Modularized steel structure beam end multi-stage energy consumption connecting joint and steel structure building

Abstract

The invention relates to a modular steel structure beam end multi-stage energy consumption connecting joint and a steel structure building thereof, and the connecting joint comprises a first energy consumption structure and a second energy consumption structure which are symmetrically arranged, and a shearing force transmission structure arranged between the first energy consumption structure and the second energy consumption structure; one ends of the first energy dissipation structure and the second energy dissipation structure are connected with the first building component, and the other ends of the first energy dissipation structure and the second energy dissipation structure are connected with the second building component; the first end of the shearing force transmission structure is connected with the first building component and the second end is connected with the second building component; the first energy dissipation structure and the second energy dissipation structure can gradually generate buckling and yielding deformation when the connecting joint is stressed; the shearing force transmission structure can transmit shearing force between the first building component and the second building component when being stressed. The method has the beneficial effects that the rigidity and the bearing capacity of the energy consumption node are independently adjusted while the initial rigidity of the node is equivalent to the initial rigidity of an existing node.

Description

Technical Field

[0001] The present invention relates to the technical field of modular steel structure building structures, and in particular to a modular steel structure beam end multi-stage energy dissipation connection node and a steel structure building. Background Art

[0002] The connection node is a very critical part of the building structure, which is responsible for firmly connecting the beams and columns together to ensure the overall stability and safety of the building.

[0003] At present, in order to improve the performance of structural beams, the solution of setting energy-absorbing nodes at the ends of beams is often adopted. However, the energy-absorbing connection nodes used in existing traditional prefabricated steel structures are mainly designed around the seismic concepts of strong columns and weak beams, strong shear and weak bending, and strong nodes and weak components. The existing energy-absorbing connection nodes have the following problems: while paying attention to improving the energy-absorbing target, the stiffness of the node will also increase accordingly. Under the action of 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 bearing capacity and stiffness of the energy-absorbing connection nodes. Summary of the invention

[0004] 1. Technical issues to be resolved

[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-order energy-absorbing connection node and a steel structure building, which solves the technical problem that the modular steel structure beam end multi-order energy-absorbing connection node is difficult to independently regulate its bearing capacity and stiffness.

[0006] (II) Technical solution

[0007] In order to achieve the above object, the main technical solutions adopted by the present invention include:

[0008] In a first aspect, an embodiment of the present invention provides a modular steel structure beam end multi-stage energy dissipation connection node, comprising a first energy dissipation structure and a second energy dissipation structure symmetrically arranged, and a shear force transfer structure arranged between the first energy dissipation structure and the second energy dissipation structure;

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

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

[0011] The first energy dissipation structure and the second energy dissipation structure can both gradually buckle and yield when the connection node is subjected to force;

[0012] The shear force transfer structure is capable of transferring 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 dissipation connection node, the first energy dissipation structure and the second energy dissipation structure are of the same structure;

[0014] The first energy dissipation structure comprises a plurality of energy dissipation steel plates horizontally spaced apart, one end of the energy dissipation steel plate being used for connecting to the first building component, and the other end of the energy dissipation steel plate being used for connecting to the second building component.

[0015] Optionally, the modular steel structure beam end has a multi-stage energy-absorbing connection node, and the energy-absorbing steel plate has 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 bearing plate;

[0017] The first load-bearing plate is arranged parallel to the energy-absorbing steel plate and between the energy-absorbing steel plate and the shear force transfer structure.

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

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

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

[0021] The first connecting member and the second connecting member are hinged to each other so that the second connecting member can rotate around the first connecting member in a 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 transfer structure further includes a horizontal pin;

[0023] The first connecting member comprises two first ear plates arranged opposite to each other, wherein the first ear plates are parallel to the vertical plane where the second building component is located;

[0024] The second connecting member is a second ear plate arranged 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 via the horizontal pin shaft.

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

[0027] The third energy dissipation structure and the fourth energy dissipation structure are arranged perpendicular to the horizontal direction on both sides of the shear force transmission structure;

[0028] The third energy dissipation structure and the fourth energy dissipation structure can both gradually undergo buckling and yielding deformation when the connection node is subjected to force.

