Modular steel structure beam end multi-stage energy dissipation connecting joint and steel structure building

Abstract

The present application relates to a kind of modular steel structure beam end multi-stage energy dissipation connecting node and its steel structure building, wherein, connecting node includes symmetrically arranged first energy dissipation structure and second energy dissipation structure, and shear transfer structure is arranged between first energy dissipation structure and second energy dissipation structure;First energy dissipation structure and second energy dissipation structure are horizontally arranged, both are connected first building component in one end, and the other end is connected second building component;The first end of shear transfer structure is connected first building component, and the second end is connected second building component;First energy dissipation structure and second energy dissipation structure can gradually occur buckling and yield deformation when connecting node is stressed;Shear transfer structure can transmit shear force between first building component and second building component when stressed.Its beneficial effects are that it realizes the independent adjustment of the stiffness and carrying capacity of energy dissipation node while ensuring the equivalent initial stiffness with existing node.

Description

Technical Field

[0001] This invention relates to the field of modular steel structure building technology, and in particular to a multi-stage energy-dissipating connection node at the beam end of a modular steel structure and a steel structure building. Background Technology

[0002] Connection nodes are a crucial part of building structures, responsible for firmly connecting beams and columns to ensure the overall stability and safety of the building.

[0003] Currently, to improve the performance of structural beams, energy dissipation nodes are often set at the beam ends. However, the energy dissipation connection nodes used in existing traditional prefabricated steel structures are mainly designed around the seismic concept of strong column-weak beam, strong shear-weak bending, and strong node-weak component. Existing energy dissipation connection nodes have the following problems: while focusing on improving energy dissipation, the stiffness of the node will also increase. Under seismic loads, excessive node stiffness will cause the building components around the node to fail before the node, which is not conducive to the overall continuity and stability of the building structure. Therefore, it is difficult to coordinate the load-bearing capacity and stiffness of energy dissipation connection nodes. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a modular steel structure beam end multi-stage energy dissipation connection node and steel structure building, which solves the technical problem that it is difficult to independently control the bearing capacity and stiffness of the modular steel structure beam end multi-stage energy dissipation connection node.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the main technical solutions adopted by the present invention include:

[0008] In a first aspect, embodiments of the present invention provide a modular steel structure beam-end multi-stage energy-dissipating connection node, including a first energy-dissipating structure and a second energy-dissipating structure symmetrically arranged, and a shear force transmission structure disposed between the first energy-dissipating structure and the second energy-dissipating structure;

[0009] The first energy-consuming structure and the second energy-consuming structure are arranged horizontally, with one end of each structure connected to the first building component and the other end connected to the second building component;

[0010] The first end of the shear force transmission structure is connected to the first building component, and the second end is connected to the second building component;

[0011] Both the first energy-dissipating structure and the second energy-dissipating structure are capable of gradually buckling and yielding deformation when the connection node is subjected to force.

[0012] The shear force transmission structure is capable of transmitting shear force between the first building component and the second building component when subjected to force.

[0013] Optionally, in the modular steel structure beam-end multi-stage energy-dissipating connection node, the first energy-dissipating structure and the second energy-dissipating structure are identical.

[0014] The first energy-consuming structure includes a plurality of energy-consuming steel plates arranged horizontally at intervals. One end of each energy-consuming steel plate is used to connect to the first building component, and the other end is used to connect to the second building component.

[0015] Optionally, the modular steel structure beam end multi-stage energy-dissipating connection node has an energy-dissipating steel plate with a preset slenderness ratio.

[0016] Optionally, the modular steel structure beam end multi-stage energy dissipation connection node, the first energy dissipation structure further includes a first load-bearing plate;

[0017] The first load-bearing plate is disposed parallel to the energy-consuming steel plate between the energy-consuming steel plate and the shear force transmission structure.

[0018] Optionally, in the modular steel structure beam-end multi-stage energy-dissipating connection node, the first load-bearing plate is spaced apart from the energy-dissipating steel plate and the shear force transmission structure.

[0019] Optionally, the modular steel structure beam end multi-stage energy dissipation connection node, the shear force transmission structure includes a first connector and a second connector;

[0020] One end of the first connector is used to connect to the first building component, and one end of the second connector is used to connect to the second building component;

[0021] The first connector and the second connector are hinged to each other so that the second connector can rotate about the first connector in the vertical plane where the second building component is located.

