural diagram from one perspective of another embodiment of a sub-shell of a composite steel member provided in the present application; Figure 6 A schematic structural diagram of another embodiment of a stiffening plate of a composite steel member provided by the present application from one perspective; Figure 7 A schematic structural diagram from one perspective of another embodiment of the composite steel member provided by the present application; Figure 8 A schematic structural diagram from one perspective of another embodiment of a sub-shell of a composite steel member provided in the present application; Figure 9 A schematic structural diagram from one perspective of another embodiment of a stiffening plate of a composite steel member provided in the present application; Figure 10 This is a structural schematic diagram from one perspective of another embodiment of the composite steel component provided by the present application.

[0018] icon: 100 - steel shell; 110 - sub-shell; 120 - first plate; 130 - second plate; 140 - first connecting portion; 150 - second connecting portion; 200-stiffening plate; 210-first end; 220-second end; 300-foam concrete; 400-Isolation tube; 500-Elastic parts. DETAILED DESCRIPTION

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all of the embodiments. Generally, the components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0020] In the description of this application, it should be noted that the terms "inner" and "outer" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or the orientations or positional relationships in which the product of this application is typically placed when in use. These terms are intended solely to facilitate the description of this application and simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first" and "second" and the like are used solely for distinction and should not be construed as indicating or implying relative importance.

[0021] It should also be noted that, in the description of this application, unless otherwise expressly specified or limited, the terms "disposed" and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0022] An embodiment of the present application provides a composite steel member, including a steel shell 100 , a stiffening structure, and an elastic member 500 .

[0023] like Figure 1 、 Figure 4 or Figure 7 As shown, the steel shell 100 is formed by connecting at least two sub-shells 110 end to end. The steel shell 100 has an internal space and can at least be used for supporting or bearing weight.

[0024] Exemplarily, two sub-housings 110 are provided. In another embodiment, three sub-housings 110 are provided. In another embodiment, four sub-housings 110 are provided. Of course, other numbers of sub-housings 110 can also be provided, such as five, six, or seven.

[0025] Exemplarily, the sub-shells 110 are fixedly connected by welding, bolting, riveting, or clamping.

[0026] The sub-shells 110 are connected end to end to form Figure 1 The cylindrical steel shell 100 shown, or a polygonal steel shell 100; the polygonal steel shell 100 is for example Figure 4 The triangular prism steel shell 100 shown in FIG. 1 may be formed as shown in FIG. Figure 7 The quadrangular prism-shaped steel shell 100 is shown.

[0027] The stiffening structure is disposed within the steel shell 100 , and the stiffening plates 200 are used to securely connect the sub-shells 110 to enhance the connection strength between the sub-shells 110 , thereby increasing the strength of the steel shell 100 .

[0028] The stiffening plate 200 and the steel shell 100 bear the force together, transferring the local load to the overall structure to avoid single-point overload.

[0029] For example, the fixing connection between the reinforcing structure and the sub-shell 110 is achieved by welding, bolt connection, riveting or clamping.

[0030] The elastic member 500 can be stretched and rebounded, and there are at least two elastic members 500. The elastic member 500 is disposed in the steel shell 100 and is used to apply tension to the sub-shell 110.

[0031] Exemplarily, the end of the elastic member 500 is fixedly connected to the sub-housing 110 by welding, clamping or threaded connection.

[0032] For example, Figure 4 As shown, the elastic member 500 is used to connect two sub-shells 110 in adjacent positions. However, in other embodiments, such as Figure 1 or Figure 7 As shown, the elastic member 500 is used to connect the two sub-shells 110 in relative positions. The elastic member 500 provides shock absorption for the sub-shells 110, reduces structural failure due to rigidity damage, and effectively improves the deformation resistance and bearing capacity of the steel shell 100.

[0033] The elastic member 500 can provide nonlinear stiffness, maintain structural stability under slight deformation, and cushion impact through large deformation under extreme loads to avoid brittle failure.

[0034] Exemplarily, the elastic member 500 includes, but is not limited to, a coil spring, a wave spring, a butterfly spring, an annular spring, a leaf spring, a steel plate spring, or an air spring.

[0035] like Figure 2 As shown, in one embodiment, the sub-housing 110 is an arc-shaped shell; Figure 1 As shown, at least two sub-shells 110 are connected end to end to form a steel shell 100 having a circular cross-section perpendicular to the length direction.