[0029] In a second aspect, an embodiment of the present invention provides a steel structure building, comprising the connection node described in the first aspect, a first building component and a second building component

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

[0031] (III) Beneficial effects

[0032] The beneficial effects of the present invention are as follows: a modular steel structure beam end multi-stage energy-absorbing connection node and steel structure building of the present invention, since energy-absorbing structures are arranged above and below the shear force transfer structure, when the node is subjected to force, both energy-absorbing structures can gradually buckle and yield, and can experience the failure of the internal components of the energy-absorbing structure in sequence when the earthquake action gradually increases, that is, it plays the role of multi-stage energy absorption, effectively decomposes the earthquake force, and improves the energy absorption capacity of the node; in addition, the shear force transfer structure can transmit shear force between two building components when subjected to force. Compared with the prior art, the energy-absorbing connection node realizes the independent adjustment of the stiffness and bearing capacity of the energy-absorbing node while ensuring the initial stiffness equivalent to that of the existing node, further effectively improving the overall mechanical properties of the steel structure building. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a three-dimensional schematic diagram of a modular steel structure beam end multi-stage energy dissipation connection node of Example 1 of a modular steel structure beam end multi-stage energy dissipation connection node and a steel structure building of the present invention;

[0034] Figure 2 It is a three-dimensional schematic diagram of a steel structure building of Example 2 of a modular steel structure beam end multi-stage energy dissipation connection node and a steel structure building of the present invention;

[0035] Figure 3 for Figure 2 Exploded diagram of a steel structure building;

[0036] Figure 4 It is another three-dimensional schematic diagram of the steel structure building according to the second embodiment of the present invention.

[0037] [Description of Reference Numerals]

[0038] 1: energy-absorbing connection node; 11: first energy-absorbing structure; 111: energy-absorbing steel plate; 112: first load-bearing plate; 12: second energy-absorbing structure; 13: shear force transmission structure; 131: first connecting piece; 132: second connecting piece; 133: horizontal pin; 2: first building component; 3: second building component; 4: connection end. DETAILED DESCRIPTION

[0039] The embodiments of the present invention propose a modular steel structure beam end multi-order energy-absorbing connection node and a steel structure building, which address the technical problem that the modular steel structure beam end multi-order energy-absorbing connection node is difficult to independently adjust its bearing capacity and stiffness; energy-absorbing structures are arranged above and below the shear force transmission structure, and when the node is subjected to force, the two energy-absorbing structures can gradually undergo buckling and yield deformation, and when the seismic action gradually increases, the internal components of the energy-absorbing structure can fail in sequence due to the force, that is, the multi-order energy absorption effect is exerted, and the seismic force is effectively decomposed. Compared with the prior art, it realizes independent adjustment of the stiffness and bearing capacity of the energy-absorbing node while ensuring the initial stiffness equivalent to that of the existing node, and further effectively improves the overall mechanical properties of the steel structure building.

[0040] In order to better understand the above technical solution, 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 accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a clearer and more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0041] Embodiment 1:

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

[0043] Energy dissipation structures are arranged above and below the shear force transmission structure 13. When the node is subjected to force,

[0044] Both energy-absorbing structures can gradually undergo buckling and yielding deformations, and can play the role of multi-order energy absorption when the earthquake action gradually increases, effectively decomposing the earthquake force. While ensuring the initial stiffness equivalent to that of the existing nodes, it realizes the independent adjustment of the stiffness and bearing capacity of the energy-absorbing nodes, further effectively improving the overall mechanical properties of the steel structure building.

[0045] Reference Figure 1 and Figure 2 , this embodiment provides a modular steel structure beam end multi-stage energy-absorbing connection node, the first energy-absorbing structure 11 and the second energy-absorbing structure 12 have the same structure and are symmetrically arranged relative to the shear force transfer structure 13, which can ensure that the mechanical properties on both sides of the shear force transfer structure 13 are consistent. When encountering situations such as earthquakes, that is, the energy absorption capacity of both sides is consistent, which is conducive to maintaining the stability of the overall structure of the node. This embodiment is described based on the first energy-absorbing structure 11, and the second energy-absorbing structure 12 refers to the first energy-absorbing structure 11. The first energy-absorbing structure 11 includes a plurality of energy-absorbing steel plates 111 arranged at horizontal intervals, one end of the energy-absorbing 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-absorbing steel plate 111 has a preset slenderness ratio according to the mechanical performance design requirements. Taking the energy-absorbing steel plate 111 as an example, the slenderness ratio refers to the ratio of the length of the energy-absorbing steel plate 111 to the end surface area. For example, referring to Figure 1, the slenderness ratio of the energy-absorbing steel plate 111 in the middle is smaller than the slenderness ratio of the energy-absorbing steel plates 111 on both sides; or, the energy-absorbing steel plates 111 with large slenderness ratio and small slenderness ratio are arranged at intervals, and the specific setting is made according to the needs, and no specific limitation is made here. The energy-absorbing steel plates 111 with different slenderness ratios are arranged at intervals to establish an energy-absorbing echelon. In the event of an earthquake, the energy-absorbing steel plates 111 with a small slenderness ratio will bend and yield one step later than the energy-absorbing steel plates 111 with a large slenderness ratio, thereby realizing step-by-step energy consumption of the earthquake. The specific method for calculating the slenderness ratio of the energy-absorbing steel plates 111 can refer to the prior art and will not be described in detail here.