[0022] Optionally, the modular steel structure beam end multi-stage energy dissipation connection node, the shear force transmission structure further includes a horizontal pin shaft;

[0023] The first connector includes two opposing first ear plates, which are parallel to the vertical plane in which the second building component is located;

[0024] The second connector is a second ear plate that is parallel to the first ear plate;

[0025] The second ear plate is located between the two first ear plates, and the second ear plate and the two first ear plates are connected by the horizontal pin.

[0026] Optionally, the modular steel structure beam end multi-stage energy dissipation connection node further includes a symmetrically arranged third energy dissipation structure and a fourth energy dissipation structure;

[0027] The third and fourth energy-dissipating structures are arranged perpendicularly to the horizontal direction on both sides of the shear force transmission structure.

[0028] Both the third and fourth energy-dissipating structures can gradually buckle and yield when the connection node is subjected to force.

[0029] Secondly, embodiments of the present invention provide a steel structure building, including the connection node, the first building component, and the second building component described in the first aspect.

[0030] The first building component is a column and / or a main beam, and the second building component is a main beam and / or a secondary beam.

[0031] (III) Beneficial Effects

[0032] The beneficial effects of this invention are as follows: The modular steel structure beam-end multi-stage energy-dissipating connection node and steel structure building of this invention, because energy-dissipating structures are set above and below the shear force transmission structure, allow both energy-dissipating structures to gradually buckle and yield under stress when the node is subjected to force. This enables the internal components of the energy-dissipating structures to fail sequentially under increasing seismic loads, thus playing a multi-stage energy-dissipating role, effectively decomposing seismic forces and improving the energy dissipation capacity of the node. Furthermore, the shear force transmission structure can transfer shear force between the two building components under stress. Compared to existing technologies, this energy-dissipating connection node, while maintaining equivalent initial stiffness to existing nodes, achieves independent adjustment of the stiffness and bearing capacity of the energy-dissipating node, further effectively improving the overall mechanical performance of the steel structure building. Attached Figure Description

[0033] Figure 1 This is a three-dimensional schematic diagram of a modular steel structure beam-end multi-stage energy-dissipating connection node and a steel structure building according to Embodiment 1 of the present invention.

[0034] Figure 2 This is a three-dimensional schematic diagram of a steel structure building according to Embodiment 2 of the present invention, which is a modular steel structure beam-end multi-stage energy-dissipating connection node and a steel structure building.

[0035] Figure 3 for Figure 2 An exploded view of a steel structure building;

[0036] Figure 4 This is another perspective view of the steel structure building according to Embodiment 2 of the present invention.

[0037] [Explanation of Labels in the Attached Image]

[0038] 1: Energy-dissipating connection node; 11: First energy-dissipating structure; 111: Energy-dissipating steel plate; 112: First load-bearing plate; 12: Second energy-dissipating structure; 13: Shear force transmission structure; 131: First connector; 132: Second connector; 133: Horizontal pin; 2: First building component; 3: Second building component; 4: Connection end. Detailed Implementation

[0039] This invention proposes a modular steel structure beam-end multi-stage energy-dissipating connection node and steel structure building, addressing the technical problem of the difficulty in independently controlling the bearing capacity and stiffness of the modular steel structure beam-end multi-stage energy-dissipating connection node. Energy-dissipating structures are installed above and below the shear force transmission structure. When the node is under stress, both energy-dissipating structures can gradually undergo buckling and yielding deformation. Under gradually increasing seismic forces, the internal components of the energy-dissipating structures can experience sequential stress failure, thus playing a multi-stage energy-dissipating role and effectively decomposing seismic forces. Compared with existing technologies, this invention, while ensuring equivalent initial stiffness to existing nodes, achieves independent adjustment of the stiffness and bearing capacity of the energy-dissipating node, further effectively improving the overall mechanical performance of the steel structure building.

[0040] To better understand the above technical solutions, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present invention can be understood more clearly and thoroughly, and that the scope of the present invention can be fully conveyed to those skilled in the art.