[0036] For example, the sub-shell 110 is a semicircular shell, and two sub-shells 110 are connected end to end to form a cylindrical steel shell 100. In another embodiment, as shown in FIG. Figure 1 As shown, four sub-shells 110 are provided, and the sub-shells 110 are provided in a semicircular shell shape. The four sub-shells 110 are connected end to end to form a cylindrical steel structure housing 100 .

[0037] For example, Figure 3 As shown, the stiffening structure is configured as two L-shaped plates that are fixedly connected, and the fixing method is, for example, welding, clamping, bolting or riveting.

[0038] Exemplarily, the end of the L-shaped plate is fixedly connected to the sub-housing 110 by, for example, welding, clamping, bolting or riveting.

[0039] Different from the technical solution of the above embodiment in which the sub-shell 110 is composed of a steel shell 100 with a circular cross section, Figure 5 or Figure 8 As shown, in one embodiment, the sub-housing 110 includes a first plate 120 and a second plate 130 which is at an angle α to the first plate 120, wherein α=30°, 45°, 90° or 180°. Figure 5 As shown, the angle α between the first plate 120 and the second plate 130 is 180°. In another embodiment, as shown in FIG. Figure 8 As shown, the included angle α between the first plate 120 and the second plate 130 is 90°.

[0040] Exemplarily, the first plate body 120 and the second plate body 130 are fixedly connected by welding or integral molding.

[0041] like Figure 4 or Figure 7 As shown, the first plate 120 of one sub-shell 110 is connected to the second plate 130 of another sub-shell 110, so that at least two sub-shells 110 are connected end to end to form a polygonal steel shell 100. Figure 4 As shown, three sub-shells 110 are provided, and the angle α between the first plate 120 and the second plate 130 of the sub-shell 110 is 180°. The three sub-shells 110 are connected end to end to form a triangular prism-shaped steel structure shell 100. In another embodiment, four sub-shells 110 are provided, and the angle α between the first plate 120 and the second plate 130 of the sub-shell 110 is 90°. The four sub-shells 110 are connected end to end to form a quadrangular prism-shaped steel structure shell 100. Of course, the sub-shells 110 can also form a pentagonal prism-shaped steel structure shell 100 or a hexagonal prism-shaped steel structure shell 100, etc., which will not be described in detail in this application. The following takes the case where four sub-shells 110 are provided and the quadrangular prism-shaped steel structure shell 100 as an example to explain the technical solution of this application.

[0042] like Figure 7 or Figure 8 As shown, in one embodiment, a first connecting portion 140 is provided on one end of the first plate 120 away from the second plate 130, and the first connecting portion 140 extends into the interior of the steel structure shell 100. Exemplarily, the first connecting portion 140 is fixedly connected to the first plate 120 by welding or integral molding.

[0043] A second connecting portion 150 is provided on one end of the second plate 130 away from the first plate 120. The second connecting portion 150 extends into the interior of the steel shell 100. For example, the second connecting portion 150 is fixedly connected to the second plate 130 by welding or integral molding.

[0044] The first connection portion 140 and the second connection portion 150 provide a mounting base for the fixed connection between adjacent sub-shells 110 and the fixed connection of the stiffening structure. For example, the first connection portion 140 of the first plate 120 of one sub-shell 110 is fixedly connected to the second connection portion 150 of the second plate 130 of another adjacent sub-shell 110. The fixed connection method is, for example, welding, threaded connection, clamping or riveting, so that the two adjacent sub-shells 110 are fixedly connected. For example, as Figure 7 As shown, the reinforcing structure is fixedly connected to the first connection portion 140 and the second connection portion 150 so that the reinforcing structure is fixedly connected to the sub-shell 110. The fixed connection method is, for example, welding, threaded connection, clamping or riveting.

[0045] The first and second connecting portions 140, 150 extend into the interior of the steel shell 100, eliminating the stress concentration points or collision risks that occur with conventional protruding connectors (such as flanges and lugs). This reduces the risk of structural damage due to stress concentration and the collision risk associated with protruding structures, thereby improving safety and reliability.

[0046] The first connecting portion 140 and the second connecting portion 150 extend into the interior of the steel shell 100 and also facilitate the connection between the sub-shell 110 and the stiffening structure.

[0047] The first connection part 140 and the second connection part 150 are hidden inside the steel structure shell 100, reducing direct contact with the external environment, especially reducing the risk of corrosion caused by environmental factors such as rain, thereby extending the service life of the connection parts and ensuring the long-term stable operation of the mechanical structure.