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

[0047] The working principle of the first load-bearing plate 112 and the energy-absorbing steel plate 111 is as follows: by controlling the buckling instability behavior of a part of the energy-absorbing steel plates 111, the initial stiffness of the node is guaranteed, and at the same time, the node bearing capacity is adjusted independently, and the node bearing capacity will not be increased along with the node stiffness, which effectively avoids the disadvantages brought by the increase in node stiffness. By combining energy-absorbing steel plates 111 with different slenderness ratios, the cross-sectional stiffness is initially provided by all energy-absorbing steel plates 111; among them, the energy-absorbing steel plates 111 with large slenderness ratio form a buckling energy-absorbing section to control the node buckling area and realize the controllable nonlinear bearing capacity peak; the energy-absorbing steel plates 111 with small slenderness ratio form a yielding energy-absorbing section to maintain the nonlinear bearing capacity of the node, and finally, the bearing capacity and stiffness of the node components are adjusted independently.

[0048] It should be noted that when the installation space of the connection node is limited, the first load-bearing plate can be omitted by increasing the stiffness of a portion of the energy-absorbing steel plate 111 .

[0049] Reference Figure 1 and Figure 2 This embodiment provides a modular steel structure beam end multi-stage energy-absorbing connection node. The first load-bearing plate 112 is spaced apart from the energy-absorbing steel plate 111 and the shear force transfer structure 13, providing space for the energy-absorbing deformation of the first load-bearing plate 112, thereby also ensuring the normal operation of the shear force transfer structure 13.

[0050] Reference Figure 1 and Figure 2 The energy dissipation connection node 1 provided in this embodiment, the shear force transmission structure 13 includes a first connection member 131 and a second connection member 132, the first connection member 131 and the second connection member 132 are hinged to each other through a shear pin, the non-hinged end of the first connection member 131 is used to connect the first building component 2, and the non-hinged end of the second connection member 132 is used to connect the second building component 3. Under stress, the second connection member 132 hingedly arranged at 131 can rotate around the first connection member 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 first ear plates arranged opposite to each other, and the first ear plates are parallel to the vertical plane where the second building component 3 is located. The second connecting member 132 is a second ear plate arranged parallel to the first ear plate, and the second ear plate is 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 displacement between the two.

[0052] Reference Figure 1 and Figure 2The connection node provided in this embodiment may also include a third energy-absorbing structure and a fourth energy-absorbing structure (not shown in the figure) arranged relatively to each other according to the cross-sectional stiffness requirements of the connection node. The third energy-absorbing structure and the fourth energy-absorbing structure are arranged perpendicular to the horizontal direction on both sides of the shear force transmission structure 13, so that the first energy-absorbing structure 11, the second energy-absorbing structure 12, the third energy-absorbing structure and the fourth energy-absorbing structure enclose a sleeve-type space in space, and the two ports of the sleeve-type space correspond to the shear force transmission structure 13 for connecting the two ends of the building component. Of course, the above four energy-absorbing structures are arranged independently of each other. The third energy-absorbing structure and the fourth energy-absorbing structure can gradually buckle and yield when the energy-absorbing connection node 1 is subjected to force. The specific structures of the third energy-absorbing structure and the fourth energy-absorbing structure here can refer to the first energy-absorbing structure 11 and the second energy-absorbing structure 12, and will not be repeated here. It should be noted that the arrangement of the third energy-absorbing structure and the fourth energy-absorbing structure can further improve the cross-sectional stiffness of the node, which is suitable for situations where the cross-sectional stiffness of the node is required to be larger.

[0053] Embodiment 2:

[0054] Reference Figure 2 , Figure 3 and Figure 4 This embodiment provides a steel structure building, including the energy dissipation connection node 1 in embodiment 1, the first building component 2 and the second building component 3, 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 dissipation connection node 1 can connect a column and a main beam, a column and a secondary beam, a main beam and a main beam, and a main beam and a secondary beam in a steel structure building according to different requirements, for example, Figure 2 It is the connection between columns and beams. Figure 4 It is the connection between 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 first load-bearing plate 112 and the energy-absorbing steel plate 111 are connected to the first building component 2 and the second building component 3. Figure 3 The connection end 4 can be screwed with high-strength bolts or directly welded; in construction scenarios where open flames cannot be used, screw connection can be used. The connection end 4 is welded to the corresponding building component.