[0041] Example 1:

[0042] Reference Figure 1 and Figure 2This embodiment provides a modular steel structure beam-end multi-stage energy-dissipating connection node, including a symmetrically arranged first energy-dissipating structure 11 and second energy-dissipating structure 12, and a shear force transfer structure 13 disposed between the first energy-dissipating structure 11 and the second energy-dissipating structure 12. The first energy-dissipating structure 11 and the second energy-dissipating structure 12 are horizontally arranged, each connected at one end to a first building component 2 and at the other end to a second building component 3. The first end of the shear force transfer structure 13 is connected to the first building component 2, and the second end is connected to the second building component 3, that is, the first energy-dissipating structure 11 and the second energy-dissipating structure 12 are respectively arranged above and below the shear force transfer structure 13. When the energy-dissipating connection node 1 is subjected to force, both the first energy-dissipating structure 11 and the second energy-dissipating structure 12 can gradually undergo buckling and yielding deformation to achieve energy dissipation and maintain the stability of the node and the building structure to which it is located. When subjected to force, the shear force transfer structure 13 can transfer shear force between the first building member 2 and the second building member 3. The shear force transfer structure 13 is used to transfer the shear force at the end of one building member to the other building member connected to it, so that the entire building structure can correctly bear and distribute the load, and ultimately ensure the safety and stability of the structure.

[0043] Energy dissipation structures are installed above and below the shear force transmission structure 13. When the nodes are under stress,

[0044] Both energy-dissipating structures are capable of gradually buckling and yielding deformation, and can play a multi-stage energy-dissipating role under gradually increasing seismic forces, effectively decomposing seismic forces. While ensuring equivalence with the initial stiffness of existing nodes, they achieve independent adjustment of the stiffness and bearing capacity of energy-dissipating nodes, further effectively improving the overall mechanical performance of steel structure buildings.

[0045] Reference Figure 1 and Figure 2 This embodiment provides a modular steel structure beam end multi-stage energy-dissipating connection node. The first energy-dissipating structure 11 and the second energy-dissipating structure 12 are identical in structure and symmetrically arranged with respect to the shear force transmission structure 13. This ensures that the mechanical properties on both sides of the shear force transmission structure 13 are consistent. In the event of an earthquake or other similar situation, the energy dissipation capacity on both sides is consistent, which helps maintain the stability of the overall node structure. This embodiment is described with reference to the first energy-dissipating structure 11, and the second energy-dissipating structure 12 is referenced to the first energy-dissipating structure 11. The first energy-dissipating structure 11 includes multiple horizontally spaced energy-dissipating steel plates 111. One end of each energy-dissipating steel plate 111 is used to connect to the first building component 2, and the other end is used to connect to the second building component 3. Each energy-dissipating steel plate 111 has a preset slenderness ratio according to the mechanical performance design requirements. Taking the energy-dissipating steel plate 111 as an example, the slenderness ratio refers to the ratio of the length of the energy-dissipating steel plate 111 to the end face area. For example, refer to Figure 1The slenderness ratio of the energy-dissipating steel plate 111 in the middle is smaller than that of the energy-dissipating steel plates 111 on both sides; alternatively, energy-dissipating steel plates 111 with large and small slenderness ratios are arranged alternately, depending on the specific needs, and no specific limitation is made here. The alternating arrangement of energy-dissipating steel plates 111 with different slenderness ratios can establish an energy-dissipating hierarchy. Under earthquake conditions, the energy-dissipating steel plates 111 with smaller slenderness ratios buckle and yield later than the energy-dissipating steel plates 111 with larger slenderness ratios, achieving stepwise energy dissipation from earthquakes. The specific calculation method for the slenderness ratio of the energy-dissipating steel plate 111 is based on existing technology and will not be detailed here.

[0046] Reference Figure 1 and Figure 2 This embodiment provides a modular steel structure beam-end multi-stage energy-dissipating connection node. The first energy-dissipating structure 11 further includes a first load-bearing plate 112, which is parallel to the energy-dissipating steel plate 111 and disposed between the energy-dissipating steel plate 111 and the shear force transmission structure 13. The stiffness of the first load-bearing plate 112 is greater than that of the energy-dissipating steel plate 111. The first load-bearing plate 112 is a steel plate, which provides initial strength for the energy-dissipating connection node 1. On the other hand, when all the energy-dissipating steel plates 111 buckle and yield under external force, the first load-bearing plate 112 plays a role and further yields to dissipate energy. That is, the design of the first load-bearing plate 112 further increases the energy dissipation steps of the first energy-dissipating structure 11. Specifically, the energy-dissipating steel plate 111 and the first load-bearing plate 112 are designed separately, which effectively improves the bending stiffness and load-bearing capacity of the connection node. When the seismic action gradually increases, the energy-dissipating connection node 1 can successively experience four energy-dissipating stages: elastic stage, buckling of the energy-dissipating steel plate 111 with a large slenderness ratio, buckling of the energy-dissipating steel plate 111 with a small slenderness ratio, and yielding of the first load-bearing plate 112, which greatly improves the energy dissipation capacity of the node.