[0048] The first connecting portion 140 and the second connecting portion 150 provide special installation positions for the fixed connection between adjacent sub-shells 110 and the fixed connection of the stiffening structure, ensuring that the sub-shells 110 and the sub-shells 110 and the stiffening structure can be stably and reliably connected together.

[0049] like Figure 7 As shown, in one embodiment, the stiffening structure includes at least two stiffening plates 200 . The stiffening plates 200 are fixedly connected to each other, and ends of the stiffening plates 200 are connected to the first connecting portion 140 and the second connecting portion 150 .

[0050] For example, Figure 7As shown, two stiffening plates 200 are provided, and the two stiffening plates 200 are fixedly connected, and the fixing methods include welding, bolting, clamping or riveting. In another embodiment, four stiffening plates 200 are provided, and the four stiffening plates 200 are fixedly connected to form a cross-shaped stiffening structure, and the four stiffening plates 200 are respectively fixedly connected to the four sub-shells 110, and the fixing methods include welding, bolting, clamping or riveting. Of course, other numbers of stiffening plates 200 can be provided. The stiffening plates 200 combined together can jointly bear and disperse the load on the mechanical structure, and can strengthen the steel structure shell 100 from multiple directions, effectively resist stress and deformation in different directions, greatly enhancing the strength and stability of the entire mechanical structure, so that it can withstand greater external forces without damage or excessive deformation.

[0051] The ends of the stiffening plate 200 are connected to the first connecting portion 140 and the second connecting portion 150, so that the stiffening structure can be tightly integrated with the sub-housing 110. The stiffening plate 200 can effectively transfer and disperse the stress on the sub-housing 110, avoid local stress concentration, and improve reliability.

[0052] like Figure 6 or Figure 8 As shown, in one embodiment, the stiffening plate 200 includes a first end portion 210 and a second end portion 220 connected to each other, and an angle β is formed between the first end portion 210 and the second end portion 220. For example, as Figure 9 As shown, the angle β between the first end 210 and the second end 220 is 90°. Figure 6 As shown, the included angle β between the first end 210 and the second end 220 is 120°. Of course, the included angle β between the first end 210 and the second end 220 can also be other angles, such as 30° or 45°.

[0053] In order to avoid interference between the reinforcing structure and the elastic member 500, in one embodiment, the first end portion 210 and the second end portion 220 are provided with assembly through holes for passing the elastic member 500. For example, Figure 7 As shown, one end of the elastic member 500 is connected to one sub-housing 110 , and the other end of the elastic member 500 passes through the through hole on the first end portion 210 or the second end portion 220 and is then connected to the other sub-housing 110 .

[0054] In mechanical structures, stiffening structures primarily enhance overall strength and stability, while elastic members 500 typically perform specific functions such as cushioning, shock absorption, or providing elastic force. The provision of assembly holes at the first end 210 and the second end 220 effectively prevents spatial interference between the stiffening structure and the elastic member 500. This allows the stiffening structure and the elastic member 500 to function properly in their respective predetermined positions and functional states.

[0055] By providing the assembly through-holes, a reasonable spatial channel is provided for the installation and arrangement of the elastic member 500 , making the layout more compact and reasonable.

[0056] To further increase the strength of the steel shell 100, Figure 10 As shown, in one embodiment, foam concrete 300 is poured into the steel shell 100 .

[0057] The foamed concrete 300 possesses a certain strength. Once poured into the steel shell 100, it can withstand external forces together with the steel shell 100. The steel shell 100 provides the primary tensile, bending, and shear resistance, while the foamed concrete 300, through its inherent compressive properties, shares some of the load, thereby enhancing the overall structure's load-bearing capacity and enabling it to withstand greater weight and external pressure.

[0058] The foamed concrete 300 fills the interior of the steel shell 100, making the structure more substantial and reducing the deformation space of the steel shell 100. When subjected to external forces, the steel shell 100 and the foamed concrete 300 work together to resist deformation, effectively increasing the rigidity of the structure, improving its stability and deformation resistance, and reducing the risk of damage due to excessive deformation.

[0059] Foamed concrete 300 can evenly fill the voids within the steel shell 100, effectively distributing stress within the structure. It can disperse localized high stresses over a wider area, preventing stress concentration within the steel shell 100 and reducing structural fatigue and damage caused by stress concentration, thereby extending the structure's service life.