[0056] When there is a "stacked beam" situation in a modular steel structure, the number of beam components increases exponentially. More beam structures make the modular structure have great potential in improving the seismic performance in the nonlinear stage. In addition, using the energy-dissipating connection node 1 in this application at the beam end of the stacked beam can make the stacked beam components of the modular steel structure fully dissipate energy and effectively improve the modular steel structure's resistance to large and super large earthquakes.

[0057] In the description of the present invention, it should be understood that 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0058] 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. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0059] In the present invention, unless otherwise clearly specified and limited, when a first feature is “on” or “below” a second feature, it may be that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, when a first feature is “above”, “above” or “above” a second feature, it may be that the first feature is directly above or obliquely above the second feature, or it may simply mean that the first feature is higher in level than the second feature. When a first feature is “below”, “below” or “below” a second feature, it may be that the first feature is directly below or obliquely below the second feature, or it may simply mean that the first feature is lower in level than the second feature.

[0060] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "embodiment", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0061] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may alter, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A modular steel structure beam end multi-stage energy dissipation connection node, characterized in that: It comprises a first energy dissipation structure (11) and a second energy dissipation structure (12) which are symmetrically arranged, and a shear force transmission structure (13) which is arranged between the first energy dissipation structure (11) and the second energy dissipation structure (12); The first energy dissipation structure (11) and the second energy dissipation structure (12) are arranged horizontally, and one end of each of the two is connected to the first building component (2) and the other end is connected to the 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); The first energy dissipation structure (11) and the second energy dissipation structure (12) are both capable of gradually buckling and yielding when the energy dissipation connection node (1) is subjected to force; The shear force transfer structure (13) is capable of transferring shear force between the first building component (2) and the second building component (3) when subjected to force.

2. The modular steel structure beam end multi-stage energy dissipation connection node according to claim 1, characterized in that: The first energy dissipation structure (11) and the second energy dissipation structure (12) have the same structure; The first energy dissipation structure (11) comprises a plurality of energy dissipation steel plates (111) arranged horizontally at intervals, one end of the energy dissipation steel plate (111) being used to connect to the first building component (2), and the other end of the energy dissipation steel plate (111) being used to connect to the second building component (3).

3. The modular steel structure beam end multi-stage energy dissipation connection node according to claim 2, characterized in that: The energy dissipation steel plate (111) has a preset slenderness ratio.

4. The modular steel structure beam end multi-stage energy dissipation connection node according to claim 2, characterized in that: The first energy dissipation structure (11) further comprises a first load-bearing plate (112); The first load-bearing plate (112) is arranged parallel to the energy-absorbing steel plate (111) and between the energy-absorbing steel plate (111) and the shear force transfer structure (13).

5. The modular steel structure beam end multi-stage energy dissipation connection node according to claim 4, characterized in that: The first load-bearing plate (112) is spaced apart from the energy-absorbing steel plate (111) and the shear force transfer structure (13).

6. The modular steel structure beam end multi-stage energy dissipation connection node according to claim 1, characterized in that: The shear force transfer structure (13) comprises a first connecting member (131) and a second connecting member (132); One end of the first connecting member (131) is used to connect the first building component (2), and one end of the second connecting member (132) is used to connect the second building component (3); The first connecting member (131) and the second connecting member (132) are hinged to each other so that the second connecting member (132) can rotate around the first connecting member (131) in a vertical plane where the second building component (3) is located.

7. The modular steel structure beam end multi-stage energy dissipation connection node according to claim 6, characterized in that: The shear force transmission structure (13) further comprises a horizontal pin shaft (133); The first connecting member (131) comprises two first ear plates arranged opposite to each other, wherein the first ear plates are parallel to the vertical plane where the second building component (3) is located; The second connecting member (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 via the horizontal pin shaft (133).

8. The modular steel structure beam end multi-stage energy dissipation connection node according to claim 1, characterized in that: It also includes a third energy dissipation structure and a fourth energy dissipation structure that are symmetrically arranged; The third energy dissipation structure and the fourth energy dissipation structure are arranged perpendicularly to the horizontal direction on both sides of the shear force transmission structure (13); The third energy dissipation structure and the fourth energy dissipation structure can both gradually undergo buckling and yielding deformation when the energy dissipation connection node (1) is subjected to force.

9. A steel structure building, characterized in that: It comprises the modular steel structure beam end multi-stage energy dissipation connection node (1) as claimed in any one of claims 1 to 8, a first building component (2) and a second building component (3); The first building element (2) is a column and / or a main beam, and the second building element (3) is a main beam and / or a secondary beam.

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