[0047] The working principle of the first load-bearing plate 112 and the energy-dissipating steel plate 111 is as follows: By controlling the buckling instability behavior of a portion of the energy-dissipating steel plates 111, the initial stiffness of the node is ensured. Simultaneously, the load-bearing capacity of the node is independently adjustable, preventing an increase in node stiffness that would otherwise accompany an increase in load-bearing capacity, effectively avoiding the drawbacks of increased node stiffness. By combining energy-dissipating steel plates 111 with different slenderness ratios, the initial cross-sectional stiffness is provided by all energy-dissipating steel plates 111. Specifically, energy-dissipating steel plates 111 with a large slenderness ratio form a buckling energy-dissipating segment, controlling the buckling region of the node and achieving controllable peak nonlinear load-bearing capacity; energy-dissipating steel plates 111 with a small slenderness ratio form a yield energy-dissipating segment, maintaining the nonlinear load-bearing capacity of the node. Ultimately, the load-bearing capacity and stiffness of the node components are independently adjustable.

[0048] It should be noted that when the installation space of the connection node is limited, the rigidity of a portion of the energy-dissipating steel plate 111 can be increased, thus eliminating the need to install the first load-bearing plate.

[0049] Reference Figure 1 and Figure 2 This embodiment provides a modular steel structure beam end multi-stage energy dissipation connection node. The first load-bearing plate 112, the energy dissipation steel plate 111, and the shear force transmission structure 13 are spaced apart to provide space for the energy dissipation deformation of the first load-bearing plate 112, which also ensures the normal operation of the shear force transmission structure 13.

[0050] Reference Figure 1 and Figure 2 The energy-dissipating connection node 1 and shear force transmission structure 13 provided in this embodiment include a first connector 131 and a second connector 132. The first connector 131 and the second connector 132 are hinged to each other by a shear pin. The non-hinged end of the first connector 131 is used to connect to the first building component 2, and the non-hinged end of the second connector 132 is used to connect to the second building component 3. Under stress, the second connector 132, which is hinged to 131, can rotate around the first connector 131 in the vertical plane where the second building component 3 is located.

[0051] Reference Figure 1 and Figure 2 In this embodiment, the first connecting member 131 includes two opposing first ear plates, which are parallel to the vertical plane where the second building component 3 is located. The second connecting member 132 is a second ear plate parallel to the first ear plates, located between the two first ear plates. The second ear plate and the two first ear plates are connected by a horizontal pin 133, such as a shear pin. The two first ear plates clamp the second ear plate, which can further limit the horizontal misalignment between them.

[0052] Reference Figure 1 and Figure 2The connection node provided in this embodiment may further include a third energy-dissipating structure and a fourth energy-dissipating structure (not shown in the figure) arranged opposite each other, according to the stiffness requirements of the connection node section. The third and fourth energy-dissipating structures are arranged perpendicularly to the horizontal direction on both sides of the shear force transmission structure 13. In this way, the first energy-dissipating structure 11, the second energy-dissipating structure 12, the third energy-dissipating structure, and the fourth energy-dissipating structure form a sleeve-like space in spatial position. The two ends of the sleeve-like space correspond to the two ends of the shear force transmission structure 13 for connecting the building components. Of course, the above four energy-dissipating structures are arranged independently of each other. The third and fourth energy-dissipating structures can gradually undergo buckling and yielding deformation when the energy-dissipating connection node 1 is subjected to force. The specific structure of the third and fourth energy-dissipating structures can be referred to the first energy-dissipating structure 11 and the second energy-dissipating structure 12, and will not be repeated here. It should be noted that the setting of the third and fourth energy-dissipating structures can further improve the section stiffness of the node, which is suitable for situations where a large section stiffness of the node is required.

[0053] Example 2:

[0054] Reference Figure 2 , Figure 3 and Figure 4 This embodiment provides a steel structure building, including the energy-dissipating connection node 1, the first building component 2, and the second building component 3 as described in Embodiment 1. The first building component 2 is a column and / or a main beam, and the second building component 3 is a main beam and / or a secondary beam. That is, the energy-dissipating connection node 1 in the steel structure building can connect columns and main beams, columns and secondary beams, main beams and main beams, and main beams and secondary beams according to different needs. For example, Figure 2 It is the connection between columns and beams. Figure 4 It connects the main beam and the secondary beam. Of course, energy-dissipating connection nodes 1 can also be set on different sides of the same column to meet the requirement of connecting multiple beams with one column.