[0060] If the elastic member 500 is stuck by impurities, it will cause the expansion resistance to increase or even failure. In order to prevent the foam concrete 300 or other impurities from entering the elastic member 500 and affecting the expansion performance of the elastic member 500, Figure 10 As shown, in one embodiment, the elastic member 500 is provided with an isolation tube 400 on its outer shell.

[0061] Isolation tube 400 isolates elastic member 500 from the outside world, reducing the ingress of foamed concrete 300 or foreign matter into elastic member 500 and ensuring the elasticity of elastic member 500. During precast concrete component production, isolation tube 400 prevents concrete from seeping into elastic member 500 during pouring, thus preventing cracking due to failure of elastic member 500 during subsequent structural settlement.

[0062] The isolation tube 400 isolates the elastic member 500 from the external environment, reducing the degree of surface contamination of the elastic member 500, and the performance can be directly tested without deep cleaning during maintenance; if the elastic member 500 needs to be replaced, it is only necessary to remove the end connector of the isolation tube 400 without destroying the shell structure.

[0063] To reduce the indentation of the steel shell 100, Figure 10 As shown, in one embodiment, the end of the isolation tube 400 is connected to the inner wall of the sub-shell 110 to increase the shell wall strength of the limited sub-shell 110, reduce the indentation of the sub-shell 110, and also improve the strength of the sub-shell 110 and the steel structure shell 100.

[0064] Exemplarily, the isolation tube 400 is passed through the assembly through hole of the stiffening plate 200 .

[0065] The isolation tube 400 completely wraps the elastic member 500 to form a physical barrier, effectively preventing impurities such as foam concrete 300, sand, gravel, and dust from entering the elastic member 500.

[0066] A wiring space may be reserved inside the isolation tube 400 or a sensor (such as a strain gauge or a displacement sensor) may be installed to monitor the working status of the elastic member 500 in real time and provide data support for the structural health monitoring system.

[0067] It should be noted that, unless there is any conflict, the features in the embodiments of this application can be combined with each other.

[0068] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A composite steel member, characterized in that: include: A steel structure housing (100) formed by connecting at least two sub-housings (110) end to end; A stiffening structure provided in the steel structure shell (100) for fixedly connecting the sub-shells (110); At least two elastic members (500) are arranged in the steel structure shell (100) and are used to connect the two sub-shells (110) in opposite positions or the two sub-shells (110) in adjacent positions.

2. The composite steel member according to claim 1, wherein: The sub-shell (110) is an arc-shaped shell, and the at least two sub-shells (110) are connected end to end to form the steel structure outer shell (100) having a circular cross-section in a direction perpendicular to the length.

3. The composite steel member according to claim 1, wherein: The sub-shell (110) comprises a first plate (120) and a second plate (130) which forms an angle α with the first plate (120); in the at least two sub-shells (110), the first plate (120) of one sub-shell (110) is connected to the second plate (130) of another sub-shell (110), so that the at least two sub-shells (110) are connected end to end to form the polygonal prism-shaped steel structure shell (100).

4. The composite steel member according to claim 3, wherein: A first connecting portion (140) is provided on one end of the first plate body (120) away from the second plate body (130), and the first connecting portion (140) extends toward the interior of the steel structure shell (100); A second connecting portion (150) is provided on one end of the second plate body (130) away from the first plate body (120), and the second connecting portion (150) extends toward the interior of the steel structure shell (100); The first connecting portion (140) and the second connecting portion (150) provide a mounting basis for the fixed connection between adjacent sub-shells (110) and the fixed connection of the stiffening structure.

5. The composite steel member according to claim 4, characterized in that The stiffening structure comprises at least two stiffening plates (200), the stiffening plates (200) are fixedly connected to each other, and the ends of the stiffening plates (200) are connected to the first connecting portion (140) and the second connecting portion (150).

6. The composite steel member according to claim 5, characterized in that The stiffening plate (200) comprises a first end portion (210) and a second end portion (220) connected to each other, and an angle β is formed between the first end portion (210) and the second end portion (220).

7. The composite steel member according to claim 6, characterized in that The first end portion (210) and the second end portion (220) are provided with assembly through holes for passing the elastic member (500).

8. The composite steel member according to claim 1, wherein: Foamed concrete (300) is poured into the steel structure shell (100).

9. The composite steel member according to claim 1, wherein: An isolation tube (400) is provided on the outer shell of the elastic member (500).

10. The composite steel member according to claim 9, characterized in that The end of the isolation tube (400) is connected to the inner wall of the sub-shell (110).

Images