[0055] It should also be noted that the connection between the first load-bearing plate 112 and the energy-consuming steel plate 111 and the first building component 2 and the second building component 3, such as... Figure 3 It can be connected by high-strength bolts using connecting end 4, or it can be directly welded; in construction scenarios where open flames cannot be used, bolting can be used. Connecting end 4 is welded to the corresponding building component.

[0056] When "stacked beams" exist in a modular steel structure, the number of beam members increases exponentially. The increased number of beams gives the modular structure significant potential for improving seismic performance in the nonlinear phase. Furthermore, using the energy-dissipating connection node 1 described in this application at the beam ends of the stacked beams enables the stacked beam members of the modular steel structure to fully dissipate energy, effectively improving the modular steel structure's resistance to major and super-major earthquakes.

[0057] In the description of this invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0058] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0059] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that they are in indirect contact through an intermediate medium. Furthermore, "above," "over," or "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," or "beneath" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0060] In the description of this specification, the terms "one embodiment," "some embodiments," "embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0061] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A modular steel structure beam-end multi-stage energy-dissipating connection node, characterized in that, It includes a first energy-dissipating structure (11) and a second energy-dissipating structure (12) arranged symmetrically, and a shear force transmission structure (13) disposed between the first energy-dissipating structure (11) and the second energy-dissipating structure (12). The first energy-consuming structure (11) and the second energy-consuming structure (12) are arranged horizontally, with one end of each connected to the first building component (2) and the other end connected to the second building component (3). The first end of the shear force transmission structure (13) is connected to the first building component (2), and the second end is connected to the second building component (3). Both the first energy-dissipating structure (11) and the second energy-dissipating structure (12) can gradually buckle and yield when the energy-dissipating connection node (1) is subjected to force; The shear force transmission structure (13) is able to transmit shear force between the first building component (2) and the second building component (3) when subjected to force; Both the first and second energy-consuming structures include multiple energy-consuming steel plates (111) arranged horizontally at intervals. The energy-consuming steel plates (111) are horizontal structures. One end of the energy-consuming steel plate (111) is used to connect to the first building component (2), and the other end is used to connect to the second building component (3). The energy-consuming steel plate (111) has a preset slenderness ratio; The first energy-dissipating structure (11) also includes a first load-bearing plate (112); The first load-bearing plate (112) is arranged parallel to the energy-consuming steel plate (111) between the energy-consuming steel plate (111) and the shear force transmission structure (13); The first load-bearing plate (112) is spaced apart from the energy-consuming steel plate (111) and the shear force transmission structure (13); The stiffness of the first load-bearing plate (112) is greater than that of the energy-consuming steel plate (111).

2. The modular steel structure beam-end multi-stage energy-dissipating connection node as described in claim 1, characterized in that, The shear force transmission structure (13) includes a first connector (131) and a second connector (132); One end of the first connector (131) is used to connect to the first building component (2), and one end of the second connector (132) is used to connect to the second building component (3). The first connector (131) and the second connector (132) are hinged to each other so that the second connector (132) can rotate about the first connector (131) in the vertical plane where the second building component (3) is located.

3. The modular steel structure beam-end multi-stage energy-dissipating connection node as described in claim 2, characterized in that, The shear force transmission structure (13) also includes a horizontal pin (133). The first connector (131) includes two opposing first ear plates, which are parallel to the vertical plane in which the second building component (3) is located; The second connector (132) is a second ear plate arranged parallel to the first ear plate; The second ear plate is located between the two first ear plates, and the second ear plate and the two first ear plates are connected by the horizontal pin (133).

4. The modular steel structure beam-end multi-stage energy-dissipating connection node as described in claim 1, characterized in that, It also includes a symmetrically arranged third and fourth energy-consuming structures; The third energy-dissipating structure and the fourth energy-dissipating structure are arranged perpendicular to the horizontal direction on both sides of the shear force transmission structure (13); Both the third and fourth energy-dissipating structures can gradually buckle and yield when the energy-dissipating connection node (1) is subjected to force.

5. A steel structure building, characterized in that, Includes the modular steel structure beam-end multi-stage energy-dissipating connection node (1), the first building component (2), and the second building component (3) as described in any one of claims 1-4; The first building component (2) is a column and / or a main beam, and the second building component (3) is a main beam and / or a secondary beam.

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